Waveguide substrate having two slit-like couplings and...

Details Waveguide substrate having two slit-like couplings and... Waveguide substrate having two slit-like couplings and...

2005-09-12

2008-10-21

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S034000

Reexamination Certificate

active

07439822

ABSTRACT:
A waveguide substrate has improved signal conversion characteristic to a cavity waveguide at a post wall waveguide less suffering a manufacturing error occurring at a portion leading the signal to the cavity waveguide. The waveguide substrate has a converting part provided at a position shutting off an end of the waveguide, waveguide shutting-off conducting posts penetrating a dielectric plate to electrically conduct between conductor layers on the both surfaces of the dielectric plate, and two slit-like regions, in which no conductor layer is formed, arranged in parallel in the upper stream and the lower stream with respect to a direction of propagation of a high-frequency signal from the waveguide toward the waveguide shutting-off conducting posts.

REFERENCES:
patent: 4562416 (1985-12-01), Sedivec
patent: 5414394 (1995-05-01), Gamand et al.
patent: 2004/0145426 (2004-07-01), Wu et al.
patent: 11-74702 (1999-03-01), None
patent: 2000-151225 (2000-05-01), None
patent: 2003-289201 (2003-10-01), None
patent: 2004-015404 (2004-01-01), None

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