Wave transmission lines and networks – Coupling networks – With impedance matching
Reexamination Certificate
2007-05-23
2009-10-20
Cho, James H. (Department: 2819)
Wave transmission lines and networks
Coupling networks
With impedance matching
C333S112000, C333S026000
Reexamination Certificate
active
07605673
ABSTRACT:
An RF impedance-matching transformer for matching the output impedance of an RF amplifier to the discharge of a gas-discharge laser includes upper and lower dielectric plates arranged face-to-face and bonded together. A primary U-shaped strip winding is embedded in the bonded surface of one of the dielectric plates. A secondary strip-winding is formed on an exposed surface of the upper dielectric plates. A ground-plane electrode formed on an exposed surface of the lower dielectric plate. An electrical connector connects one end of the secondary strip-winding to the ground-plane electrode via a via-hole extending through the dielectric plates. The other end of the secondary strip-winding can be connected to the laser.
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Hauer Frederick W.
Newman Leon A.
Robotham, Jr. W. Shef
Cho James H.
Coherent Inc.
Hammond Crystal L
Morrison & Foerster / LLP
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