Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-01-07
1979-01-09
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
325 56, 325370, G01R 2922
Patent
active
041341180
ABSTRACT:
A control system for an aircraft radio-navigation installation having forward-looking and rearward-looking antennas. The system provides the usual diversity reception facilities of "hunting" and then locking on to one antenna when an acceptable signal is received and in addition it selects the appropriate antenna with reference to the velocity and attitude of the aircraft relative to a ground transmitter even if the signal received on the inappropriate antenna is acceptable.
REFERENCES:
patent: 3182263 (1965-05-01), Gossard
patent: 3368151 (1968-02-01), Verwey et al.
patent: 3671967 (1972-06-01), Fries
patent: 3693088 (1972-09-01), Rustako, Jr. et al.
Berger Richard E.
Tamoshunas Algy
U.S. Philips Corporation
Wilbur Maynard R.
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