Wave transmission lines and networks – Negative resistance or reactance networks of the active type – Simulating specific type of reactance
Patent
1998-06-03
2000-02-22
Gensler, Paul
Wave transmission lines and networks
Negative resistance or reactance networks of the active type
Simulating specific type of reactance
330 85, H03H 1140
Patent
active
06028496&
ABSTRACT:
An active inductor which consumes less direct current (DC) power and is stably biased, has a smaller number of bias pins, a higher quality factor (Q) and fewer controlling ports, than that of the prior art, is realized in metal semiconductor field effect transistor or bipolar transistor technology. The active inductor includes an inverting amplifier of a common source (common emitter) type, which inversely amplifies an input signal and outputs the amplified signal as an output signal, a non-inverting amplifier of a common gate (common base) cascode type, which non-inversely amplifies the output signal and the amplified signal as the input signal, a capacitor connected between the input signal and a reference signal, and a biasing portion for biasing the inverting amplifier and the non-inverting amplifier.
REFERENCES:
patent: 5202655 (1993-04-01), Hara
patent: 5726613 (1998-03-01), Hayashi et al.
Hara, "Lossless Broad-Band Monolithic Microwave Active Inductors," IEEE Transactions on Microwave Theory and Techniques, 37:1979-1984 (Dec. 1989).
Ko et al., "Lower power, tunable active inductor and its applications to monolithic VCO and BPF," IEEE MTT-S Digest, 929-932 (Jun. 8, 1997).
Lucyszyn et al., "Monolithic Narrow-Band Filter Using Ultrahigh-Q Tunable Active Inductors," IEEE Transactions on Microwave Theory and Techniques, 42:2617-2622 (1994).
Robertson et al., "Ultrawideband Biasing of MMIC Distributed Amplifiers Using Improved Active Load," Electronics Letters, 27:1907-1909 (1991).
Ko Jin-Su
Lee Kwy-ro
Gensler Paul
Samsung Electronics Co,. Ltd.
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