Abstract

This paper compares the different parameters for differently configured single substrate circular patch and double substrate square patch microstrip antenna. The proposed antenna 1 is fed by proximity coupled feed whereas the proposed antenna 2 is single fed to excite the antenna. Copper clad substrate is used in this design. The circular polarization is achieved by the proposed antennas without 90° hybrid coupler. The proposed antennas are applicable for L and S band applications (1. 26GHz and 2. 56/2. 65 GHz respectively). The gain of both of the antenna are approximately same. This comparison will provide the technique for miniaturization using single substrate.

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