2020 IEEE International RF and Microwave Conference (RFM)最新文献_第7页

Microstrip Antenna Array with Defected Ground Structure and Copper Tracks for Bandwidth Enhancement 带缺陷接地结构和铜轨道的微带天线阵列用于带宽增强

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344781

K. Ahmad, M. Aziz, N. Abdullah

引用次数: 3

Characterization of Liquid Sample Using Complementary Split Ring Resonator Sensor 利用互补裂环谐振器传感器表征液体样品

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344759

M. F. Sapuri, N. Zakaria, N. E. Abd Rashid, K. K. Mohd Shariff, Z. I. Khan, S. A. E. Ab Rahim

引用次数: 2

Angular Response Control in Sub-THz Phased Array Antenna Using Dual Graphene Layers 基于双石墨烯层的亚太赫兹相控阵天线角响应控制

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344773

M. Mubarak, S. Hara, I. Watanabe, A. Kasamatsu

{"title":"Angular Response Control in Sub-THz Phased Array Antenna Using Dual Graphene Layers","authors":"M. Mubarak, S. Hara, I. Watanabe, A. Kasamatsu","doi":"10.1109/RFM50841.2020.9344773","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344773","url":null,"abstract":"This paper presents a novel low-profile planar antenna structure for reconfigurable angular response at sub-THz. The angular response is controlled with the aid of dual graphene layers incorporated with a phased array antenna. The antenna array is employing two half-wavelength dipole elements coupled symmetrically to the load through a co-planar strip-line (CPS). The graphene sheets are placed underneath the CPS and employed as a tunable inductive reactance to modulate the boundaries of the CPS at their locations. Beam scanning is introduced through independently modulating the chemical potential of each sheet by applying two adequate DC biasing voltages. Through HFSS simulations, the proposed model has showed versatile operation providing angular response control up to ±22° at the D-band. The structure shows a radiation efficiency of about 73% with realized gain peak of 2.18 dB at 150 GHz with zero applied bias on graphene. Along with the simplicity of the structure, the reconfigurable operation is presented via a narrow tuning range of chemical potential, therefore, promoting for viable implementation through the common available micro-fabrication techniques.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126015815","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

Quad channel wide band frequency conversion with integrated LO for high IF Bandwidth 四通道宽带频率转换与集成的LO高中频带宽

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344750

Madiwalesh M Pattar, G. Anand, Rohit Lahiri

{"title":"Quad channel wide band frequency conversion with integrated LO for high IF Bandwidth","authors":"Madiwalesh M Pattar, G. Anand, Rohit Lahiri","doi":"10.1109/RFM50841.2020.9344750","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344750","url":null,"abstract":"Quad channel wideband frequency conversion unit converts wide band RF (Radio frequency) input band to Intermediate frequency (IF) band, with built in Local Oscillator (LO) signals. Down conversion architecture proposed here is for Electronic Warfare (EW) applications. Input RF signal is first separated into three bands based on frequency as Sub RF Band 1 (L Band), Sub RF Band 2 (C Band) & Sub RF Band 3 (S Band). Wideband RF diplexer separates sub RF Band 2 & 3. Sub RF Band 1 is processed directly. Sub RF Band 2 & 3 are down converted to IF Bands. Four such identical channels of processing/ down conversion are implemented. LO signals in C band are built in and are generated using Phase Locked loops (PLL). Super heterodyne down conversion architecture is employed here. Sub RF bands processing, LO generation & distribution are all implemented on composite dielectric multilayer printed circuit boards. The proposed architecture provides instantaneous interleaved IF processing bandwidth (BW) of 4000 MHz, Typical Gain of 7 dB, Typical Noise Figure (NF) of 12 dB, Harmonics & Intermodulation products performance of −50 dBc, LO & Image rejection of −50 dBc.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"1180 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120932792","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

Radio Propagation Modelling of Antique Shophouses in Malaysia 马来西亚古董店屋的无线电传播模型

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344747

Yujia Zhang, Soo Yong Lim

引用次数: 0

Radiation Pattern of Array Antenna with the Dual-Layer Butler Matrix 双层巴特勒矩阵阵列天线的辐射方向图

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344751

N. M. Jizat, Y. Yamada, Z. Yusoff

{"title":"Radiation Pattern of Array Antenna with the Dual-Layer Butler Matrix","authors":"N. M. Jizat, Y. Yamada, Z. Yusoff","doi":"10.1109/RFM50841.2020.9344751","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344751","url":null,"abstract":"In order to fulfill the demands for the high data rates of the 5G mobile system at the millimeter wave (mm-wave) frequency, multi beam array antennas are needed at the base station. The multi beam array antenna includes the technology of the Butler Matrix which use the amplitude and the phase for beamforming. In addition, this technology is cost effective, and easily installed at the base station. Previously, dual-layer Butler Matrix was designed to achieve the crossover circuit. In this configuration, to connect between the upper and the lower layer lines, techniques such as slot coupled, substrate integrated waveguide and coplanar waveguide structure are proposed. However, most of the structures experienced the high insertion loss and the parasitic coupling. In this paper, to address the aforementioned limitation, a via-hole structure is proposed into the Butler Matrix design. By optimum design of the substrate thickness, through hole and the connection pin sizes, the low loss line is developed. The dual-layer Butler Matrix design is then combined with the patch antenna array with 0.5 λ spacing. The minimum transmission coefficient obtained is −6.05 dB with the low loss of ± 0.05 dB. Both reflection coefficients (Sii) and isolation (Sij) simulations are less than −15 dB while the transmission coefficient (Sji) value is 6 ±0.05 dB. Four beams are generated accordingly towards +10°, +32°, −36°, and −14° when the Port 1 till Port 4 is fed with the corresponding peak gains of 9.4 dB, 10.1 dB, 9.5 dB and 10.5 dB, respectively.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124642665","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

Frequency and Pattern Reconfigurable Antenna using Electromagnetic Band Gap Structure 基于电磁带隙结构的频率和方向图可重构天线

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344795

M. Rahim, M. Ismail, H. Majid, M. Hamid, N. Samsuri, N. Murad

引用次数: 0

Analysis and Measurement of IM3 Anomalies in Single- and Double-Band Low-Noise Amplifiers 单双波段低噪声放大器中IM3异常的分析与测量

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344764

J. Dobes, J. Míchal, V. Navrátil, Z. Kolka

引用次数: 0