Novel designs of polarization-preserving circular waveguide filters

作者：Bornemann Jens^*; Yu Seng Yong

来源：International Journal of Microwave and Wireless Technologies, 2010, 2(6): 531-536.

DOI：10.1017/S1759078710000760

• Circular waveguide filters
• Lowpass filters
• Highpass filters
• Bandpass filters
• Bandstop filters
• Computer-aided design
• Circular waveguide modes
• Polarization

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 are discussed with respect to the connection of TM11-mode resonators through circular irises. Design principles for all four filter types are presented and their performances computed by the coupled-integral equation technique (CIET). All filter performances are verified by the commercially available software package mu Wave Wizard, and structural dimensions are provided.

• 出版日期2010-12