A wideband SAW resonator and its application to a VCO for mobileradio transceivers

摘要

A new wideband SAW resonator has been developed for SAW-VCOs usednin mobile radio communication transceivers. The resonator is based on anrepeated structure of pairs of electrically connected IDTs, whichnprovides a high Q and a wide frequency bandwidth. An experimentalnSAW-VCO module measuring 8×8 mm2 offers anfrequency-variation bandwidth of about 20 MHz, a C/N of 75 dB, and annoutput power of 3-4 dBm at 900 MHz, satisfying the specifications fornJapanese MCA and business-use radio transceivers