Small slot-coupled circularly-polarised microstrip antenna withmodified cross-slot and bent tuning-stub |
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Authors: | Kin-Lu Wong Ming-Huang Chen |
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Affiliation: | Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung; |
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Abstract: | A novel design of small slot-coupled circularly-polarised circular microstrip antenna with a modified cross-slot cut in the patch and a bent tuning-stub aligned along the patch boundary is proposed and experimentally studied. Results show that, for fixed circular polarisation (CP) operation, the antenna proposed can have an antenna size reduction of ~80%, as compared to a regular-size CP design. The significant size reduction of the proposed antenna is due to the novel modified cross-slot cut in the patch, and CP operation is obtained using a bent tuning-stub incorporating a properly oriented coupling-slot in the ground plane of the microstrip feed line |
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