Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420352
K. Xu, Wenxun Li, Yanhui Liu
In this paper, a novel dual-frequency substrate integrated waveguide (SIW) cavity-backed slot antenna using two high-order modes is presented. Determined by the locations and types of the feeding and radiator, the high-order hybrid mode (superposition of TM310 and TM130) and another higher-order mode TM320 in SIW cavity are excited by an inductive window for dual-band application in K-band. The simulated results of the proposed antenna show that the 10-dB impedance bandwidths at resonant frequencies of 21.2 and 26.1 GHz are 400 MHz and 800 MHz, and the realized gains at boresight direction are around 10.7 and 11.9 dBi, respectively. Including its high gain, the designed dual-frequency antenna has the advantages of high front-to-back ratio and low cross polarization level.
{"title":"Dual-Frequency SIW cavity-backed slot antenna using two high-order modes","authors":"K. Xu, Wenxun Li, Yanhui Liu","doi":"10.1109/APCAP.2017.8420352","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420352","url":null,"abstract":"In this paper, a novel dual-frequency substrate integrated waveguide (SIW) cavity-backed slot antenna using two high-order modes is presented. Determined by the locations and types of the feeding and radiator, the high-order hybrid mode (superposition of TM310 and TM130) and another higher-order mode TM320 in SIW cavity are excited by an inductive window for dual-band application in K-band. The simulated results of the proposed antenna show that the 10-dB impedance bandwidths at resonant frequencies of 21.2 and 26.1 GHz are 400 MHz and 800 MHz, and the realized gains at boresight direction are around 10.7 and 11.9 dBi, respectively. Including its high gain, the designed dual-frequency antenna has the advantages of high front-to-back ratio and low cross polarization level.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125813600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420366
Yan-ning Yuan, Jiao-Jie Feng, Xiao-li Xi
This paper presents a wearable antenna design for the body area network application. The presented antenna consists of two parts: a microstrip patch antenna with the flexible material substrate as the radiation source and a compact artificial magnetic conductor (AMC) with new hexagon unit as the reflector. The simulation and measurement results show that on the one hand, the new AMC structure is a better candidate for the miniaturization design concept compared with the standard hexagon structure; on the other hand, the introduction of such AMC reflector not only increases the isolation between antenna system and human body, which can be quantified by the specific absorption rate (SAR), but also improves the forward gain of the patch antenna.
{"title":"Design of wearable antenna with compact artificial magnetic conductor reflecting plate","authors":"Yan-ning Yuan, Jiao-Jie Feng, Xiao-li Xi","doi":"10.1109/APCAP.2017.8420366","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420366","url":null,"abstract":"This paper presents a wearable antenna design for the body area network application. The presented antenna consists of two parts: a microstrip patch antenna with the flexible material substrate as the radiation source and a compact artificial magnetic conductor (AMC) with new hexagon unit as the reflector. The simulation and measurement results show that on the one hand, the new AMC structure is a better candidate for the miniaturization design concept compared with the standard hexagon structure; on the other hand, the introduction of such AMC reflector not only increases the isolation between antenna system and human body, which can be quantified by the specific absorption rate (SAR), but also improves the forward gain of the patch antenna.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125866351","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}
In this paper, we investigate the propagation characteristics of millimeter wave (mmWave) channel for directional antenna patterns in a indoor office for line-of-sight (LOS) conditions, based on extensive measurements conducted in a indoor office environment using a stationary linear track at the receiver to move the horn antenna, with a carrier frequency of 28GHz. Propagation characteristics of mmWave at 28 GHz are simulated and analyzed using the method of shooting and bounding ray tracing/image (SBR/IM). The ray tracing predictions agree fairly well with the measurement results, so the correctness of the SBR/IM method has been validated. Moreover, some propagation characteristic parameters are discussed for measured results and simulated results, such as values of the path loss, the distribution of the received power. Meanwhile, path loss exponent is deduced from the measurement investigations. The analysis of the above results from this measurement and simulation may be utilized for the design of the future fifth generation (5G) mmWave indoor cellular systems.
{"title":"Millimeter-Wave Propagation Measurement and Simulation in a Indoor Office Environment at 28 GHz","authors":"Shuangde Li, Yuanjian Liu, Leke Lin, Mengxue Wang, Zhong Sheng, Dingming Sun","doi":"10.1109/APCAP.2017.8420530","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420530","url":null,"abstract":"In this paper, we investigate the propagation characteristics of millimeter wave (mmWave) channel for directional antenna patterns in a indoor office for line-of-sight (LOS) conditions, based on extensive measurements conducted in a indoor office environment using a stationary linear track at the receiver to move the horn antenna, with a carrier frequency of 28GHz. Propagation characteristics of mmWave at 28 GHz are simulated and analyzed using the method of shooting and bounding ray tracing/image (SBR/IM). The ray tracing predictions agree fairly well with the measurement results, so the correctness of the SBR/IM method has been validated. Moreover, some propagation characteristic parameters are discussed for measured results and simulated results, such as values of the path loss, the distribution of the received power. Meanwhile, path loss exponent is deduced from the measurement investigations. The analysis of the above results from this measurement and simulation may be utilized for the design of the future fifth generation (5G) mmWave indoor cellular systems.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126045754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420458
Bo-Yuan Wang, Xiang-Yu Wang, Linsheng Wu, J. Mao
A balanced-to-balanced Gysel power divider is proposed with bandpass filtering response and unequal power division. Design equations are provided for the proposed component, according to the power division ratio and filter specifications. Large design flexibility, small circuit size and low insertion loss can be achieved simultaneously. A microstrip prototype is developed at f0=2 GHz with a second-order Chebyshev bandpass response. The bandwidth is 8% and the power division ratio of differential-mode outputs is 1:3. The phase difference is smaller than 5°. The suppression of in-band common-mode transmission and mode conversion is over 25 dB. Our idea is validated by the good agreement obtained between the measured and simulated results.
