Sharma, P.C. and Gupta, K.C. (1983) Analysis and Optimized Design of Single Feed Circularly Polarized Microstrip Antennas. IEEE Trans Antennas and Propagation, 31, 949-955.
http://dx.doi.org/10.1109/TAP.1983.1143162

has been cited by the following article:

• 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.