Theoretical and Experimental Comparison Results of Dual-Channel 3D Quasi-Optical Network System between Frequency Selective Surface and Wire Grid Polarizer

Figure 13

The far-field radiation pattern results of 324 GHz channel.

(a) Far-field planar amplitude by near-to-far-field transformation. From left to right are air, FSS, polarizer

(b) FSS: the amplitude and phase of far-field by simulation, near-to-far-field transformation, and aperture field integral

(c) Polarizer: the amplitude and phase of far-field by simulation, near-to-far-field transformation, and aperture field integral

(d) The direct measurement results of far-field radiation pattern in the tri-CATR. The left is amplitude and the right is phase