MINIATURIZED RAT-RACE HYBRID INCORPORATING SIX LUMPED-ELEMENT COMPONENTS

摘要

This letter presents the simulation and measurement results for a miniaturized rat-race hybrid using six lumped-element components. The hybrid was implemented on an FR4 substrate using chip inductors and chip capacitors. For the 530- to 620-MHz frequency range, the rat-race hybrid exhibited power splits of -3.4+/-0.7 dB, return losses of >18 dB, an isolation between output ports of >24 dB, and errors in the desired relative phase difference between output ports of <58. (C) 2016 Wiley Periodicals, Inc.