Planar Archimedean antenna has some advantages as wideband,small volume and good performance in circularly polarizing,so it has broad appliance prosperity.

Survey and progress in circular polarization technology of microstrip antennas;

Single-feed dual-mode square microstrip antenna and realization of circular polarization;

A circular polarization microstrip antenna with the shape of polygonal;

The paper takes the circular polarization formed from rectangular microstrip antennas as the research object, using plane phase relation, infers theoretically the track equation of its feeding spot, draws its track graph by programming , and the use observe its curve by the simulation of .

In this paper, the transfer matrix of circular polarization phase shifter is derived through coupled wave theory, transfer characteristics of elliptically polarized wave, circularly polarized wave, linear polarized wave are considered.

This paper states the application of the circular polarizer in Marine Radars, analyses the defect of the approximative formula used in the design of the circular polarizer and presents a method of modifying the approximative formula.

To reduce the size of the waveguide feed system in the Ka band,a study is made of the method for achieving a compact circular polarizer with a dielectric septum inserted in circular waveguide operating in dual band.

Waveguide circular polarizer using adjustable metal screws is designed for a project that studies ellipsometry and its device at microwave frequencies.

The design consideration of circularly polarized LPD antennas;

Design and implementation of a novel miniaturized circularly polarized GPS microstrip antenna

The paper first gives a simple explanation of the principle of circularly polarized microstrip antenna.