Pub Date : 2017-07-27DOI: 10.1109/ICWT.2017.8284132
I. Zakia
Providing high data-rates to high-speed train (HST) in Ka-band is one of the interesting applications of high-altitutde platform (HAP). Theoretically in the high signal-to-noise ratio (SNR) regime, we can increase the channel capacity, hence the data-rate, proportional to the minimum number of antennas at the transmitter or receiver by implementing the multiple-input multiple-output (MIMO) systems. However, strong line-of-sight (LOS) exists in the HST wireless channel, which yields the MIMO channel matrix to be ill-conditioned and thus, the MIMO system fails to reach the multiplexing gain. Assuming uniform linear array (ULA) configurations at the transceiver, previous works have shown that in channels with strong LOS, capacity is maximized by obeying the antenna separation product (ASP) at the transceiver. Nevertheless, this product depends on the elevation angle between the incoming wave and the HST moving direction. Therefore, different train antenna separation distance values are required while the train is travelling in the HAP coverage area, which makes it unrealistic in practice. It is shown here that in Ka-band, the distance values change slowly for the elevation angles of interest. Assuming a 2×2 MIMO systems, an antenna separation distance of 83 cm at the train is a good compromise value which still achieve the same multiplexing gain.
{"title":"Capacity of HAP-MIMO channels for high-speed train communications","authors":"I. Zakia","doi":"10.1109/ICWT.2017.8284132","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284132","url":null,"abstract":"Providing high data-rates to high-speed train (HST) in Ka-band is one of the interesting applications of high-altitutde platform (HAP). Theoretically in the high signal-to-noise ratio (SNR) regime, we can increase the channel capacity, hence the data-rate, proportional to the minimum number of antennas at the transmitter or receiver by implementing the multiple-input multiple-output (MIMO) systems. However, strong line-of-sight (LOS) exists in the HST wireless channel, which yields the MIMO channel matrix to be ill-conditioned and thus, the MIMO system fails to reach the multiplexing gain. Assuming uniform linear array (ULA) configurations at the transceiver, previous works have shown that in channels with strong LOS, capacity is maximized by obeying the antenna separation product (ASP) at the transceiver. Nevertheless, this product depends on the elevation angle between the incoming wave and the HST moving direction. Therefore, different train antenna separation distance values are required while the train is travelling in the HAP coverage area, which makes it unrealistic in practice. It is shown here that in Ka-band, the distance values change slowly for the elevation angles of interest. Assuming a 2×2 MIMO systems, an antenna separation distance of 83 cm at the train is a good compromise value which still achieve the same multiplexing gain.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123604400","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 : 2017-07-27DOI: 10.1109/ICWT.2017.8284133
Nurul Fadilah
This paper presents the bandwidth enhancement of patch antenna using diagonal slot and corner truncations. The antenna is intended to have circular polarization and operate at L-band frequency. Initially, a conventional patch antenna resonates at the L-band frequency of 1.27GHz is designed. Then, by adding a diagonal slot and corner truncations, the antenna parameter, i.e. −10dB working bandwidth, is analyzed. The antenna which is deployed on an FR4 epoxy dielectric substrate is fed using proximity coupling technique through a microstrip line beneath the patch. From the result, it shows that the impedance bandwidth of antenna is widened up to 60MHz or 200% with the axial ratio bandwidth of 200MHz in the frequency range from 1.16GHz to 1.36GHz.
{"title":"Slot and corner truncation for enhancing bandwidth of circularly polarized patch antenna","authors":"Nurul Fadilah","doi":"10.1109/ICWT.2017.8284133","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284133","url":null,"abstract":"This paper presents the bandwidth enhancement of patch antenna using diagonal slot and corner truncations. The antenna is intended to have circular polarization and operate at L-band frequency. Initially, a conventional patch antenna resonates at the L-band frequency of 1.27GHz is designed. Then, by adding a diagonal slot and corner truncations, the antenna parameter, i.e. −10dB working bandwidth, is analyzed. The antenna which is deployed on an FR4 epoxy dielectric substrate is fed using proximity coupling technique through a microstrip line beneath the patch. From the result, it shows that the impedance bandwidth of antenna is widened up to 60MHz or 200% with the axial ratio bandwidth of 200MHz in the frequency range from 1.16GHz to 1.36GHz.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114481234","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 : 2017-07-27DOI: 10.1109/ICWT.2017.8284150
M. Yunus, F. Zulkifli, E. Rahardjo
This paper presents analytical approach of permittivity and permeability of planar structure which takes a shape of spiral-resonator (SR) implemented as an antenna radiator. The use of planar structure for instance as an antenna radiator is recently required in order to have communication devices with compact and light in weight. The approach is carried out by calculating the effective impedance of SR shaped planar structure through its equivalent circuit which consists of resistance, inductance, and capacitance. Afterwards, the effective permittivity and permeability are obtained. To verify the proposed analytical approach, the SR shaped planar structure is also characterized using 3D simulation software to gain the effective permittivity and permeability. It shows that the effective permittivity and permeability which are yielded from simulation and analytical approach have good agreement each other for positive permittivity (μ > 0) and negative permeability (μ < 0) at the frequency range above 0.8 GHz.
{"title":"Analytical approach of permittivity and permeability of spiral-resonator shaped planar structure implemented as antenna radiator","authors":"M. Yunus, F. Zulkifli, E. Rahardjo","doi":"10.1109/ICWT.2017.8284150","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284150","url":null,"abstract":"This paper presents analytical approach of permittivity and permeability of planar structure which takes a shape of spiral-resonator (SR) implemented as an antenna radiator. The use of planar structure for instance as an antenna radiator is recently required in order to have communication devices with compact and light in weight. The approach is carried out by calculating the effective impedance of SR shaped planar structure through its equivalent circuit which consists of resistance, inductance, and capacitance. Afterwards, the effective permittivity and permeability are obtained. To verify the proposed analytical approach, the SR shaped planar structure is also characterized using 3D simulation software to gain the effective permittivity and permeability. It shows that the effective permittivity and permeability which are yielded from simulation and analytical approach have good agreement each other for positive permittivity (μ > 0) and negative permeability (μ < 0) at the frequency range above 0.8 GHz.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116288216","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 : 2017-07-27DOI: 10.1109/ICWT.2017.8284138
Yudha Purwanto, Kuspriyanto, Hendrawan, B. Rahardjo
Distributed Denial of Service (DDoS) attack growing larger as growing advance of internet technology and scale. Traffic Anomaly-based Intrusion Detection/Prevention System (IDS/IPS) has proposed as its capability to detect DDoS attack. Unfortunately, the anomaly detection algorithm was limited to detect the existence of an attack. To determine the type of attack, the system must occupy multiclass classification algorithm. However, the complexity of distance-based classification algorithm is always higher than detection algorithm. This research view IPS as one integrated sequence of detection, classification, and prevention process. We propose a multi-stage IPS with the used of distance-based anomaly detection analysis in the first stage, and classification analysis in later stages. The simulation result shows lower processing time of the IPS, with a capability of choosing a certain action for certain type of DDoS attack.
{"title":"Multistage process to decrease processing time in intrusion prevention system","authors":"Yudha Purwanto, Kuspriyanto, Hendrawan, B. Rahardjo","doi":"10.1109/ICWT.2017.8284138","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284138","url":null,"abstract":"Distributed Denial of Service (DDoS) attack growing larger as growing advance of internet technology and scale. Traffic Anomaly-based Intrusion Detection/Prevention System (IDS/IPS) has proposed as its capability to detect DDoS attack. Unfortunately, the anomaly detection algorithm was limited to detect the existence of an attack. To determine the type of attack, the system must occupy multiclass classification algorithm. However, the complexity of distance-based classification algorithm is always higher than detection algorithm. This research view IPS as one integrated sequence of detection, classification, and prevention process. We propose a multi-stage IPS with the used of distance-based anomaly detection analysis in the first stage, and classification analysis in later stages. The simulation result shows lower processing time of the IPS, with a capability of choosing a certain action for certain type of DDoS attack.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124876698","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/ICWT.2017.8284145
M. Ulfah, Chairunnisa, A. Munir
This paper proposes a technique for bandwidth enhancement of substrate integrated waveguide (SIW) cavity-backed slot antenna. The enhancement of bandwidth is carried out by putting a square metallic plate in the middle of substrate. Since a thin layer of dielectric substrate increases quality factor (Q factor) of the antenna which affects of narrowing bandwidth response, hence the proposed antenna implements multiple layers of FR4 epoxy dielectric substrate in overcoming the problem. The SIW cavity-backed slot antenna is simply excited by a coaxial type of probe extended into square metallic plate which is located at center of the cavity. Some parametric studies are offered for better understanding of the proposed antenna characteristics such as number of slot, angle of tilted slot, separation between slots, and position of square metallic plate. It is found that the use of square metallic plate could produce the second resonant frequency affecting to the bandwidth enhancement. The characterization result shows that the −10dB working bandwidth is about 175MHz in the frequency range of 1.9GHz to 2.075GHz with the fractional bandwidth of 9.2%.
