M. Veereshappa and Dr. S.N Mulgi
A novel design and development of unipolar rectangular microstrip antenna is proposed for virtual size reduction and penta-band operation. The antenna structure consisting of pentagon shaped slot with dual circular parasitic strip etched on the centre axis of the radiating patch. The antenna gives a maximum virtual size reduction of 62 % and penta it operates in the frequency range of 1 to 16 GHz. The proposed antenna is simple in its structure and use low cost substrate material. The antenna gives ominidirectional radiation characteristics with peak gain of 11.71 dB. The proposed antenna may find application in microwave communication systems