Design and fabrication of a novel compact low-loss microstrip diplexer for WCDMA and WiMAX applications

被引：11

作者：

Rezaei A. ^{[1
]}

Yahya S.I. ^{[2
,3
]}

Noori L. ^{[4
]}

Jamaluddin M.H. ^{[5
]}

机构：

[1] Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah

[2] Department of Software Engineering, Faculty of Engineering, Koya University, Koya, Kurdistan Region

[3] Department of Communication and Computer Engineering, Cihan University-Erbil, Kurdistan Region

[4] Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz

[5] Wireless Communication Centre, School of Electrical Engineering, Universiti Teknologi Malaysia, Johor

来源：

Journal of Microwaves, Optoelectronics and Electromagnetic Applications | 2019年 / 18卷 / 04期

关键词：

Compact; Coupled lines; Diplexer; Microstrip;

D O I：

10.1590/2179-10742019v18i41791

中图分类号：

学科分类号：

摘要：

In this paper, a novel miniaturized microstrip diplexer using two bandpass filters (BPFs) is designed and fabricated. The filters consist of stub loaded coupled lines. Additional stubs and T-shape feeding structures are added to miniaturize the size of the presented diplexer. With the adopted special structure, low insertion losses and compact size are obtained. The introduced diplexer operates at 2.12 GHz for WCDMA application and 3.94 GHz for WiMAX application. The obtained insertion losses are 0.25 dB at 2.12 GHz and 0.26 dB at 3.94 GHz. A design technique for analyzing the proposed resonator is introduced to tune the resonance frequencies and obtain a compact size. The size of the proposed diplexer is 23.4 × 16.9 mm2 (0.038 λ g 2). The measurement result of the fabricated diplexer validates the design technique and simulation results. © 2019 SBMO/SBMag.

引用

页码：482 / 491

页数：9

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