A modified branch line coupler with compact size and ultra wide harmonics suppression band

IF 0.6 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electromagnetics Pub Date : 2022-07-04 DOI:10.1080/02726343.2022.2118422

Samireh Alizadeh, S. Roshani, S. Roshani

引用次数: 1

Abstract

ABSTRACT In microstrip branch line coupler (BLC) design, there are significant parameters, including size reduction, insertion loss, and harmonic suppression, which affect the performances of the device. In this paper, a modified BLC with compact size, wide harmonics suppression band, and low insertion loss in operating band is designed. In the proposed design, four types of resonators are used together to create proposed BLC with superior performance. The proposed BLC works at 900 MHz with only 0.1 dB insertion loss at pass band. The proposed BLC provides wide harmonics rejection band from 1.8 to 8.1 GHz, which suppresses 2nd to 9th unwanted harmonics. The conventional coupler occupies 0.25 λ × 0.25 λ, which has undesirable size. But, the proposed BLC occupies compact area of only 21.95 mm × 30.55 mm (0.12 λ × 0.09 λ), which shows more than 81% size reduction.

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一种改进型小型超宽谐波抑制带支线耦合器

摘要在微带分支线耦合器（BLC）的设计中，有许多重要的参数，包括尺寸减小、插入损耗和谐波抑制，这些都会影响器件的性能。本文设计了一种尺寸紧凑、谐波抑制频带宽、工作频带插入损耗低的改进型BLC。在所提出的设计中，将四种类型的谐振器一起使用，以创建具有优异性能的所提出的BLC。所提出的BLC工作在900MHz，通带处只有0.1dB的插入损耗。所提出的BLC提供了1.8至8.1GHz的宽谐波抑制带，抑制了2至9次不想要的谐波。传统耦合器占用0.25λ×0.25λ，尺寸不理想。但是，所提出的BLC仅占据21.95 mm×30.55 mm（0.12λ×0.09λ）的紧凑面积，这表明尺寸减小了81%以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electromagnetics 工程技术-工程：电子与电气

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

6 months

期刊介绍： Publishing eight times per year, Electromagnetics offers refereed papers that span the entire broad field of electromagnetics and serves as an exceptional reference source of permanent archival value. Included in this wide ranging scope of materials are developments in electromagnetic theory, high frequency techniques, antennas and randomes, arrays, numerical techniques, scattering and diffraction, materials, and printed circuits. The journal also serves as a forum for deliberations on innovations in the field. Additionally, special issues give more in-depth coverage to topics of immediate importance. All submitted manuscripts are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. Submissions can be made via email or postal mail.

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