Amplifiers – With distributed parameter-type coupling means – Distributed amplifier
Patent
1993-03-11
1994-11-01
Mullins, James B.
Amplifiers
With distributed parameter-type coupling means
Distributed amplifier
330147, 330148, 330277, 330286, 330295, H03F 360, H03F 368
Patent
active
053610385
ABSTRACT:
An active load applied to the gate transmission line termination of distributed power devices reduces the low frequency noise power appearing at the output of the device. The active load, including at least one active device such as a field effect transistor, operates by transforming the input impedance of a low noise amplifier to the desired load impedance. The active load is connected to one end of an input transmission line having a plurality of impedances connected in electrical series. An input terminal is connected to the opposite end. An output transmission line, also having a plurality of impedances connected in series, has an output terminal at one end and a terminating output impedance at the other. A plurality of active devices are connected to junction points between the series connected impedances of the input and output lines.
REFERENCES:
patent: 4668920 (1987-05-01), Jones
patent: 4769618 (1988-09-01), Parish et al.
patent: 5012203 (1991-04-01), Beyer et al.
"An Active `Cold` Noise Source", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-29, No. 4, Apr. 1981, pp. 344-347 R. Frater and D. Williams.
C. Aitchison, "The Intrinsic Noise Figure of the MESFET Distribute Amplifier", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-33, No. 6, Jun. 1985, pp. 460-466.
Allen Barry R.
Carillo Juan C.
Dixit Rahul
Jones William L.
Nelson Bradford L.
Mullins James B.
TRW Inc.
LandOfFree
Active load applications for distributed circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active load applications for distributed circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active load applications for distributed circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1804446