Electrical transmission or interconnection systems – Anti-induction or coupling to other systems – Magnetic or electrostatic field control
Patent
1999-01-06
2000-08-08
Paladini, Albert W.
Electrical transmission or interconnection systems
Anti-induction or coupling to other systems
Magnetic or electrostatic field control
307129, 200305, 363 39, H03K 1704
Patent
active
061006068
ABSTRACT:
A miniaturized high frequency switching device is capable of giving an optimum over-all impedance over the length of a signal path while compensating for inevitable impedance variation seen in a particular segment of the signal path. The switching device includes a contact block having fixed contacts and a movable contact. The fixed contacts and the movable contact are surrounded by an electromagnetic shield which is supported on a conductor base to be grounded therethrough for isolating the current path from a surrounding electromagnetic field. The fixed contacts are formed respectively on one ends of terminal pins provided for electrical connection to an external load circuit operating on high frequency signals. The terminal pin extends through an insulation ring fitted in the conductor base so as to be electrically insulated therefrom and form the signal path flowing a high frequency current. An impedance compensating structure is provided in the contact block for differentiating a first impedance at a first segment of a limited length along the terminal pin from a second impedance inherent to a second segment immediately adjacent the first segment so as to give a target over-all impedance, which is between the first and second impedance, over the full length of the terminal pin.
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patent: 5757628 (1998-05-01), Kamata
Nakahata Atsushi
Okumura Shigeyuki
Taguchi Tomohiro
Matsushita Electric & Works Ltd.
Paladini Albert W.
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