Patent ID: 8344824
Filing Date: 2013-01-01
Classification: H03F,H03H

Abstract:
1. An asymmetric power divider, comprising: a power dividing unit for supplying different amounts of power to a carrier amplifier and a peaking amplifier, which are connected in parallel; a first matching network connected between the power dividing unit and the carrier amplifier so as to perform impedance matching between the power dividing unit and the carrier amplifier; and a second matching network connected between the power dividing unit and the peaking amplifier so as to perform impedance matching between the power dividing unit and the peaking amplifier; a first amplifying unit disposed between an input terminal and the first matching network, formed to have a common gate, and configured to amplify a first input signal; a second amplifying unit disposed between the input terminal and the second matching network connected in parallel with the first amplifying unit, formed to have a cascode structure, and configured to amplify a second input signal; and a matching circuit connected between the input terminal and the first amplifying unit and between the input terminal and the second amplifying unit, and configured to perform impedance matching and modulate a phase of the input terminal's input signal so that the first input signal supplied to the first amplifying unit and the second input signal supplied to the second amplifying unit have a phase difference of substantially 90 degrees.