Title :
4-b true time-delay feeder using MEMS switches for linear phased-array antennas
Author :
Lee, Gab-Yong ; Choi, Yeon-Bong ; Shin, Jong-Dug ; Kim, Boo-Gyonn
Author_Institution :
Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea
Abstract :
We proposed a 4-b optical TTD feeder for PAAs that is composed of a fixed wavelength laser source, MEMS switches, and single mode fibre (SMF) delay lines. The time-delay differences at the beam steering angles of 60°, 30°, -30°, -60° for a 10 GHz linear PAA were measured to be about 42 ps, 26 ps, 25 ps, 38 ps ±2.5%. We obtained the maximum gain of 11.6 dB for the designed four-element PAA at an RF frequency of 10 GHz.
Keywords :
antenna phased arrays; beam steering; micro-optics; micromechanical devices; microwave photonics; optical delay lines; 10 GHz; 11.6 dB; 25 ps; 26 ps; 38 ps; 4-b optical TTD feeder; 4-b true time-delay feeder; 42 ps; MEMS switches; RF frequency; SMF delay lines; beam steering angles; fixed wavelength laser source; four-element PAA; linear phased-array antennas; maximum gain; single mode fibre delay lines; time-delay differences; Antenna feeds; Antenna measurements; Beam steering; Delay lines; Fiber lasers; Gain; Laser modes; Microswitches; Radio frequency; Wavelength measurement;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036686
