Title :
Novel hexagon shaped dielectric resonator antenna array for wideband applications
Author :
Zhang Xiangjun ; Lai Qifeng ; Ma Xiaoping
Author_Institution :
Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol. (CUMT), Xuzhou, China
Abstract :
This paper presents a new dielectric resonator antenna (DRA) for wideband applications, which has a stepped construction-the hexagon shaped upper resonator and triangle shaped lower resonator. The DRA is excited by a conformal inverted-trapezoidal patch connected to a microstrip line. The wider bandwidth is achieved, because of three factors: compact honeycomb and triangle shaped dielectric resonator, a conformal inverted-trapezoid patch as a feed mechanism, and a copper-clad substrate as a baseboard. A 76.25% matching bandwidth (S11<10 dB) is achieved with broadside radiation patterns, where the impedance bandwidth covers a frequency range from 5.1 to 11.1 GHz. Based on the proposed structure, a four-element array is designed, and the degree of the directivity increases largely.
Keywords :
broadband antennas; conformal antennas; dielectric resonator antennas; microstrip antenna arrays; conformal inverted-trapezoidal patch antenna; four-element array; frequency 5.1 GHz to 11.1 GHz; hexagon shaped dielectric resonator antenna array; hexagon shaped upper resonator; microstrip line; triangle shaped dielectric resonator; triangle shaped lower resonator; wideband applications; Antenna arrays; Antenna radiation patterns; Bandwidth; Broadband antennas; Dielectric resonator antennas; Dielectric substrates; Feeds; Impedance; Microstrip antenna arrays; Pattern matching; dielectric resonator antenna (DRA); hexagon shaped upper resonator and triangle shaped lower resonator; inverted-trapezoidal patch;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355564