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2015 Asia-Pacific Microwave Conference (APMC)最新文献

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Study on suppression of aperture-cavity resonance by nested square rings absorber 嵌套方环吸收器抑制孔腔共振的研究
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413117
Jiepei Shi, Juan Chen, W. Fu
{"title":"Study on suppression of aperture-cavity resonance by nested square rings absorber","authors":"Jiepei Shi, Juan Chen, W. Fu","doi":"10.1109/APMC.2015.7413117","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413117","url":null,"abstract":"This paper presents a new absorber to suppress the aperture-cavity resonance. The absorber consists of two nested metal square rings which can absorb high frequency and low frequency electromagnetic wave, respectively. The simulation results demonstrate that the shielding effectiveness of the cavity which is loaded with the absorber can be improved. At its first and second resonant frequencies, the shielding effectiveness can be increased by about 35dB and 16dB, respectively.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121918318","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
Technique to assess the compatibility of medical implants to the RF field in MRI 磁共振成像中评估医用植入物与射频场相容性的技术
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413084
S. McCabe, Jonathan B. Scott
{"title":"Technique to assess the compatibility of medical implants to the RF field in MRI","authors":"S. McCabe, Jonathan B. Scott","doi":"10.1109/APMC.2015.7413084","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413084","url":null,"abstract":"The standard technique for determining the compatibility of medical implants to the magnetic and RF fields present in Magnetic Resonance Imaging (MRI), requires access to an MRI machine. For implants comprising metals of mostly the non-ferrous kind, it is only the RF field of an MRI machine that is of concern. Implant electrodes can concentrate the RF field in the surrounding tissue and give rise to joule heating. The inherent design of Spinal Cord Stimulators (SCS) and Deep Brain Stimulators (DBS) makes these implants particularly susceptible to hazardous levels of RF heating. We propose a technique that offers a quick and indicative assessment of the compatibility of implant leads to the RF field in 3-Tesla MRI, without needing access to an MRI machine. A dipole antenna, driven by a power amplifier and Continuous Wave (CW), injects RF energy into a gelled saline phantom. The heating in the gel near a test implant electrode is monitored with a fiber optic thermometer. The results are calibrated against measurements made in a 3-Tesla MRI machine.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116753002","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
Generation of OAM radio waves using slot antenna array 使用狭缝天线阵列产生OAM无线电波
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413308
Dandan Liu, L. Gui, M. R. Akram
{"title":"Generation of OAM radio waves using slot antenna array","authors":"Dandan Liu, L. Gui, M. R. Akram","doi":"10.1109/APMC.2015.7413308","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413308","url":null,"abstract":"This paper discusses a novel and a practical method to generate radio beams carrying Orbital Angular Momentum (OAM) by using slot antenna array. Different modes of OAM waves can be produced by keeping a constant phase delay between adjacent feed elements. This slot antenna array is designed and simulated at 7.8 GHz by using full wave simulator. Moreover, the mutual coupling between elements will be discussed in this paper.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129551212","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: 6
Plane spiral orbital angular momentum electromagnetic wave 平面螺旋轨道角动量电磁波
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413418
Shilie Zheng, Zhuofan Zhang, Yu Pan, Xiaofeng Jin, H. Chi, Xianmin Zhang
{"title":"Plane spiral orbital angular momentum electromagnetic wave","authors":"Shilie Zheng, Zhuofan Zhang, Yu Pan, Xiaofeng Jin, H. Chi, Xianmin Zhang","doi":"10.1109/APMC.2015.7413418","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413418","url":null,"abstract":"A new form of the orbital angular momentum (OAM) carried electromagnetic wave termed as plane spiral OAM (PSOAM) electromagnetic wave is proposed for the first time in this paper. This electromagnetic wave possesses the fundamental characters of the OAM-carrying waves, i.e. a spiral phase distribution, yet propagates along the transverse direction. Hence the phase singularity of this wave is in the radiation source itself, which can avoid the wide \"dark zone\" derived problems in the long distance transmission. The PSOAM electromagnetic waves with different OAM modes can be easily multiplexed as no divergence exists. Owing to the unique wave beam characteristics, some potential applications in wireless communication and electromagnetic sensing are preliminarily discussed.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129579486","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: 15
Design of multilateral monopole planar antenna with rabbet structure for UWB applications 面向超宽带应用的多极单极平面天线的设计
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7412958
Cheng-Hsing Hsu, Chia-Hao Chang, Wan-Yu Hsieh, C. Tseng, Wen-Shiush Chen, Jenn-Sen Lin
{"title":"Design of multilateral monopole planar antenna with rabbet structure for UWB applications","authors":"Cheng-Hsing Hsu, Chia-Hao Chang, Wan-Yu Hsieh, C. Tseng, Wen-Shiush Chen, Jenn-Sen Lin","doi":"10.1109/APMC.2015.7412958","DOIUrl":"https://doi.org/10.1109/APMC.2015.7412958","url":null,"abstract":"A planar multilateral monopole antenna with rabbet structure for ultra-wideband (UWB) application is proposed and experimentally studied. By modified a rabbet structure on the multilateral patch, a UWB response has been is improved. The proposed antenna has wide impedance bandwidth from 2.4 GHz to more than 11 GHz with better than -10 dB return loss. The design is demonstrated assuming FR4 substrate with a thickness of 1.6 mm, and the size of the antenna is 40 mm×50 mm. Details of the proposed antenna design and simulation results for UWB operations are presented and discussed.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128376686","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: 2
Compact circularly polarized SIW cavity-backed antenna based on slot SRR 基于缝隙SRR的紧凑圆极化SIW空背天线
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413532
