A MICROSTRIP-LINE-FED ISOSCELES-TRAPEZOIDAL DIELECTRIC RESONATOR ANTENNA WITH SLOTTED GROUND PLANE FOR 2.4 GHz WLAN OPERATION

A novel microstrip-lineled isosceles trapezoidal dielectric resonator antenna (ITDRA) with a slotted ground plane is introduced. It is proved by simulation and experiment that the antenna's resonant frequency can be lowered, and the bandwidth can be increased considerably by introducing slots and optimizing their position and dimensions in the,ground plane. The proposed antenna is a wideband antenna with a 2:1 VSWR bandwidth of 21.3% centered at 2.43 GHz and exhibits good radiation characteristics and moderate gain in the entire operating band. The antenna covers important application bands viz. ISM: Bluetooth/WLAN 2.4/Wibree (802.11 b/g/n)/ZigBee, WiBro, and DMB. Lowering of the antenna's fundamental resonant frequency can be easily tuned by varying the length of either the slots or strip line. Reduced antenna size (approximate to 28% less) at a fixed frequency can thus be achieved for the proposed design. Details of the design along with experimental and simulation results are presented and discussed. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:553-557, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25773