A KU-BAND FILTERING DUPLEX ANTENNA FOR SATELLITE COMMUNICATIONS

IF 0.7 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Progress in Electromagnetics Research M Pub Date : 2019-09-14 DOI:10.2528/pierm19071506

Mostafa G. Aly, C. Mao, S. Gao, Yi Wang

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引用次数: 3

Abstract

In this paper, a dual-polarisation shared-aperture duplex antenna is presented for satellite communications at the standard microwave Ku-band, based on the integrated filtering-antenna concept and co-design approach. The design relies on the use of resonators coupled to the radiating dual-band dual-polarisation antenna. The resonant patch antenna forms one pole of each channel filter, resulting in a third-order filter in the Rx channel and a second-order filter in the Tx channel. The Rx and Tx ports of the antenna take in horizontal and vertical linear polarisations, respectively. The integrated duplexer helps to increase the isolation between the ports and the selectivity of each channel. The integration between the filter and the antenna is achieved by electromagnetic coupling, without the need of external matching circuits. Thus it attains a compact footprint. The operation frequencies of the demonstrated duplex antenna are from 11 to 12.5 GHz (12.8%) for the downlink to the Rx port, and from 13 to 14.4 GHz (10.2%) for the uplink at the Tx port. High port-to-port isolation of over 40 dB is realized to reduce channel interference. Flat in-band average gains are achieved to be 7.8 and 8.3 dBi, for the lowand high-bands, respectively.

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用于卫星通信的ku波段滤波双工天线

本文基于集成滤波天线的概念和协同设计方法，提出了一种用于标准微波Ku波段卫星通信的双极化共享孔径双工天线。该设计依赖于耦合到辐射双频带双极化天线的谐振器的使用。谐振贴片天线形成每个信道滤波器的一个极点，从而在Rx信道中产生三阶滤波器，在Tx信道中产生二阶滤波器。天线的Rx和Tx端口分别接受水平和垂直线性极化。集成双工器有助于提高端口之间的隔离度和每个通道的选择性。滤波器和天线之间的集成是通过电磁耦合实现的，不需要外部匹配电路。因此，它实现了紧凑的占地面积。演示的双工天线的工作频率为11至12.5 GHz（12.8%），下行链路至Rx端口，上行链路至Tx端口，工作频率为13至14.4 GHz（10.2%）。实现了超过40 dB的高端口间隔离，以减少信道干扰。对于低频带和高频带，平坦的带内平均增益分别达到7.8和8.3dBi。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Electromagnetics Research M Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

2.50

自引率

10.00%

发文量

114

期刊介绍： Progress In Electromagnetics Research (PIER) M publishes peer-reviewed original and comprehensive articles on all aspects of electromagnetic theory and applications. Especially, PIER M publishes papers on method of electromagnetics, and other topics on electromagnetic theory. It is an open access, on-line journal in 2008, and freely accessible to all readers via the Internet. Manuscripts submitted to PIER M must not have been submitted simultaneously to other journals.