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2021 International Symposium on Antennas and Propagation (ISAP)最新文献

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Indoor Radio Wave Coverage by Phased Arrays of Antennas at Millimeter Wave Frequencies 毫米波频率下相控阵天线的室内无线电波覆盖
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614493
Chen-Yi Chang, H. Chou
{"title":"Indoor Radio Wave Coverage by Phased Arrays of Antennas at Millimeter Wave Frequencies","authors":"Chen-Yi Chang, H. Chou","doi":"10.23919/ISAP47258.2021.9614493","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614493","url":null,"abstract":"This paper presents the investigations of indoor radio coverage by ray-tracing techniques. Multi-beam radiation patterns are employed in the numerical simulations. The signal-to-noise ratio (SNR) and signal-to-interference-plus-noise ratio (SINR) are employed as the parameter to justify the effectiveness of radio coverage. It is seen that the directional beams may provide higher gains, but may not provide a good coverage. A hybrid implementation of omnidirectional and directional radiations may provide a better coverage in terms of communication quality for UE system.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"32 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":"115473542","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}
引用次数: 0
A High Gain Broadband Circularly Polarized Antenna with Sector Dipole 带扇形偶极子的高增益宽带圆极化天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614561
Fengshuo Zhang, Wei Li, Ying Suo
{"title":"A High Gain Broadband Circularly Polarized Antenna with Sector Dipole","authors":"Fengshuo Zhang, Wei Li, Ying Suo","doi":"10.23919/ISAP47258.2021.9614561","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614561","url":null,"abstract":"A sector dipole circularly polarized antenna is proposed in this paper. The antenna is fed by a semi-rigid coaxial line and the antenna structure is fed by multiple sections of microstrip line of unequal width and λg/4 length. The structure achieves four equal divisions of power and four 90° degrees of phase differences. For the array element, the conventional rectangular dipole is modified to a sector dipole, while the sector dipole is slotted for better matching. The improved sector dipole structure effectively extends the bandwidth of the antenna. The simulation results show that the impedance bandwidth of the antenna is 64.9% (1.55GHz-3.04GHz), the 3-dB axial ratio bandwidth is about 32.9% (1.70GHz-2.37GHz), the gain is 6.44dBic-7.52dBic, and the antenna is RHCP in the AR bandwidth. The proposed antenna is able to achieve high gain circular polarization in a wide frequency band.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"19 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":"127119571","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}
引用次数: 0
Automatic Over-The-Air Evaluation of a Large-Scale MIMO Antenna Using a Switch Circuit 基于开关电路的大规模MIMO天线的空中自动评估
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614614
Rio Kitamura, K. Honda
{"title":"Automatic Over-The-Air Evaluation of a Large-Scale MIMO Antenna Using a Switch Circuit","authors":"Rio Kitamura, K. Honda","doi":"10.23919/ISAP47258.2021.9614614","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614614","url":null,"abstract":"In this paper, we propose an automatic method to evaluate a large-scale MIMO antenna in fading emulator using a switch circuit to measure the channel response of the antenna elements. In the proposed daisy chain MIMO antenna, the channel responses of the subarrays are obtained numerically with a personal computer by combining two antenna elements. Then, over-the-air (OTA) evaluations of the 64 × 64 daisy-chain MIMO antenna were performed, and it was verified that high-speed communication could be achieved regardless of the direction of the incident wave, demonstrating the efficacy of the automatic OTA evaluation method of the large-scale MIMO antenna using a switch circuit.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"15 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":"125275330","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}
引用次数: 0
Design of Wideband Dielectric Resonator Antenna for D-Band Applications d波段宽带介质谐振器天线的设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614546
Teng Li, Karina Schneider, Alexander Haag, A. Visweswaran, Akanksha Bhutani, T. Zwick
