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A coplanar waveguide-fed printed slot antenna for dual-frequency operation

We propose a new design of a dual-frequency CPW-fed dual slot loop antenna. In the proposed design, the frequency ratios of the obtained dual-frequency operation can be easily controlled by varying the perimeters of the two different slot loop antennas. Also, antenna designs and typical experimental results of good control of the frequency ratio between the two operating frequencies are shown and discussed.