A simple measurement technique for characterizing active antennas

Author

Tsai, H.S. ; Kent, S.D. ; Lee, H. ; York, R.A.

Author_Institution

Dept. of Electr. Eng., California Univ., Santa Barbara, CA, USA

fYear

1994

fDate

23-27 May 1994

Firstpage

1469

Abstract

Testing active antennas or polarimetric radar calibrators in the far-field (plane wave excitation) is complicated by imperfect isolation between transmitting and receiving channels. We describe a far-field reflectometry setup which overcomes this problem. A large dynamic range is achieved by modulating the active element bias and using a quadrature receiver and lock-in detection scheme. Measured results compare favorably with other existing techniques.<>

Keywords

active antennas; antenna testing; microwave measurement; microwave reflectometry; polarimetry; active antennas; active element bias modulation; far-field; far-field reflectometry setup; imperfect isolation; large dynamic range; lock-in detection scheme; plane wave excitation; polarimetric radar calibrators; quadrature receiver; receiving channels; simple measurement technique; transmitting channels; Dynamic range; Measurement techniques; Radar antennas; Radar detection; Radar polarimetry; Receiving antennas; Reflectometry; Testing; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1994., IEEE MTT-S International

Conference_Location

San Diego, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-1778-5

Type

conf

DOI

10.1109/MWSYM.1994.335134

Filename

335134