Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-04-14
1985-02-12
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5NQ, G01S 1362
Patent
active
044994672
ABSTRACT:
Doppler radar sets of the type including circuitry for determining and displaying sense of target motion along the radar beam. The Doppler phase shifters in the I and Q channels of pulse radars of this type are designed to operate at frequencies much higher than the Doppler baseband frequencies by selecting one of the Doppler sidebands of the radar's pulse repetition frequency, or one of the sidebands of a harmonic of such pulse repetition frequency, for application to said Doppler phase shifters. The higher operating frequency simplifies the design and construction of the Doppler phase shifters.
REFERENCES:
patent: 3088109 (1963-04-01), Meyer
patent: 3422430 (1969-01-01), Rittenbach
patent: 3562750 (1971-02-01), Fishbein et al.
patent: 3796989 (1974-03-01), Ravas et al.
patent: 3896436 (1975-07-01), Johnson
patent: 4217582 (1980-08-01), Endo et al.
patent: 4217585 (1980-08-01), Fishbein et al.
Koelle et al., "Doppler Radar w/Cooperative Target Measures to Zero Veloc and Senses the Direction of Motion", Mar. 1977, pp. 492-493.
Skelnik, "Introduction to Radar Systems", McGraw-Hill 1962, pp. 100-103.
Barron Jr. Gilberto
Goldberg Edward
Lane Anthony T.
Murray Jeremiah G.
The United States of America as represented by the Secretary of
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