Design Of A Branch-Line Microstrip Coupler Using Spirals And Step Impedance Cells For WIMAX Applications

Hosseini, Sayed M. and Rezaei, Abbas (2020) Design Of A Branch-Line Microstrip Coupler Using Spirals And Step Impedance Cells For WIMAX Applications. ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 8 (1). pp. 1-4. ISSN 2410-9355

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Abstract

branch-line microstrip coupler is designed and fabricated in this paper. The proposed coupler operates at 3 GHz, which is suitable for WiMAX applications. The designed coupler has a high performance, that is, a low phase difference of 0.49°, low insertion loss, good coupling factor, and good isolation better than −30 dB. Another advantage of the designed coupler is its novel geometrical structure based on integrating the semi-circular and step impedance cells. The design process is based on introducing and analyzing an equivalent LC model to improve impedance matching and reduce losses. To verify the design process, the designed coupler is fabricated, where a good agreement between the simulation result and measurement is achieved.

Item Type:	Article
Uncontrolled Keywords:	Branch line; Coupler; Insertion loss; Microstrip; Phase shift
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	ARO-The Scientific Journal of Koya University > VOL 8, NO 1 (2020)
Depositing User:	Aro Journal Office
Date Deposited:	09 May 2020 09:10
Last Modified:	09 May 2020 09:10
URI:	http://eprints.koyauniversity.org/id/eprint/211

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