Externally adjustable impedance transformer

Details Externally adjustable impedance transformer Externally adjustable impedance transformer

2005-04-26

2005-04-26

Enad, Elvin (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S205000, C336S206000, C324S234000, C324S236000, C324S242000, C324S262000

Reexamination Certificate

active

06885277

ABSTRACT:
An externally adjustable RF impedance matching mechanism comprises an upper lid and a base containing a circuit element board therebetween. One or more than one precise adjustment device for adjusting impedance value are provided under the upper lid. Impedance adjustment is carried out by manually turning setting screws associated with the aid of spring force. Heat conductive material is coated between the circuit board and the base so that the device is able to operated at a high power. The expensive material such as ceramic is used in forming the coil board only so that material and the production cost are low.

REFERENCES:
patent: 5262722 (1993-11-01), Hedengren et al.
patent: 05135968 (1993-06-01), None

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