Design of a Broadband Microstrip Quasi-Yagi Antenna with Split-Ring Resonators

A compact broadband microstrip quasi-Yagi antenna for medium and low communication frequencies is proposed in this paper. The antenna mainly consists of an active element, a C-shape reflector, two directors and four Split-Ring Resonators. The parameters of the antenna are optimized by HFSS. The simulation results show that the operating bandwidth of this antenna is 1.73GHz~4.24GHz when the return loss of the antenna is less than -10dB, the relative bandwidth is 84% and the maximum gain reaches 5.08 dB. The antenna has the characteristics of small size, easy integration, wide band and high gain, and it is suitable for wireless communication applications.