Mitsubishi Electric Corporation Files Patent Application for Amplifier Innovation

Strategic Insights -

In a breakthrough development, Mitsubishi Electric Corporation has filed a patent application for an amplifier that incorporates innovative design features to enhance its performance and efficiency. According to the application, the amplifier includes a resistive section that connects the amplification paths in a unique configuration, comprising a resistor with a width that is narrower on one end side compared to the other. This design allows for improved power density distribution and reduced likelihood of loop oscillation. The invention aims to provide an amplifier that can prevent excessive concentration of electric power in the resistor, thereby improving overall stability and reliability.

Key Takeaways:

  • The patent application, filed by Kunihiro Sato and Hiromitsu Utsumi, describes an amplifier that includes a resistive section with a width-tapered resistor to improve power density distribution.
  • The amplifier has a pair of amplification paths provided in parallel between the input and output terminals, each including a transistor, and a resistive section that connects the pair of amplification paths.
  • According to the application, the resistive section includes a pair of conductor patterns provided on both sides of the resistor and electrically connected to the resistor.
  • The claims describe 15 different embodiments of the amplifier, each with unique features and applications.
  • The invention aims to provide an amplifier that can prevent excessive concentration of electric power in the resistor, thereby improving overall stability and reliability.

Statistics:

  • The patent application was filed on July 22, 2024, and posted online on October 16, 2025.
  • The application has 15 claims, describing different aspects of the amplifier's design and functionality.
  • The invention is designed for use in a variety of applications, including electrical equipment manufacturing, circuit board design, and electronics companies.

Sources:

  • "Amplifier," patent application by SATO, Kunihiro and UTSUMI, Hiromitsu, filed July 22, 2024 and posted October 16, 2025, U.S. Patent Application Number 20250323609.
  • https://ppubs.uspto.gov/pubwebapp/external.html?q=(20250323609)&db=US-PGPUB&type=ids