Beam-shape correction in deployable phased arrays

Author

Yonezawa, Rumiko ; Konishi, Yoshihiko ; Chiba, Isamu ; Katagi, Takashi

Author_Institution

Inf. Technol. Res. & Dev. Center, Mitsubishi Electr. Corp., Kanagawa, Japan

Volume

47

Issue

3

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

482

Lastpage

486

Abstract

Deployable phased-array antennas-antennas that are receiving great attention-have a major problem in that they possess the possibility of an incomplete deployment and antenna shape distortion. These effects cause a displacement of the element antenna positions that results in deviation of the phase distribution on the antenna aperture, eventually causing antenna beam deflection. We have investigated how to correct this beam deflection by observing the phased-array antenna from certain directions. There are cases when more than one observation point is necessary to carry out the proposed method depending on the extent of the antenna shape distortion and the number of the points is consulted. This correction method makes it possible to correct the deflection of the main beam and also to determine the displacement of relative element positions

Keywords

antenna phased arrays; antenna radiation patterns; electric fields; satellite antennas; shaped beam antennas; antenna aperture; antenna beam deflection; antenna shape distortion; beam-shape correction; deployable phased arrays; element antenna position displacement; observation point; phase distribution; phased-array antenna; rotating-element electric-field vector; satellite antennas; Antenna arrays; Antenna measurements; Aperture antennas; Directive antennas; Phase distortion; Phased arrays; Receiving antennas; Satellite antennas; Shape; Transmitting antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.768783

Filename

768783