具有高频率选择性和增益平坦性的宽带圆极化滤波天线设计

IF 0.7 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Progress in Electromagnetics Research Letters Pub Date : 2023-01-01 DOI:10.2528/pierl23082901
Zimen Zhao, Hongmei Liu, Junhao Ren, Zhongbao Wang, Shao-Jun Fang
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Design of Wideband Circularly Polarized Filtering Antenna with High Frequency Selectivity and Gain Flatness
—In the paper, a wideband circularly polarized (CP) filtering antenna is proposed, which is composed of four bent Vivaldi elements excited with sequential-rotated feeding technique. Since the Vivaldi element has the advantages of high gain and wide bandwidth, it is selected as the radiation element. On this basis, two cross slots are etched on the Vivaldi antenna to increase the gain at lower frequency band, and bent method which has less effect on the overall performance is applied for lowing the profile of the antenna. To realize filtering characteristic, the quadrature four-feed network consisting of one modified miniaturized filtering rat race coupler (FRC) and two compact wideband quadrature couplers is utilized as the sequential-rotated feeding for the Vivaldi elements.
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来源期刊
Progress in Electromagnetics Research Letters
Progress in Electromagnetics Research Letters ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
2.20
自引率
11.10%
发文量
84
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