Abstract—This paper introduces the design of an enhanced gain compact circular antenna for personal communication systems (PCS). The antenna is designed to operate at 1.8GHz which shows an impedance bandwidth of 100MHz. The return loss and radiation characteristics of the proposed microstrip antenna are compared with that of the reference antenna, which is the conventional circular antenna. A gain enhancement of 3.8dB is achieved by vertically stacking a circular ring shaped parasitic element. The spacing between the driven patch and parasitic element (h) is optimized to maximize electromagnetic coupling between the two, which results in enhancement of the antenna gain. Parametric study of the proposed antenna is also carried out. The results are validated using two different structure simulation methods based EM simulators viz Finite Integration Technique (FIT) based CST and Method of Moment (MOM) based IE3D. A good agreement is obtained in the results from both techniques which verifies the antenna design and strongly recommend the proposed structure for commercial applications.
Index Terms—FIT, Gain, MOM, Parasitic radiator, PCS.
Pramendra Tilanthe is with the Electronics and Communication Engineering Department, TRUBA College of Engineering and Technology, Indore, Senior member IEEE， India. (phone: +91-731-3240041-42; fax:+91-731-2306687; e-mail: pramendra20@ yahoo.com).
Dr. P. C. Sharma, is with SD Bansal College of Technology, Indore, Senior member IEEE, India. (e-mail: pc_sharma47@yahoo.com).
Dr. T. K. Bandopadhyay is with the Bansal Institute of Science and Technology, Senior member IEEE, Bhopal (e-mail:tushar_bando@hotmail.com).
Cite: Pramendra Tilanthe, P. C. Sharma, and T. K. Bandopadhyay, "Gain Enhancement of Circular Microstrip Antenna for Personal Communication Systems," International Journal of Engineering and Technology vol. 3, no. 2, pp. 175-178, 2011.
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