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

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

2005-08-16

2005-08-16

Le, Don (Department: 2819)

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

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.

REFERENCES:
patent: 3789301 (1974-01-01), Malaviya
patent: 4072897 (1978-02-01), Takayama
patent: 4205281 (1980-05-01), Nagao
patent: 5034708 (1991-07-01), Adamian et al.
patent: 5276411 (1994-01-01), Woodin, Jr. et al.
patent: 6163499 (2000-12-01), Suzuki
patent: 6297649 (2001-10-01), Tsironis
patent: 6335665 (2002-01-01), Mendelsohn
patent: 2002/0130667 (2002-09-01), Noe
patent: 2004/0196085 (2004-10-01), Shen
patent: 2004/0251983 (2004-12-01), Hsu et al.
patent: 2005/0040845 (2005-02-01), Park
Six, G., European Search Report Application No. EP 02 25 7530 dated Apr. 14, 2003.
Muller et al. “Comparison of Active Versus Passive On-Wafer Load-Pull Characterization of Microwave and MM-Wave Power Devices,” 1994, IEEE, pp. 1077-1080.
Alekseev, E. “W-Band On-Wafer Load-Pull Measurement System and its Application to HEMT Characterization,” 1998, MTT-S International Microwave Symposium Digest, vol. 3, pp. 1479-1482.

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