Semiconductor instrument
AssigneeMatsushita Elec. Ind. Co. Ltd.
InventorMotonori Ishii
Life of this patent
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Abstract
To provide a semiconductor instrument for improving power added efficiency when a low power is outputted. In the semiconductor instrument in which a radio-frequency input signal (SRF) is supplied to input circuits of a plurality of transistors (1, 2), output circuits of the plurality of transistors (1, 2) are connected in parallel, and a radio-frequency output signal amplified with power is retrieved an amplifying operation of one part transistor (2) of the plurality of the transistors (1, 2) is turned off during a low-output operation.
Claims8
A semiconductor instrument for supplying a radio-frequency input signal to each of input circuits in a plurality of transistors, connecting output circuits of the plurality of transistors in parallel, and retrieving a radio-frequency output signal with amplified power, wherein
- during a low-output operation in which a radio-frequency output signal has an output power equal to or lower than a threshold power, an amplifying operation of part of the plurality of transistors is turned off.
A semiconductor instrument for supplying a radio-frequency input signal to each of input circuits in a plurality of transistors, connecting output circuits of the plurality of transistors in parallel, and retrieving a radio-frequency output signal with amplified power, wherein
- during a low-output operation in which a radio-frequency output signal has an output power equal to or lower than a threshold power, an input bias of some of the plurality of transistors is set lower than that set during a high-output operation.
Dependencies are inferred from the claim text.