Wide-Band Stacked Double Annular-Ring Dielectric Resonator Antenna at the End-Fire Mode Operation
Y-X. Guo, Y-F. Ruan, X-Q. Shi
A novel wide-band stacked double annular-ring dielectric resonator antenna (DRA) is numerically investigated in this paper. At either layer, a larger annular-ring dielectric resonator is placed concentrically outside a smaller annular-ring one to form a stacked double annular-ring DRA. The antenna is operating at the end-fire mode. The effects of antenna parameters such as dielectric constant, probe length and air-gaps thickness are investigated. Compared to the obtained 18% bandwidth of the stacked annular-ring DRA, the proposed stacked double annular-ring DRA can offer an impedance bandwidth of ~42% for the return loss below -10 dB. The radiation patterns are stable in the passband.
IEEE Transactions on Antennas and Propagation
2005
October
53
10
3394 - 3397
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