Accession Number : AD0870128

Title :   UHF Film Integrated Circuits.

Descriptive Note : Quarterly progress rept. no. 7, 1 Dec 69-28 Feb 70,

Corporate Author : RCA LABS PRINCETON NJ

Personal Author(s) : Caulton, Martin ; DeBrecht, Robert E. ; Napoli, Louis S. ; Norman, Frank H. ; Knight, Stanley P.

Report Date : MAY 1970

Pagination or Media Count : 28

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.

Descriptors :   (*INTEGRATED CIRCUITS, FILMS), TRANSMISSION LINES, GALLIUM ARSENIDES, POWER AMPLIFIERS, WAVEGUIDES, CHROMIUM, GOLD, ELECTRICAL IMPEDANCE, FERRITES, ETCHING, ULTRAHIGH FREQUENCY, X BAND, SUBSTRATES, CHEMICAL REACTIONS, INDUCTANCE, CAPACITORS, STRIP TRANSMISSION LINES, STANDING WAVE RATIOS, RESONATORS, MICROWAVE FREQUENCY.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE