An Area-efficient Microstrip Diplexer with a Novel Structure and Low Group Delay for Microwave Wireless Applications

Yahya, Salah I. and Rezaei, Abbas (2020) An Area-efficient Microstrip Diplexer with a Novel Structure and Low Group Delay for Microwave Wireless Applications. ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 8 (2). pp. 71-77. ISSN 2410-9355

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Abstract

In this work, a novel structure of a microstrip diplexer consisting of coupled patch cells is presented. It works at 2.5 GHz and 4.7 GHz for wireless applications. The proposed structure is well miniaturized with a compact area of 0.015 λg2, fabricated on 0.787 mm substrate height. It has two wide fractional bandwidths (FBWs) of 28% and 17.9% at the lower and upper channels, respectively. Another feature of the proposed design is the low group delays, which are better than 0.4 ns for both channels. Moreover, the designed diplexer can suppress the harmonics up to 10 GHz. Meanwhile, the insertion losses at both channels are low. The design method is based on proposing an approximated equivalent LC circuit of a novel basic resonator. The information about the resonator behavior is extracted from the even and odd modes analysis of the proposed equivalent LC circuit. Finally, our introduced diplexer is fabricated and measured to verify the simulation results, where the simulated and measured results are in good agreement.

Item Type:	Article
Uncontrolled Keywords:	Fractional bandiwdth, Group delay, Harmonics, Microstrip diplexer, Wireless applications
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science Q Science > QA Mathematics > QA76 Computer software
Divisions:	ARO-The Scientific Journal of Koya University > VOL 8, NO 2 (2020)
Depositing User:	Dr Salah Ismaeel Yahya
Date Deposited:	16 Aug 2021 21:23
Last Modified:	13 Sep 2021 19:35
URI:	http://eprints.koyauniversity.org/id/eprint/262

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