Pub Date : 2016-12-01DOI: 10.1109/APMC.2016.7931402
A. Kamma, R. Das, J. Mukherjee
A novel, compact, multiple band notch filter (MBNF) is presented. Contiguous and concentric split ring resonators (SRRs) and ring resonator are used to achieve desired multiple narrow band notches. These band notches have been designed to avoid the undesired interference between co-existing wireless channels. Proposed filter is implemented on RT/Duroid 5880 (εr=2.2) substrate of thickness 0.785 mm and surface area of 14 × 14 sq. mm. Insertion loss of the proposed filter at notch bands is high (>13 dB) and low (<0.8 dB) elsewhere. Measured results are correlated with simulated results and ensure proposed filter is a suitable candidate to mitigate interference caused by the co-existing and emerging wireless technologies.
{"title":"Multiple band notch filter using contiguous split ring resonators (SRR)","authors":"A. Kamma, R. Das, J. Mukherjee","doi":"10.1109/APMC.2016.7931402","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931402","url":null,"abstract":"A novel, compact, multiple band notch filter (MBNF) is presented. Contiguous and concentric split ring resonators (SRRs) and ring resonator are used to achieve desired multiple narrow band notches. These band notches have been designed to avoid the undesired interference between co-existing wireless channels. Proposed filter is implemented on RT/Duroid 5880 (εr=2.2) substrate of thickness 0.785 mm and surface area of 14 × 14 sq. mm. Insertion loss of the proposed filter at notch bands is high (>13 dB) and low (<0.8 dB) elsewhere. Measured results are correlated with simulated results and ensure proposed filter is a suitable candidate to mitigate interference caused by the co-existing and emerging wireless technologies.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116727954","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931399
O. Olukoya, D. Budimir
This paper presents a highly compact inkjet printed microstrip bandstop filter (BSF) for interference suppression in multi-standard wireless applications. The structure is designed with strict specifications for inkjet printing such as the use of the Kapton substrate and its flexible polyimide film. The design was simulated based on Kapton substrate with a thickness of 50µm and dielectric constant of 3.4. The simulated results show a good narrowband response with good stopband attenuation of about 38 dB. When compared to other published BSFs, the proposed structure occupies the least normalized area and best return loss performance up to 10 GHz. This filter is then used to reject interference in a multi-standard wireless transmitter system with suppression of about 30 dB achieved with a great level of noise and spurious response reduction thereby improving the overall performance of the system. This type of filter will be very useful to eliminate undesired signals in next generation 4G LTE-Advanced and 5G mobile networks as well as being very attractive for modern day multi-standard wireless applications such as machine to machine (M2M) communications and internet of things (IoT).
{"title":"Inkjet-printed bandstop filters for interference suppression in multi-standard wireless systems","authors":"O. Olukoya, D. Budimir","doi":"10.1109/APMC.2016.7931399","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931399","url":null,"abstract":"This paper presents a highly compact inkjet printed microstrip bandstop filter (BSF) for interference suppression in multi-standard wireless applications. The structure is designed with strict specifications for inkjet printing such as the use of the Kapton substrate and its flexible polyimide film. The design was simulated based on Kapton substrate with a thickness of 50µm and dielectric constant of 3.4. The simulated results show a good narrowband response with good stopband attenuation of about 38 dB. When compared to other published BSFs, the proposed structure occupies the least normalized area and best return loss performance up to 10 GHz. This filter is then used to reject interference in a multi-standard wireless transmitter system with suppression of about 30 dB achieved with a great level of noise and spurious response reduction thereby improving the overall performance of the system. This type of filter will be very useful to eliminate undesired signals in next generation 4G LTE-Advanced and 5G mobile networks as well as being very attractive for modern day multi-standard wireless applications such as machine to machine (M2M) communications and internet of things (IoT).","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116796142","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931437
K. Eccleston, I. Platt
An entirely printed NRI metamaterial based upon arrays of split-ring-resonators (SRRs) and strip conductors is proposed. Unlike other SRR / strip conductor based NRI metamaterials, the density of the strips is considerably less than that of the SRRs. This thinned array of strips, along with the use of broad-side coupled SRRs permits operation at low microwave frequencies without lumped inductors. The calculated, simulated and experimental results, for an NRI metamaterial, operating at 3 GHz, and mounted in a waveguide test fixture, demonstrates the feasibility of this approach.
