A low phase noise voltage controlled SAW oscillator with surface transverse wave resonator for SONET application

摘要

A surface transverse wave (STW) resonator based oscillator was developed in response to SONET OC-48 application. A high-Q STW resonator was designed and fabricated in the work. The oscillator's white phase noise floor is -170 dBc/Hz for carrier-offset frequency greater than 1 MHz. The oscillator's phase noise level of -67 dBc/Hz at 100 Hz carrier offset. The electronic frequency tuning range exceeds /spl plusmn/200 ppm.