Accession Number : AD0616752

Title :   MICROWAVE DIODE RESEARCH.

Descriptive Note : Quarterly progress rept. no. 11, 10 Dec 64-9 Mar 65,

Corporate Author : BELL TELEPHONE LABS INC MURRAY HILL N J

Personal Author(s) : DeLoach,B. C. ; Johnston,R. L. ; Swenson,R. C.

Report Date : 20 JUN 1965

Pagination or Media Count : 30

Abstract : Measurement of the loss and reactance for characterizing microwave diodes is described in Chapter 1. Corrections are given for the tuning-stub transmission loss method, in which the basic scheme is to measure the loss introduced when the diode is series-tuned in shunt with a transmission line. The tuning stub has to be calibrated for both loss and reactance since the former is not a constant as has sometimes been assumed. The method has been used primarily at 1 Gc. In Chapter 2 are described preliminary measurements on an exploratory oscillator. Although not part of the contract, this work is reported because it is related to the contract objectives. Continuous-wave oscillations have been obtained from a reverse-biased silicon diode. An output of approximately 3 mw at 8.9 Gc was obtained at 0.1 per cent efficiency. The oscillator also sometimes gave self-pumped parametric oscillations, which at first were inexplicable but now have been identified. (Author)

Descriptors :   (*SEMICONDUCTOR DIODES, MICROWAVE EQUIPMENT), (*VARACTOR DIODES, MICROWAVE EQUIPMENT), WAVE PROPAGATION, TUNING DEVICES, MICROWAVE OSCILLATORS, SILICON, RADIOFREQUENCY POWER

Distribution Statement : APPROVED FOR PUBLIC RELEASE