Patent ID: 7239215

Claim:
A multicell amplifier, comprising: a) a first power divider unit which, in use, receives an input signal of the amplifier, divides the input signal into 2N subsignals, amplifies the 2N subsignals into first amplified signals and recombines the first amplified signals in two N-way power combiners to form two local output signals; b) two further power divider units which, in use, take the two local output signals and divide the two local output signals into 4N subsignals, amplify the 4N subsignals into second amplified signals and recombine the second amplified signals to form three local output signals; and c) two power combiner units which, in use, take the three local output signals and divide the three local output signals into 4N subsignals, amplify the 4N subsignals into third amplified signals and recombine the third amplified signals to provide an output signal of the amplifier.