Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent
1996-12-12
1998-12-01
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
330301, H03F 326
Patent
active
058444432
ABSTRACT:
A high-frequency power amplifier circuit offers the advantages of high input impedance, good linearity, high power efficiency and accurate bias current control in a compact and economical circuit configuration. The amplifier includes a single-ended output stage driven by a symmetrical push-pull emitter follower stage with both active pull-down and active pull-up capability. The emitter follower stage is driven by an active phase-splitter stage, with bias current for the phase-splitter stage and subsequent stages being provided by a bias-current control stage which is directly connected to the phase splitter stage. A linear voltage-to-current converter stage receives a high-frequency input voltage and provides a high-frequency current signal to the input terminal of the bias-current control stage that controls the current in the output stage.
REFERENCES:
patent: 3883813 (1975-05-01), Sekiya
patent: 4431972 (1984-02-01), Ishii et al.
patent: 4442409 (1984-04-01), Preslar
patent: 4502020 (1985-02-01), Nelson et al.
patent: 4893091 (1990-01-01), Lillis et al.
patent: 5049834 (1991-09-01), Kasai
patent: 5365198 (1994-11-01), Wong
patent: 5424686 (1995-06-01), Wong et al.
Biren Steven R.
Mullins James B.
Philips Electronics North America Corporation
LandOfFree
Linear high-frequency amplifier with high input impedance and hi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linear high-frequency amplifier with high input impedance and hi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear high-frequency amplifier with high input impedance and hi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2398626