High Gain and Wide Bandwidth Fabry-Perot Frequency-Reconfigurable Antenna for Multiple LTE Radio Wireless Communication

This paper presents a frequency reconfigurable antenna with an improved gain performance operating in 1.7-2.5 GHz band for Multiple LTE Radio Wireless Communication applications. The proposed antenna is composed of a continuously tunable frequency reconfigurable patch antenna (RPA) positioned in a Fabry-Perot (FP) cavity which is formed by a Partially Selective Surface (PRS) and a ground plane. The two-layer gradient PRS is designed to achieve wideband phase compensation. The ground is an Artificial Magnetic Conductor (AMC) which is optimized for gain enhancement at the lower frequencies. The results show that the proposed FP-RPA can produce a realized gain enhancement of between 4-8dB compared with the source RA within the operating bandwidth. Moreover, the 3-dB gain bandwidths are improved to about 31% in comparison with the 19.8% and 23.3% of the sole source RA and the antenna with conventional uniform PRS, respectively. Measurement shows that the effective bandwidth of the proposed FP-RPA is 1. 83-2.5 GHz, which corresponds to 30.9% at the center frequency of2.16 GHz, and the maximum realized gain of 8.2 dBi is achieved.