Harmonic Suppression Rectangular Patch Antenna with Circularly Polarized

Nurzaimah Zainol, Zahriladha Zakaria, Maisarah Abu, Mawarni Mohamed Yunus

Abstract


The rectangular patch antenna with proximity coupling at 2.45 GHz is designed and printed on FR-4 substrate with dielectric constant 4.3 and loss tangent 0.019. The overall size of proposed antenna gives 36 % reduction of substrate area as compared to conventional designs. The symmetrical arm of inverted U-stub and U-slot embedded on the transmission feed line suppress harmonic signal effectively at second and third order with minimum reflection coefficients of –0.51 dB and -2.28 dB respectively while circularly polarization was obtained by corner truncated and U-slot on the patch element. The return loss is -23.95 dB at fundamental modes with gain 4.61 dB and axial ratio of 1.48 dB.


Keywords


Circularly polarization (CP), harmonic rejection, microstrip patch antenna, rectenna, stub.

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DOI: http://dx.doi.org/10.12928/telkomnika.v14i2.2394

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