Title :
Optimization of cross polarization characteristics for dual-polarized patch antennas
Author :
Nishimoto, Kengo ; Fukasawa, Toru ; Ohtsuka, Masataka ; Makino, Shigeru
Author_Institution :
Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
Base station dual-polarized patch antennas for cellular mobile radio require us to decrease cross-polarization for the planes tilted from the horizontal plane. We report the cross polarization characteristics in the tilted planes, and derive analytically that there exists the optimum substrate permittivity to achieve low cross-polarization. Moreover, we validate these characteristics both by FDTD simulations and by experiments.
Keywords :
antenna radiation patterns; cellular radio; electromagnetic wave polarisation; finite difference time-domain analysis; microstrip antenna arrays; optimisation; permittivity; substrates; FDTD simulations; base station antennas; cellular mobile radio; cross polarization characteristics; dual-polarized patch antennas; optimization; optimum substrate permittivity; tilted planes; Base stations; Feeds; Finite difference methods; Land mobile radio; Mobile antennas; Mutual coupling; Patch antennas; Permittivity; Polarization; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330315
