Analysis and Design of Rectangular Micro-Strip Patch Antennas for (RFID) Applications Using HFSS 13.0

Abstract

Micro-strip patch and slot antennas are getting becoming more likable and popular for practice in wireless implementations such as RFID applications especially in the UHF band thanks to its low-profile structure. In this paper, rectangular patch antenna (RPA) with two slots has been designed and simulated to be suitable for RFID applications at operating frequency 1.85GHz. The Circular Polarized CP antenna is a square patch type with the substrate of Roger Ro4350. The other factor of the design was a cut at two corners to enhance the antenna gain of a couple of reverse shortened angles with the value C as a length. Certainly, the role of L and C will affect considerably the operating frequency. This paper aims to show and find the best feed point area that has an exceptional antenna return loss (S11). S11 represents how much power is reflected from the antenna, and hence is known as the reflection coefficient S11 must be ? -10dB. The design and simulation results of (RPSA) has been done by high frequency simulation system (HFSS 13.0).