A Low Profile Waveguide Transmit Reject Bandpass Filter for Ku-Band VSAT Transceivers Subtitle as needed

In this paper, a transmit reject filter (TRF) is designed and simulated by utilization of T-shape units and inductor plates. Since the designed filter is low profile, it can be used in the transceiver of the Ku-band very small aperture terminal (VSAT). The equivalent circuit of the filter with equal ripple response is simulated and optimized in ADS, and its frequency response is given. By adding some inductor plates to the T-shape structure, we are able to improve the lower stop band of the frequency response. By adding two extra parts to its front and end, the structure is compatible for connection to the standard WR۷۵ waveguide. Moreover, analytical equations are given for calculating the initial dimension of the obstacles in the waveguide. Finally, after optimization of the structure, the desirable frequency response is achieved. It is also shown that the calculated values are closely near-optimal.