Accession Number : ADD010051

Title :   Active Receiving Antenna System.

Descriptive Note : Patent Application,


Personal Author(s) : Brune,John F

Report Date : 28 Jan 1983

Pagination or Media Count : 21

Abstract : An active antenna system for an airborne high frequency single sideband receiver comprised of a shorted loop type antenna having an inductive characteristic over the frequency range of 2.0 to 10.0MHz and which is tuned to resonance at a selected operating frequency by shunting the antenna at its feedpoint by selectively switched sets of voltage variable capacitors. Also coupled to the feedpoint is a field effect transistor which is adapted to provide radio frequency amplification. Impedance matching between the output of the field effect transistor and the input of a radio frequency receiver is further provided a transistor configured as an emitter follower. (Author)

Descriptors :   *Patent applications, *Loop antennas, *Radio receivers, *Aircraft antennas, *Receivers, Antenna feeds, Single sideband communications, Impedance matching, Amplification, Field effect transistors, Coupling(Interaction), Range(Extremes), Variable capacitors, Frequency, Voltage, Switching, Transistors, Radiofrequency, Feeding, Antennas

Subject Categories : Electrical and Electronic Equipment
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE