Accession Number : AD0809277

Title :   A STUDY OF ELECTRONICALLY TUNABLE MICROWAVE (X-BAND) GENERATORS.

Descriptive Note : Final rept.,

Corporate Author : RADIO CORP OF AMERICA NEW YORK DEFENSE ELECTRONIC PRODUCTS

Personal Author(s) : Bossard, B. B. ; Ernst, R. L. ; Torrione, P. S.

Report Date : JAN 1967

Pagination or Media Count : 75

Abstract : The development of an X-band solid-state source that uses a minimum number of states is summarized in this report. The high-power version of this source generates 330 mw by cascading a transistor oscillator tripler with a braodband varactor doubler and a bimode quadrupler. A lower-power version, which used the same transistor oscillator tripler as a driver, develops a minimum power output of 140 mw and is mechanically tunable from 9.7 to 9.9 GHz. The same unit has a peak power output of 250 mw. A theoretical study shows that the least complicated circuitry is required and highest efficiency is available with the hyper-abrupt diode frequency multiplier. Without the use of idler cirucits, direct multiplication may be achieved by an octupler over a broad bandwidth. However, the presently available hyper-abrupt diodes are limited to maximum output frequencies of about 5 GHz, due to cutoff frequency limitations. Therefore use of a high power octupler with an output at 10 GHz is not within the present state of the art. (Author)

Descriptors :   *TRANSISTORS), (*MICROWAVE OSCILLATORS, X BAND, VARACTOR DIODES, FREQUENCY MULTIPLIERS, TUNING DEVICES, CIRCUITS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE