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This paper uses HFSS (High Frequency Structure Simulator) by Ansoft Crop. to simulate an iris filter with center frequency of 110GHz and with relative bandwidth of 10%. The simulation results show that the center frequency is 109.74GHz and the 3dB bandwidth is 10.01%. Over the entire passband, the return loss is better than 13.56dB. The filter presents a steep cutoff, the insertion loss at the frequency...
The letter presents a fourth-harmonic mixer based on planar schottky diode working at 330–500GHz. The result of simulation predicts that conversion loses well below 14dB from 369GHz to 477GHz with 6 dBm of local oscillator power. Therefore, the good performance of mixers in wide bandwidth and low conversion loss provides designers with a better choice.
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