Patent ID: 8625820

Claim:
An amplifier circuit, comprising: a first input for receiving a first input signal; a first amplifier connected to said first input for outputting a first amplified signal based upon the first input signal; a second input for receiving a second input signal; a second amplifier connected to said second input for outputting a second amplified signal based upon the second input signal; a first combiner section connected to said first amplifier and said second amplifier, for combining said first amplified signal and said second amplified signal into a first combined signal, said first combiner section being connected to a first output, for outputting said first combined signal; a second combiner section connected to said first amplifier and said second amplifier, for combining said first amplified signal and said second amplified signal into a second combined signal, said second combiner section being connected to a second output, for outputting said second combined signal; and a common mode section connected to said first amplifier and said second amplifier, for generating a common mode signal based on a combination of said first amplified signal and said second amplified signal and outputting said common mode signal at a common output connected to said common mode section, wherein the first combined signal, the second combined signal and the common mode signal satisfy the condition that combining the first combined signal and the common mode signal results in a third amplified signal with an amplitude proportional to the amplitude of the first input signal and combining the second combined signal and the common mode signal results in a fourth amplified signal with an amplitude proportional to the amplitude of the second input signal.