Title :
Phase-shifterless beam-steering micro-slotline antenna
Author :
Chen, Chih-Chiang ; Tzuang, Ching-Kuang C.
Author_Institution :
Inst. of Electr. Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
4/11/2002 12:00:00 AM
Abstract :
A novel beam-steering leaky-wave antenna that uses reactive loading capacitors along the leaky line is presented. The reactive loading varies the phase constant of the leaky line, altering the direction of the main beam. A prototype was constructed and tested, demonstrating that a beam scanning angle of 23° is obtained by periodically loading the 0.06527 pF capacitors along the leaky line at 4 GHz. An electronic beam-steering antenna of scanning angle 13° was established by replacing the metal-insulator-metal (MIM) capacitors with varactors
Keywords :
MIM devices; beam steering; leaky wave antennas; microstrip antennas; microwave antennas; slot line components; varactors; 0.06527 pF; 4 GHz; MIM capacitors; SHF; beam scanning angle; beam-steering leaky-wave antenna; electronic beam-steering antenna; leaky line; main beam direction; micro-slotline antenna; microstrip line; microwave radar; phase constant; phase-shifterless beam-steering antenna; radiation patterns; reactive loading capacitors; reactive-loaded antenna; varactors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020249
