HIGH FREQUENCY AMPLIFIER
First Claim
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1. A high frequency amplifier, comprising:
- a power amplification part that is connected to an input matching circuit and an output matching circuit, that amplifies signals input via the input matching circuit, and that outputs the signals to the output matching circuit;
an output detector circuit part that is connected to the output matching circuit;
a bias circuit that supplies a bias current to the power amplification part and the output detector circuit part; and
a resonance circuit that is located between the bias circuit and the output detector circuit part.
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Abstract
To prevent a wrap-around signal from an output detection circuit unit that occurs when commonality is achieved between the power supply of the output detection circuit unit and the bias power supply of a power amplification unit. When commonality is achieved between the power supply of a diode of an output detection circuit unit and the power supply of a bias circuit, a resonance circuit is connected between the bias circuit and the output detection circuit unit, thereby preventing a wrap-around signal from the output side of a power amplification transistor from being input to the input side of the power amplification transistor.
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4 Claims
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1. A high frequency amplifier, comprising:
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a power amplification part that is connected to an input matching circuit and an output matching circuit, that amplifies signals input via the input matching circuit, and that outputs the signals to the output matching circuit; an output detector circuit part that is connected to the output matching circuit; a bias circuit that supplies a bias current to the power amplification part and the output detector circuit part; and a resonance circuit that is located between the bias circuit and the output detector circuit part. - View Dependent Claims (2, 3, 4)
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Specification