SAW stabilized 1680 MHz microwave oscillator
Abstract
A SAW stabilized oscillator circuit has recently been designed and breadboarded to provide 300 ppm frequency stability over a -70 C to +70 C environment in the frequency band from 1660 to 1700 MHz. The circuit transmits 0.5 watt output power, provides both AM and FM capability, and is frequency selectable to + or - 50 kHz. The circuit consists of two functional modules; a SAW oscillator module consisting of a loop amplifier, a tuned phase shifter and a four-channel SAW delay line which operates at 1/3 the output frequency, and a frequency multiplier/power amplifier module. The prototype development was implemented using low-cost circuit board techniques conducive to future large volume production. Design and performance details are provided.
- Publication:
-
34th Annual Frequency Control Symposium
- Pub Date:
- 1980
- Bibcode:
- 1980afc..symp..221D
- Keywords:
-
- Frequency Stability;
- Microwave Oscillators;
- Network Synthesis;
- Power Amplifiers;
- Radiosondes;
- Surface Acoustic Wave Devices;
- Acoustic Delay Lines;
- Phase Shift;
- Power Efficiency;
- Electronics and Electrical Engineering