Waveguide to microstrip line transition having a conductive...

Details Waveguide to microstrip line transition having a conductive... Waveguide to microstrip line transition having a conductive...

2005-04-20

2010-06-29

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S033000

Reexamination Certificate

active

07746191

ABSTRACT:
The present invention relates to an element of transition between a waveguide and a transition line on a substrate. The element of transition comprises a securing flange on the substrate, the flange being dimensioned so that at least, in the direction microstrip line, the width d of the flange is selected in such a manner as to shift the resonant modes away from the useful band. The invention is used particularly for circuits using SMD techniques at millimeter frequencies.

REFERENCES:
patent: 2897461 (1959-07-01), Ashbaugh et al.
patent: 4562416 (1985-12-01), Sedivec
patent: 5528074 (1996-06-01), Goto et al.
patent: 5912598 (1999-06-01), Stones et al.
patent: 6967543 (2005-11-01), Ammar
patent: 2001267814 (2001-09-01), None
Frank J. Villegas, D. Ian Stones and H. Allred Hung, A Novel Waveguide-to-Microstrip Transition for Millimeter-Wave Module Applications, XP-000793256. IEEE Transactions on Microwave Theory and Techniques, vol. 47, No. 1, Jan. 1999, Search Report.

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