Patent ID: 8004356
Filing Date: 2011-08-23
Classification: H03F

Abstract:
1. A method of tuning a multiport amplifier, the multiport amplifier comprising an even number of power amplifiers arranged in parallel and each amplifier being paired with another amplifier, a series of input ports and a series of output ports, with the number of input ports and the number of output ports being equal to the number of power amplifiers, the input ports being connected to the amplifiers by a signal dividing network and the output ports being connected to the amplifiers by a signal combining network, whereby an input signal at any given input port is amplified by all amplifiers and then recombined into an output signal at a given output port, the method including the step of matching signal phase and gain of each amplifier to signal phase and gain of its paired amplifier to an extent which is more stringent than said matching between non paired amplifiers.