Polarization-preserving waveguide filter and transformer

Details Polarization-preserving waveguide filter and transformer Polarization-preserving waveguide filter and transformer

2007-05-15

2010-06-29

Tan, Vibol (Department: 2819)

Wave transmission lines and networks

Wave mode converters

C333S125000

Reexamination Certificate

active

07746190

ABSTRACT:
A microwave waveguide filter includes an input waveguide section, an output waveguide section, a plurality of resonator sections disposed between the input and output waveguide sections, and a plurality of coupling sections disposed on either side of each of the resonator sections. The input waveguide section, the resonator sections, and the output waveguide section have at least four fold symmetric quadruple ridge cross-sections and the coupling sections have at least four fold symmetric cross-sections.

REFERENCES:
patent: 3852748 (1974-12-01), Stark
patent: 4568894 (1986-02-01), Gannon et al.
patent: 4881051 (1989-11-01), Tang et al.
patent: 5382931 (1995-01-01), Piloto et al.
patent: 6097264 (2000-08-01), Vezmar
patent: 6282341 (2001-08-01), Digonnet et al.
patent: 6522215 (2003-02-01), Enokuma
patent: 6577207 (2003-06-01), Volman
patent: 6879226 (2005-04-01), Vigneron et al.
patent: 7321277 (2008-01-01), Broad et al.
F.M. Vanin et al., “Polarization-Preserving Quadruple-Ridge Waveguide Filter and Four-fold Symmetric Transformer”, IEEE MTT-S, International Microwave Symposium Digest, 2006, pp. 127-130, San Francisco, CA USA.
S. Amari et al., “Design of polarization-preserving circular waveguide filters with attenuation poles”, Microwave and Optical Technology Letters, Dec. 2001, pp. 334-336, vol. 31, No. 5, San Francisco, CA USA.
A.M.K Saad, “Novel lowpass harmonic filter for satellite application”, IEEE MTT-S International Microwave Symposium Digest, May 1984, pp. 292-294, vol. 84, San Francisco, CA USA.
Z.M. Liu et al., “An Extremely Wideband Ridge Waveguide Filter”, IEEE MTT-S International Microwave Symposium Digest, Jun. 2004, pp. 615-618, vol. 2, Fort Worth, TX USA.
Y. Rong et al., “Characteristic of Generalized Rectangular and Circular Ridge Waveguides”, IEEE Transaction Microwave Theory Techniques, Feb. 2000, pp. 258-265, vol. 48, No. 2.
F.M. Vanin et al., “Dimensional synthesis for wide-band waveguide filters and diplexers”, IEEE Transaction Microwave Theory and Techniques, Nov. 2004, pp. 2488-2495, vol. 52, No. 11.
Y.Rong et al., “LTCC Wide-Band Ridge-Waveguide Bandpass Filters”, IEEE Transaction on Microwave Theory and Techniques, Sep. 1999, pp. 1836-1840, vol. 47, No. 9.
E. Wollack, “A Full Waveguide Band Orthomode Junction,” NRAO, EDIR Memo Series, #303, 1996.
E.J. Wollack et al., “The Boifot Orthomode Junction,” NRAO, ALMA Memo Series, #425, May 2002.

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