Pub Date : 2016-12-01DOI: 10.1109/APMC.2016.7931340
Shailendra Singh, S. Pal, M. D. Upadhayay
In this paper, we first make a theoretical and numerical analysis of electromagnetic (EM) vertex wave, which carries rotating phase (helical) front and orbital angular momentum (OAM). Subsequently 8 elements rectangular inset feed incrementally phased Circular Array (CA) Antenna is simulated which can generate Orbital Angular Momentum beam at 10 GHz. The simulated results verifies rotating phase with the result from the mathematical analysis.
{"title":"Generation of OAM mode using radially oriented Circular Array","authors":"Shailendra Singh, S. Pal, M. D. Upadhayay","doi":"10.1109/APMC.2016.7931340","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931340","url":null,"abstract":"In this paper, we first make a theoretical and numerical analysis of electromagnetic (EM) vertex wave, which carries rotating phase (helical) front and orbital angular momentum (OAM). Subsequently 8 elements rectangular inset feed incrementally phased Circular Array (CA) Antenna is simulated which can generate Orbital Angular Momentum beam at 10 GHz. The simulated results verifies rotating phase with the result from the mathematical analysis.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"250 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114093322","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.2016.7931426
Chen Zhang, L. Deng, W. Hong, Shu Fang Li
In this work, a three-dimensional (3D) simultaneous arbitrary-way orbital angular momentum (OAM) generator is presented. The proposed generator is constructed by a group of transformation cylinders filled with metamaterials. Using transformation cylinders, arbitrary-way planar wave fronts can be simultaneously converted to helical wave fronts with arbitrary topological charges. Firstly, the principle of orbital angular momentum is introduced. Then, a designing method of metamaterials based on transformation optics is interpreted to construct a 3D simultaneous arbitrary-way OAM generator with different topological charges. At last, the simulations on electric field and phase of output beams are performed, which validate the function of this design. The results show that arbitrary-way beams carrying OAM with specific topological charges can be obtained simultaneous by the proposed device.
{"title":"Three-dimensional simultaneous arbitrary-way orbital angular momentum generator for future communication applications","authors":"Chen Zhang, L. Deng, W. Hong, Shu Fang Li","doi":"10.1109/APMC.2016.7931426","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931426","url":null,"abstract":"In this work, a three-dimensional (3D) simultaneous arbitrary-way orbital angular momentum (OAM) generator is presented. The proposed generator is constructed by a group of transformation cylinders filled with metamaterials. Using transformation cylinders, arbitrary-way planar wave fronts can be simultaneously converted to helical wave fronts with arbitrary topological charges. Firstly, the principle of orbital angular momentum is introduced. Then, a designing method of metamaterials based on transformation optics is interpreted to construct a 3D simultaneous arbitrary-way OAM generator with different topological charges. At last, the simulations on electric field and phase of output beams are performed, which validate the function of this design. The results show that arbitrary-way beams carrying OAM with specific topological charges can be obtained simultaneous by the proposed device.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"354 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":"115926919","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.2016.7931261
S. Sahoo, K. K. Katare, A. Biswas
In this paper, a planar dielectric phase correcting structure (PCS) along with partially reflecting surface (PRS) is used to enhance the gain of cylindrical dielectric resonator antenna (CDRA) up to 14.5 dBi at the design frequency of 10 GHz. PRS loaded CDRA forms electromagnetic bandgap resonator antenna (ERA). ERA gives high gain due to presence of multiple reflections between completely reflecting ground plane surface and partially reflecting dielectric surface. Non-uniform phase distribution of electric field over the ERA aperture generally degrades the radiation characteristics of antenna. In order to achieve further gain improvement, planar multi-dielectric PCS is used to transform non-uniform phase distribution to relatively uniform phase distribution over the ERA aperture.
