Rectangular Ring Frequency Reconfigurable Micro Strip Antenna - RRFRMSA for Frequency Hopping Wireless Networks and SDR

Abstract

A frequency reconfigurable micro strip antenna using a feed line for frequency agile applications is demonstrated in this paper. This antenna consists of two rectangular strips separated by rectangular slots Four RF switches (PIN Diodes) are placed in the rectangular ring slot to bridge the gap and to switch the frequency between WLAN bands resonating at 5.2 GHz and 5.8 GHz. PIN diodes are used to switch the frequency among WLAN bands. When compared to traditional micro strip antenna, the proposed antenna provides a size reduction of 8% at 5.2 GHz, and 60% at 5.8 GHz. The simulated return loss, and radiation patterns are presented and compared with the experimental data. This antenna can be used for modern wireless networks to improve spectrum efficiency.