Circularly Polarised Hexagonal Patch Antenna With Polygonal Slot for RFID Applications | Zendy

Prakash K.C | Zendy; Vinesh P. V | Zendy; R. Vivek | Zendy; Mohammad Ameen | Zendy; K. Vasudevan | Zendy

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Circularly Polarised Hexagonal Patch Antenna With Polygonal Slot for RFID Applications

Author(s) -

Prakash K.C,

Vinesh P. V,

R. Vivek,

Mohammad Ameen,

K. Vasudevan

Publication year - 2016

Publication title -

journal of communications software and systems

Language(s) - English

Resource type - Journals

eISSN - 1846-6079

pISSN - 1845-6421

DOI - 10.24138/jcomss.v12i2.84

Subject(s) - axial ratio , patch antenna , microstrip antenna , return loss , optics , hexagonal crystal system , materials science , bandwidth (computing) , radiation pattern , circular polarization , slot antenna , dielectric , center frequency , coaxial antenna , microstrip , antenna (radio) , physics , optoelectronics , computer science , telecommunications , band pass filter , chemistry , crystallography

A compact single feed circularly polarized microstrip patch antenna for RFID applications is proposed. Antenna geometry includes a regular hexagon shaped patch with a polygonal slot embedded at the centre. The slot accounts for circular polarization and an area reduction of 22.5 %. It is fabricated on FR4 substrate with dielectric constant 4.4 and size 50 mm x 50 mm x 1.6 mm. The measured results include 10dB impedance bandwidth of 5.5 % at the center frequency of 2.42 GHz, a return loss of 32 dB, minimum axial ratio of 1.82 dB, axial ratio bandwidth of 7.5%, gain of 4.9 dBi with a broadside radiation characteristic for the RHCP antenna. These results are well in tune with the simulated results and the proposed design is suitable for RFID reader antenna applications.

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