A Broadband High Gain Antenna with Parasitic Elements for Wireless Applications

Abstract

Wireless devices and mobile communication are very popular and commonly used nowadays. Antennas allow data transfer between wireless devices without using cable. Researchers always try to improve some technical characteristics of antennas such as antenna gain, bandwidth, radiation pattern. High gain and wideband patch antenna is used for UMTS band in this study. In the designed antenna, air is used instead of dielectric material between the ground plane and the radiation part. It is shown that, by designing the impedance matching part in a different geometry, broadband antennas can be designed and developed without changing the gain too much. It is seen that such antennas have a wide range of application areas. The operation bandwidth of the designed antenna is approximately 1750-2550 MHz. The operation bandwidth covers UMTS band. The antenna has a rectangular conductive part between feed connector and radiating element. There are conductive trapezoidal parasitic elements on both sides of the rectangular part. A thin air gap between trapezoidal parts and radiating element that helps impedance matching. The antenna is designed, analyzed and simulated by using commonly used commercial EM simulation software package, HFSS. Detailed configuration, simulated return loss, radiation pattern and gain plot of the antenna are presented.