Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168446
P. I Putu Deny Arthawan Sugih, Eko Nugroho, Rudy Hartanto
Green IT is a concept about wisely, efficiently, and environmentally technology (IT) usage or adoption that exists due to the negative impacts of technology (IT) growth. There are some examples about Green IT applications that are used by the organization (firm) as the support tools of its business processes such as Paperless Office (PLO), E-Meeting, Remote System, and Cloud Computing. Although Green IT applications are used as the support tools of organizational business processes but their strategic benefits are still unknown. Therefore, the research on this paper aims to analyze Green IT applications usage for the firm's competitive advantage strategy. This paper takes the case at PT. XYZ, an Indonesian telecommunication firm. The questionnaire was used as the research instrument on this paper for collecting the research data at the firm's IT Division and the data was analyzed by SmartPLS. The research result on this paper shows Green IT applications usage positively affects the firm's competitive advantage and it is positively affected by perceived usefulness, subjective norm, and organizational culture. The result is also supported by the related themes of the firm's annual reports for the recent years and the various respondents' related positive opinions. Only perceived risk is not proven that it negatively affects Green IT applications usage at the firm. This paper may be used as a reference for the firm's stakeholders to view Green IT applications usage as the firm's important asset for developing the firm's competitive advantage strategy.
{"title":"Analysis on green IT applications usage for the firm's competitive advantage strategy","authors":"P. I Putu Deny Arthawan Sugih, Eko Nugroho, Rudy Hartanto","doi":"10.1109/QIR.2017.8168446","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168446","url":null,"abstract":"Green IT is a concept about wisely, efficiently, and environmentally technology (IT) usage or adoption that exists due to the negative impacts of technology (IT) growth. There are some examples about Green IT applications that are used by the organization (firm) as the support tools of its business processes such as Paperless Office (PLO), E-Meeting, Remote System, and Cloud Computing. Although Green IT applications are used as the support tools of organizational business processes but their strategic benefits are still unknown. Therefore, the research on this paper aims to analyze Green IT applications usage for the firm's competitive advantage strategy. This paper takes the case at PT. XYZ, an Indonesian telecommunication firm. The questionnaire was used as the research instrument on this paper for collecting the research data at the firm's IT Division and the data was analyzed by SmartPLS. The research result on this paper shows Green IT applications usage positively affects the firm's competitive advantage and it is positively affected by perceived usefulness, subjective norm, and organizational culture. The result is also supported by the related themes of the firm's annual reports for the recent years and the various respondents' related positive opinions. Only perceived risk is not proven that it negatively affects Green IT applications usage at the firm. This paper may be used as a reference for the firm's stakeholders to view Green IT applications usage as the firm's important asset for developing the firm's competitive advantage strategy.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116483612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168475
Brahmastro Kresnaraman, Yasutomo Kawanishi, Daisuke Deguchi, Tomokazu Takahashi, Y. Mekada, I. Ide, H. Murase
Surveillance systems play a critical role in security and surveillance. A surveillance system with cameras that work in the visible spectrum is sufficient for most cases. However, problems may arise during the night, or in areas with less than ideal illumination conditions. Cameras with thermal infrared technology can be a better option in these situations since they do not rely on illumination to observe the environment. Furthermore, in our daily lives, it is common for humans to wear headgears such as glasses, masks, and hats. In surveillance, such headgears can be a hindrance to the identification of a person, and hence pose a certain degree of risk. This is not ideal in areas where the identity of a person is important, for example, in a bank. Therefore, in this paper we propose a headgear recognition method using an innovative decomposition approach on thermal infrared images. The decomposition method is based on Robust Principal Component Analysis, a modification of the popular Principal Component Analysis. The proposed method performs decomposition on a human image and isolates headgears in the image for recognition purposes. Experiments were conducted to evaluate the capability of the proposed method. The results show a positive outcome when compared with other methods.
