Coupled Rectangular Waveguide Resonator Filter Using 3D-HFSS Based Admittance Extraction

This research work presents an accurate method of dimensioning geometric parameters of a microwave multi-ports filter design by 3D-HFSS (High Frequency Structure Simulator) simulations based on admittance (Y) matrix extraction technique. The filter's resonant frequency, coupling coefficients and external quality factor can be directly tuned via the multiport Y matrix in a way it achieves the target filter synthesis datasheet set before. A four pole Chebyshev coaxial bandpass filter design is developed showing a good electromagnetic response that presents the availability of the adjustment technique which can be easily adapted to other filter structures.