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Research Article Open Access
This paper deals with a technique for designing a reconfigurable multi-slot antennas by loading a slot on patch with a lumped capacitor (or varactor) located on the edges at slot. With a fixed capacitor location along the slot decreases the capacitance which results in increase the resonant frequency of the slot antenna. However, the changes in the resonant frequencies are significantly different for the resonances and hence, this antenna with considerable frequency ratio tuning range can be obtained. Based on this technique, an electronically tunable multi slot antenna with a frequency of 2.4 GHz is designed and using a capacitance of 10 pF. This design has an advantage of size reduction up to 71.46% for the resonant frequency compared to conventional rectangular patch antenna.