Power amplifier module
A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor i...
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| creator | NAKAJIMA, SHIZUKI ISHIHARA, SHOTA MORISAWA, FUMINORI HONDA, YURI SATO, MASATO ONO, SEIKO SHIMAMUNE, YUSUKE KOSHIO, KAZUHIRO |
| description | A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor in which an input signal and a first bias current are supplied to a base and an emitter is grounded, a second transistor in which an emitter is connected to a collector of the first transistor, the second current is supplied to a base, and a first amplified signal obtained by amplifying the input signal is output from a collector, and a third transistor in which the first current is supplied to a collector, a bias control current or voltage is supplied to a base, and the first bias current is supplied from an emitter to the base of the first transistor. |
| format | Patent |
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| language | chi ; eng |
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| subjects | AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRICITY |
| title | Power amplifier module |
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