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Miniaturization of Slot Antennas Using Slit and Strip Loading

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3 Author(s)
Ghosh, B. ; Dept. of Electron. & Electr. Commun. Eng, Indian Inst. of Technol., Kharagpur, India ; Haque, S.M. ; Mitra, D.

The design of a miniaturized slot antenna with slit loading fed by the CPW line is proposed. It is seen that the loading slits can be located only on the feed side without degradation in cross-pol performance, unlike the microstrip-fed case. This releases the ground plane area above the slot for accommodating electronic circuitry and effectively reduces the antenna size. In addition, the resonant frequency in this case is reduced by a further 4.60%, compared to the slits on both sides. Another topology of the miniaturized antenna is investigated with the slits replaced by strips of metallization on the reverse side of the substrate, which leaves the ground plane area completely free. A high reduction in the slot resonant frequency is also observed in this case, with a reflector being used to increase the forward radiation.

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Antennas and Propagation, IEEE Transactions on  (Volume:59 ,  Issue: 10 )