TITLE:
Patch Antenna Miniaturization Using CSRR
AUTHORS:
Varindra Kumar
KEYWORDS:
DNG Metamaterial, CSRR, 5 GHz, Patch, Spice, Planar, Bend
JOURNAL NAME:
Open Journal of Antennas and Propagation,
Vol.5 No.3,
September
27,
2017
ABSTRACT: A novel metamaterial structure has been proposed for Electromagnetic Compatibility
(EMC) applications. A patch antenna with dimension of 18 mm ×
13.9 mm and resonating at 5 GHz has been designed and the effect of Double
Negative (DNG) metamaterial loading for the patch size reduction as well as a
lowering in resonance frequency for the fixed size patch antenna has been
proposed. A size reduction of 72.5% in the patch antenna has been obtained
with the loading of this metamaterial structure and the effect of loading the
metamaterial shows that without reducing the size, the patch antenna can
work at 3.7 GHz resonance, providing a lowering in resonance frequency by
26%. The metamaterial structure consists of two concentric loops with an
outer radius of 3.1 mm. The width of the ring is 1.0 mm and the split is 0.5
mm and has been designed over a 1.57 mm thick Fr4 substrate. The bending
effect of the patch antenna with and without metamaterial loading and its
comparison with the planar patch antenna has been also shown here. The
metamaterial structure has shown its resonance at 5 GHz and its permittivity
and permeability behavior over the desired frequency range has been plotted.
The simulation of traditional patch antenna and patch antenna over metamaterial
has been compared for its return loss, VSWR, gain and efficiency. Finally,
a spice circuit for the S parameter of the metamaterial, patch antenna and
patch antenna loaded with metamaterial has been obtained using Matlab and
ADS for its equivalence to 3D field solver and its comparison has been plotted
for its verification.