Pub Date : 2016-12-01DOI: 10.1109/APMC.2016.7931349
Karan Gumber, M. Rawat
This paper investigates digital predistorter design using linear splines polynomial (LSP) and its implementation in 16-bit fixed point FPGA. The performance of memory polynomial model in fixed point implementation degrades, and LSP model has been proposed as a solution. The performance is evaluated in terms of simulation and measured result. It has been reported that we achieve numerically stable observation matrices using splines, hence accuracy level of coefficients is sufficient to cover full dynamic range in FPGA.
{"title":"Digital predistorter design using linear spline and its fixed point implementation","authors":"Karan Gumber, M. Rawat","doi":"10.1109/APMC.2016.7931349","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931349","url":null,"abstract":"This paper investigates digital predistorter design using linear splines polynomial (LSP) and its implementation in 16-bit fixed point FPGA. The performance of memory polynomial model in fixed point implementation degrades, and LSP model has been proposed as a solution. The performance is evaluated in terms of simulation and measured result. It has been reported that we achieve numerically stable observation matrices using splines, hence accuracy level of coefficients is sufficient to cover full dynamic range in FPGA.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"355 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":"122801241","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.2016.7931478
Ashok Kumar, M. M. Sharma
A quad-band reconfigurable monopole antenna for multiradio wireless systems is presented and designed on Rogers 5880 substrate. The quad-band antenna comprised of circular patch, parasitic double T-stub, two inverted L-stubs. Single diode is employed between stubs to make antenna reconfigurable and obtained four resonance at 2.3/3.89/4.96/5.70 GHz. Impedance bandwidth of antenna are 350/410/110/650 MHz for LTE 2300 and 2.4 GHz WLAN, C-band, 4.9 GHz WLAN, 5.5 GHz WiMAX and 5.8 GHz WLAN bands.
{"title":"A quad-band reconfigurable microstrip-fed circular disc monopole antenna for multiradio wireless systems","authors":"Ashok Kumar, M. M. Sharma","doi":"10.1109/APMC.2016.7931478","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931478","url":null,"abstract":"A quad-band reconfigurable monopole antenna for multiradio wireless systems is presented and designed on Rogers 5880 substrate. The quad-band antenna comprised of circular patch, parasitic double T-stub, two inverted L-stubs. Single diode is employed between stubs to make antenna reconfigurable and obtained four resonance at 2.3/3.89/4.96/5.70 GHz. Impedance bandwidth of antenna are 350/410/110/650 MHz for LTE 2300 and 2.4 GHz WLAN, C-band, 4.9 GHz WLAN, 5.5 GHz WiMAX and 5.8 GHz WLAN bands.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"224 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":"123055563","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.2016.7931385
S. Yadav, Kiran Aseri, M. Sharma
In the propound work, a compact single layer Frequency Selective Surface has been designed that possess the characteristics of being polarization independent. This attribute of the structure gives same frequency response irrespective of the 0° polarization or 90° polarization of electromagnetic wave. In this paper, three designs have been proposed, the first two designs has affected from different polarization but in the last design we have achieved polarization independent FSS as of symmetrical behavior of the structure. The superstrate is incorporated of FR-4 substrate and a single sided PEC layer on it. In the third design, structure possesses quadruple pass band that is Wi-max (2.5 GHz) band, WLAN (5.5 GHz) band, and dual X-band (8.6 /10.9 GHz). CST Microwave Studio 2014 has been used to realize the frequency response via simulations.
在这项工作中，我们设计了一种紧凑的单层频率选择表面，它具有与极化无关的特性。无论电磁波的0°极化还是90°极化，该结构的这一特性都能提供相同的频率响应。本文提出了三种设计，前两种设计受到不同极化的影响，但在最后一种设计中，由于结构的对称性，我们实现了与极化无关的FSS。该上覆层由FR-4衬底和其上的单面PEC层组成。在第三种设计中，结构具有Wi-max (2.5 GHz)频段、WLAN (5.5 GHz)频段和双x频段(8.6 /10.9 GHz)的四通频带。利用CST Microwave Studio 2014进行了频率响应仿真。
{"title":"A polarization independent single layer Frequency Selective Surface for quadruple band pass","authors":"S. Yadav, Kiran Aseri, M. Sharma","doi":"10.1109/APMC.2016.7931385","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931385","url":null,"abstract":"In the propound work, a compact single layer Frequency Selective Surface has been designed that possess the characteristics of being polarization independent. This attribute of the structure gives same frequency response irrespective of the 0° polarization or 90° polarization of electromagnetic wave. In this paper, three designs have been proposed, the first two designs has affected from different polarization but in the last design we have achieved polarization independent FSS as of symmetrical behavior of the structure. The superstrate is incorporated of FR-4 substrate and a single sided PEC layer on it. In the third design, structure possesses quadruple pass band that is Wi-max (2.5 GHz) band, WLAN (5.5 GHz) band, and dual X-band (8.6 /10.9 GHz). CST Microwave Studio 2014 has been used to realize the frequency response via simulations.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"69 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":"126990099","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.2016.7931355
B.A. Belayev, K. Lemberg, A. Serzhantov
This paper presents a ferrite tunable waveguide filter showing high Qu and high tunability in X-band. A new type of waveguide cavity resonator with an H102 operating mode was proposed for the creation of a low-loss, two-pole filter. The filter results in an insertion loss of 3.6–4.1 dB over the tuning range 8.74–9.63 GHz with a relative bandwidth of 0.92–0.79% and biasing magnetic field 0–600 Oe. This design demonstrates an unloaded quality factor of 380–396 over the tunable frequency range.
