Surface Acoustic Wave Microwave Oscillator and Frequency Synthesizer.
Abstract
The objective of the program is the development of Surface Acoustic Wave (SAW) oscillator and synthesizer technology. The two year effort is planned as follows: Task I - Development of SAW devices for oscillator applications at microwave (L-band) frequencies. Emphasis to be placed on achieving wideband tuning capabilities, improved oscillator stability performance and reduced power requirements. Task II - Investigate UHF surface acoustic wave devices which can best impact on synthesizer performance parameters such as: switching speed, minimum frequency step size, total achievable bandwidth, short, medium and long term stability as well as maximum suppression of spurious mode level. Concurrently promising new synthesizer designs will be studied on the basis of these designs to arrive at target specification in a package providing a significant reduction is size, weight and power consumption. During the second six months of the program, the microwave oscillator design has been completed. A breadboard version of the circuit has been fabricated and is being evaluated. The oscillator design consists of a bank of four selectable SAW delay lines with passbands around 560 MHz, a varactor tuned quadrature hybrid phase shifter, a three stage loop amplifier, a transistor frequency tripler, and a power amplifier. An injection locked oscillator has also been developed to use in place of the power amplifier. Work on the frequency synthesizer was also initiated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA082351
Entities
People
- D. J. Dodson Jr
- M. Y. Huang