Circular Waveguide TM11-Mode Resonators and Their Application to Polarization-Preserving Bandpass and Quasi-Highpass Filters
نویسندگان
چکیده
Circular waveguide filters with improved performance are presented. They are based on TM11-mode resonators which permit the filter to be smaller than standard TE11-mode filters, preserve all polarizations due to rotational symmetry, and are flexible with respect to the design of bandpass or highpass filters. In order to demonstrate their advantages, they are compared to a standard TE11-mode design. Design guidelines are presented, and performances of resulting bandpass and quasi-highpass filters are shown. The coupled-integral equation technique (CIET) is used as the main computational tool. All provisional and final designs are verified by comparison with the commercially available software package μWave Wizard.
منابع مشابه
Novel designs of polarization-preserving circular waveguide filters
Novel designs of circular waveguide components for lowpass, highpass, bandpass, and bandstop applications are presented. The filters are formed by cascaded TM11-mode resonator sections which share a common axis, thus preserving the polarizations of input signals due to rotational symmetry. Moreover, the filters are smaller than standard TE11-mode bandpass filters. Basic design considerations ar...
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