Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1980-06-09
1982-06-01
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
333137, 343 5PD, 343 8, G01S 1304
Patent
active
043330762
ABSTRACT:
A millimeter wave transmitting and receiving head having an excellent technical quality, which is inexpensive to produce and has minimum overall dimensions. The head has for example a guide with a square cross-section connected by a duplexer provided with fins to two guides having rectangular cross-sections and with crossed polarizations. One of the rectangular guides is semicircular so that it can receive through an opening an orifice of the other rectangular guide. A symmetrical mixer having two diodes receives the signal from the two guides and has two outputs. A Gunn diode-type or avalanche-type oscillator serves as the transmitter and the local signal generator. The head is completed by a receiving amplifier and an antenna for constituting a transmitter-receiver. A radar can be obtained by addition of a quarter-wave plate level with antenna.
REFERENCES:
patent: 3448822 (1969-06-01), LaLone et al.
patent: 3955194 (1976-05-01), Chua
patent: 4035797 (1977-07-01), Nagy
"Thomson-CSF"
Tubbesing T. H.
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