Title :
Beam controllable microstrip antenna with switching diode
Author :
Nishiyama, Eisuke ; Hisadomi, Ryoji ; Aikawa, Masayoshi
Author_Institution :
Fac. of Sci. & Eng., Saga Univ.
Abstract :
In this paper, the beam controllable array antenna is proposed. The characteristics of the antenna are analyzed accurately by the FDTD method. The resonant frequency of the parasitic patch is changed by the diode bias polarity because the distribution of surface current on the parasitic patch is simply controlled by the diode on/off condition. As the mutual coupling of the patches depends on the resonant frequency of the parasitic patch, the phase of excitation voltage is changed by the diode bias. The results of the analysis make it clear that the proposed array antenna has a capability of easy beam control
Keywords :
current distribution; diodes; finite difference time-domain analysis; microstrip antenna arrays; switching circuits; FDTD method; beam controllable microstrip antenna array; diode bias polarity; diode on-off condition; excitation voltage; mutual coupling; parasitic patch; resonant frequency; surface current distribution; switching diode; Antenna arrays; Antenna feeds; Antenna radiation patterns; Diodes; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Probes; Resonant frequency; Voltage control;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711061
