Communications: radio wave antennas – Antennas – Wave guide type
Patent
1978-06-28
1982-03-09
Moore, David K.
Communications: radio wave antennas
Antennas
Wave guide type
343837, G09F 900
Patent
active
043192505
ABSTRACT:
A subreflector and reflectors in a primary radiation system, these constituting an offset dual-reflector aerial, are subjected to the so-called reflector-surface shaping. The main reflector is formed as a part of a revolutional paraboloid, and is a combination of a number of congruent reflector-segments. With such an arrangement, the manufacturing cost of a large-sized main reflector is reduced. The production error, and the aerial gain reduction and the deterioration of a wide-angle directivity due to the production error are minimized.
REFERENCES:
patent: 2703842 (1955-03-01), Lewis
patent: 3821746 (1974-06-01), Mizusawa et al.
Mizusawa, M. "Effect of Subreflector Radiation Pattern on a Cassegrain Antenna" Journal of the Electronic and Communication Society of Japan, 1969.
Y. Mizugutch "Offset Dual Reflector Antenna" AP-5 International Symposium, U. of Mass. Session 1, Oct. 11-15, 1976.
Cook, Elam and Zucker "The Open Cassegrain Antenna" , BSTJ vol. 44, No. 7, Sep. 1965, pp. 1255-1300.
Galindo "Design of Dual Reflector Antennas with Arbitrary Phase and Amplitude Distributions" IEEE Trans. vol. AP-12, Jul. 1964.
Betsudan Shinichi
Mizusawa Motoo
Sato Shigeru
Takano Tadashi
Mitsubishi Denki & Kabushiki Kaisha
Moore David K.
Nippon Telegraph & Telephone Public Corp.
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