{"title":"Design of Wideband Dielectric Resonator Antenna for D-Band Applications","authors":"Teng Li, Karina Schneider, Alexander Haag, A. Visweswaran, Akanksha Bhutani, T. Zwick","doi":"10.23919/ISAP47258.2021.9614546","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614546","url":null,"abstract":"In this paper, a wideband dielectric resonator antenna (DRA) is proposed for the D-band antenna-in-package (AiP) solution. A low-cost AiP solution based on the high density interconnect (HDI) printed circuit board (PCB) process is proposed for the first time for D-band applications. The radio-frequency (RF) chip is embedded in the multi-layer PCBs and packaged with flip-chip bonding. The RF signal is transferred from the chip to the top of the package by a vertical transition for antenna excitation. As an example, the DRA (0.5 mm Alumina cube) is designed with a single-ended microstrip-fed on the package top. The measured impedance matching bandwidth is 115-162 GHz with a peak gain of 5.5 dBi at 154 GHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"122 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":"126749653","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}
引用次数: 3
One Layer of Reflectarray Antenna Changing Beam Direction by Polarization 利用偏振改变波束方向的一层反射天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614638
Shota Takino, S. Makino, S. Shigemitsu, Yusuke Kaimori
{"title":"One Layer of Reflectarray Antenna Changing Beam Direction by Polarization","authors":"Shota Takino, S. Makino, S. Shigemitsu, Yusuke Kaimori","doi":"10.23919/ISAP47258.2021.9614638","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614638","url":null,"abstract":"Reflectarray antenna applies the reflection phase control function of a metal loaded frequency selective reflector to a reflector antenna, It is possible to control the reflection phases of vertical (V) and horizontal (H) polarization with a single reflectarray if the shape and arrangement of the elements are appropriately designed In this study, we investigate a high-precision reflectarray using three linear elements in a single-layer structure. The results of the analysis demonstrate that the mutual coupling between the H and V components is reduced, and the effect of manufacturing error is minimized. Consequently, it is inferred that the beam can be emitted in different directions for each polarization.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"33 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":"116572124","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}
引用次数: 0
FDTD Simulation of DC Plasma Antenna 直流等离子体天线的时域有限差分仿真
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614627
Shen Shou Max Chung, S. Tuan
{"title":"FDTD Simulation of DC Plasma Antenna","authors":"Shen Shou Max Chung, S. Tuan","doi":"10.23919/ISAP47258.2021.9614627","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614627","url":null,"abstract":"Plasma antenna relies on the conductivity of the plasma to convey microwave signals, however, designs vary between plasma antennas, and the best way to explore them is through simulation. In this article we simulate the properties of a 60 cm long DC plasma antenna containing in a 12 mm Pyrex glass tube using a commercial FDTD code. The Smith chart, coupling impedance, and the gain pattern are shown. We think DC plasma possess certain advantages over an AC generated plasma antenna like a more stable plasma column and easily adjustable plasma density.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"21 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":"122482999","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}
引用次数: 0
WiThRay: Versatile 3D Simulator for Intelligent Reflecting Surface-aided MmWave Systems withay:用于智能反射表面辅助毫米波系统的多功能3D模拟器
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614590
Hyuckjin Choi, Junil Choi
{"title":"WiThRay: Versatile 3D Simulator for Intelligent Reflecting Surface-aided MmWave Systems","authors":"Hyuckjin Choi, Junil Choi","doi":"10.23919/ISAP47258.2021.9614590","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614590","url":null,"abstract":"Millimeter-wave (mmWave) communication systems that provide wideband spectra are a key technology in 5G communication systems. Although the small coverage of mmWave communication systems can be extended by beamforming with a large number of antennas, the strong directivity of signals inherited in high-frequency bands makes the mmWave communication systems vulnerable to signal blockage. Intelligent reflecting surface (IRS), which is able to change channel propagation characteristics by using a large number of passive elements, will become essential to mitigate the signal blockage in mmWave channels. Most of previous works on the mmWave systems using IRS, however, relied on stochastic channel models and did not consider real-world geometric environments. This paper is to introduce WiThRay (Wireless three-dimensional ray-tracing), a versatile simulator that generates the mmWave channels for 3D rendered geometric environments, where multiple base stations and multiple IRSs can be configured, based on ray-tracing. WiThRay also models the IRS response based on electromagnetics. Using WiThRay, we demonstrate the advantage of the IRS-aided mmWave communication systems in complicated and realistic environments.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"26 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":"114592375","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}
