A Multiband Microstrip Patch Antenna with Non Contact Feeding Technique

The major demand for wireless communication is lightweight, small in size, and cost-effective. In this paper, a multi-band and low-profile antenna is designed. This antenna is polarized for multiband in the S-band and C band range with less than −10 dB return loss for wireless communication. The maximum gain of 5.8 dBi and return loss of −24dB are obtained for 3.5 GHz frequency. This antenna consists of one slotted ground between two dielectric substrates and a patch of hybrid structures with a Y-shaped feed line. The Dielectric material is a longer used for the substrate. The relative permittivity of both dielectric εr is 3.38. These frequencies are resonated due to the hybrid shape of patches. Non-contact feeding (Aperture coupled) is used to enhance the antenna performances such as bandwidth, gain, return loss, and VSWR. Desirable radiation characteristics are obtained over the frequency band. The structure of this antenna is designed and analyzed all performances on High-frequency Structural Simulator version 17.