Off-center-frequency analysis of a complete planar slotted-waveguide array consisting of subarrays

Author

Coetzee, Jacob C. ; Joubert, Johan ; McNamara, Derek A.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

Volume

48

Issue

11

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1746

Lastpage

1755

Abstract

An iterative procedure for calculating the off-center-frequency performance of a complete planar slotted-waveguide array, which consists of an arbitrary number of subarrays, is presented. The analysis includes the effects of the coupling slots from the main feed lines to the branch line guides, as well as the effects of RF manifolds, power splitters, or comparators used to distribute the power from the antenna input to the multiple subarray main lines. The procedure is applied to a large planar array for which dimensions have been obtained from an accurate metrology exercise. Good agreement between the predicted and measured performance of the array is demonstrated

Keywords

antenna feeds; antenna radiation patterns; electromagnetic coupling; iterative methods; planar antenna arrays; slot antenna arrays; waveguide couplers; RF manifolds; antenna input; antenna radiation patterns; branch line guides; comparators; coupling slots; dimensions; iterative procedure; large planar array; main feed lines; measured performance; metrology; off-center-frequency analysis; off-center-frequency performance; planar slotted-waveguide array; power distribution; power splitters; predicted performance; subarrays; Antenna feeds; Bandwidth; Frequency; Geometry; Jacobian matrices; Performance analysis; Planar arrays; Planar waveguides; Rectangular waveguides; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.900233

Filename

900233