Research Article

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

Table 1

The near-field measurement data of 183 GHz channel.

FilterCross-polarization levelBeam radius (ω) at D6 = 160 mmMeasurement consistency
SimulationMeasurementSimulationMeasurementTheoretical valueηsηv

FSS−22.05 dB−18.33 dB19.295 mm = 11.769λ18.765 mm = 11.447λ18.152 mm = 11.07λ98.9749%97.0155%
Polarizer−21.97 dB−18.82 dB18.715 mm = 11.416λ18.675 mm = 11.391λ98.7954%97.9952%
Copper plate−21.96 dB−18.07 dB18.899 mm = 11.528λ19.060 mm = 11.627λ99.0955%97.5476%
Aluminum plate−21.96 dB−17.76 dB19.095 mm = 11.648λ18.750 mm = 11.438λ100%100%