{"title":"A balanced-to-balanced filtering gysel power divider with unequal power division","authors":"Bo-Yuan Wang, Xiang-Yu Wang, Linsheng Wu, J. Mao","doi":"10.1109/APCAP.2017.8420458","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420458","url":null,"abstract":"A balanced-to-balanced Gysel power divider is proposed with bandpass filtering response and unequal power division. Design equations are provided for the proposed component, according to the power division ratio and filter specifications. Large design flexibility, small circuit size and low insertion loss can be achieved simultaneously. A microstrip prototype is developed at f0=2 GHz with a second-order Chebyshev bandpass response. The bandwidth is 8% and the power division ratio of differential-mode outputs is 1:3. The phase difference is smaller than 5°. The suppression of in-band common-mode transmission and mode conversion is over 25 dB. Our idea is validated by the good agreement obtained between the measured and simulated results.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129395339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420493
Y. J. Cheng, Y. C. Zhong
This paper overviews several designs about wideband quasi-non-diffraction beams generated by different phase shift surface (PSS) antennas developed in University of Electronic Science and Technology of China (UESTC). Three kinds of non-diffraction beam Ka-band PSS antennas with wideband, large depth-of-field and controllable propagating direction are introduced respectively.
{"title":"Wideband quasi-non-diffraction beam with large depth-of-field and controllable propagating angle","authors":"Y. J. Cheng, Y. C. Zhong","doi":"10.1109/APCAP.2017.8420493","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420493","url":null,"abstract":"This paper overviews several designs about wideband quasi-non-diffraction beams generated by different phase shift surface (PSS) antennas developed in University of Electronic Science and Technology of China (UESTC). Three kinds of non-diffraction beam Ka-band PSS antennas with wideband, large depth-of-field and controllable propagating direction are introduced respectively.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128212852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420360
Jian Liu
A chipless UWB-RFID tag is proposed in the paper that, depending on the geometric topology, renders signature in the spectrum of structural mode, and signature in the time domain of antenna mode. The tag is configured by a planar patch antenna, on which a U slot with a resistive load located in the middle site is etched to issue a band-gap in the spectrum of the structural mode. In addition, a microstrip line is connected, the end of which is equipped with a resistive load that, along with the length of the feed line, determine the status quo of the antenna mode in time domain. A threshold application is simulated by setting the resistive load in three states: the open, the short and the impedance matching. Results show this tag can be portrayed by joint spectral and temporal signatures that are distinct enough to fulfill identification in contactless way; Moreover the joint spectral and temporal signature can be extended to interrogate more complicated circumstances or the cases that are required by increased information capacity.
{"title":"Chipless UWB-RFID tag with spectral and temporal joint signatures","authors":"Jian Liu","doi":"10.1109/APCAP.2017.8420360","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420360","url":null,"abstract":"A chipless UWB-RFID tag is proposed in the paper that, depending on the geometric topology, renders signature in the spectrum of structural mode, and signature in the time domain of antenna mode. The tag is configured by a planar patch antenna, on which a U slot with a resistive load located in the middle site is etched to issue a band-gap in the spectrum of the structural mode. In addition, a microstrip line is connected, the end of which is equipped with a resistive load that, along with the length of the feed line, determine the status quo of the antenna mode in time domain. A threshold application is simulated by setting the resistive load in three states: the open, the short and the impedance matching. Results show this tag can be portrayed by joint spectral and temporal signatures that are distinct enough to fulfill identification in contactless way; Moreover the joint spectral and temporal signature can be extended to interrogate more complicated circumstances or the cases that are required by increased information capacity.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127074226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420780
J. Ma, Debin Hou
The millimeter-wave drive amplifier is an important component in the transceiver system. It is to provide input signal to drive the power amplifier for sufficient power output. In this paper, the driver amplifier at Ka-band is designed in 0.15um pHEMT GaAs process. The measured results are in agreement with the simulation. Based on the amplifier chip and wire bonding technique, the amplifier module is also developed and applied to the W-band receiver system.
