Premium
Broadband circularly polarized dipole look‐like F‐shaped antenna with symmetrically inverted F‐shaped modified ground plane
Author(s) -
Kumar Yatendra,
Gangwar Ravi Kumar,
Kanaujia Binod Kumar
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31114
Subject(s) - ground plane , beamwidth , optics , axial ratio , physics , radiation pattern , broadband , dipole , microstrip , dipole antenna , antenna (radio) , circular polarization , telecommunications , engineering , quantum mechanics
A microstrip antenna consists of F‐shaped radiating structure with symmetrical F‐shaped modified or defected ground plane look‐like dipole antenna featured for broad axial ratio bandwidth (ARBW) is presented. Modified/defected ground plane comprises of an optimized rectangular ground plane united with symmetrically inverted F‐shaped structure printed at the bottom side of substrate. Furthermore, a narrow rectangular slit was imprinted from the modified ground plane to obtain broad ARBW. Proposed antenna optimized, fabricated, and experimentally examined. Measured results confirm that it can yield an fractional impedance bandwidth of approximately ≈37.5% and a 3‐dB ARBW of ≈31.7%. The measured gain range from 2 dB to 4 dB within the 3‐dB ARBW with maximum gain of 4 dBic. The cross polar rejection was observed better than 15 dB alongwith wide −3 dB beamwidth of 85°.