Compact Ultra-Wideband Microstrip 3dB Branch-Line Coupler Using Coupled-Lines
Xiaoqing Wu, Lin‐Ping Shen
20222022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)12 citationsDOI
Abstract
In this paper, a compact wide band microstrip 3dB branch-line coupler (BLC) is presented for wider operation band and size reduction. The proposed BLC is composed of single coupled-lines, and cascaded two sections in structure, which gives the broad operation band, good impedance matching, and the excellent isolation. By comparing with conventional microstrip 3dB BLC, the proposed hybrid coupler has 52% size reduction at the frequency band of 1.5~3.0GHz. As well as it gives more than 4% operation bandwidth increased for reflection and isolation performance.
Topics & Concepts
MicrostripBandwidth (computing)Rat-race couplerWidebandHybrid couplerImpedance matchingFrequency bandElectrical impedanceOpticsC bandPower dividers and directional couplersMaterials scienceOptoelectronicsElectronic engineeringPhysicsElectrical engineeringComputer scienceTelecommunicationsEngineeringMicrowave Engineering and WaveguidesAntenna Design and AnalysisAdvanced Antenna and Metasurface Technologies