Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-07-19
1977-12-27
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
324 58R, G01R 2700, G01S 740
Patent
active
040657698
ABSTRACT:
A method of checking or testing the functionality of transmitter-receiver reversing switches of pulse Doppler-radar installations for protecting the microwave-receiver component, testing being accomplished by means of a microwave-test signal supplied to the microwave-receiver component between the antenna and the transmitter-receiver reversing switches. According to the invention, the Doppler angle error voltages brought about by such microwave-test signal is measured once with and once without the radar transmitter turned-on, there is formed the difference signal between both of the momentarily measured Doppler angle-error voltages, and when there occurs such a difference signal there is concluded that there is present a defective transmitter-receiver reversing switch.
REFERENCES:
patent: 2549131 (1951-04-01), Rideout
patent: 2836813 (1958-05-01), Flower et al.
patent: 2997709 (1961-08-01), Mumford
patent: 3048838 (1962-08-01), Bretscher
patent: 3221328 (1965-11-01), Isch
patent: 3883870 (1975-05-01), Kunz
"Microwave Duplexers", by Smullin & Montgomery, MIT Radiation Laboratory Series, No. 14, McGraw-Hill Book Co., 1948, pp. 400-430.
Hubler Malcolm F.
Kleeman Werner W.
Siemens-Albis Aktiengesellschaft
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