{"title":"Printed NRI metamaterial based on broad-side-coupled SRRs and a thinned array of strips","authors":"K. Eccleston, I. Platt","doi":"10.1109/APMC.2016.7931437","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931437","url":null,"abstract":"An entirely printed NRI metamaterial based upon arrays of split-ring-resonators (SRRs) and strip conductors is proposed. Unlike other SRR / strip conductor based NRI metamaterials, the density of the strips is considerably less than that of the SRRs. This thinned array of strips, along with the use of broad-side coupled SRRs permits operation at low microwave frequencies without lumped inductors. The calculated, simulated and experimental results, for an NRI metamaterial, operating at 3 GHz, and mounted in a waveguide test fixture, demonstrates the feasibility of this approach.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122017161","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931435
A. Poddar, U. Rohde, S. Koul
MTM (Metamaterial) is a negative index composite structure, involves multi-disciplinary engineering challenges and opportunity. This paper reports MTM inspired structure for analyzing and Casimir effect GW (Gravity Wave) detection.
{"title":"MTM: Casimir effect and Gravity Wave detection","authors":"A. Poddar, U. Rohde, S. Koul","doi":"10.1109/APMC.2016.7931435","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931435","url":null,"abstract":"MTM (Metamaterial) is a negative index composite structure, involves multi-disciplinary engineering challenges and opportunity. This paper reports MTM inspired structure for analyzing and Casimir effect GW (Gravity Wave) detection.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123684123","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931307
D. Kant, L. Joshi, V. Janyani
A 352.2 MHz klystron with an output power of 100 kw (CW) is under development at CSIR-CEERI for charged particle accelerator application. A study for the design of RF interaction structure of this klystron has been carried out to get the optimized design parameters. Initially 1-D code AJDISK has been used to predict the interaction parameters of RF structure which is optimized using MAGIC(2D/3D), to get the desired performance of the device. CST Microwave Studio has been used for design of input and output coupler. The paper shall present various simulation results of beam wave interaction.
{"title":"Design of RF interaction structure for a 352.2 MHz, 100 kW (CW) power klystron","authors":"D. Kant, L. Joshi, V. Janyani","doi":"10.1109/APMC.2016.7931307","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931307","url":null,"abstract":"A 352.2 MHz klystron with an output power of 100 kw (CW) is under development at CSIR-CEERI for charged particle accelerator application. A study for the design of RF interaction structure of this klystron has been carried out to get the optimized design parameters. Initially 1-D code AJDISK has been used to predict the interaction parameters of RF structure which is optimized using MAGIC(2D/3D), to get the desired performance of the device. CST Microwave Studio has been used for design of input and output coupler. The paper shall present various simulation results of beam wave interaction.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121664854","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931284
Sarthak Singhal, A. Singh
A microstrip line fed star fractal antenna for super wideband applications is presented. Second iterative star shaped fractal geometry of the radiator, modified feedline and notch loaded semi-elliptical ground plane are used to achieve an impedance bandwidth of 4.6–52 GHz. A good agreement is observed between the simulated and experimental results. It has an overall volume of 19.7×19×1.6 mm3. It has advantages of miniaturized dimensions and wider bandwidth over previously reported structures.
{"title":"Microstrip fed star super wideband fractal antenna","authors":"Sarthak Singhal, A. Singh","doi":"10.1109/APMC.2016.7931284","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931284","url":null,"abstract":"A microstrip line fed star fractal antenna for super wideband applications is presented. Second iterative star shaped fractal geometry of the radiator, modified feedline and notch loaded semi-elliptical ground plane are used to achieve an impedance bandwidth of 4.6–52 GHz. A good agreement is observed between the simulated and experimental results. It has an overall volume of 19.7×19×1.6 mm3. It has advantages of miniaturized dimensions and wider bandwidth over previously reported structures.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"463 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122810380","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931312
Mohan Kumar Y.N, P. Duraiswamy
The purpose of this work is to maximize the efficiency of rectifier topologies used for wireless power transmission system operating at 2.4 GHz. This paper particularly presents the design of GaN Schottky diode rectifier circuit topologies including series diode half wave rectifier, shunt diode half wave rectifier and voltage doubler rectifier. Micro-strip matching networks are designed and optimized to reduce the reflection losses and increase the efficiency of the rectifier. A comparative study shows that the voltage doubler rectifier has higher efficiency than the series and shunt diode rectifiers. The simulation results show that the GaN Schottky diode voltage doubler rectifier circuit gives an efficiency of 78.2 percentage with an input power of 34 dBm when using a load resistance of 1000 Ohms.
{"title":"On the optimization of GaN Schottky Diode rectifier circuit topologies for high efficiency Wireless Power Transmission","authors":"Mohan Kumar Y.N, P. Duraiswamy","doi":"10.1109/APMC.2016.7931312","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931312","url":null,"abstract":"The purpose of this work is to maximize the efficiency of rectifier topologies used for wireless power transmission system operating at 2.4 GHz. This paper particularly presents the design of GaN Schottky diode rectifier circuit topologies including series diode half wave rectifier, shunt diode half wave rectifier and voltage doubler rectifier. Micro-strip matching networks are designed and optimized to reduce the reflection losses and increase the efficiency of the rectifier. A comparative study shows that the voltage doubler rectifier has higher efficiency than the series and shunt diode rectifiers. The simulation results show that the GaN Schottky diode voltage doubler rectifier circuit gives an efficiency of 78.2 percentage with an input power of 34 dBm when using a load resistance of 1000 Ohms.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131354163","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931488
Dr. Jagannath Malik, A. Patnaik, M. V. Kartikeyan
In this paper, authors present a time-domain performance analysis and comparison of various band-notch techniques that are popularly used in UWB antennas. Three different band-notch techniques are implemented to a reference UWB antenna to realize a band-notch behavior at WLAN band. The antennas are analyzed in both frequency domain and time domain. The present study explores time-domain behavior i.e. pulse distortion and ringing due to band-notched techniques to UWB antennas.
{"title":"Time-domain performance of band-notch techniques in UWB antenna","authors":"Dr. Jagannath Malik, A. Patnaik, M. V. Kartikeyan","doi":"10.1109/APMC.2016.7931488","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931488","url":null,"abstract":"In this paper, authors present a time-domain performance analysis and comparison of various band-notch techniques that are popularly used in UWB antennas. Three different band-notch techniques are implemented to a reference UWB antenna to realize a band-notch behavior at WLAN band. The antennas are analyzed in both frequency domain and time domain. The present study explores time-domain behavior i.e. pulse distortion and ringing due to band-notched techniques to UWB antennas.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122315539","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931463
Pujayita Saha, Bappaditya Mandal, A. Chatterjee, S. K. Parui
In this article a compact wearable Harmes Paris logo antenna for multiband applications is presented. For proper antenna design, the electrical properties of various leathers are measured. The antenna has been optimized to operate within the ISM frequency bands with centre frequencies are 2.41GHz as well as 3.1GHz and 3.7GHz.
{"title":"Harmes Paris logo shaped wearable antenna for multiband applications","authors":"Pujayita Saha, Bappaditya Mandal, A. Chatterjee, S. K. Parui","doi":"10.1109/APMC.2016.7931463","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931463","url":null,"abstract":"In this article a compact wearable Harmes Paris logo antenna for multiband applications is presented. For proper antenna design, the electrical properties of various leathers are measured. The antenna has been optimized to operate within the ISM frequency bands with centre frequencies are 2.41GHz as well as 3.1GHz and 3.7GHz.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129883736","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931425
M. Abbasi, D. Ricketts
This paper introduces a new way of evaluating performance of mm-wave integrated multiplier chains based on the power efficiency. Although superior performance of III–V technologies are acknowledged, focus of the paper will be on Silicon circuits which are more suited for large-scale multi-element integrated arrays. It will be discussed that power efficiency of the multiplier chain including the dc power required for generating the input RF signal is a very important metric for selecting the topology and configuration of the system. We will demonstrate that proper choice of topology as well as optimized circuit design yield state-of-the art output power at 260GHz–280GHz in SiGe and CMOS circuits.
{"title":"mm-Wave and THz multipliers: Advances and opportunities","authors":"M. Abbasi, D. Ricketts","doi":"10.1109/APMC.2016.7931425","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931425","url":null,"abstract":"This paper introduces a new way of evaluating performance of mm-wave integrated multiplier chains based on the power efficiency. Although superior performance of III–V technologies are acknowledged, focus of the paper will be on Silicon circuits which are more suited for large-scale multi-element integrated arrays. It will be discussed that power efficiency of the multiplier chain including the dc power required for generating the input RF signal is a very important metric for selecting the topology and configuration of the system. We will demonstrate that proper choice of topology as well as optimized circuit design yield state-of-the art output power at 260GHz–280GHz in SiGe and CMOS circuits.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129986652","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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