Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent
1987-09-11
1989-04-11
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including field effect transistor
330310, H03F 316
Patent
active
048209996
ABSTRACT:
A method and apparatus for amplifying signals is disclosed. In one embodiment, the apparatus comprises a first MOSFET having a drain, a source and a gate. The apparatus further comprises a second MOSFET having a drain, a source and a gate. The second MOSFET is a depletion mode device having a substantially greater drain saturation current than the first MOSFET. The drain of the first MOSFET is connected to the source of the second MOSFET through a first conductor, and the source of the first MOSFET is connected to the gate of the second MOSFET through a second conductor. Finally, the apparatus further comprises a conductor for connecting the drain of the second MOSFET to biasing source to apply sufficient voltage to cause saturation of the first and second MOSFETs.
REFERENCES:
patent: 3271633 (1966-09-01), Csanky
patent: 4247824 (1981-01-01), Hilbourne
patent: 4342967 (1982-08-01), Regan et al.
patent: 4518926 (1985-05-01), Swanson
Hodges, D. A., Gray, P. R., and Brodersen, R. W., "Potential of MOS Technologies for Analog Integrated Circuits," IEEE Journal of Solid-State Circuits, vol. SC-13, No. 3, Jun. 1978, pp. 285-294.
Wallman, H. MacNee, A. B., and Gadsden, C. P., "A Low-Noise Amplifier", Proceedings of the I.R.E., Jun. 1948, pp. 700-708.
Tsividis, Y. P., "Design Considerations in Single-Channel MOS Analog Integrated Circuits--A Tutorial", IEEE Journal of Solid-State Circuits, vol. SC-13, No. 3, Jun. 1978, pp. 383-391.
Csanky, G., "Combining FETs for Higher Gains", Electronic Design, Sep. 27, 1963, pp. 36-44.
Dunne, T., Emmens, T., and Tuthill, M., "CMOS A-D Converter Chip Pushes Out 12 Bits in Record-Setting 5 .mu.s", Electronic Design, Dec. 12, 1985, pp. 93-100.
Goodenough, F., "ADC Chips Leap Ahead Both in Speed and Accuracy", Electronic Design, Sep. 4, 1985, pp. 90-97.
Gray, P. R. and Meyer, R. G., "MOS Operational Amplifier Design-A Tutorial Overview," IEEE Journal of Solid-State Circuits, vol. SC-17, No. 6, Dec. 1982, pp. 969-982.
Vittoz, E. and Fellrath, J., "CMOS Analog Integrated Circuits Based on Weak Inversion Operation," IEEE Journal of Solid-State Circuits, vol. SC-12, No. 3, Jun. 1977, pp. 224-230.
Gray, P. R. and Meyer, R. G., Analysis and Design of Analog Integrated Circuits, John Wiley & Sons, New York, 1984, pp. 191-194, 711-714.
Burke William J.
Mottola Steven
The Aerospace Corporation
LandOfFree
Method and apparatus for amplifying signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for amplifying signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for amplifying signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-669400