Providing controllable impedance at a reference plane in a...

Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type

Reexamination Certificate

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C333S124000, C326S030000

Reexamination Certificate

active

06930564

ABSTRACT:
Apparatus for providing a controllable impedance at a reference plane in a circuit comprises a unidirectional transmission line loop having first and second input/output terminals. The first input/output terminal is connected to the reference plane and an amplifier is located in the transmission line loop to amplify signals passing in a direction from the second input/output terminal to the first input/output terminal. A variable tuned circuit couples the second input/output terminal to a terminating device.

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