A two-parameter circular aperture distribution with narrow beamwidth and low sidelobes

Author

Jamnejad, V.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

fYear

1990

fDate

7-11 May 1990

Abstract

Summary form only given. A circular aperture distribution is proposed that has two parameters that are easily related to the sidelobe ratio (ratio of peak to first sidelobe), the sidelobe taper ratio (ratio of the first to second sidelobe level), beamwidth, efficiency, and other pattern quantities. This distribution provides an additional degree of flexibility in pattern tradeoff studies. Specifically, given a fixed first sidelobe ratio and sidelobe taper, the narrowest main beamwidth can be obtained. This circular aperture distribution has the form of a modified lambda function. The results obtained are useful in design tradeoffs for multibeam high-efficiency low-sidelobe antenna systems increasingly in demand for new generations of satellite systems, e.g., the L-band land mobile satellite system and the Ka-band personal access satellite system.<>

Keywords

antenna radiation patterns; mobile radio systems; satellite antennas; L-band; antenna radiation patterns; beamwidth; circular aperture distribution; efficiency; lambda function; land mobile satellite system; low sidelobes; multibeam antenna systems; narrow beamwidth; personal access satellite system; sidelobe ratio; sidelobe taper ratio; Aperture antennas; L-band; Lighting; Mobile antennas; Propulsion; Satellite antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115489

Filename

115489