Accession Number : AD0434575


Title :   VARACTOR DIODE INDUSTRIAL PREPAREDNESS MEASURES.


Descriptive Note : Quarterly progress rept. no. 12, 25 Mar-25 June 63.


Corporate Author : MICROWAVE ASSOCIATES INC BURLINGTON MASS


Report Date : 25 Jun 1963


Pagination or Media Count : 26


Abstract : Efforts continued on a program to mass-produce a microwave silicon diffused mesa varactor diode. Work was performed to determine the dependence of series resistance on measurement frequency. Glass varactor diodes were tested for series resistance at both 500 Mc and 1120 Mc. The series resistance measurement consists of shunting a transmission line with a varactor, and it was adopted because of its convenience and reproducibility. At low measurement frequencies circuit losses become important and there is evidence that indicates that series resistance should be measured in the vicinity of 1 to 2 Gc to obtain satisfactory results. A new welded varactor package style is also discussed. This varactor package has allowed the use of a bonded contact, open type construction for ease of fabrication, and welded final seal which has provided for a more reliable finished semiconductor product. (Author)


Descriptors :   MANUFACTURING , VARACTOR DIODES , PRODUCTION , SILICON , DIFFUSION , ELECTRICAL RESISTANCE , MEASUREMENT , MICROWAVE EQUIPMENT , FREQUENCY , GLASS , WELDING , FIXED CONTACTS , BONDING , SEALS(STOPPERS) , CAPACITANCE


Distribution Statement : APPROVED FOR PUBLIC RELEASE