HOT-ELECTRON MILLIMETER DEVICES.
Quarterly rept. no. 3, 1 Dec 65-28 Feb 66,
GENERAL TELEPHONE AND ELECTRONICS LABS INC BAYSIDE NY BAYSIDE LAB
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The application is studied of known hot-carrier effects in semiconductors to the development of new and improved microwave devices. The devices being investigated include modulators, mixers, harmonic generators, and detectors. The measurement capability of modulation indices was extended by use of a spectrum analyzer capable of operation in the vicinity of 70 GHz. The feasibility of obtaining modulation bandwidths in excess of 5000 MHz with hot-carrier units was demonstrated. Experimental data on the conversion loss of cooled InSb hot-carrier mixers and room-temperature silicon Schottky barrier mixers are compared as a function of 70-GHz local-oscillator drive level. The design of a room-temperature hot-carrier mixer is described., and experimental results are presented for mixers fabricated with 2 ohm.cm p-type germanium. Conversion efficiencies of the harmonic generator operating as a frequency tripler were approximately -48 dB, with the 70-GHz pulsed input having a peak power of 50 watts. At higher input powers the conversion efficiency decreases somewhat.
- Electrical and Electronic Equipment