{"title":"Gain enhancement of CDRA using partially reflecting surface and phase correcting structure","authors":"S. Sahoo, K. K. Katare, A. Biswas","doi":"10.1109/APMC.2016.7931261","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931261","url":null,"abstract":"In this paper, a planar dielectric phase correcting structure (PCS) along with partially reflecting surface (PRS) is used to enhance the gain of cylindrical dielectric resonator antenna (CDRA) up to 14.5 dBi at the design frequency of 10 GHz. PRS loaded CDRA forms electromagnetic bandgap resonator antenna (ERA). ERA gives high gain due to presence of multiple reflections between completely reflecting ground plane surface and partially reflecting dielectric surface. Non-uniform phase distribution of electric field over the ERA aperture generally degrades the radiation characteristics of antenna. In order to achieve further gain improvement, planar multi-dielectric PCS is used to transform non-uniform phase distribution to relatively uniform phase distribution over the ERA aperture.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"86 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":"121726142","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.2016.7931369
R. Allanic, Y. Quéré, D. Le Berre, C. Quendo
This paper deals with a novel approach to co-design a microstrip line associated with a distributed PIN switch in a semiconductor substrate. An High-Resistivity Silicon (HR-Si) substrate was chosen to optimize the trade-off between semiconductor effects and microwave propagation. Indeed, thanks to this particular substrate, the novel co-design concept is illustrated by an integrated and distributed switch based on an N+PP+ junction. This concept offers great flexibility in the design of tunable microwave devices. Moreover, applied to tunable distributed systems (antennas, filters, etc) in planar technology, it makes it possible to avoid the need for reported components or metalized holes. The coupling between semiconductors and microwave devices is taken into account thanks to a new co-design flow. Two demonstrators, with switchable doped microstrip lines, are manufactured and measured to validate the approach. The performances achieved in terms of insertion losses (IL) and isolation (Iso) were lower than 2.8 dB and higher than 40 dB, respectively, over the whole frequency band under consideration (from DC to 20 GHz).
{"title":"A novel approach to co-design microwave devices with distributed switches","authors":"R. Allanic, Y. Quéré, D. Le Berre, C. Quendo","doi":"10.1109/APMC.2016.7931369","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931369","url":null,"abstract":"This paper deals with a novel approach to co-design a microstrip line associated with a distributed PIN switch in a semiconductor substrate. An High-Resistivity Silicon (HR-Si) substrate was chosen to optimize the trade-off between semiconductor effects and microwave propagation. Indeed, thanks to this particular substrate, the novel co-design concept is illustrated by an integrated and distributed switch based on an N+PP+ junction. This concept offers great flexibility in the design of tunable microwave devices. Moreover, applied to tunable distributed systems (antennas, filters, etc) in planar technology, it makes it possible to avoid the need for reported components or metalized holes. The coupling between semiconductors and microwave devices is taken into account thanks to a new co-design flow. Two demonstrators, with switchable doped microstrip lines, are manufactured and measured to validate the approach. The performances achieved in terms of insertion losses (IL) and isolation (Iso) were lower than 2.8 dB and higher than 40 dB, respectively, over the whole frequency band under consideration (from DC to 20 GHz).","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"87 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":"121931010","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.2016.7931263
Nidheesh Kumar T R, N. Kumar, M. Sreenivasan, K. G. Thomas, P. H. Rao
A multi-layer tilted beam planar microstrip array for FMCW-SAR application is presented. The proposed 8×4 array antenna exhibits a beam tilt of 30 degrees in E-plane with a sidelobe level of 18dB and 20dB in H-plane without tilt. The inherent radiation pattern degradation of the array due to feed radiation is minimized with the proposed multilayered concept. The proposed design exhibits an improvement in sidelobe level of the order of 6dB in both E-and H-planes with better cross-polarization level. In the multi-layered design, the common ground plane separating the two stacked substrate layers, shields the antenna half-space from spurious radiation emitted from the feed network. The simulation results show that the radiation pattern in the operating frequency provides a 3dB beamwidths of 25° and 9° in E-plane and H-plane respectively. Array exhibits a gain of 20dBi at the centre frequency and cross polarization level of better than 15dB.
{"title":"A multi-layer X-Band microstrip array with beam tilt for FMCW-SAR application","authors":"Nidheesh Kumar T R, N. Kumar, M. Sreenivasan, K. G. Thomas, P. H. Rao","doi":"10.1109/APMC.2016.7931263","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931263","url":null,"abstract":"A multi-layer tilted beam planar microstrip array for FMCW-SAR application is presented. The proposed 8×4 array antenna exhibits a beam tilt of 30 degrees in E-plane with a sidelobe level of 18dB and 20dB in H-plane without tilt. The inherent radiation pattern degradation of the array due to feed radiation is minimized with the proposed multilayered concept. The proposed design exhibits an improvement in sidelobe level of the order of 6dB in both E-and H-planes with better cross-polarization level. In the multi-layered design, the common ground plane separating the two stacked substrate layers, shields the antenna half-space from spurious radiation emitted from the feed network. The simulation results show that the radiation pattern in the operating frequency provides a 3dB beamwidths of 25° and 9° in E-plane and H-plane respectively. Array exhibits a gain of 20dBi at the centre frequency and cross polarization level of better than 15dB.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"31 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854049","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.2016.7931382
A. Barakat, Sherif Hekal, R. Pokharel
This paper presents a simple and precise design method for asymmetric resonant inductive coupled wireless power transfer (WPT) systems without the involvement of circuit or electromagnetic (EM) simulators. The design method is based on the generalized second-order band-pass filter (BPF). First, the values of the BPF's J-inverters are computed based on the mutual coupling between the transmitter (TX) and the receiver (RX). Then, the required components are extracted from the J-inverters values. We achieved good agreements between the analytical design procedure, the circuit and the EM simulations, and the measurements. The measured efficiency is 75% at a transmission distance of 38 mm, and the sizes of the TX and RX are 50×50 mm2 and 30×30 mm2, respectively.
