Accession Number : AD0456484


Title :   HIGH POWER VARACTOR FOR UHF TRANSMISSION.


Descriptive Note : Quarterly progress rept. no. 1, 1 Jul-30 Sep 64.


Corporate Author : MOTOROLA INC PHOENIX AZ


Report Date : 30 Sep 1964


Pagination or Media Count : 16


Abstract : Double diffused devices have been improved from a previous level of 21 watts output at about 55% efficiency to 24 watts output at 60% efficiency. This has been accomplished by using increased silicon die diameter from .030 in. to .040 in. Consideration was given to the use of a planar, epitaxial device in a cartridge type package with the objective of further improving thermal characteristics and reducing package parasitics. Devices were fabricated employing a junction diameter of approximately .030 inch which delivered 25 watts output at 64% efficiency. (Author)


Descriptors :   *VARACTOR DIODES , SILICON , ULTRAHIGH FREQUENCY , EPITAXIAL GROWTH , TEST EQUIPMENT , ELECTRONIC EQUIPMENT


Distribution Statement : APPROVED FOR PUBLIC RELEASE