{"title":"Headgear recognition by decomposing human images in the thermal infrared spectrum","authors":"Brahmastro Kresnaraman, Yasutomo Kawanishi, Daisuke Deguchi, Tomokazu Takahashi, Y. Mekada, I. Ide, H. Murase","doi":"10.1109/QIR.2017.8168475","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168475","url":null,"abstract":"Surveillance systems play a critical role in security and surveillance. A surveillance system with cameras that work in the visible spectrum is sufficient for most cases. However, problems may arise during the night, or in areas with less than ideal illumination conditions. Cameras with thermal infrared technology can be a better option in these situations since they do not rely on illumination to observe the environment. Furthermore, in our daily lives, it is common for humans to wear headgears such as glasses, masks, and hats. In surveillance, such headgears can be a hindrance to the identification of a person, and hence pose a certain degree of risk. This is not ideal in areas where the identity of a person is important, for example, in a bank. Therefore, in this paper we propose a headgear recognition method using an innovative decomposition approach on thermal infrared images. The decomposition method is based on Robust Principal Component Analysis, a modification of the popular Principal Component Analysis. The proposed method performs decomposition on a human image and isolates headgears in the image for recognition purposes. Experiments were conducted to evaluate the capability of the proposed method. The results show a positive outcome when compared with other methods.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120958375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168460
K. Priandana, B. Kusumoputro, E. Rahardjo
This paper discusses about the design of a specific radar antenna at ISM frequency band. The overall radar system will be utilized as a trajectory generator for a developed autonomous chaser boat prototype in which the radar antenna was designed to meet this requirement. Fresnel Zone free-space calculation revealed that the radar antenna should be placed at the lake side with a minimum height of 2.5 m. By considering the possible size and distance of the tracked boat, the required radar antenna vertical beamwidth for sufficient elevation coverage is at least 26°. Further design process in relation to desired azimuth tracking resolution revealed that the required horizontal beamwidth is less than 15°. A 4×8 microstrip array antenna was designed by simulations to meet these requirements. The simulation results revealed that the 3dB horizontal beamwidth was 12.2° and the 3dB vertical beamwidth was 160°. Two 4×8 microstrip array antennas were fabricated by utilizing the simulated design, one as transmitting antenna and the other as receiving antenna. Then, the overall performances were justified by experimental antenna measurements. The simulation and measurement results showed that the designed radar antenna can operate at ISM band with sufficient 3dB horizontal beamwidth of less than 15°.
{"title":"The design of ISM-band radar antenna for small boat's trajectory tracking","authors":"K. Priandana, B. Kusumoputro, E. Rahardjo","doi":"10.1109/QIR.2017.8168460","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168460","url":null,"abstract":"This paper discusses about the design of a specific radar antenna at ISM frequency band. The overall radar system will be utilized as a trajectory generator for a developed autonomous chaser boat prototype in which the radar antenna was designed to meet this requirement. Fresnel Zone free-space calculation revealed that the radar antenna should be placed at the lake side with a minimum height of 2.5 m. By considering the possible size and distance of the tracked boat, the required radar antenna vertical beamwidth for sufficient elevation coverage is at least 26°. Further design process in relation to desired azimuth tracking resolution revealed that the required horizontal beamwidth is less than 15°. A 4×8 microstrip array antenna was designed by simulations to meet these requirements. The simulation results revealed that the 3dB horizontal beamwidth was 12.2° and the 3dB vertical beamwidth was 160°. Two 4×8 microstrip array antennas were fabricated by utilizing the simulated design, one as transmitting antenna and the other as receiving antenna. Then, the overall performances were justified by experimental antenna measurements. The simulation and measurement results showed that the designed radar antenna can operate at ISM band with sufficient 3dB horizontal beamwidth of less than 15°.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129079718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168513
C. Apriono, Nofrizal, Mochamad Dandy Firmansyah, F. Zulkifli, E. Rahardjo
Radiation characteristics of an antenna should be tested through a precise measurement procedure. To provide an actual parameter of an antenna radiation, measurement must be performed in the far-field region and its distance is proportional to the antenna's dimension. Therefore, in a limited space of an anechoic chamber facility, antenna measurement has a constraint to a maximum dimension of the antenna under test. Near-field measurement method has been an alternative to overcome this problem. However, additional techniques, such as sampling, scanning mechanism, transformation computation, cannot be avoided to obtain the actual antenna radiation parameters. In this research, we study cylindrical scanning technique to obtain sampling data because it is simpler than the spherical scanning in mechanical setup and can produce radiation pattern results in completely two dimension polar diagrams. Our purpose is to provide low cost and reasonable performance of a near-field measurement system. Two dimension Fast-Fourier Transform is used to process and analyze the near-field data into the far-field data. Other methods, i.e. one dimensional Fast-Fourier transform and numerical method, are also performed to compare the accuracy and efficiency of the proposed method. Near-field data generated from experiment data measured of 8-array micro-strip antenna at resonant frequency 3.35 GHz. Transformation results show that average deviations of one dimension Fast-Fourier Transform, two dimension Fast-Fourier Transform and the numerical method are 6.83 dB, 3.04 dB, and 3.77 dB, respectively. These results show the minimum discrepancies between the transform and the expected far-field obtained by using the two dimensions Fast-Fourier Transform. This method has shown near-field measurement and transformation can predict the far-field radiation characteristics.
{"title":"Near-field to far-field transformation of cylindrical scanning antenna measurement using two dimension fast-fourier transform","authors":"C. Apriono, Nofrizal, Mochamad Dandy Firmansyah, F. Zulkifli, E. Rahardjo","doi":"10.1109/QIR.2017.8168513","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168513","url":null,"abstract":"Radiation characteristics of an antenna should be tested through a precise measurement procedure. To provide an actual parameter of an antenna radiation, measurement must be performed in the far-field region and its distance is proportional to the antenna's dimension. Therefore, in a limited space of an anechoic chamber facility, antenna measurement has a constraint to a maximum dimension of the antenna under test. Near-field measurement method has been an alternative to overcome this problem. However, additional techniques, such as sampling, scanning mechanism, transformation computation, cannot be avoided to obtain the actual antenna radiation parameters. In this research, we study cylindrical scanning technique to obtain sampling data because it is simpler than the spherical scanning in mechanical setup and can produce radiation pattern results in completely two dimension polar diagrams. Our purpose is to provide low cost and reasonable performance of a near-field measurement system. Two dimension Fast-Fourier Transform is used to process and analyze the near-field data into the far-field data. Other methods, i.e. one dimensional Fast-Fourier transform and numerical method, are also performed to compare the accuracy and efficiency of the proposed method. Near-field data generated from experiment data measured of 8-array micro-strip antenna at resonant frequency 3.35 GHz. Transformation results show that average deviations of one dimension Fast-Fourier Transform, two dimension Fast-Fourier Transform and the numerical method are 6.83 dB, 3.04 dB, and 3.77 dB, respectively. These results show the minimum discrepancies between the transform and the expected far-field obtained by using the two dimensions Fast-Fourier Transform. This method has shown near-field measurement and transformation can predict the far-field radiation characteristics.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131883247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168533
M. Susanto, Dika Fauzia, Melvi, Syaiful Alam
Deployment of femtocell in macrocell cellular network which forms two-tier femtocell-macrocell cellular network faces more complicated interference problems, since it uses the same licensed frequency spectrum as its macrocell. This paper addresses the interference problems for downlink transmission in such two-tier cellular communication network. In this paper, interference management using power control is proposed in that two-tier network. This paper considers multi-cell cellular network composing of three macrocell systems. Ten femtocells are deployed in each macrocell system. This paper takes worst case for the scenario that is all femtocells and macrocells in downlink transmissions. Simulation for the system without power control was carried out first as a baseline system. Then, two methods of power control called as PC-1 and PC-2 in this paper were explored to reduce the interference effects. The use of two power controls is to take a trade-off, the increasing of quality of service (QoS) in macrocell system while is not degrading much QoS in femtocell system. Both power control methods are based on the estimated Signal to Interference Plus Noise Ratio (SINR). Both of power control methods also ensure that the results of controlled transmitting power will not exceed the maximum or the minimum of allowable transmitting powers. Simulations have been carried out and performance parameter in term of Cumulative Distribution Function (CDF) of SINR have been collected for co-tier (femtocell-femtocell and macrocell-macrocell), cross-tier (femtocell-macrocell and macrocell-femtocell), and the total interferences. The simulation results show that both power control methods outperform the baseline system.
{"title":"Downlink power control for interference management in femtocell-macrocell cellular communication network","authors":"M. Susanto, Dika Fauzia, Melvi, Syaiful Alam","doi":"10.1109/QIR.2017.8168533","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168533","url":null,"abstract":"Deployment of femtocell in macrocell cellular network which forms two-tier femtocell-macrocell cellular network faces more complicated interference problems, since it uses the same licensed frequency spectrum as its macrocell. This paper addresses the interference problems for downlink transmission in such two-tier cellular communication network. In this paper, interference management using power control is proposed in that two-tier network. This paper considers multi-cell cellular network composing of three macrocell systems. Ten femtocells are deployed in each macrocell system. This paper takes worst case for the scenario that is all femtocells and macrocells in downlink transmissions. Simulation for the system without power control was carried out first as a baseline system. Then, two methods of power control called as PC-1 and PC-2 in this paper were explored to reduce the interference effects. The use of two power controls is to take a trade-off, the increasing of quality of service (QoS) in macrocell system while is not degrading much QoS in femtocell system. Both power control methods are based on the estimated Signal to Interference Plus Noise Ratio (SINR). Both of power control methods also ensure that the results of controlled transmitting power will not exceed the maximum or the minimum of allowable transmitting powers. Simulations have been carried out and performance parameter in term of Cumulative Distribution Function (CDF) of SINR have been collected for co-tier (femtocell-femtocell and macrocell-macrocell), cross-tier (femtocell-macrocell and macrocell-femtocell), and the total interferences. The simulation results show that both power control methods outperform the baseline system.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131760023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168522
Wahidin Wahab
The solar (PV) energy as one of the renewable natural energy has been widely used as an environment friendly resources, however the intensity of incoming sun-light as the source of the power, is not always the same all the time during the day, which makes the output voltage becomes unstable. The sun light intensity can be influenced by various factors such as the cloudy or sunny weather, which causes large changes in the generated voltage of the solar panels. To compensate for the variation of generated voltage when the light intensity is low, it should be boosted, and when the light intensity is high, it should be bucked and controlled to reach the required output voltage. And furthermore, the output voltage should be maintained to a desired DC voltage to be applicable for electrical households. A Fuzzy Logic controller is designed to control the duty cycle of a PWM signal generated to control the switching period to regulate the output voltage of the system. This paper discusses the design and control of a buck-boost converter for solar panels of the power range 50–100W, which can be used in household apparatus. The system has been analyzed, and validated by simulation study and the results show that the target voltage can be regulated very well.
{"title":"Design and simulation of an output voltage controller for solar power (pv) application using fuzzy logic controller","authors":"Wahidin Wahab","doi":"10.1109/QIR.2017.8168522","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168522","url":null,"abstract":"The solar (PV) energy as one of the renewable natural energy has been widely used as an environment friendly resources, however the intensity of incoming sun-light as the source of the power, is not always the same all the time during the day, which makes the output voltage becomes unstable. The sun light intensity can be influenced by various factors such as the cloudy or sunny weather, which causes large changes in the generated voltage of the solar panels. To compensate for the variation of generated voltage when the light intensity is low, it should be boosted, and when the light intensity is high, it should be bucked and controlled to reach the required output voltage. And furthermore, the output voltage should be maintained to a desired DC voltage to be applicable for electrical households. A Fuzzy Logic controller is designed to control the duty cycle of a PWM signal generated to control the switching period to regulate the output voltage of the system. This paper discusses the design and control of a buck-boost converter for solar panels of the power range 50–100W, which can be used in household apparatus. The system has been analyzed, and validated by simulation study and the results show that the target voltage can be regulated very well.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116503608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168468
N. Nursam, J. Hidayat, L. M. Pranoto, S. Wijayanti
Despite the rapid development of dye-sensitized solar cell since its early breakthrough by Graetzel in 1991, further development on the design and fabrication technique still constitutes a major challenge for this type of solar cell to reach the mass production and marketing level. Generally, the upscaling of dye-sensitized solar cell for daily utilizations necessitates the interconnection of multiple cells to form modules. In this regard, the use of screen-printing method could provide a major benefit to fabricate such structure as it is feasible for industrial and large scale manufacturing process. This contribution describes the fabrication of a 100 × 100 mm2 dyesensitized solar module using semi-automatic screen-printing technique. The fabricated modules comprised of 7 individual cells made from titanium dioxide (TiO2) nanocrystalline films, each with an active area size of 10 × 70 mm2, giving an active area ratio of 70%. The cells were connected to the neighboring cells in a parallel configuration. To simulate the potential of the fabricated modules for indoor applications, the current-voltage characteristics of the module were measured under an ambient lighting with an intensity of 30 mW/cm2. The parallel interconnected dye-sensitized solar module produced an open circuit voltage (VOC) of 0.71 V with a short circuit current (ISC) of 21.73 mA and maximum power output (Pmax) of 4.19 mW. Overall, the fabricated module achieved a power conversion efficiency of 1.99%. A secondary measurement under simulated sun with an intensity of 50 mW/cm2 (0.5 Sun) was also carried out to compare the performance of the modules under different environment. Under the later condition, the VOC, ISC, Pmax, and efficiency obtained were 0.77 V, 27.64 mA, 5.47 mW, and 0.15%, respectively. Our results indicated that the dye-sensitized solar module with integrated parallel connection has a prominent advantage to be applied as an energy source for applications that requires high current input under low-light condition.
