Single-feed triple-frequency rectangular microstrip patch antenna with pairs of spur-lines

摘要

A rectangular microstrip patch antenna with triple resonant frequencies is presented. Two pairs of spur-lines are embedded in the non-radiating edges of the patch antenna to excite extra resonant frequencies. The placement of spur-lines is made to achieve good radiation efficiency and impedance matching at all three resonant frequencies. Good agreement between the simulations and measurements is obtained.