Power amplifying circuit
AssigneeMurata Manufacturing Co., Ltd.
InventorTakashi Yamada
Life of this patent
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AssigneeMurata Manufacturing Co., Ltd.
InventorTakashi Yamada
Estimating the term…
A power amplifying circuit includes multi-stage power amplifiers, bias circuits, and a control circuit. The bias circuits output corresponding bias currents based on corresponding control currents. The control circuit outputs the control currents to the bias circuits based on a control voltage. The power amplifiers include a first stage of first and second power amplifiers connected in parallel electrically. The bias circuits include first and second bias circuits. The control circuit includes first and second current output units. The first current output unit outputs, to the first bias circuit, a first control current which has a first current value when the control voltage is a first threshold voltage, and which increases linearly with the control voltage, and the second current output unit outputs, to the second bias circuit, a second control current, having a second constant current value, when the control voltage is the first threshold voltage or greater.
A power amplifying circuit comprising:
Dependencies are inferred from the claim text.