Stabilizing circuit for feedback RF amplifier

Details Stabilizing circuit for feedback RF amplifier Stabilizing circuit for feedback RF amplifier

1991-04-18

1991-11-19

Mullins, James B.

Amplifiers

Combined with automatic amplifier disabling switch means

330149, 330151, 330207P, 455117, 455126, H03F 126

Patent

active

050669222

ABSTRACT:
A transmitter, with an inphase input for receiving an inphase baseband input signal, and a quadrature input for receiving a quadrature baseband input signal, comprises a modulator, coupled to the inphase and quadrature inputs, for modulating the inphase and quadrature baseband signals to provide a modulated radio-frequency signal and a linear amplifier, coupled to the modulator, for amplifying the modulated radio-frequency signal to produce an output signal. Oscillation detector means are coupled to receive the output signal, for detecting oscillation, and for producing an error signal as a result of the oscillation. The transmitter also comprises means for reducing the open loop gain of the feedback loop, disposed between the inphase and quadrature inputs and the modulator. The means for reducing the open loop gain reduces the open loop gain of the transmitter to less than one, in response to the error signal.

REFERENCES:
patent: 3900823 (1975-08-01), Sokal et al.
patent: 4367443 (1983-01-01), Hull et al.
patent: 4439741 (1984-03-01), Turner, Jr.
patent: 4673886 (1987-06-01), Bickley et al.
patent: 4933986 (1990-06-01), Leitch

Affiliated with

Also associated with

Rating

Stabilizing circuit for feedback RF amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilizing circuit for feedback RF amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilizing circuit for feedback RF amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1372964