Vol. 94

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2020-11-18

Design and Construction of a Nonuniform Wiggly Lines Bidirectional Coupler in Combination with the Reflected Power Canceller Method

By Pouya Mehrjouseresht, Mahshad Rezvani, Majid Mohamadi Demneh, and Reza Motahari
Progress In Electromagnetics Research Letters, Vol. 94, 157-163, 2020
doi:10.2528/PIERL20081703

Abstract

This paper presents a bidirectional coupler which is designed by combining nonuniform wiggly lines and the reflected power canceller (RPC) method. The combination not only brings about a high directivity but also makes a wideband structure with a compact size. Although, in the RPC method, an idle port is used to produce a reflected signal in order to achieve a high directivity, there are not any idle ports in the proposed coupler. The coupler was built on an FR4 substrate. The measurement results show that this structure is suitable to monitor forward and reflected signals in high power applications. The fabricated coupler has the directivity of more than 22 dB and the coupling flatness of ±0.12 dB in the forward and backward signals in a wide frequency range of 140 MHz-190 MHz.

Citation


Pouya Mehrjouseresht, Mahshad Rezvani, Majid Mohamadi Demneh, and Reza Motahari, "Design and Construction of a Nonuniform Wiggly Lines Bidirectional Coupler in Combination with the Reflected Power Canceller Method," Progress In Electromagnetics Research Letters, Vol. 94, 157-163, 2020.
doi:10.2528/PIERL20081703
http://www.jpier.org/PIERL/pier.php?paper=20081703

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