In this paper, the authors propose a newly designed MicroStrip Antennas (MSAs) for wireless application (CDMA systems). The designed single antenna E-shaped patch antenna. Two parallel slots are in-corporated into the patch of a microstrip antenna to expand it bandwidth, and designed antenna operates in the frequency range of 1.85 to 1.99GHz. The antenna is designed using air as a dielectric substrate between the ground plane and substrate patch antenna. IE3D is a full-wave electromagnetic simulator based on the Method of Moments (MoMs) technique. It has been widely used in the design of MICs, RFICs, patch antennas, wire antennas and other RF/wireless antennas.