Communications: radio wave antennas – Antennas – Having electric space discharge device
Patent
1980-06-30
1982-01-26
Lieberman, Eli
Communications: radio wave antennas
Antennas
Having electric space discharge device
343 5PD, 343803, G01S 1304, H01Q 126
Patent
active
043131182
ABSTRACT:
An improved microwave proximity sensor including 1/4-wavelength folded dipole antenna performing the functions of a transmitting antenna, a receiving antenna, and a frequency determining element in a microwave oscillator.
REFERENCES:
patent: 2939130 (1960-05-01), Robinson
patent: 2943189 (1960-06-01), Crump
patent: 3027842 (1962-04-01), Hopkins
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