引用次数: 5
Implementation of 8 Channels Phase Conjugation on FPGA for Microwave Power Transmission 微波功率传输中8通道相位共轭的FPGA实现
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614534
T. Yu, Joon-Hong Kim, S. Nam
{"title":"Implementation of 8 Channels Phase Conjugation on FPGA for Microwave Power Transmission","authors":"T. Yu, Joon-Hong Kim, S. Nam","doi":"10.23919/ISAP47258.2021.9614534","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614534","url":null,"abstract":"This paper presents a phase conjugation (PC) system for 8 channels microwave power transmission (MPT) application, operating at the frequency band 2.45 GHz, using a field programmable gate array (FPGA) and high-speed analog to digital converter (ADC) and digital to analog converter (DAC). PC algorithm is implemented using some digital logics on the FPGA and a small size buffer is used for data acquisition. In addition, in order to operate the MPT system at 2.45 GHz, an appropriate frequency planning of ADC and DAC is proposed. Typical type of patch antennas is used to verify the implemented system and from the measurement results, it works well as the MPT application.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"7 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":"117046517","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}
引用次数: 0
Dual Band Horn Antenna Using Frequency Selective Surface Superstrate 基于频率选择表面层的双波段喇叭天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614573
Muhammad Naeem Iqbal, M. Yusoff, M. Rahim, M. Hamid, Z. Johari
{"title":"Dual Band Horn Antenna Using Frequency Selective Surface Superstrate","authors":"Muhammad Naeem Iqbal, M. Yusoff, M. Rahim, M. Hamid, Z. Johari","doi":"10.23919/ISAP47258.2021.9614573","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614573","url":null,"abstract":"The demand for high gain, multi band and reconfigurable type compact antennas are required for modern communication systems. In this paper, a unit cell design using U-shape with sequential rotations is presented to obtain dual passband frequency response. The unit cell design shows dual passband characteristics for the frequency range of 8-9.96 GHz and 11.53-14 GHz. In the complete high gain antenna design, 3x5 frequency selective surface array with X-band Horn antenna is demonstrated. The proposed reconfigurable frequency design has produced dual band impedance matching and a high gain of 13.09dB at 9.5GHz and 13.12dB at 12GHz, respectively. Most suitable applications for proposed antenna include communication systems requiring frequency selective, multi band and high gain antennas.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"44 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":"128678069","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}
引用次数: 1
Design of ultra-wideband TEM horn antenna for life detection 生命探测用超宽带TEM喇叭天线设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614515
Ying Suo, Feixiang Qi, Wei Li
{"title":"Design of ultra-wideband TEM horn antenna for life detection","authors":"Ying Suo, Feixiang Qi, Wei Li","doi":"10.23919/ISAP47258.2021.9614515","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614515","url":null,"abstract":"A TEM horn antenna that can be used for ultra-wide spectrum life detection is designed. Through the circular arced horn arm, the end structure and the resistance composite load, and the feeding port add reflector, the antenna size is effectively reduced to half a meter. The simulation results show that the designed antenna has a voltage standing wave ratio less than 2 in the range of 0.175~4GHz. The bandwidth ratio is 22.86:1, and the gain is greater than 10dB above 1.5GHz. The designed antenna has no curved surface structure and is composed of straight planes. The structure is simple and easy to manufacture. It has the characteristics of ultra-wideband, high gain, and strong directional radiation.","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":"129457012","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}
引用次数: 0
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