Circuit configuration for setting the operating point of a radiofrequency transistor and amplifier circuit

Circuit configuration for setting the operating point of a radiofrequency transistor and amplifier circuit

An amplifier circuit with a radiofrequency transistor has a circuit for setting the operating point. The setting circuit provides a base current for the radiofrequency transistor depending on the voltage drop across a resistor that is connected into the collector circuit of the radiofrequency transi...

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1. Verfasser: SCHAFFER JOSEF-PAUL
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Sprache:eng
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AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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description An amplifier circuit with a radiofrequency transistor has a circuit for setting the operating point. The setting circuit provides a base current for the radiofrequency transistor depending on the voltage drop across a resistor that is connected into the collector circuit of the radiofrequency transistor. The circuit has a differential element, which is fed by the supply voltage and compares the voltage drop across the resistor with a reference voltage. The base current is generated by a current source in dependence on the voltage difference. The circuit requires only a low supply voltage, with the result that the power consumed in the resistor is also low. The circuit can be implemented with a small number of components.
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The setting circuit provides a base current for the radiofrequency transistor depending on the voltage drop across a resistor that is connected into the collector circuit of the radiofrequency transistor. The circuit has a differential element, which is fed by the supply voltage and compares the voltage drop across the resistor with a reference voltage. The base current is generated by a current source in dependence on the voltage difference. The circuit requires only a low supply voltage, with the result that the power consumed in the resistor is also low. The circuit can be implemented with a small number of components.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title Circuit configuration for setting the operating point of a radiofrequency transistor and amplifier circuit
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