{"title":"An X-band magnetically tunable bandpass filter based on novel waveguide cavity resonator","authors":"B.A. Belayev, K. Lemberg, A. Serzhantov","doi":"10.1109/APMC.2016.7931355","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931355","url":null,"abstract":"This paper presents a ferrite tunable waveguide filter showing high Q<inf>u</inf> and high tunability in X-band. A new type of waveguide cavity resonator with an H<inf>102</inf> operating mode was proposed for the creation of a low-loss, two-pole filter. The filter results in an insertion loss of 3.6–4.1 dB over the tuning range 8.74–9.63 GHz with a relative bandwidth of 0.92–0.79% and biasing magnetic field 0–600 Oe. This design demonstrates an unloaded quality factor of 380–396 over the tunable frequency range.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"18 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":"133215156","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.2016.7931335
A. Kamma, R. Das, J. Mukherjee
A novel controllable dual-band bandpass filter (BPF) with excellent band-to-band rejection is presented in this paper. The dual band filter consists of a dual split ring resonator having splits on opposite sides with inductive short stub split ring resonator (ISSSRR). Even and odd mode analysis has been performed to calculate the resonance frequencies. Three transmission zeros(TZs) are achieved between two passbands by both electric or magnetic dominant coupling and also cancellation effect of electric and magnetic coupling, resulting in high passband selectivity and improved band-to-band isolation. The proposed dual band pass filter has the advantages of being compact with more degree of freedom to achieve desired pass bands by controlling the electric and magnetic coupling. The proposed BPF achieved insertion loss of 0.5 dB and 0.8 dB at 3.35 and 5.75 GHz, respectively.
{"title":"Controllable dual-mode dual-passband filter using inductive short stub SRR (ISSSRR)","authors":"A. Kamma, R. Das, J. Mukherjee","doi":"10.1109/APMC.2016.7931335","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931335","url":null,"abstract":"A novel controllable dual-band bandpass filter (BPF) with excellent band-to-band rejection is presented in this paper. The dual band filter consists of a dual split ring resonator having splits on opposite sides with inductive short stub split ring resonator (ISSSRR). Even and odd mode analysis has been performed to calculate the resonance frequencies. Three transmission zeros(TZs) are achieved between two passbands by both electric or magnetic dominant coupling and also cancellation effect of electric and magnetic coupling, resulting in high passband selectivity and improved band-to-band isolation. The proposed dual band pass filter has the advantages of being compact with more degree of freedom to achieve desired pass bands by controlling the electric and magnetic coupling. The proposed BPF achieved insertion loss of 0.5 dB and 0.8 dB at 3.35 and 5.75 GHz, respectively.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"24 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":"132247969","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.2016.7931347
T. Huber, R. Quay, W. Bösch
This paper presents the realization and performance of two multi-decade GaN feedback power amplifiers from 10 kHz to at least 12 GHz. The common-source feedback power amplifier achieves a gain of about 13 dB with a bandwidth of 12 GHz while maintaining an input and output matching of better than −10 dB. The equivalent cascode design possess a bandwidth of 17 GHz, which is ≈ 40 % more than the common-source design. At a bias of 20V/150mA, both designs offer a Psat of >1 W and an OIP3 of about 37 dBm for the common-source design and even 39 dBm for the cascode design. Furthermore, noise figures of less than 5 dB were obtained for the common-source and the cascode topology.
{"title":"Multi-decade GaN feedback power amplifiers in common-source and cascode topology","authors":"T. Huber, R. Quay, W. Bösch","doi":"10.1109/APMC.2016.7931347","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931347","url":null,"abstract":"This paper presents the realization and performance of two multi-decade GaN feedback power amplifiers from 10 kHz to at least 12 GHz. The common-source feedback power amplifier achieves a gain of about 13 dB with a bandwidth of 12 GHz while maintaining an input and output matching of better than −10 dB. The equivalent cascode design possess a bandwidth of 17 GHz, which is ≈ 40 % more than the common-source design. At a bias of 20V/150mA, both designs offer a Psat of >1 W and an OIP3 of about 37 dBm for the common-source design and even 39 dBm for the cascode design. Furthermore, noise figures of less than 5 dB were obtained for the common-source and the cascode topology.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"52 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":"133135994","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.2016.7931340
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.2016.7931393
R. Jaiswal, N. Pathak
This paper reports the spoof surface plasmons polaritons (SSPPs) based multi-band bandpass filter. An efficient back to back transition from Quasi TEM mode of microstrip line to SSPP mode has been designed by etching a gradient corrugated structure on the metal strip; while keeping ground plane unaltered. SSPP wave is found to be highly confined within the teeth part of corrugation. Complementary split ring resonator has been etched in the ground plane to obtained multiband bandpass filter response. Excellent conversion from QTEM mode to SSPP mode has been observed.
{"title":"Spoof surface plasmon polaritons (SSPP) based multi-band bandpass filter","authors":"R. Jaiswal, N. Pathak","doi":"10.1109/APMC.2016.7931393","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931393","url":null,"abstract":"This paper reports the spoof surface plasmons polaritons (SSPPs) based multi-band bandpass filter. An efficient back to back transition from Quasi TEM mode of microstrip line to SSPP mode has been designed by etching a gradient corrugated structure on the metal strip; while keeping ground plane unaltered. SSPP wave is found to be highly confined within the teeth part of corrugation. Complementary split ring resonator has been etched in the ground plane to obtained multiband bandpass filter response. Excellent conversion from QTEM mode to SSPP mode has been observed.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"35 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":"115803156","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}
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