Accession Number : ADD004924

Title :   Time Frequency Diversity System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Fincke,George C ; Taylor,George W

Report Date : 27 Sep 1977

Pagination or Media Count : 5

Abstract : A plurality of signals to be separated in time as well as in frequency are simultaneously applied to the input of a power amplifier whose output is applied to the input of a fast-tuned filter. The filter is capable of being almost-instantaneously tuned to any of the frequencies of the input signals to control the output at any given time or combinations of times. The filter is in the form of a coaxial section with an input to the inner conductor of the coaxial section and the output taken from a strip line, parallel to the inner coaxial conductor, coupled to a coaxial output cable at the top of the coaxial filter. The tuning is by a plurality of inductive spokes positioned at various locations within the filter, and connected between the inner and outer coaxial conductors by switching diodes, that are externally controlled, to provide almost instantaneous control of the resonant frequency of the filter. (Author)

Descriptors :   *Patents, *Coaxial filters, Frequency agility, Ultrahigh frequency

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE