Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1955-02-25
1978-01-10
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
G01S 923
Patent
active
040682358
ABSTRACT:
1. A frequency diversity radar transmission system comprising a source of curring periodic pulses, a magnetron type oscillator adapted to be voltage tuned for generating continuous waves of radio-frequency energy, means responsive to said pulses for voltage tuning said magnetron whereby the continuous wave output frequency of the magnetron is instantaneously shifted to successive discrete frequencies by successive pulses and the respective discrete frequencies are maintained constant for the period between any two successive pulses, a transmitting antenna, wideband amplifier means driven by the output of said magnetron and having its output coupled to said antenna, and means for periodically energizing said amplifier immediately after each of said successive shifts in frequency whereby radio-frequency pulse energy is coupled through said amplifier to said transmitting antenna only for a relatively small fraction of the period of said recurring pulses, each of the transmitted pulses comprising discrete frequencies.
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Peters, Jr. Philip H.
Wilbur Donald A.
Kanars Sheldon
Murray Jeremiah G.
The United States of America as represented by the Secretary of
Tubbesing T. H.
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