Title: Cassegrainian antenna with beam waveguide feed to reduce spillover

Abstract: An aerial system (antenna system) comprises dual-reflector aerial consisting of a main reflector and subreflector; a primary feed whose input and output ends are fixed for elevation and azimuth rotation of said dual-reflector aerial; a plane reflector which is turned together with said dual-reflector aerial around an elevation rotating axis; a first curved reflector for reflecting waves generated from said primary feed; and second and third curved reflectors which sequentially reflect to lead the wave reflected by said first curved reflector to said plane reflector.

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Other info:

Inventors: Mizusawa, Motoo (Kamakura, JP)
Kinoshita, Chikao (Amagasaki, JP)
Betsudan, Shinichi (Amagasaki, JP)
Sato, Sigeru (Amagasaki, JP)

Application Number: 946619
Filing Date: 1978-09-28
Publication_date: 1980-01-29
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Class(es): 343/781CA 343/837
Other Classes:
US Patent Ref:

3821746	Jun, 1974	Mizusawa et al.	343/781.
4044361	Aug, 1977	Yokoi et al.	343/781.
4062018	Aug, 1976	Yokoi et al.	343/781.

Other Refs:
Primary Examiner: Lieberman, Eli
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier