The single-feed antenna is a square patch, with truncated corners to achieve circular polarization ... their performance exhibits strong cross polarization levels and non-uniform patterns over the ...

A UHF reader antenna that emits radio waves in a circular pattern. These antennas are used in situations where the orientation of the tag to the reader cannot be controlled. Since the waves are moving ...

Water would stream out in a narrow plane. A circular-polarized antenna, on the other hand, is designed to emit energy in a conical pattern. Energy travels in a corkscrew out from the reader antenna, ...

Controlled radiation pattern antenna (CRPA) technique is considered to be the best ... conceive, realize, and evaluate a circular array composed of seven elementary patch antennas (see Figure 1).