| Summary: | 碩士 === 國立暨南國際大學 === 電機工程學系 === 106 === Dielectric resonator antenna with itself has quite high dielectric constant. Thus cause under the same operating frequency. The volume can be better than a microstrip antenna miniaturization. Coupled with dielectric resonator antenna has the characteristics of the resonant cavity. Let the antenna itself under the condition of the smaller, still retain a certain amount of bandwidth and gain. It also the reason why still remain, even if in need of additional cost.
This study proposed cylindrical dielectric resonator antenna can be applied to wireless LAN. The material of the dielectric resonator is a kind of ceramics that mix up part of the concentration of alumina. Its dielectric constant is about 9.8. The frequency operation band of the proposed design can cover the high band of wireless local area networks, such as 5.15 GHz to 5.35 GHz and 5.725 GHz to 5.825 GHz range. This Dielectric resonator antenna fed by microstrip line and through a long slot to excite cylindrical resonator modes, and slot itself is not as a radiation element. After calculation, the resonator for HE11 mode.In the end, The impedance bandwidth of proposed antenna is 19.5% (4.86 to 5.91 GHz) and A peak gain of 6.49 dBi are obtained. Antenna radiation pattern traveling in the positive z direction. This design of antenna can cover and applied to WLAN band.
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