Accession Number : AD0711577

Title :   BULK SEMICONDUCTOR LIMITERS.

Descriptive Note : Final rept. 10 Feb 69-9 Feb 70,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y DIV OF ELECTROPHYSICS

Personal Author(s) : Mortenson,K. E. ; Park,J. N. ; Armstrong,A. L. ; Bakeman,P. ; Gutmann,R.

Report Date : AUG 1970

Pagination or Media Count : 117

Abstract : A single, silicon element, iris limiter component was developed for X and K-band operation. Typical limiters have provided good isolation (25 db ) with small low level loss (0.5 dB) and good high power handling capability (20 KW at X-band and 10 KW at Ku-band). Numerous fabrication procedures and element structures were evaluated in order to obtain an optimal element. The use of shallow diffused contacts, a checkerboard configuration, and a thin ( 3 to 5 mils) dot-plane structure proved most desirable. Compensated GaAs elements were investigated. Multiple slit irises and filter techniques were investigated in order to achieve broader bandwidth operation. A three element filter comprised of one active limiter and two passive cavities doubled the 1 dB down bandwidth. Similar broadband performance was achieved with a double slit iris, with improved low level loss, but degraded limiting characteristics. (Author)

Descriptors :   (*LIMITERS, DESIGN), (*SEMICONDUCTOR DEVICES, RADIOFREQUENCY POWER), MICROWAVE EQUIPMENT, WAVEGUIDE IRISES, X BAND, K BAND, SILICON, MANUFACTURING

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE