Title :
A novel low-cost beam-steering technique based on the extended-resonance power-dividing method
Author :
Tombak, Ali ; Mortazawi, Amir
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
A novel phased array based on the extended-resonance power-dividing method has been presented. This method eliminates the need for separate power splitter and phase shifters in a conventional phased-array system, resulting in a substantial reduction in circuit complexity and cost. As a proof of principle, a 2-GHz extended-resonance-based phased array using varactor diodes and microstrip patch antennas has been designed, fabricated, and tested. The measured scan range is 20° and the measured efficiency of the extended-resonance phased-array feed is typically 80%, which corresponds to 1 dB of insertion loss.
Keywords :
UHF antennas; antenna phased arrays; antenna radiation patterns; beam steering; circuit complexity; losses; microstrip antenna arrays; power dividers; varactors; 1 dB; 2 GHz; 80 percent; array effective radiation pattern; beam scanning; circuit complexity; circuit cost; efficiency; extended-resonance power-dividing method; extended-resonance-based phased array; insertion loss; low-cost beam-steering technique; measured scan range; microstrip patch antennas; phase shifters; phased array; power dividing; power splitter; varactor diodes; Antenna measurements; Complexity theory; Costs; Diodes; Loss measurement; Microstrip antenna arrays; Phase measurement; Phase shifters; Phased arrays; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2003.822031
