Active inductor

Details Active inductor Active inductor

2005-10-25

2005-10-25

Le, Dinh T. (Department: 2816)

Wave transmission lines and networks

Negative resistance or reactance networks of the active type

Simulating specific type of reactance

C331S066000

Reexamination Certificate

active

06958668

ABSTRACT:
An active inductor with a smaller voltage drop with respect to the power supply voltage of an integrated circuit can be realized by an active inductor which is biased from a voltage higher than the power supply voltage, the higher voltage being generatable on the integrated circuit. Advantageously, more headroom is left for the amplifying circuit coupled to the active inductor to operate properly than with prior art active inductors. Furthermore, by not simply operating the entire active inductor from a higher voltage, the power dissipation remains the same as if the active inductor were connected as in the prior art only to the power supply voltage, and the task of generating the voltage higher than the power supply voltage is simplified, because only leakage current, e.g., nanoamps, is required.

REFERENCES:
patent: 5672992 (1997-09-01), Nadd
patent: 5821825 (1998-10-01), Kobayashi
patent: 6069516 (2000-05-01), Vargha
“Broad-Band Monolithic Microwave Active Inductor and Its Application to Miniaturized Wide-Band Amplifiers” by S. Hara, T. Tokumitsu, T. Tanaka, and M. Aikawa, IEEE Transactions on Microwave Theory and Techniques, vol. 36, No. 12, Dec., 1998.
Jin-So Ko, et al., “Low Power, Tunable Active Inductor and its Applications to Monolithic VCO and BPF”, Microwave Symposium Digest, 1997. IEEE MTT-S International Denver, CO USA Jun. 8-13, 1997, New York, NY, pp. 929-932.
Jin-So Ko, et al., “Low Power, Tunable Active Inductor and its Applications to Monolithic VCO and BPF”, Microwave Symposium Digest, 1997. IEEE MTT-S International Denver, CO USA Jun. 8-13, 1997, New York, NY, p. 929, left hand column, line 1, p. 930, left hand column, lione 7, Figure 1.
Dunn, W.: “Driving and Protection of high Side NMOS Power Switches”, Conference Record of the Industry Applications Society Annual Meeting., Seattle, WA, Oct. 7-12, 1990, New York, NY, IEEE, US, vol. 2. meeting 25, pp. 1626-1628, legt hand column, line 5.

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