Jianquan Huang, Feng Qiu, Chunzhi Jiang, D. Lei, Zhenghua Tang, Min Yao, Q. Chu
{"title":"Compact circularly polarized SIW cavity-backed antenna based on slot SRR","authors":"Jianquan Huang, Feng Qiu, Chunzhi Jiang, D. Lei, Zhenghua Tang, Min Yao, Q. Chu","doi":"10.1109/APMC.2015.7413532","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413532","url":null,"abstract":"A circularly polarized (CP) substrate integrated waveguide (SIW) cavity-backed antenna based on slot split ring resonator is proposed. The circularly polarized wave is generated by a split ring-slot etched in the upper metal layer of SIW cavity resonator. A simple coaxial probe is employed to excite this slot split ring resonator and radiate left-handed circularly polarized (LHCP) wave. The proposed antenna retains the advantages of both conventional planar antennas and metallic cavity backed antennas, including compact sizes of 14×14 mm2, light weight, easy low cost fabrication and high gain, low cross polarized level. It is experimentally proved that an impedance bandwidth of 10.5% for the reflection coefficient less than -10 dB, the axial ratio (AR) bandwidth of 2.06% for AR less than 3 dB, and the LHCP gain 5.2 dBi has been obtained.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128489901","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
A compact and high isolation microstrip switchable diplexer 一个紧凑和高隔离微带可切换双工器
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7411713
Chi‐Feng Chen, Bo-Hao Tseng, Sheng-Fa Chang
{"title":"A compact and high isolation microstrip switchable diplexer","authors":"Chi‐Feng Chen, Bo-Hao Tseng, Sheng-Fa Chang","doi":"10.1109/APMC.2015.7411713","DOIUrl":"https://doi.org/10.1109/APMC.2015.7411713","url":null,"abstract":"A compact, high-selectivity, and high-isolation microstrip electronically switchable diplexer is proposed. The diplexer is formed by connecting two switchable dual-band filters to a single feed with multiple coupling paths. No extra matching network is required for this design, which results in a smaller circuit size. In addition, the p-i-n diodes are loaded at one end of the assembled resonators to allow the proposed diplexer to be switchable. For the demonstration, a third-order bandpass switchable diplexer with four operating states is designed and fabricated using microstrip technology. Each channel band can be switched on and off independently. The diplexer has a compact size of 0.27 by 0.16 Excellent isolation between channels of better than 55 dB is also achieved.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128498132","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
Study of the Input RF noise of a THz superconductor-insulator-superconductor receiver 太赫兹超导体-绝缘体-超导体接收机输入射频噪声的研究
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413035
M. Yao, Dong Liu, Jie Hu, Jing Li, S. Shi
{"title":"Study of the Input RF noise of a THz superconductor-insulator-superconductor receiver","authors":"M. Yao, Dong Liu, Jie Hu, Jing Li, S. Shi","doi":"10.1109/APMC.2015.7413035","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413035","url":null,"abstract":"The receiver noise temperature of THz superconductor-insulator-superconductor (SIS) receivers is composed of several contributions, in which the input RF noise is usually not negligible. In this paper, we investigate the input RF noise (Trf) of a waveguide superconducting niobium nitride (NbN) SIS receiver operating at 0.5THz. In particular, the input RF noise is measured for two respective cases of a small beam aperture surrounded by an aluminum plate and a blackbody, which is located just in front of the 0.5THz NbN SIS receiver. Detailed measurement results will be presented.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128588479","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
Synthesis of dual-band filters with an arbitrary load and asymmetric responses 具有任意负载和非对称响应的双带滤波器的合成
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413497
Xi Yu, Zhao-Xu Xu, Yi-Yao Hu, J. L. Li, Sheng Sun
{"title":"Synthesis of dual-band filters with an arbitrary load and asymmetric responses","authors":"Xi Yu, Zhao-Xu Xu, Yi-Yao Hu, J. L. Li, Sheng Sun","doi":"10.1109/APMC.2015.7413497","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413497","url":null,"abstract":"An analytical approach for the synthesis of an asymmetric dual-band bandpass filter with a frequency-invariant arbitrary load is proposed. Based on numerical approximation technique and exchange-Remez algorithm, one can design a symmetric or asymmetric frequency response beside two passband. Different equiripple characteristic and orders can be achieved in each passband. Under the definition of power wave, the objective filter response with an arbitrary load can be converted to the measurable response and its referenced impedance is unity at the terminal. Finally, a synthesis example is presented and validated by the circuit theory.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129064410","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
A compact 433 MHz antenna with enhanced performance by using multi-resonant meander line structure 一种紧凑的433 MHz天线，采用多谐振曲线结构，提高了天线的性能
2015 Asia-Pacific Microwave Conference (APMC) Pub Date : 2015-12-01 DOI: 10.1109/APMC.2015.7413052
Xiaoyi Wang, Yu Fu, Haowen Wang, Yunsong Gui, Guomin Yang
{"title":"A compact 433 MHz antenna with enhanced performance by using multi-resonant meander line structure","authors":"Xiaoyi Wang, Yu Fu, Haowen Wang, Yunsong Gui, Guomin Yang","doi":"10.1109/APMC.2015.7413052","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413052","url":null,"abstract":"In this paper, a miniaturized planar antenna with enhanced bandwidth is designed for the ISM 433 MHz applications. The antenna is realized by cascading two resonant structures with meander lines, thus introducing two different radiating branches to realize two neighboring resonant frequencies. The techniques of shorting pin and novel ground plane are adopted for bandwidth enhancement. Combined with these structures, a novel antenna with a total size of 23 mm × 49.5 mm for the ISM band application is developed and fabricated. Measured results show that the proposed antenna has good performance with the -10 dB impedance bandwidth is about 12.5 MHz and the maximum gain is about -2.8 dBi.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124627583","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: 8
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