High-frequency power amplifier and communication device
To provide a high-frequency power amplifier capable of improving the linearity and efficiency of a high-frequency power amplifier by stabilizing, at high frequencies, the bias voltage of a bias circuit featuring the temperature compensating effect of a high-frequency amplifying transistor, a capacit...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
17.03.2009
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| Online Access | Get full text |
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| Summary: | To provide a high-frequency power amplifier capable of improving the linearity and efficiency of a high-frequency power amplifier by stabilizing, at high frequencies, the bias voltage of a bias circuit featuring the temperature compensating effect of a high-frequency amplifying transistor, a capacitor is connected between the base of a bias supply transistor and a reference potential. It is thus possible to possible to suppress variations in the base voltage of the bias supply transistor in particular when the high-frequency power amplifier is at high output and improve the linearity of the high-frequency power amplifier. |
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