Title :
A uniplanar quasi-Yagi antenna with wide bandwidth and low mutual coupling characteristics
Author :
Yongxi Qian ; Deal, W.R. ; Kaneda, N. ; Itoh, T.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We report for the first time a planar quasi-Yagi antenna printed on a single layer of high dielectric constant substrate (Durold, /spl epsiv//sub r/=10.2) which measures 48% bandwidth (VSWR<2). The antenna radiates an end-fire beam, with a front-to-back ratio >15 dB and cross-polarization level below -12 dB across the entire frequency band. A very low mutual coupling level of below -22 dB has been measured for a two-element array with /spl lambda//sub 0//2 separation.
Keywords :
Yagi antenna arrays; antenna radiation patterns; electromagnetic coupling; microstrip antenna arrays; planar antenna arrays; bandwidth; cross-polarization level; end-fire beam; front-to-back ratio; high dielectric constant substrate; mutual coupling characteristics; two-element array; uniplanar quasi-Yagi antenna; Antenna measurements; Bandwidth; Broadband antennas; Dielectric measurements; Dipole antennas; Microstrip antennas; Mutual coupling; Polarization; Slot antennas; Yagi-Uda antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789463
