Title :
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., Nat. Chung Cheng Univ., Chiayi, Taiwan
fDate :
Oct. 29 2012-Nov. 1 2012
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 :
antenna phased arrays; array signal processing; coplanar waveguides; matrix algebra; waveguide antenna arrays; 2D 4×4 multibeam phased antenna array; 4-way Butler matrices; Butler matrix beamforming technique; CPWG configuration; compact two-dimensional phased antenna array; frequency 2.45 GHz; grounded coplanar-waveguides Butler matrices; horizontal angle control; integrated array; microstrip line-based Butler matrix; stack controls; Antenna measurements; Antenna radiation patterns; Array signal processing; Arrays; Butler matrix; Switches; Transmission line matrix methods; Beamforming; Butler matrix; Grounded coplanar-waveguide; Phased array;
Conference_Titel :
Microwave Conference (EuMC), 2012 42nd European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2215-7
Electronic_ISBN :
978-2-87487-026-2
