A compact two-dimensional phased array using grounded coplanar-Waveguides Butler matrices

Author

Wei-Yang Chen ; Ya-Ru Hsieh ; Chi-Cheng Tsai ; Yi-Ming Chen ; Chia-Chan Chang ; Sheng-Fuh Chang

Author_Institution

Dept. of Electr. Eng., Innovations Nat. Chung Cheng Univ., Chiayi, Taiwan

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

421

Lastpage

424

Abstract

A 2.45 GHz two-dimensional (2-D) 4×4 multi-beam phased array was designed, based on the Butler matrix beamforming technique. Sixteen beam states are produced by two stacks of 4-way Butler matrices, where one stack controls the vertical angle and the other one controls the horizontal angle. To achieve system compactness, the Butler matrix in grounded coplanar-waveguide (CPWG) configuration is newly designed, leading to 54% size reduction comparing with the microstrip line-based Butler matrix. The demonstration of beamforming capability of the integrated array is provided.

Keywords

UHF antennas; antenna phased arrays; array signal processing; coplanar waveguides; microstrip lines; 2D multibeam phased array; Butler matrix beamforming technique; UHF antennas; beamforming capability; frequency 2.45 GHz; grounded coplanar waveguides Butler matrices; microstrip line based Butler matrix; Antenna measurements; Antenna radiation patterns; Array signal processing; Arrays; Butler matrix; Switches; Transmission line matrix methods; Beamforming; Butler matrix; Grounded coplanar-waveguide; Phased array;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference (EuRAD), 2012 9th European

Conference_Location

Amsterdam

Print_ISBN

978-1-4673-2471-7

Type

conf

Filename

6450708