Non-Radiating Edge Gap Coupled Capsule-Shaped and Nose-Shaped Microstrip Antennas for 3G Applications

Abstract

Abstract-Two novel configurations for increasing the impedance bandwidth of the microstrip patch antennas have been proposed for operating in the 3G mobile communication range. In these configurations, additional resonators of semicircular shape rather than conventional rectangle are gap coupled to the non-radiating edges of the fed rectangular patch. A comparative study is done between the antennas of the same size with two semicircular parasitic patches and an antenna having a combination of semi-circular and rectangular parasitic patches. Compared to the available broadband antennas, the proposed antenna structure gives a better bandwidth.Index Terms-Gap coupling, microstrip antennas, 3G, VSWR.

Compact Coplanar Waveguide Antenna Using Arm Patch for Software Defined Radio

“…The most often utilized strategies for enhancing the operating frequency of antennas include the employment of parasitic patches in singlelayer and multilayer designs [31], the use of foam or air substrates [32], [33], and the addition of slots in the patch, including a U-patch antenna [34]. On the other hand, using a parasitic patch will change the dimension of the PCB antenna [35]. Furthermore, increasing the thickness of the substrate or using a multilayer produces a more substantial surface wave, which reduces efficiency.…”