{"title":"Simple design approach for asymmetric resonant inductive coupled WPT systems using J-inverters","authors":"A. Barakat, Sherif Hekal, R. Pokharel","doi":"10.1109/APMC.2016.7931382","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931382","url":null,"abstract":"This paper presents a simple and precise design method for asymmetric resonant inductive coupled wireless power transfer (WPT) systems without the involvement of circuit or electromagnetic (EM) simulators. The design method is based on the generalized second-order band-pass filter (BPF). First, the values of the BPF's J-inverters are computed based on the mutual coupling between the transmitter (TX) and the receiver (RX). Then, the required components are extracted from the J-inverters values. We achieved good agreements between the analytical design procedure, the circuit and the EM simulations, and the measurements. The measured efficiency is 75% at a transmission distance of 38 mm, and the sizes of the TX and RX are 50×50 mm2 and 30×30 mm2, respectively.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"8 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":"128369416","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.2016.7931334
Arani Ali Khan, M. Mandal
In this paper, a dual-band bandpass filter is proposed in substrate integrated waveguide (SIW) technology. A single cavity that supports both TE101 and TE201 resonating modes is used for the design. The two passbands are created by the two modes. To improve the selectivity, one bypass coupling path is introduced which provides additional transmission zero. The procedures to control the passband center frequencies as well as their bandwidths are presented. A prototype narrowband bandpass filter with the center frequencies of two passbands as 10 GHz and 11 GHz is fabricated for space applications. The 3 dB fractional bandwidths are 3% and 1.6%, respectively. The measured insertion losses at the passband center frequencies are 1.4 dB and 2.6 dB, respectively.
{"title":"Dual-band substrate integrated waveguide filter with independently controllable bandwidth","authors":"Arani Ali Khan, M. Mandal","doi":"10.1109/APMC.2016.7931334","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931334","url":null,"abstract":"In this paper, a dual-band bandpass filter is proposed in substrate integrated waveguide (SIW) technology. A single cavity that supports both TE101 and TE201 resonating modes is used for the design. The two passbands are created by the two modes. To improve the selectivity, one bypass coupling path is introduced which provides additional transmission zero. The procedures to control the passband center frequencies as well as their bandwidths are presented. A prototype narrowband bandpass filter with the center frequencies of two passbands as 10 GHz and 11 GHz is fabricated for space applications. The 3 dB fractional bandwidths are 3% and 1.6%, respectively. The measured insertion losses at the passband center frequencies are 1.4 dB and 2.6 dB, respectively.","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":"128855928","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.2016.7931481
Sanjeev Kumar, S. Chatterjee, S. Koul
This paper presents two patch antennae at a nominal resonance frequency of 77 GHz, namely a thin-substrate antenna and a thick-substrate antenna, using a standard 0.18 µm CMOS technology. Both the antennae are implemented on metal-6. The thin-substrate antenna uses metal-5 as the ground plane, and the thick-substrate antenna uses metal-1 as the ground plane. The thin-substrate antenna was fabricated on a 0.18 µm CMOS process and characterized. The thick-substrate antenna was only simulated. Measurements of the thin-substrate antenna show a peak S11 of −18.22 dB at 99.8 GHz. In simulation, the thin-substrate antenna has a peak gain and radiation efficiency of −25 dB and 1% respectively at 77 GHz. The thick-substrate antenna has a simulated peak gain and radiation efficiency of 5.18 dB and 58.31% respectively at 77 GHz.
