Stacked RF Power Amplifier Module With Harmonic Termination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing RF front end units in electronic devices suffer from harmonic wave emission, which acts as noise and enters other devices, necessitating a technology to suppress this harmonic wave entry.
Innovation Solution
A power amplification device and RF circuit module are designed with a first member and a second member, where the second member includes a first amplifier that amplifies RF signals, and the first member includes a control circuit and a termination circuit connected through a member-member connection conductor to attenuate harmonic wave components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the radio frequency amplifier and control IC are stacked and connected by wire bonding to reduce package substrate size, then the package substrate size is reduced, but harmonic waves are emitted from wiring lines and enter other devices as noise
Solution Approach 1:
A termination circuit is introduced as an intermediary component between the radio frequency amplifier and other circuits. This termination circuit absorbs harmonic waves generated by the amplifier, preventing them from propagating through wiring lines and entering other devices as noise, while allowing the compact stacked configuration to be maintained
Solution Approach 2:
The harmful harmonic waves generated by the radio frequency amplifier are converted into beneficial energy dissipation through the termination circuit. The termination circuit provides a controlled impedance path that absorbs the harmonic energy, transforming the harmful noise emission into controlled energy dissipation that protects other devices
Data Source
AI summary
A power amplification device includes a first member in which a first circuit is formed, a second member in which a second circuit is formed, and a member-member connection conductor that electrically connects the first circuit and the second circuit to each other. The second member is mounted on the first member. The second circuit includes a first amplifier, which amplifies a radio frequency signal to output a first amplified signal. The first circuit includes a control circuit that controls an operation of the second circuit. At least part of a first termination circuit, which is connected to the first amplifier through the member-member connection conductor and which attenuates a harmonic wave component of the first amplified signal, is formed in the first member.