S. Shigemitsu, Mei Fukaya, S. Makino, Shota Takino
{"title":"Design of Optimized Multiple-Frequency-Shaped Beam Reflectarray Antenna","authors":"S. Shigemitsu, Mei Fukaya, S. Makino, Shota Takino","doi":"10.23919/ISAP47258.2021.9614472","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614472","url":null,"abstract":"Previous research involved only optimizing the center frequency when designing a reflectarray antenna that radiates a shaped beam. In this study, we designed a shaped beam reflectarray antenna by optimizing the center frequency and multiple frequencies, in addition to using the conventional design method.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129590406","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}
{"title":"A Substrate Integrated Waveguide Planar Slot Array Antenna with Low Sidelobe Level","authors":"Yun-Ting Tsai, Yu-Chen Hsu, H. Chu, T. Ma","doi":"10.23919/ISAP47258.2021.9614461","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614461","url":null,"abstract":"A substrate integrated waveguide (SIW) slot array antenna with low sidelobe level (SLL) is proposed in this paper. The slot array contains a new method to make use of the internal mutual coupling between slots to achieve the desired current distribution with low SLL in the H-plane. In addition, to realize Dolph-Chebyshev distribution in the E-plane, a power divider is presented, including the design of SIWs with different widths, SIWs with corners bent in arcs, and T-junctions with two posts for the sake of achieving phase compensation, wide bandwidth, and high power-dividing ratio at the same time. By adding two extra posts to control the imaginary part of the impedance, a transition from conductor-backed coplanar waveguide (CBCPW) to SIW with tuning flexibility is applied to feed the antenna. The 64-element SIW slot array antenna is operated at 24 GHz with the simulation result of SLL around - 18.1 dB.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129713318","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}
Yi-Jie Ye, Hui-Yu Chueh, Wei-Chan Chang, Wen-Jiao Liao
{"title":"A Series-Fed Patch Antenna Array for Biomedical Radar Applications","authors":"Yi-Jie Ye, Hui-Yu Chueh, Wei-Chan Chang, Wen-Jiao Liao","doi":"10.23919/ISAP47258.2021.9614542","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614542","url":null,"abstract":"In this paper, a series-fed patch antenna array with substrate-integrated waveguide (SIW) power dividing circuit is proposed to work in the 60 to 64 GHz band. It is aimed to support frequency-modulated continuous waveform (FMCW) radar operation for biomedical applications. Due to the required radar mounting scheme, the array antenna is configured with a 30°-tilted beam in the E-plane. The 4-by-5 array adopts a non-uniform patch width configuration so that to control the amount of radiation from individual patches. The proposed antenna yields a broad matching band up to 9 GHz and the peak realized gain is 14.4 dBi, which shall meet the biomedical radar need.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129286015","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}
C. Sim, Tzu-Wei Huang, Yu-Chieh Hsuan, Shun-Yu Tsai, Chuanqing Weng
{"title":"A Circularly Polarized UHF RFID Tag Antenna Design","authors":"C. Sim, Tzu-Wei Huang, Yu-Chieh Hsuan, Shun-Yu Tsai, Chuanqing Weng","doi":"10.23919/ISAP47258.2021.9614466","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614466","url":null,"abstract":"This paper proposes a circularly polarized (CP) radio frequency identification (RFID) tag antenna design that operates in the ultra-high frequency (UHF) band. The proposed tag antenna has a size of 100×100 mm3, and it is composed of two main structures, namely, an eccentric circular slot patch and a coupled arc-shaped feeding strip. The RFID tag chip is embedded near one end of the feeding strip and it is also shorted to the main ground through a via hole. The size of the circular slot can aid in achieving good impedance matching between the tag antenna and the chip. The CP characteristic of the tag antenna is excited due to the feeding and slot position, as well as the gap slot loaded on the radiation surface of the patch. The 10-dB impedance bandwidth of the proposed tag antenna is 1.62% (914-929 MHz), and its corresponding 3-dB axial ratio (AR) bandwidth is 0.97% (919-928 MHz).","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128037435","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}
{"title":"A Dual Circularly Polarized Array Antenna for Ka-Band Satellite Communications","authors":"Qiannan Ren, A. Zaman, Jian Yang","doi":"10.23919/ISAP47258.2021.9614491","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614491","url":null,"abstract":"This work presents a dual circularly polarized 8-by-8 array antenna using inbuilt polarizers for satellite communications. The design consists of five metal layers, including two feeding layers for the dual circular polarizations and a polarizer layer that utilizes a pair of sector cavities as phase delay elements for each sub-array. Two corporate feeding networks using folded E-plane and H-plane T-junctions are proposed to excite the radiating elements. Simulated results of the array antenna have shown that the axial ratios are less than 1 dB from 29 to 31 GHz for both polarizations. The realized gains for both polarizations are larger than 25 dBi at center frequency.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128707418","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}
