Pub Date : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246039
Song Zha, Mingtuan Lin, Hanbing Liu, Zhaofeng Wu, Ji-bin Liu, Bowen Deng
A novel direction of arrival (DOA) estimation method based on a single programmable metasurface sensor and compressive sensing is proposed in this paper. In comparison with metasuface-based beam-scanning method, metasurface- based compressive sensing for DOA estimation has superior performance with smaller sampling length. A proof-of-concept experiment is made to verify the feasibility of programmable metasurface for DOA estimation. The programmable metasurface can achieve estimation with only a single channel and small sampling length, which is cost-effective and can be widely used in the internet of thing (IoT) application.
{"title":"DOA Estimation with Programmable Metasurface","authors":"Song Zha, Mingtuan Lin, Hanbing Liu, Zhaofeng Wu, Ji-bin Liu, Bowen Deng","doi":"10.1109/APCAP50217.2020.9246039","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246039","url":null,"abstract":"A novel direction of arrival (DOA) estimation method based on a single programmable metasurface sensor and compressive sensing is proposed in this paper. In comparison with metasuface-based beam-scanning method, metasurface- based compressive sensing for DOA estimation has superior performance with smaller sampling length. A proof-of-concept experiment is made to verify the feasibility of programmable metasurface for DOA estimation. The programmable metasurface can achieve estimation with only a single channel and small sampling length, which is cost-effective and can be widely used in the internet of thing (IoT) application.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127367985","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246020
Ziyang Zheng, Yueping Zhang, Junfa Mao
This paper introduces the testing method of a millimeter-wave far-field antenna measurement setup in our lab. First, a brief introduction on how the signal travels and transforms in the devices is given. Then, the testing processes and the method to measure antennas’ impedance and gain pattern is revealed. Finally, a testing example is shown to validate the measurement capability. This paper is convinced to enrich the information about our setup to the research community and provide useful reference in millimeter-wave antenna measurements.
{"title":"Testing Method of a Millimeter-Wave/THz Far-Field Antenna Measurement Setup","authors":"Ziyang Zheng, Yueping Zhang, Junfa Mao","doi":"10.1109/APCAP50217.2020.9246020","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246020","url":null,"abstract":"This paper introduces the testing method of a millimeter-wave far-field antenna measurement setup in our lab. First, a brief introduction on how the signal travels and transforms in the devices is given. Then, the testing processes and the method to measure antennas’ impedance and gain pattern is revealed. Finally, a testing example is shown to validate the measurement capability. This paper is convinced to enrich the information about our setup to the research community and provide useful reference in millimeter-wave antenna measurements.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125764501","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246097
Zhi-qiang Liu, Huanyu Song, Zehong Yan
In this paper, a bridge duplexer is designed, which can integrate and output signals with similar frequencies. It consists of two band-pass filters, two 3dB power couplers and a part of transition structure. The whole system works in Ku frequency band and the two input ports respectively input narrowband signals and broadband signals. The overall simulation results show that the return loss of narrow-band and wide-band signal input ports is greater than 17dB and 20dB respectively, the insertion loss is less than 0.2dB and 0.3dB respectively, and the isolation between the two input ports is higher than 25dB, which indicates that the design can well meet the actual engineering requirements.
{"title":"Design of Bridge Diplexer Based on Dual-mode Generalized Filter","authors":"Zhi-qiang Liu, Huanyu Song, Zehong Yan","doi":"10.1109/APCAP50217.2020.9246097","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246097","url":null,"abstract":"In this paper, a bridge duplexer is designed, which can integrate and output signals with similar frequencies. It consists of two band-pass filters, two 3dB power couplers and a part of transition structure. The whole system works in Ku frequency band and the two input ports respectively input narrowband signals and broadband signals. The overall simulation results show that the return loss of narrow-band and wide-band signal input ports is greater than 17dB and 20dB respectively, the insertion loss is less than 0.2dB and 0.3dB respectively, and the isolation between the two input ports is higher than 25dB, which indicates that the design can well meet the actual engineering requirements.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123742008","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246023
Qingling Yang, S. Gao, Lehu Wen, Xiaofei Ren, D. Kong, Wei E. I. Liu
A slot-coupled patch antenna working at 28 GHz with dual ±45° slant polarization is reported. The patch antenna is excited by a cavity backed slot. To improve the impedance matching, the patch antenna is truncated at each corner. The antenna shows the advantages of high polarization discrimination (XPD), low profile and simple configuration. To validate its performance, an antenna array composed of 2×8 of the proposed antenna elements is designed, prototyped, and tested. The experiment shows that the antenna array has an impedance bandwidth of 26.2-30GHz and the maximum gain is 16.7 dBi.
