| 摘要 |
A signal coupling apparatus includes a coaxial type signal coupling element and a structure for fixing the element at a predetermined position on a circuit board. The structure includes a supporting member having a conductive cover part, longitudinal direction facing parts integrated with the cover part, and grounding parts integrated with both lateral sides of the cover part. The cover part is fitted on an external conductor of the element, and the grounding parts are in contact with grounding patterns on the board when the element is disposed at the predetermined position. Fixing elements fix the grounding parts to the board. The facing parts prevent an insulator surrounded by the external conductor from thermally expanding in the longitudinal direction of a central conductor surrounded by the insulator in the element while the element operates. A transmitter includes the above described circuit board and signal coupling apparatus.
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