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The high gain planar antenna excited by the ultra low profile inverted L antenna is proposed and analyzed numerically. The strong electromagnetic field between two conducting planes is excited by the inverted L antenna. The design frequency is 2.45 GHz. The size of proposed antenna is 40 mm by 60 mm by 9 mm (0.327 λ by 0.49 λ by 0.074 λ). The return loss bandwidth larger than 10 dB is 4.16 % and the...
The ultra low profile circular polarized antenna on the rectangular conducting plane has been proposed and numerically analyzed. Although this antenna has a simple structure and a small size, it has good axial ratio. This antenna is promising as the reader antenna of a portable RFID system.
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