Abstract
The manuscript represents an innovative frequency reconfigurable metamaterial-based microstrip patch antenna. The proposed structure provides frequency tunability for multiple bands by using a PIN diode as a switch. The performance of the proposed antenna structure is simulated, fabricate, and compared for copper and liquid (water-sea) based split-ring resonator (SRR). The tooth is added to the outer of the split-ring resonator for gain enhancement and better frequency tunability. Frequency tunability is achieved by connecting the patch antenna with a PIN diode that reduces the size of the antenna. Five switching modes (all switch off, one switch on, two switches on, three switch on and all switch off) of the proposed antenna structure is presented and their reflectance response (s11), the number of bands, bandwidth, directivity, and total gain is compared for copper and liquid (water-sea) structure with and without a tooth. Results of Fabricated structure and simulated also compared. Frequency tunability is observed for a range of 3 GHz to 9 GHz. The proposed antenna is useful for a weather forecast, satellite communication, and raw satellite feed and many more.
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