Abdullah Al Noman Ovi
A novel design of miniaturized dual band microstrip antenna has been proposed with necessary theoretical discussion. The single layer probe feed antenna has only 23 mm × 23 mm patch. The antennas has dual band characteristics for 3G mobile, WLAN, Wi-Fi and various other applications. The bandwidth performance of each small antenna is quite satisfactory in S-band (2 GHz-4 GHz) range. Moreover, high directivity is a primary requirement for modern satellite based communication systems. The directivities of proposed two antennas are above 6 dB (at broadside) at both bands. The frequency ratio and frequency shift of the resonant frequency can be controlled by cutting new slits and changing slit lengths. These all are discussed here from theoretical point of view and simulation based results.
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