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Kamimura; Fumiya
Osaka, JP
No. of patents:

Patent Number Title Of Patent Date Issued
7899420 Wireless transmission device in which transmission output is controlled in feedback control March 1, 2011
A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of
7683712 Wireless frequency power amplifier, semiconductor device, and wireless frequency power amplifica March 23, 2010
A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change

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