{"title":"Electrical properties of dye-sensitized solar module with integrated parallel connections","authors":"N. Nursam, J. Hidayat, L. M. Pranoto, S. Wijayanti","doi":"10.1109/QIR.2017.8168468","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168468","url":null,"abstract":"Despite the rapid development of dye-sensitized solar cell since its early breakthrough by Graetzel in 1991, further development on the design and fabrication technique still constitutes a major challenge for this type of solar cell to reach the mass production and marketing level. Generally, the upscaling of dye-sensitized solar cell for daily utilizations necessitates the interconnection of multiple cells to form modules. In this regard, the use of screen-printing method could provide a major benefit to fabricate such structure as it is feasible for industrial and large scale manufacturing process. This contribution describes the fabrication of a 100 × 100 mm2 dyesensitized solar module using semi-automatic screen-printing technique. The fabricated modules comprised of 7 individual cells made from titanium dioxide (TiO2) nanocrystalline films, each with an active area size of 10 × 70 mm2, giving an active area ratio of 70%. The cells were connected to the neighboring cells in a parallel configuration. To simulate the potential of the fabricated modules for indoor applications, the current-voltage characteristics of the module were measured under an ambient lighting with an intensity of 30 mW/cm2. The parallel interconnected dye-sensitized solar module produced an open circuit voltage (VOC) of 0.71 V with a short circuit current (ISC) of 21.73 mA and maximum power output (Pmax) of 4.19 mW. Overall, the fabricated module achieved a power conversion efficiency of 1.99%. A secondary measurement under simulated sun with an intensity of 50 mW/cm2 (0.5 Sun) was also carried out to compare the performance of the modules under different environment. Under the later condition, the VOC, ISC, Pmax, and efficiency obtained were 0.77 V, 27.64 mA, 5.47 mW, and 0.15%, respectively. Our results indicated that the dye-sensitized solar module with integrated parallel connection has a prominent advantage to be applied as an energy source for applications that requires high current input under low-light condition.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133615794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168458
Antrisha Daneraichi Setiawan, A. Munir
This paper deals with the incorporation of a high permittivity circular dielectric resonator (CDR) into a microstrip antenna which is investigated through simulation and measurement. Due to the circular shape of CDR, the microstrip antenna applied for investigation takes a circular patch with planar microstrip lines as a feeding line. The used CDR has the relative permittivity of 50 with the radius of 6.75mm and the height of 6.7mm. While, the microstrip antenna is deployed on a flame retardant (FR) glass-reinforced epoxy dielectric substrate with the relative permittivity of 4.2 and the thickness of 1.6mm. The CDR is incorporated into the microstrip antenna by placing it concentrically on the circular patch of microstrip antenna. From the experimental measurement, it shows that the resonant frequency of microstrip antenna with high permittivity CDR is lower about 1GHz than of the microstrip antenna without CDR from the frequency of 5.94GHz to the frequency of 5.04GHz. Although there is some slight different in other antenna parameters, however, both microstrip antennas show similar tendency each other in their performances.
{"title":"Incorporation of high permittivity circular dielectric resonator for enhancing resonant frequency of microstrip antenna","authors":"Antrisha Daneraichi Setiawan, A. Munir","doi":"10.1109/QIR.2017.8168458","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168458","url":null,"abstract":"This paper deals with the incorporation of a high permittivity circular dielectric resonator (CDR) into a microstrip antenna which is investigated through simulation and measurement. Due to the circular shape of CDR, the microstrip antenna applied for investigation takes a circular patch with planar microstrip lines as a feeding line. The used CDR has the relative permittivity of 50 with the radius of 6.75mm and the height of 6.7mm. While, the microstrip antenna is deployed on a flame retardant (FR) glass-reinforced epoxy dielectric substrate with the relative permittivity of 4.2 and the thickness of 1.6mm. The CDR is incorporated into the microstrip antenna by placing it concentrically on the circular patch of microstrip antenna. From the experimental measurement, it shows that the resonant frequency of microstrip antenna with high permittivity CDR is lower about 1GHz than of the microstrip antenna without CDR from the frequency of 5.94GHz to the frequency of 5.04GHz. Although there is some slight different in other antenna parameters, however, both microstrip antennas show similar tendency each other in their performances.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125473179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168514
Teguh Wahyudi, C. Apriono, F. Zulkifli, E. Rahardjo
Terahertz (THz) wave frequency region is part of the electromagnetic spectrum. This spectrum is located between 0.3 THz to 10 THz or between radio waves and optics. The THz frequency region has potentials in many different applications, such as imaging, spectroscopy, and wireless communication. However, some problems are still remaining and should be solved to develop THz technology system for an actual use, such as expensive fabrication facilities, lack of recent device performances, and low speed measurement process. This research proposes a bow-tie antenna in the THz region to provide wideband bandwidth for THz broadband applications. This antenna uses high resistivity Silicon material a substrate and Gold metal layer in a specified pattern as a radiating element. The initial bow-tie antenna design is elaborated by combining a capacitive bar technique placed near the antenna feed gap to improve return loss and wide bandwidth. This research is conducted by using the calculation method to analyze the initial antenna model and simulation by using commercial simulator software of CST Microwave studio to perform design optimization. The initial antenna before combined with the capacitive bar has a resonant frequency of 1 THz with return loss (RL) at −11.758 dB, and bandwidth 114.6 GHz from VSWR equal 2. The results from the THz bow-tie antenna combined with the capacitive bar show resonant frequency at 1 THz with RL at −40 dB, and bandwidth 457.47 GHz from VSWR equal 2. The capacitive bar technique has been successfully improved more bandwidth and better resonant frequency at 1 THz.