V. Vassilev, A. Vilenskiy, H. Chou, M. Ivashina, H. Zirath
{"title":"A 55-105 GHz PIN Diode SPDT Switch","authors":"V. Vassilev, A. Vilenskiy, H. Chou, M. Ivashina, H. Zirath","doi":"10.23919/ISAP47258.2021.9614359","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614359","url":null,"abstract":"A single pole double throw switch (SPDT) realised with PIN diodes and using a commercial process is presented. The switch is characterized between 55-112 GHz and achieves minimum insertion loss of 2.8 dB at 85.2 GHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128884395","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}
N. Supreeyatitikul, P. Akkaraekthalin, C. Phongcharoenpanich
{"title":"Single-Layer Wideband CP CPW-Fed Antenna based on Staircase-Shape Metasurface","authors":"N. Supreeyatitikul, P. Akkaraekthalin, C. Phongcharoenpanich","doi":"10.23919/ISAP47258.2021.9614580","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614580","url":null,"abstract":"This research proposed a single-layer wideband circularly polarized (CP) coplanar waveguide (CPW)-fed antenna based on staircase-shaped metasurface (MTS) for C-band applications. The proposed CPW-fed antenna was a single-layer, which consisted of 4 × 4 periodic staircase-shaped MTS on the upper layer, a CPW feed, and a rectangular slot ground plane on the lower layer. A linearly polarized (LP) wave was generated by a CPW with a slot ground plane and converted to a circularly polarized wave by staircase-shaped MTS elements. The dimensions of the proposed antenna were 0.54λ × 0.54λ × 0.04λ at the lowest operating frequency. The simulated results of impedance bandwidth (IBW) and axial ratio (ARBW) at the center frequency of 5.2 GHz were 67.3% (4.1 – 7.6 GHz) and 15.9% (4.8 – 5.7 GHz), respectively. The maximum gain was 5.6 dBi at 5.3 GHz. The radiation patterns of the proposed CPW-fed antenna based on staircase-shaped MTS were right-hand circular polarization (RHCP) characteristic radiation at the operating frequency.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122820318","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}
M. F. Ismail, M. Rahim, N. Samsuri, N. Murad, A. Pramudita
{"title":"High Isolation MIMO Antenna using Electromagnetic Band Gap - EBG Structure","authors":"M. F. Ismail, M. Rahim, N. Samsuri, N. Murad, A. Pramudita","doi":"10.23919/ISAP47258.2021.9614595","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614595","url":null,"abstract":"This paper presents the use of electromagnetic bandgap (EBG) structure in the MIMO application for mutual coupling reduction. The proposed antenna consists of a group of EBG structure between two antennas at different orientation of the antenna polarization. As a results, about 30 dB reduction of mutual coupling is obtained from the simulation process. This antenna is suitable to be used for MIMO and 5G application","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121163466","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}
{"title":"A C-band 4096-QAM OFDM Data Link for 5G Private Network Applications","authors":"Tian-Wei Huang, Jui-Cheng Hung, Chuan-Li Chung","doi":"10.23919/ISAP47258.2021.9614444","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614444","url":null,"abstract":"The C-band private wireless network is a major candidate for future high reliability and low latency 5G applications. For data security and user privacy, many enterprise users will consider the licensed private network isolated from the public internet. The 1024QAM/4096QAM can boost the data rate within limited spectrum resources.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122296971","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}
M. Khalid, Abdul Manan, S. Naqvi, H. Zahra, Chia-Chan Chang, S. M. Abbas
{"title":"5G Millimeter-Wave Eight-Port MIMO Antenna","authors":"M. Khalid, Abdul Manan, S. Naqvi, H. Zahra, Chia-Chan Chang, S. M. Abbas","doi":"10.23919/ISAP47258.2021.9614457","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614457","url":null,"abstract":"This work presents an eight-port multiple-input multiple-output (MIMO) antenna for fifth generation (5G) millimeter wave (mm-Wave) applications. Each MIMO antenna consists of an inverted T-shaped array with a corporate feed network. The proposed structure is resonating for the 23.5–27.45 GHz band, thus covering the 26 GHz mm-Wave band. Additionally, the peak gain obtained for the MIMO elements is 11.5 dBi. The presented structure provides acceptable values for Envelope Correlation Coefficient (ECC), and Diversity Gain (DG). The simple structure, high gain, wide bandwidth, and good MIMO performance makes this design suitable for 5G mm-Wave devices.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127087852","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}