{"title":"Design and implementation of A Ka-Band MMIC driver amplifier and module","authors":"J. Ma, Debin Hou","doi":"10.1109/APCAP.2017.8420780","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420780","url":null,"abstract":"The millimeter-wave drive amplifier is an important component in the transceiver system. It is to provide input signal to drive the power amplifier for sufficient power output. In this paper, the driver amplifier at Ka-band is designed in 0.15um pHEMT GaAs process. The measured results are in agreement with the simulation. Based on the amplifier chip and wire bonding technique, the amplifier module is also developed and applied to the W-band receiver system.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130014209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420723
Qianshu Xiao, Shiwen Yang, Hongfei Bao, Yikai Chen, S. Qu
A wideband dual-polarized conformal phased array based on tightly coupled dipoles with 3:1 bandwidth is presented. Previous studies on wideband phased arrays are mainly focused on tightly coupled dipoles planar arrays. This paper reports a dual-polarized, tightly-coupled dipole 2D conformal phased array, which has much more preponderance in application. The conformal array employs a wide-angle impedance matching layer (WAIM). The simulated finite conformal array demonstrates broadside VSWR < 2 across a 3:1 bandwidth, and VSWR < 2.3 for a 3:1 bandwidth while scanning up to 60°, with cross polarization levels < −20dB, in all planes. The array height, including the WAIM, is 0.14 wavelength above the ground plane, at the lowest operational frequency, and 0.41 wavelength at the highest frequency.
{"title":"A wideband dual-polarized conformal phased array based on tightly coupled dipoles","authors":"Qianshu Xiao, Shiwen Yang, Hongfei Bao, Yikai Chen, S. Qu","doi":"10.1109/APCAP.2017.8420723","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420723","url":null,"abstract":"A wideband dual-polarized conformal phased array based on tightly coupled dipoles with 3:1 bandwidth is presented. Previous studies on wideband phased arrays are mainly focused on tightly coupled dipoles planar arrays. This paper reports a dual-polarized, tightly-coupled dipole 2D conformal phased array, which has much more preponderance in application. The conformal array employs a wide-angle impedance matching layer (WAIM). The simulated finite conformal array demonstrates broadside VSWR < 2 across a 3:1 bandwidth, and VSWR < 2.3 for a 3:1 bandwidth while scanning up to 60°, with cross polarization levels < −20dB, in all planes. The array height, including the WAIM, is 0.14 wavelength above the ground plane, at the lowest operational frequency, and 0.41 wavelength at the highest frequency.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128886962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420321
Hang Yin, Min Wang, Jianpeng Wang, Wen Wu
A compact wideband filtering quasi-Yagi antenna is presented. To realize differential driven on the dipole, exciting signals are transited from the microstrip to the coplanar stripline by utilizing the truncated ground plane and the shorting via hole. Next, for the implementation of the filtering response, a compact resonator is introduced. To validate our proposal, a quasi-Yagi antenna operating at 6.0 GHz with a bandwidth of 26.7% is designed, fabricated, and measured. Results indicate that the proposed antenna operates from 5.5 to 7.1 GHz, and the measured average gain in the passband is about 4.0 dBi at end-fire direction with high selectivity in the passband edge. In addition, the range of suppression on harmonics is more than the second harmonic.
{"title":"A compact wideband filtering quasi-yagi antenna","authors":"Hang Yin, Min Wang, Jianpeng Wang, Wen Wu","doi":"10.1109/APCAP.2017.8420321","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420321","url":null,"abstract":"A compact wideband filtering quasi-Yagi antenna is presented. To realize differential driven on the dipole, exciting signals are transited from the microstrip to the coplanar stripline by utilizing the truncated ground plane and the shorting via hole. Next, for the implementation of the filtering response, a compact resonator is introduced. To validate our proposal, a quasi-Yagi antenna operating at 6.0 GHz with a bandwidth of 26.7% is designed, fabricated, and measured. Results indicate that the proposed antenna operates from 5.5 to 7.1 GHz, and the measured average gain in the passband is about 4.0 dBi at end-fire direction with high selectivity in the passband edge. In addition, the range of suppression on harmonics is more than the second harmonic.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128899850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-01DOI: 10.1109/APCAP.2017.8420589
Qinggong Chang, Ziqi Jiang, Dahai Hu, Liuge Du
When the units of a phased array antenna (PAA) are fed at the same time, the mutual coupling between units will impact the PAA's performance. So the active impedance test is significant to PAA. The existing indirect testing methods are time consuming and labor-intensive. A novel technique for direct PAA active impedance test under different feed states is proposed in this paper. The proposed technique is verified with a built system and the experimental results are also presented to demonstrate its performances.
{"title":"A novel system for active impedance test of phased array antenna","authors":"Qinggong Chang, Ziqi Jiang, Dahai Hu, Liuge Du","doi":"10.1109/APCAP.2017.8420589","DOIUrl":"https://doi.org/10.1109/APCAP.2017.8420589","url":null,"abstract":"When the units of a phased array antenna (PAA) are fed at the same time, the mutual coupling between units will impact the PAA's performance. So the active impedance test is significant to PAA. The existing indirect testing methods are time consuming and labor-intensive. A novel technique for direct PAA active impedance test under different feed states is proposed in this paper. The proposed technique is verified with a built system and the experimental results are also presented to demonstrate its performances.","PeriodicalId":367467,"journal":{"name":"2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131065706","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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