{"title":"77 GHz integrated patch antennae in 0.18 µm CMOS technology","authors":"Sanjeev Kumar, S. Chatterjee, S. Koul","doi":"10.1109/APMC.2016.7931481","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931481","url":null,"abstract":"This paper presents two patch antennae at a nominal resonance frequency of 77 GHz, namely a thin-substrate antenna and a thick-substrate antenna, using a standard 0.18 µm CMOS technology. Both the antennae are implemented on metal-6. The thin-substrate antenna uses metal-5 as the ground plane, and the thick-substrate antenna uses metal-1 as the ground plane. The thin-substrate antenna was fabricated on a 0.18 µm CMOS process and characterized. The thick-substrate antenna was only simulated. Measurements of the thin-substrate antenna show a peak S11 of −18.22 dB at 99.8 GHz. In simulation, the thin-substrate antenna has a peak gain and radiation efficiency of −25 dB and 1% respectively at 77 GHz. The thick-substrate antenna has a simulated peak gain and radiation efficiency of 5.18 dB and 58.31% respectively at 77 GHz.","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":"129038251","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.2016.7931269
Joydeb Mandal, M. Mandal
This paper presents a design of broadband phase shifters using a slow-wave microstrip line structure. The slow wave structure is realized by placing periodic circular grounded metal patches below the top layer metal strip. The slow wave structure provides linear phase response over a wide range of frequency which is then utilized to design the broadband phase shifters. A set of graphs are presented to ease the design procedure. The main advantage of the proposed structure is that any phase shift value over the range 0°–360° can be designed. To verify the proposed technique, a prototype 90° differential phase shifter is fabricated for X-band application. The measured reflection loss is more than 22 dB and insertion loss is less than 0.88 dB. Also measured phase deviation is below 8° over the whole band.
{"title":"Wideband differential phase shifters using slow-wave microstrip line structure","authors":"Joydeb Mandal, M. Mandal","doi":"10.1109/APMC.2016.7931269","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931269","url":null,"abstract":"This paper presents a design of broadband phase shifters using a slow-wave microstrip line structure. The slow wave structure is realized by placing periodic circular grounded metal patches below the top layer metal strip. The slow wave structure provides linear phase response over a wide range of frequency which is then utilized to design the broadband phase shifters. A set of graphs are presented to ease the design procedure. The main advantage of the proposed structure is that any phase shift value over the range 0°–360° can be designed. To verify the proposed technique, a prototype 90° differential phase shifter is fabricated for X-band application. The measured reflection loss is more than 22 dB and insertion loss is less than 0.88 dB. Also measured phase deviation is below 8° over the whole band.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"64 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":"129498869","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.2016.7931301
A. Pandey
This paper presents the design of a unique multimode extractor and converter of higher order modes of a circular waveguide. The multi-mode extractor couples first five circular waveguide propagation modes TE11, orthogonal TE11(o), TM01, TE21, and TE21(o) that includes the three tracking signals (i.e. sum signal, elevation signal, and azimuth signal) used in a high-frequency monopulse tracking system and two communication channels for transmitting and receiving signal at Ka band. This design is based on amplitude and phase characteristics of the higher-order modes TM01, TE21, and TE21(o) excited in circular waveguide. TE21 and TE21 (o) modes are extracted from circular waveguide to TE10 mode in rectangular waveguide by two longitudinal slots milled in the circular waveguide. TE11 mode is coupled using two coupling slots and H-plane power combiner. A turnstile junction is used to extract TM01 and TE11(o) mode. This multimode tracking system is designed both for linear or circular polarized ground earth station antennas to track orbiting satellites.
{"title":"Design of multimode tracking system for earth station antenna","authors":"A. Pandey","doi":"10.1109/APMC.2016.7931301","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931301","url":null,"abstract":"This paper presents the design of a unique multimode extractor and converter of higher order modes of a circular waveguide. The multi-mode extractor couples first five circular waveguide propagation modes TE11, orthogonal TE11(o), TM01, TE21, and TE21(o) that includes the three tracking signals (i.e. sum signal, elevation signal, and azimuth signal) used in a high-frequency monopulse tracking system and two communication channels for transmitting and receiving signal at Ka band. This design is based on amplitude and phase characteristics of the higher-order modes TM01, TE21, and TE21(o) excited in circular waveguide. TE21 and TE21 (o) modes are extracted from circular waveguide to TE10 mode in rectangular waveguide by two longitudinal slots milled in the circular waveguide. TE11 mode is coupled using two coupling slots and H-plane power combiner. A turnstile junction is used to extract TM01 and TE11(o) mode. This multimode tracking system is designed both for linear or circular polarized ground earth station antennas to track orbiting satellites.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"38 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":"129754743","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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