Title :
Active integrated antennas using planar quasi-Yagi radiators
Author :
Qian, Yongxi ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
This paper reviews the development of several types of active integrated antennas at the authors group based on a novel planar quasi-Yagi structure which has broad bandwidth (>50%), high efficiency (>93%), low cross-polarization (<-13 dB), good front-to-back ration (>13 dB) and extremely compact size. The basic performances of the elementary quasi-Yagi antenna is first described, followed by several application examples including a high-efficiency push-pull power amplifier, a 5.8 GHz quadrature direct conversion receiver, as well as a 60 GHz self-oscillating mixer front-end
Keywords :
active antennas; antenna radiation patterns; microstrip antennas; millimetre wave antennas; 5.8 GHz; 60 GHz; 93 percent; EHF; SHF; active integrated antennas; broad bandwidth; compact size; high efficiency; low cross-polarization; microwave antennas; planar quasi-Yagi radiators; push-pull power amplifier; quadrature direct conversion receiver; self-oscillating mixer front-end; Antenna measurements; Bandwidth; Broadband antennas; Circuits; Dielectric measurements; Dielectric substrates; Dipole antennas; Microstrip antennas; Planar arrays; Radio frequency;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2000, 2nd International Conference on. ICMMT 2000
Conference_Location :
Beijing
Print_ISBN :
0-7803-5743-4
DOI :
10.1109/ICMMT.2000.895595
