UHF Film Integrated Circuits.
Abstract
The purpose of this project is to investigate lumped-element versus microstrip circuitry for use (1) at microwave frequencies (up to X-band), (2) with high-power active devices and (3) as transforming networks between radically different impedances. In addition, other types of integrated transmission lines for use at higher frequency and the fabrication of integrated circuits on GaAs are being investigated. The attenuation of microstrip transmission lines constructed of CrAu on GaAs has been measured and shows reasonable losses. Further work on GaAs techniques is discussed. The Q of inductors to 12 GHz has been investigated further. Spiral inductors show distributed effects above 8 GHz and their Q falls off. Single-turn inductors are found to remain lumped and their Q does not fall off as rapidly. A new phase-reflection measurement technique has been developed for the network analyzer which facilitates the measurements. A 6-watt, 2.25-GHz lumped-element amplifier was fabricated. Improved mounting of the transistor chip made this performance possible. The directivity of a 3-dB coplanar waveguide directional coupler has been improved by a metallic cover, and a nonresonant ferrimagnetic isolator has been constructed in symmetrical trough waveguide.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0870128
Entities
People
- Frank H. Norman
- Louis S. Napoli
- Martin Caulton
- Robert E. Debrecht
- Stanley P. Knight
Organizations
- Sarnoff Corporation