Microwave Filters and Delay Lines
Abstract
The significance of this research and development to the Air Force derives from the need for small, lightweight solid state integrated circuit devices suitable for signal processing applications at Microwave frequencies. The work covered by this report was directed specifically at such devices operating at X band (8.0 to 12.4 GHz). The performance improvement was accomplished by improving the quality of epitaxial YIG films, increasing the knowledge of magnetostatic wave propagation in dielectric layered structures, and utilizing high energy product samarium cobalt magnets. During the period covered by this contract several devices were built and evaluated. These were: 1. A nondispersive delay line at 8.425 GHz with a delay of 124 nsec, an insertion loss of 20 dB, and a bandwidth of 45 MHz; 2. A dispersive delay line operating at 9.1 GHz with a 300 MHz linear dispersion of 175 nsec of differential delay. This device compressed a linear chirp by a factor of 30:1 and weighted the adjacent sides lobes to -20 dB; 3. A two tap delay line having a nondispersive delay of 50 nsec and 80 nsec. The success of these devices in terms of size and operating frequency represents a considerable increase in the state of the art. For the first time, the rf signal designer has the opportunity to perform signal processing at radar signal frequencies, with devices which are compatible with Gunn and IMPATT solid state signal sources.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1973
- Accession Number
- AD0911513
Entities
People
- D. M. Heinz
- L. Needham
- W. L. Bongianni