一种用于分频双工和GSM-4G应用的新型配置的宽阻带微带双工器

S. Yahya, A. Rezaei, L. Noori, M. Jamaluddin
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引用次数: 2

摘要

提出了一种基于新型几何结构的高性能微带双工器。所实现的双工器由耦合线和半圆形结构组成。它的工作频率为2.58 GHz和2.72 GHz,适用于GSM-4G和无线应用。双工通道彼此靠近,满足了频分双工(FDD)的应用需求。S21和S31的宽阻带抑制都提供高达15 GHz。尽管通道非常接近,但在直流至20 GHz范围内,两个通道(S32)之间的模拟和测量隔离度优于- 20 dB。该设计方法是基于提供一种理论方法来衰减谐波和调谐谐振频率。同时,在通带后产生多个传输零,提高了阻带性能。所提出的双工器为两个通带提供了锐利的过渡边缘。采用0.047λ2的紧凑尺寸获得了高性能。为了验证设计方法,制作并测量了所提出的双工器。仿真结果与实测结果吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Wide Stopband Microstrip Diplexer Using a Novel Configuration for Frequency Division Duplex and GSM-4G Applications
This paper presents a high performance microstrip diplexer based on a novel geometrical structure. The realized diplexer consists of coupled lines and semicircular structures. It operates at 2.58 GHz and 2.72 GHz, for GSM-4G and wireless applications. The diplexer channels are close to each other, which fulfill the frequency division duplex (FDD) application needs. The wide stopband rejections for both S21 and S31 are provided up to 15 GHz. Despite of quite close channels, the simulated and measured isolation between the two channels (S32) is better than −20 dB, from DC up to 20 GHz. The designing method is based on providing a theoretical approach to attenuate the harmonics and tuning the resonance frequency. Meanwhile, several transmission zeros are created after the passbands, which improve the stopband properties. The proposed diplexer provides sharp transition edges for both passbands. The high performance is obtained using a compact size of 0.047λ2. To verify the designing methodology, the proposed diplexer is fabricated and measured. Good agreement between simulation results and measurement results are observed.
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