초록 ▼

A durable, broad-band low insertion loss RF feedthrough is formed of a straight conductor (5) centrally supported by, hermetically sealed to and axially extending through the center of a strong, rigid, impervious ceramic disk (3). The ceramic disk is hermetically sealed, directly or indirectly, to t

A durable, broad-band low insertion loss RF feedthrough is formed of a straight conductor (5) centrally supported by, hermetically sealed to and axially extending through the center of a strong, rigid, impervious ceramic disk (3). The ceramic disk is hermetically sealed, directly or indirectly, to the metal barrier (11) through which the feedthrough is to propagate RF energy. The new ferrule and ferrule-less ceramic metal RF feedthroughs avoid the use of glass, conventional in existing feedthroughs. The novel feedthrough serves as the principal element of a microwave microstrip line to waveguide transition.

대표청구항 ▼

[ What is claimed is:] [12.] In an RF feedthrough containing a hollow cylindrical metal wall, an elongate metal pin and means connected between said cylindrical metal wall and said pin for supporting said pin coaxially within said cylindrical metal wall, the improvement wherein said means comprises:

[ What is claimed is:] [12.] In an RF feedthrough containing a hollow cylindrical metal wall, an elongate metal pin and means connected between said cylindrical metal wall and said pin for supporting said pin coaxially within said cylindrical metal wall, the improvement wherein said means comprises: at least one disk of strong, rigid, non-porous dielectric material; said disk comprising a washer-shaped geometry with a central cylindrical passage; said pin extending through said central cylindrical passage in said disk; and said disk being hermetically sealed to both said cylindrical metal wall and said pin; and further comprising: microwave launcher means integrally attached to an end of said pin for coupling microwave energy to a waveguide said microwave launcher means comprising a "T"-shaped geometry.