Dr. M. Veereshappa
Design and development of slotted rectangular microstrip antenna is proposed for hepta band operation with notch-band property. Two rectangular slots are placed on the radiating patch from its vertical edges for providing different surface current paths so as to produce six resonant modes. Both slots are kept at a distance of 0.2 cm from the non radiating edges of the patch. The antenna enhances the bandwidth of 4.81 % with a gain of 2.77 dB. Further the antenna is modified by increasing the width of the slots gives seven resonant modes and it enhances the bandwidth of 11.58 % in BW7 with peak gain of 3.56 dB. The antenna also rejects WLAN frequency interference between BW7 and BW8. Both antennas shows broad side radiation characteristics. The proposed antenna may find application in microwave communication systems.
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