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The design of a printed slot antenna with dual‐band circular polarization (CP) characteristic is presented. The proposed antenna is excited by an L‐shaped strip with a taper end, connected in series to a microstrip‐line‐fed located along the diagonal line of the square‐slot. Wide impedance and 3 dB axial‐ratio bandwidth (CP bandwidth) are measured and the proposed design is suitable for 802.11 a/b/g and WCDMA operations.
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Tseng et al. (2008) studied this question.
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