Abstract: In this paper, we demonstrated a band pass filter based on NXN square photonic crystal ring resonator (PCRR) with 45 degrees bend in an ordinary waveguide. According to the numerical ...

Abstract: This Waveguides transport high-frequency microwave signals efficiently with no major loss in signal power. A waveguide with a circular/rectangular cross-section operates on different ...

For the system noise temperature calibration of the K/Q/W triple-band cryogenic receiver on Tianma Radio Telescope (TMRT), a design of W-band eight-hole waveguide directional coupler is proposed in ...