Title :
A two-dimensional beam-scanning linear active leaky-wave antenna array
Author :
Hu, Cheng-Chi ; Jou, Christina F. ; Wu, Jin-Jei
Author_Institution :
Inst. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
3/1/1999 12:00:00 AM
Abstract :
This work presents a new technique for electronic two-dimensional beam scanning using a phase-shifterless linear active leaky-wave antenna array. The varactor-tuned voltage-controlled oscillators (VCOs) and coupling network are implemented in this array. The measured pattern of this 4×1 leaky-wave antenna array shows that the main beam can be continuously scanned from 68° to 40° in elevation as the frequency varied from 8.24 to 9.15 GHz. By tuning the free-running frequencies of the end elements, the main beam can be continuously scanned from -26° to +10° in azimuth. A maximum ERP of 667 mW is measured at 8.9 GHz for this active antenna array
Keywords :
active antenna arrays; antenna radiation patterns; leaky wave antennas; linear antenna arrays; microstrip antenna arrays; scanning antennas; tuning; varactors; voltage-controlled oscillators; 2D beam-scanning antenna array; 667 mW; 8.24 to 9.15 GHz; continuously scanned main beam; coupling network; linear active leaky-wave antenna array; measured pattern; phase-shifterless array; two-dimensional beam-scanning; varactor-tuned VCOs; voltage-controlled oscillators; Antenna arrays; Antenna measurements; Azimuth; Enterprise resource planning; Frequency measurement; Leaky wave antennas; Linear antenna arrays; Phased arrays; Tuning; Voltage-controlled oscillators;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
