HIGH-FREQUENCY POWER AMPLIFICATION ELECTRONIC PART AND WIRELESS COMMUNICATION SYSTEM
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Accused Products
Abstract
A high-frequency power amplification electronic part is disclosed which comprises a power amplifier circuit and a bias control circuit, the power amplifier circuit having a plurality of amplifier stages for amplifying an input high-frequency signal, the bias control circuit acting to bias the power amplifier circuit. The power amplifier circuit controls output power in accordance with input power that is varied while a gain of the power amplifier circuit is being fixed by either a bias current or a bias voltage supplied from the bias control circuit. The bias control circuit supplies at least two diode characteristic elements with a predetermined current each in order to generate at least two voltages demonstrating different temperature characteristics, the bias control circuit further using the generated voltages as a basis for generating either a plurality of bias currents or a plurality of bias voltages having a desired temperature-dependent rate of change each, the generated bias currents or bias voltages being fed to each of the plural amplifier stages constituting the power amplifier circuit.
70 Citations
22 Claims
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1-13. -13. (canceled)
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14. A high-frequency power amplification electronic component comprising:
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a power amplifier circuit which has a plurality of amplifier stages for amplifying an input signal; and
a bias control circuit which generates bias voltages or bias current to the power amplifier circuit;
wherein the bias control circuit includes two or more diode characteristic elements which supply predetermined currents and generate two or more voltages having different temperature characteristics from each other, and which generate the bias voltages or the bias currents having different temperature characteristics from each other. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification