Title :
Microwave beam focusing/shaping phased antenna arrays
Author :
Chang, Chia-Chan ; Domier, Calvin W. ; Luhmann, N.C.
Author_Institution :
Dept. of Electr. Eng., Nat. Chun-Cheng Univ., Chia, Taiwan
Abstract :
A newly proposed 1×8, 18 GHz beam focusing/shaping PAA has been designed, constructed and tested. The true time delay (TTD) approach employs a piezoelectric bending motor to perturb the EM field in the vicinity of the transmission line, thereby generating the required time delay. Several different transmission media have been investigated and tested based on this technology. Array beam focusing capabilities have been experimentally demonstrated with ∼10° 3-dB beam width variation and ∼12 cm focal distance change.
Keywords :
antenna phased arrays; delay lines; electromagnetic fields; focusing; microwave antenna arrays; piezoelectric transducers; shaped beam antennas; array beam focusing; beam width variation; delay lines; electromagnetic field; focal distance; microwave beam focusing; microwave beam shaping; phased antenna arrays; piezoelectric bending motor; piezoelectric transducers; transmission line; transmission media; true time delay; Antenna arrays; Delay effects; Delay lines; Focusing; Microwave antenna arrays; Particle beams; Phased arrays; Plasma diagnostics; Power transmission lines; Transmission line theory;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1338940
