IMAGE REJECTION MIXER, QUADRATURE MIXER AND RECEIVER

摘要

PROBLEM TO BE SOLVED: To remove an image signal without mounting an in-phase distributor for LO wave distribution. SOLUTION: An image rejection mixer is disclosed which is equipped with: a 90°hybrid 3 for distributing an RF signal and an LO wave into signals of phases different at 90°; a first higher harmonic mixer 4 for mixing one-side distributed RF signal and LO wave to output an IF signal; a phase shifting line 5 for changing phases of other-side distributed RF signal and LO wave; and a second higher harmonic wave mixer 6 for mixing the other-side phase-changed RF signal and LO wave to output an IF signal, wherein a 90°hybrid 7 synthesizes the IF signal output from the first higher harmonic wave mixer 4 with the IF signal output from the second higher harmonic wave mixer 6. COPYRIGHT: (C)2009,JPO&INPIT