And through the comparisons of results, we analyzed the effects of sampling plane to far field, demonstrated the applicability of PWS theory to high and low directivity antennas , so that we can further researchthe error analysis and correction.

With a two dimensional problem as an example, the effect of scattering from wall of anechoic chamber on planar near field measurements with ultra low sidelobe antennas is studied by means of computer simulation based on theory of plane wave spectrum expansion and approximation in geometrical optics.

Group theory is introduced into the calculation of photonic band gap with the plane wave expansion method, and improved calculation formulae are derived.

An idea is presented to calculate the MMW PD in the area of the biological sample using the electric field measured in the scanning plane based on the plane wave expansion technique.

Acoustic band gap properties of the forward Brillouin scattering phenomenon in photonic crystal fibers are simulated by using plane wave expansion method.

In this paper,the band structures of the two-dimensional phononic crystals consisting of(elliptic) cylinders were calculated by using the plane wave expansion method.

The photonic bandgaps of 2-D photonic crystals with graphite lattice were simulated with plane wave expansion method.

Based on plane wave expansion method, the influence of factors such as lattice structure, dielectric constant ratio and filling ratio on three-dimensional photonic crystals with fcc, diamond and woodpile structures is studied.

The theory study of a plane-wave expansion method based on the effective medium technique in the two-dimensional photonic crystal;

The plane-wave expansion method is used to calculate the band structure of a two-dimensional photonic crystal with hexagonal lattice,and the optium structural parameters of photonic crystals with the largest complete bandgap are obtained.

By the plane-wave expansion method,the acoustic elastic band structures of two-(dimensional) phononic crystal composed of square or triangle array of tungsten square rods embedded in epoxy,and the influence of rods rotating on the acoustic band structures were studied.

The calculated results show that that the SSTH heterostucture may produce guide modes in absolute photonic band gap(PBG) when introducing relatively longitudinal gliding or transverse displacement of the sub-lattices along the interface of the heterostructure.

By using the plane wave expansion method combined with the supercell technique, we investigate the band structures of the heterostructure composed of square cylinders in square lattice and hexagon cylinders in triangular lattice (SSTH heterostucture), and the guide modes at the interface of the heterostructure.