{"title":"Bandwidth enhancement of substrate integrated waveguide cavity-backed slot antenna","authors":"M. Ulfah, Chairunnisa, A. Munir","doi":"10.1109/ICWT.2017.8284145","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284145","url":null,"abstract":"This paper proposes a technique for bandwidth enhancement of substrate integrated waveguide (SIW) cavity-backed slot antenna. The enhancement of bandwidth is carried out by putting a square metallic plate in the middle of substrate. Since a thin layer of dielectric substrate increases quality factor (Q factor) of the antenna which affects of narrowing bandwidth response, hence the proposed antenna implements multiple layers of FR4 epoxy dielectric substrate in overcoming the problem. The SIW cavity-backed slot antenna is simply excited by a coaxial type of probe extended into square metallic plate which is located at center of the cavity. Some parametric studies are offered for better understanding of the proposed antenna characteristics such as number of slot, angle of tilted slot, separation between slots, and position of square metallic plate. It is found that the use of square metallic plate could produce the second resonant frequency affecting to the bandwidth enhancement. The characterization result shows that the −10dB working bandwidth is about 175MHz in the frequency range of 1.9GHz to 2.075GHz with the fractional bandwidth of 9.2%.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"4 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":"114612806","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/ICWT.2017.8284130
Richard, Iskandar
This paper discusses the impact of carrier aggregation in Long Term Evolution based cellular technology, especially the intra-band type. It is done by splitting carrier bandwidth into component carriers and putting them into different channel configurations. The simulation results showed that usage of carrier aggregation on the same bandwidth is able to increase the coverage of access network. However, carrier aggregation may impact network quality for slightly decreasing SINR and downlink throughput due to additional inter-channel interference.
{"title":"Coverage and quality assessment with intra-band carrier aggregation on LTE-advanced based wireless access network","authors":"Richard, Iskandar","doi":"10.1109/ICWT.2017.8284130","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284130","url":null,"abstract":"This paper discusses the impact of carrier aggregation in Long Term Evolution based cellular technology, especially the intra-band type. It is done by splitting carrier bandwidth into component carriers and putting them into different channel configurations. The simulation results showed that usage of carrier aggregation on the same bandwidth is able to increase the coverage of access network. However, carrier aggregation may impact network quality for slightly decreasing SINR and downlink throughput due to additional inter-channel interference.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"157 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":"132000044","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/ICWT.2017.8284134
N. F. A. Hakim, Chairunnisa, M. S. Arifianto, A. Munir
This paper discusses the accuracy of range detection for stepped-frequency continuous-wave (SFCW) portable through-wall radar (TWR) and its analysis through simulation software. The radar which is portably constructed of some modular devices has operating frequency range between 1600MHz and 2500MHz. Here, the use of simulation software aims to do modelling to investigate information contained in transmitted and received signals. The simulation of SFCW radar for range detection in the designated frequency was able to range some targets located at the distance of 2.6m and 5.2m. From the result, it shows that the SFCW method was suitable for designing the portable TWR which could range some targets at the distance more than 5m from the radar.
{"title":"Accuracy analysis of range detection for SFCW portable through-wall radar","authors":"N. F. A. Hakim, Chairunnisa, M. S. Arifianto, A. Munir","doi":"10.1109/ICWT.2017.8284134","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284134","url":null,"abstract":"This paper discusses the accuracy of range detection for stepped-frequency continuous-wave (SFCW) portable through-wall radar (TWR) and its analysis through simulation software. The radar which is portably constructed of some modular devices has operating frequency range between 1600MHz and 2500MHz. Here, the use of simulation software aims to do modelling to investigate information contained in transmitted and received signals. The simulation of SFCW radar for range detection in the designated frequency was able to range some targets located at the distance of 2.6m and 5.2m. From the result, it shows that the SFCW method was suitable for designing the portable TWR which could range some targets at the distance more than 5m from the radar.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"2 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":"134390436","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/ICWT.2017.8284163
Muhammad Rizky Hikmatullah, S. Haryadi
Mean Opinion Score (MOS) is one of the indicators used to determine the quality of telecommunications services. In this study measured the quality of the telephone conversation on the Over The Top services Call Service. The study was conducted using the Perceptual Evaluation of Speech Quality (PESQ) in accordance with ITU-T P.862. Based on ITU-T P.862, MOS values expressed in the form of assessment of the numbers 1.0 to 4.5.