{"title":"Broadband planar bow-tie antenna on high resistivity silicon substrate for terahertz application","authors":"Teguh Wahyudi, C. Apriono, F. Zulkifli, E. Rahardjo","doi":"10.1109/QIR.2017.8168514","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168514","url":null,"abstract":"Terahertz (THz) wave frequency region is part of the electromagnetic spectrum. This spectrum is located between 0.3 THz to 10 THz or between radio waves and optics. The THz frequency region has potentials in many different applications, such as imaging, spectroscopy, and wireless communication. However, some problems are still remaining and should be solved to develop THz technology system for an actual use, such as expensive fabrication facilities, lack of recent device performances, and low speed measurement process. This research proposes a bow-tie antenna in the THz region to provide wideband bandwidth for THz broadband applications. This antenna uses high resistivity Silicon material a substrate and Gold metal layer in a specified pattern as a radiating element. The initial bow-tie antenna design is elaborated by combining a capacitive bar technique placed near the antenna feed gap to improve return loss and wide bandwidth. This research is conducted by using the calculation method to analyze the initial antenna model and simulation by using commercial simulator software of CST Microwave studio to perform design optimization. The initial antenna before combined with the capacitive bar has a resonant frequency of 1 THz with return loss (RL) at −11.758 dB, and bandwidth 114.6 GHz from VSWR equal 2. The results from the THz bow-tie antenna combined with the capacitive bar show resonant frequency at 1 THz with RL at −40 dB, and bandwidth 457.47 GHz from VSWR equal 2. The capacitive bar technique has been successfully improved more bandwidth and better resonant frequency at 1 THz.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"288 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124210096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168459
S. Alam, I. Wibisana, I. Surjati
This paper proposed a new design of array microstrip antenna using slit technique to reduce dimension of the antenna for Wireless Fidelity Communication and to increase gain. Dimension of the enclosure of the proposed antenna is 269 mm × 87 mm. The proposed antenna using single layer FR4 substrate with relative permittivity (εr) of 4.3, substrate thickness (h) of 1.6 mm and loss tangent (tan δ) of 0.0265. The simulation results shown that the antenna is capable working at frequency 2448 MHz with VSWR of 1.104 and return loss of −26.14 dB. Bandwidth of the proposed microstrip antenna is 320 MHz (2253 MHz–2573 MHz). Furthermore, its dimension can be reduced up to 37.5% with its gain of the proposed antenna of 6.45 dB.
{"title":"Miniaturization of array microstrip antenna using peripheral slits for wireless fidelity communication","authors":"S. Alam, I. Wibisana, I. Surjati","doi":"10.1109/QIR.2017.8168459","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168459","url":null,"abstract":"This paper proposed a new design of array microstrip antenna using slit technique to reduce dimension of the antenna for Wireless Fidelity Communication and to increase gain. Dimension of the enclosure of the proposed antenna is 269 mm × 87 mm. The proposed antenna using single layer FR4 substrate with relative permittivity (εr) of 4.3, substrate thickness (h) of 1.6 mm and loss tangent (tan δ) of 0.0265. The simulation results shown that the antenna is capable working at frequency 2448 MHz with VSWR of 1.104 and return loss of −26.14 dB. Bandwidth of the proposed microstrip antenna is 320 MHz (2253 MHz–2573 MHz). Furthermore, its dimension can be reduced up to 37.5% with its gain of the proposed antenna of 6.45 dB.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130500449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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