Patent ID: 6091441
Filing Date: 2000-07-18
Classification: H04N

Abstract:
A distribution amplifier, comprising:an output gain state section for amplifying an input signal to provide at least first and second outputs, wherein the output gain stage section includes at least first and second active amplifier circuits for providing, respectively, the first and second outputs; anda radio frequency (RF) detector for processing the first and second outputs to provide first and second voltages indicative of status of the output gain stage section; wherein the status of the output gain stage section is indicated without use of any pilot signal; and wherein the RF detector comprises at least first and second detector circuits that are DC coupled in series between a positive voltage terminal and a ground voltage terminal, the first detector circuit processing the first output to provide the first voltage indicative of the status of the first active amplifier circuit, and the second detector circuit processing the second output to provide the second voltage indicative of the status of the second active amplifier circuit.