Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1998-09-18
2000-08-08
Gensler, Paul
Wave transmission lines and networks
Coupling networks
With impedance matching
333 33, 361281, H03H 738
Patent
active
061007730
ABSTRACT:
An impedance matching device includes a variable capacitor constituted by a non-linear dielectric thin film and an upper electrode disposed on a lower electrode formed on a substrate. The non-linear dielectric thin film is formed by a deposition, screen-printing, electroplating, or other technique, and changes its relative dielectric constant according to applied voltage. Therefore, the capacity of the variable capacitor is controlled and the impedance is matched, by simply controlling the applied voltage across the non-linear dielectric thin film. Consequently, the arrangement makes it possible to cut down the impedance matching device in size and cost, compared to an arrangement incorporating a capacitor and a coil for adjustment, effects a much simpler matching operation, and facilitates a manufacturing process.
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Masuda Yoshiyuki
Nakamichi Masumi
Gensler Paul
Sharp Kabushiki Kaisha
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