2.4 GHz single balanced diode mixer fabricated on Al/sub 2/O/sub 3/ substrate

摘要

A passive balun using spiral inductors and inter-digital capacitors has been developed for a 2.4 GHz balanced diode mixer on Al/sub 2/O/sub 3/ substrates. Using this passive balun on the input port (RF port and LO port) of the mixer circuit and incorporating the Schottky diode, where the I-V model and small signal RF model have been established, a wideband single balanced diode mixer was designed, fabricated and measured.