A Study on Miniaturized Microstrip Antenna for IoTs Sensor Applications

Abstract

Abstract. A 2.4 GHz microstrip antenna with compact structure for IoTs applications is presented. A parallel resonant capacitor is introduced to miniaturize the size of 2.4 GHz antenna, and to expand the frequency bandwidth, a quasi-dipole is designed on the opposite layer of the L-shaped microstrip antenna. Moreover, the antenna gain is also increased by using this method. In order to examine the feasibility of the proposed structure, a new type of 2.4 GHz microstrip antenna is designed, fabricated, and measured. The experimental results of the fabricated circuit show broad bandwidth of 122MHz and a relative high antenna gain of 2.42 dBi.