Murata manufacturing co., ltd. (20240305247). POWER AMPLIFIER CIRCUIT simplified abstract

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POWER AMPLIFIER CIRCUIT

Organization Name

murata manufacturing co., ltd.

Inventor(s)

Kenji Tahara of Nagaokakyo-shi (JP)

Takeshi Kogure of Nagaokakyo-shi (JP)

Kae Yamamoto of Nagaokakyo-shi (JP)

POWER AMPLIFIER CIRCUIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240305247 titled 'POWER AMPLIFIER CIRCUIT

The power amplifier circuit described in the patent application consists of a carrier amplifier, a peak amplifier, an external output terminal, a combiner, bias circuits for the carrier and peak amplifiers, and a current limit circuit.

  • The carrier amplifier amplifies the input signal, while the peak amplifier amplifies the peaks of the signal.
  • The combiner combines the outputs of the carrier and peak amplifiers before sending the signal to the external output terminal.
  • Bias circuits supply DC bias currents to the carrier and peak amplifiers to ensure proper operation.
  • The current limit circuit adjusts the magnitude of the DC bias current based on the power supply voltage applied to the circuit.

Potential Applications: - This power amplifier circuit can be used in various communication systems, such as radio transmitters and base stations. - It can also be utilized in audio amplifiers and other high-power applications where efficient amplification is required.

Problems Solved: - The circuit addresses the need for a reliable and efficient power amplifier design that can adapt to varying power supply voltages. - It ensures stable operation of the amplifiers under different operating conditions.

Benefits: - Improved efficiency and reliability in power amplification. - Adaptability to changing power supply voltages for consistent performance. - Enhanced signal quality and output power capabilities.

Commercial Applications: Title: Advanced Power Amplifier Circuit for Communication Systems This technology can find commercial applications in the telecommunications industry for high-power amplification needs. It can also be used in audio equipment and other electronic devices requiring efficient amplification.

Questions about the technology: 1. How does the current limit circuit adjust the DC bias current based on the power supply voltage? 2. What are the key advantages of using a combiner in the power amplifier circuit design?


Original Abstract Submitted

a power amplifier circuit includes a carrier amplifier, a peak amplifier, an external output terminal, a combiner that includes an input terminal connected to an output terminal of the power amplifier, an input terminal connected to an output terminal of the power amplifier, and an output terminal connected to the external output terminal, a bias circuit that supplies a dc bias current to the carrier amplifier, a bias circuit that supplies a dc bias current to the peak amplifier, and a current limit circuit that is connected between the power amplifier and the bias circuit and that is configured to change a magnitude of the dc bias current according to a magnitude of a power supply voltage applied to the power amplifier circuit.

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