Title :
Broadband Dielectric Resonator Antenna With Metal Coating
Author :
Chang, Tze-Hsuan ; Kiang, Jean-Fu
Author_Institution :
Graduate Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei
fDate :
5/1/2007 12:00:00 AM
Abstract :
A broadband dielectric resonator (DR) antenna is proposed, which consists of a rectangular DR coated with metal on three sides and placed on a ground plane. The structure is analyzed by modelling the dielectric-air interface as perfect magnetic conductor (PMC). A coplanar waveguide (CPW) with terminating slots is used to feed the antenna. Measurement results exhibit a wide bandwidth of about 47% over which the Ethetas pattern on the horizontal plane is nearly omnidirectional. The 10-dB bandwidth of this broadband DR monopole covers 4.2-6.8 GHz. Hence, it can be used for WLAN 802.11a applications
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; coplanar waveguides; dielectric resonator antennas; microwave antennas; monopole antennas; wireless LAN; 4.2 to 6.8 GHz; CPW; Ethetas pattern; PMC; WLAN 802.11a application; antenna feed; broadband dielectric resonator antenna; coplanar waveguide; dielectric-air interface; metal coating; monopole antenna; perfect magnetic conductor; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Coatings; Conductors; Coplanar waveguides; Dielectric resonator antennas; Magnetic analysis; Slot antennas; Dielectric resonator (DR) antenna; monopole antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2007.895582