{"title":"±45° Linearly Polarized Slot-Coupled Patch Antenna for Millimeter-Wave Applications","authors":"Qingling Yang, S. Gao, Lehu Wen, Xiaofei Ren, D. Kong, Wei E. I. Liu","doi":"10.1109/APCAP50217.2020.9246023","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246023","url":null,"abstract":"A slot-coupled patch antenna working at 28 GHz with dual ±45° slant polarization is reported. The patch antenna is excited by a cavity backed slot. To improve the impedance matching, the patch antenna is truncated at each corner. The antenna shows the advantages of high polarization discrimination (XPD), low profile and simple configuration. To validate its performance, an antenna array composed of 2×8 of the proposed antenna elements is designed, prototyped, and tested. The experiment shows that the antenna array has an impedance bandwidth of 26.2-30GHz and the maximum gain is 16.7 dBi.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124769324","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246127
Chuanyun Wang, Zhiwen Han, Haiwen Liu, Xiqiang Zhang, Lina Wang
In this paper, a novel dual-band filtering dielectric resonator antenna (FDRA) is proposed. It is fed by a microstripcoupled slot from bottom, with an open stub of the microstrip feedline elaborately designed to provide a radiation null, and two pairs of the "┥" shaped slotlines are introduced on the coupling slot to generate two radiation nulls at band edges and obtain filtering characteristic. In this design, two resonant modes are excited to provide two operating bands at 3.5 and 5.06 GHz, respectively. Lower operating band is caused by dielectric resonator (DR), while higher operating band is achieved by the slotlines. Consequently, a dual-band FDRA without involving extra filtering circuits is obtained and simulated. The simulated results show that the peak gains are 5.5 and 6.75 dBi, and the out-of-band suppression level is about 20 dB.
{"title":"A Dual-band Filtering Dielectric Resonator Antenna","authors":"Chuanyun Wang, Zhiwen Han, Haiwen Liu, Xiqiang Zhang, Lina Wang","doi":"10.1109/APCAP50217.2020.9246127","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246127","url":null,"abstract":"In this paper, a novel dual-band filtering dielectric resonator antenna (FDRA) is proposed. It is fed by a microstripcoupled slot from bottom, with an open stub of the microstrip feedline elaborately designed to provide a radiation null, and two pairs of the \"┥\" shaped slotlines are introduced on the coupling slot to generate two radiation nulls at band edges and obtain filtering characteristic. In this design, two resonant modes are excited to provide two operating bands at 3.5 and 5.06 GHz, respectively. Lower operating band is caused by dielectric resonator (DR), while higher operating band is achieved by the slotlines. Consequently, a dual-band FDRA without involving extra filtering circuits is obtained and simulated. The simulated results show that the peak gains are 5.5 and 6.75 dBi, and the out-of-band suppression level is about 20 dB.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124796401","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246042
Jun Xiao, Tongyu Ding, Q. Ye
This paper presents a high-gain multilayer patch antenna array at X-band. The radiating patches are fed by L-probes. The simulated impedance bandwidth of the 4 × 4 antenna array is 23.3% ranging from 6.82 to 8.62 GHz. The simulated peak gain of the array is 19.65 dBi.
{"title":"High-Gain Multilayer Patch Antenna Array","authors":"Jun Xiao, Tongyu Ding, Q. Ye","doi":"10.1109/APCAP50217.2020.9246042","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246042","url":null,"abstract":"This paper presents a high-gain multilayer patch antenna array at X-band. The radiating patches are fed by L-probes. The simulated impedance bandwidth of the 4 × 4 antenna array is 23.3% ranging from 6.82 to 8.62 GHz. The simulated peak gain of the array is 19.65 dBi.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124959579","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246028
Xiaohang Li, Nianzu Zhang, Gang Xu
This paper proposes a matched filter architecture for MIMO radar from different angles. Firstly, the traditional matched filter architecture of MIMO radar echo signal is analyzed, and some shortcomings are pointed out. Secondly, the traditional matched filter architecture is improved from the perspective of spectrum shift. Finally, the experiments verify the feasibility of the proposed architecture and give the results of floating-point and fixed-point simulations which show little difference. Further analysis shows that the novel architecture can make the communication system more concise.
{"title":"Research and Implementation of Novel Matched Filter Architecture for MIMO Radar","authors":"Xiaohang Li, Nianzu Zhang, Gang Xu","doi":"10.1109/APCAP50217.2020.9246028","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246028","url":null,"abstract":"This paper proposes a matched filter architecture for MIMO radar from different angles. Firstly, the traditional matched filter architecture of MIMO radar echo signal is analyzed, and some shortcomings are pointed out. Secondly, the traditional matched filter architecture is improved from the perspective of spectrum shift. Finally, the experiments verify the feasibility of the proposed architecture and give the results of floating-point and fixed-point simulations which show little difference. Further analysis shows that the novel architecture can make the communication system more concise.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131506323","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246158
Y. Ban, Jie Liu
In this paper, the design of an S-band power amplifier (PA) with a high output power based on a GaN HEMT has been demonstrated. The proposed PA is composed of a packaged GaN device, an input / output radio frequency (RF) signal matching network, as well as a DC bias network. The optimal output load is optimized after a trade-off between achieving a high output power and a high power added efficiency (PAE). As the transistor is not unconditionally stable, stabilization has been taken into account in the DC bias network design in such a way that the RF performance is minimally affected. Finally, the layout is finely tuned in order to optimize the interconnection parasitics and to minimize the performance degradation. Characterized with a standard measurement setup with two SMA connectors, the measured result shows that the proposed PA achieves a power gain of 11 dB with an output power of around 35 dBm.
