Design of Quad-Band Rat-Race Coupler for GSM/WiMAX/WLAN/Satellite Applications
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Date
2021-04
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Společnost pro radioelektronické inženýrství
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Abstract
In this communication, a novel quad-band rat-race coupler (RRC) is developed for GSM/WiMAX/WLAN/Satellite applications. A conventional RRC is converted to exhibit quad-band operation by using a quad-band microstrip-line (QBML). The proposed QBML is constructed by two coupled-lines, one series transmission-line and two short-ended stubs. The ABCD matrix method is applied to develop the design formulas. Based on these formulas, a quad-band RRC operating at 1.8 GHz, 3.5 GHz, 5.4 GHz, and 7.1 GHz is designed and verified through fabrication and measurement. The measurement and full-wave simulation responses are very much consistent as expected.
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Radioengineering. 2021 vol. 30, č. 1, s. 135-141. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2021/21_01_0135_0141.pdf
https://www.radioeng.cz/fulltexts/2021/21_01_0135_0141.pdf
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Peer-reviewed
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en