Abstract

AbstractA compact Micro-strip patch antenna is designed for wideband applications in the frequency range of 6-22 GHz covering standard microwave frequency bands X (8–12 GHz) and Ku (12–18 GHz). The proposed structure is fabricated on FR-4 (εr = 4.4) substrate with a thickness of 0.8 mm has an overall volume of 180 mm3 on a partial ground plane. The proposed structure is resonating at 11 GHz with a minimum return loss of −21 dB shows a better impedance matching (S11 ≤10 dBi). The results show that the antenna covers the frequency spectrum of 6.5–22.5 GHz with a −10 dB return loss, maximum gain of 2.7 dBi and has Efficiency of 93%. The defected ground structure (DGS) along with microstrip line feed results in a compact wide band patch antenna. The proposed structure is simulated using HFSS software and the simulation results are in good agreement with the measured results. Impedance bandwidth has been enhanced by utilizing a partial ground plane of 6 × 15 mm2 compared to conventional MPA, due to which a single antenna may be useful for multi functions.KeywordsDGSKu bandMicrostrip Line FeedX band

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