平均意见得分(MOS)是用来确定电信服务质量的指标之一。在这项研究中，我们测量了Over the Top服务呼叫服务的通话质量。这项研究是根据ITU-T P.862使用语音质量感知评估(PESQ)进行的。根据ITU-T P.862, MOS值以评估数字1.0至4.5的形式表示。
{"title":"Perceptual evaluation of speech quality over the top call service","authors":"Muhammad Rizky Hikmatullah, S. Haryadi","doi":"10.1109/ICWT.2017.8284163","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284163","url":null,"abstract":"Mean Opinion Score (MOS) is one of the indicators used to determine the quality of telecommunications services. In this study measured the quality of the telephone conversation on the Over The Top services Call Service. The study was conducted using the Perceptual Evaluation of Speech Quality (PESQ) in accordance with ITU-T P.862. Based on ITU-T P.862, MOS values expressed in the form of assessment of the numbers 1.0 to 4.5.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"211 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":"114337103","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/ICWT.2017.8284152
Riana Mahilda, Istikmal, I. D. Irawati
Several traffic control algorithms on Queueing Discipline (qdisc) has been proposed to improve the ability qdisc in the variety of network applications. This paper has implemented two methods of queueing discipline, which are classless queueing Token Bucket Filter (TBF) and Stochastic Fair Queueing (SFQ). These qdisc were implemented by using Ad hoc On-Demand Distance Vector (AODV) protocol in several static-mobile and hop scenario over wireless ad-hoc network. In addition, we also examined the effect of tuning the parameters of each qdisc to the performance of TBF and SFQ, which perturb and quantum for SFQ, rate and burst for TBF. Based on the gained insight, both TBF and SFQ have better performance in static scenario. Tuning parameters on the value and specific scenario is quite influential in SFQ and TBF performance.
{"title":"TBF and SFQ performance analysis using AODV UU on wireless ad-hoc network implementation","authors":"Riana Mahilda, Istikmal, I. D. Irawati","doi":"10.1109/ICWT.2017.8284152","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284152","url":null,"abstract":"Several traffic control algorithms on Queueing Discipline (qdisc) has been proposed to improve the ability qdisc in the variety of network applications. This paper has implemented two methods of queueing discipline, which are classless queueing Token Bucket Filter (TBF) and Stochastic Fair Queueing (SFQ). These qdisc were implemented by using Ad hoc On-Demand Distance Vector (AODV) protocol in several static-mobile and hop scenario over wireless ad-hoc network. In addition, we also examined the effect of tuning the parameters of each qdisc to the performance of TBF and SFQ, which perturb and quantum for SFQ, rate and burst for TBF. Based on the gained insight, both TBF and SFQ have better performance in static scenario. Tuning parameters on the value and specific scenario is quite influential in SFQ and TBF performance.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"77 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":"131898763","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/ICWT.2017.8284146
A. Ridwan, Atik Charisma, M. R. Hidayat, E. Taryana, A. Munir
This paper presents the design of radiator for wireless charging application using meandering form technique of spiral shape. The proposed wireless charging radiator is designed on a 1.6mm thick FR4 epoxy dielectric substrate workable at the frequency of 13.5MHz. To improve the performance of radiator, the method of planar inverted-F structure is implemented by adding a short pin at the end of radiator. This method can enhance the value of S11 wherein simulation result of the radiator without planar inverted-F structure has S11 value of −13.27dB, while the radiator with planar inverted-F structure has S11 value of −37.73dB. Beside enhancing the value of S11, the use of planar inverted-F structure is reducible the overall size of radiator by cutting off the radiator strip up to 2.617m. Therefore, by implementing planar inverted-F structure the size of radiator is 240mm × 240mm with the length of radiator strip from the probe to the short pin as far as 5.993m.
{"title":"Implementation of planar inverted-F structure for wireless charging radiator","authors":"A. Ridwan, Atik Charisma, M. R. Hidayat, E. Taryana, A. Munir","doi":"10.1109/ICWT.2017.8284146","DOIUrl":"https://doi.org/10.1109/ICWT.2017.8284146","url":null,"abstract":"This paper presents the design of radiator for wireless charging application using meandering form technique of spiral shape. The proposed wireless charging radiator is designed on a 1.6mm thick FR4 epoxy dielectric substrate workable at the frequency of 13.5MHz. To improve the performance of radiator, the method of planar inverted-F structure is implemented by adding a short pin at the end of radiator. This method can enhance the value of S11 wherein simulation result of the radiator without planar inverted-F structure has S11 value of −13.27dB, while the radiator with planar inverted-F structure has S11 value of −37.73dB. Beside enhancing the value of S11, the use of planar inverted-F structure is reducible the overall size of radiator by cutting off the radiator strip up to 2.617m. Therefore, by implementing planar inverted-F structure the size of radiator is 240mm × 240mm with the length of radiator strip from the probe to the short pin as far as 5.993m.","PeriodicalId":273103,"journal":{"name":"2017 3rd International Conference on Wireless and Telematics (ICWT)","volume":"12 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":"114605738","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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