Communications: radio wave antennas – Antennas – Wave guide type
Patent
1992-11-24
1995-04-04
Hajec, Donald
Communications: radio wave antennas
Antennas
Wave guide type
343754, 343772, 343774, 343777, 343778, 343786, 343853, H01Q 1300
Patent
active
054041481
ABSTRACT:
An antenna having antenna modules for an extremely wideband active monopulse phased array system, the modules including a housing provided with four radiators of the rectangular open-ended waveguide type and with an electric circuit. With the antenna modules being suitably stacked, the radiators constitute a substantially continuous antenna surface, the radiators being positioned at the points of intersection of a system of equilateral triangles which make up the antenna surface. After preamplification, phase shift and down-conversion to an intermediate frequency, received signals from a large number of antenna modules are combined to yield a sum beam, an azimuth difference beam and an elevation difference beam.
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Claridge, et al., 19th European Microwave Conference 1989, Sep. 1989, pp. 1131-1140. "Design of a Phased Array Antenna Using Solid State Transmit/Receive Modules".
Kinzel, et al., Microwave Journal, vol. 30, No. 1, Jan. 1987, pp. 89-90, 92, 94, 96, 98, 100 and 102. "V-Band, Space-Based Phased Arrays".
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Chen. G-AP International Symposium, Aug. 1973, pp. 376-377. "Octave Band Waveguide Radiators for Wide-Angle Scan Phased Arrays".
Hajec Donald
Hollandse Signaalapparaten B.V.
Wigmore Steven
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