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 non-directional antenna installation, if the pattern was never measured on a test range or confirmed by aerial measurements, will often have a coverage area far different than shown on a coverage ...

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 ...

A circular-polarized antenna is used to read tags in random orientation ... if the minor and major axes are the same—then the energy is emitted in a circular pattern. As the minor axis grows shorter ...

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).