TITLE:
On the Design of Slot Cut Circularly Polarized Circular Microstrip Antennas
AUTHORS:
Amit A. Deshmukh, Saleha A. Shaikh, Ami A. Desai, Kshitij A. Lele, Sudesh Agrawal
KEYWORDS:
Circular Microstrip Antenna, Circular Polarization, Rectangular Slot, Resonant Length Formulation
JOURNAL NAME:
Wireless Engineering and Technology,
Vol.7 No.1,
January
28,
2016
ABSTRACT: Circularly polarized microstrip antenna is frequently realized by cutting
the slot inside the patch and feeding it along the diagonal axis. In the
reported literature, procedure to design them at any given frequency is not
available. In proposed work, circularly polarized slot cut circular microstrip
antenna at 900 MHz is discussed. By studying the surface current distributions
at two orthogonal modes, formulations in their resonant length are proposed.
The frequencies calculated using them closely agree with simulated results.
Using proposed formulation, procedure to design circular polarized antennas at
different frequencies is presented that gives circular polarized response. Thus,
proposed work will be helpful to design similar circular polarized circular microstrip
antenna at any desired frequency.