User Manual

MCA9129-90-A Installation & Service Manual
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 4-5 July 2001November 2002
4-5.2 Error Amplifier
The main function of the error amplifier is to sample and amplify the signal distortion level gener-
ated by the main amplifier, to a level that cancels out the distortion and IMD when the error signal
is coupled onto the main signal at the amplifier output. The error amplifier is a class AB amplifier,
has 50 15 dB of gain. The amplifier operates on +27 Vdc and a bias voltage of +15 +12Vdc and
is mounted directly on a heat sink.