{"title":"A compact power amplifier based on a 5 W GaN HEMT in S-band application","authors":"Y. Ban, Jie Liu","doi":"10.1109/APCAP50217.2020.9246158","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246158","url":null,"abstract":"In this paper, the design of an S-band power amplifier (PA) with a high output power based on a GaN HEMT has been demonstrated. The proposed PA is composed of a packaged GaN device, an input / output radio frequency (RF) signal matching network, as well as a DC bias network. The optimal output load is optimized after a trade-off between achieving a high output power and a high power added efficiency (PAE). As the transistor is not unconditionally stable, stabilization has been taken into account in the DC bias network design in such a way that the RF performance is minimally affected. Finally, the layout is finely tuned in order to optimize the interconnection parasitics and to minimize the performance degradation. Characterized with a standard measurement setup with two SMA connectors, the measured result shows that the proposed PA achieves a power gain of 11 dB with an output power of around 35 dBm.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125508073","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246157
Chao Xu, Xiongying Liu, Zhongxin Li
A compact rectifier-antenna (i.e. rectenna), integrating a compact patch antenna with a rectifier, is designed for the far-field wireless power transfer of implantable medical devices. The proposed rectenna operates in the Industrial, Scientific and Medical (ISM) band of 902–928 MHz. The sizes of the antenna are miniaturized to π × 42 × 1.27 mm3 by etching a meandering structure on the radiation patch. Through exciting two adjacent resonant frequencies, the simulated impedance bandwidth is extended to 36.6% (0.78–1.13 GHz) with |S11| below −10 dB. Furthermore, on the back of the antenna, a voltage doubled rectifier circuit is designed and analyzed. The simulated RF-to-DC conversion efficiency can be up to 58.3% at −5 dBm.
{"title":"Miniaturized Implantable Rectenna for Far-Field Wireless Power Transfer","authors":"Chao Xu, Xiongying Liu, Zhongxin Li","doi":"10.1109/APCAP50217.2020.9246157","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246157","url":null,"abstract":"A compact rectifier-antenna (i.e. rectenna), integrating a compact patch antenna with a rectifier, is designed for the far-field wireless power transfer of implantable medical devices. The proposed rectenna operates in the Industrial, Scientific and Medical (ISM) band of 902–928 MHz. The sizes of the antenna are miniaturized to π × 42 × 1.27 mm3 by etching a meandering structure on the radiation patch. Through exciting two adjacent resonant frequencies, the simulated impedance bandwidth is extended to 36.6% (0.78–1.13 GHz) with |S11| below −10 dB. Furthermore, on the back of the antenna, a voltage doubled rectifier circuit is designed and analyzed. The simulated RF-to-DC conversion efficiency can be up to 58.3% at −5 dBm.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122285444","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246079
Yuying Li, F. Xu
This letter presents a dual-layered filter with dual band using mixed dual-mode and single-mode resonators. An example of a substrate integrated folded waveguide (SIFW) with two channel and each channel of two single-mode (TE101 and TE201) is demonstrated using substrate integrated waveguide technology. A type of microstrip line to CPW coplanar transition as passive input feed structure is inserted between source and load. Compared to conventional waveguides, the structure of folded waveguides roughly shrinks half. Furthermore, the fractional bandwidths (FBWs) of the two channel filters can be allocated flexibly based on the FBW design graph. A prototype centered at 11.82GHz and 13.51GHz with respective FBWs of 5.3% and 5.5% is designed for demonstration.
{"title":"Multilayer Dual-band Filter Based on Substrate Integrated Waveguide (SIW)","authors":"Yuying Li, F. Xu","doi":"10.1109/APCAP50217.2020.9246079","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246079","url":null,"abstract":"This letter presents a dual-layered filter with dual band using mixed dual-mode and single-mode resonators. An example of a substrate integrated folded waveguide (SIFW) with two channel and each channel of two single-mode (TE101 and TE201) is demonstrated using substrate integrated waveguide technology. A type of microstrip line to CPW coplanar transition as passive input feed structure is inserted between source and load. Compared to conventional waveguides, the structure of folded waveguides roughly shrinks half. Furthermore, the fractional bandwidths (FBWs) of the two channel filters can be allocated flexibly based on the FBW design graph. A prototype centered at 11.82GHz and 13.51GHz with respective FBWs of 5.3% and 5.5% is designed for demonstration.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121107698","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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