High-Frequency Module Layout for Power Amplifier Heat Dissipation
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Solution Overview
Problem
The existing high frequency module design suffers from poor heat dissipation characteristics of the power amplifier, leading to increased heat dissipation path lengths and potential interference with other electronic components.
Innovation Solution
The high frequency module is configured with external connection terminals disposed between the power amplifier and other electronic components on the same surface of the mounting substrate, allowing for improved heat dissipation and reduced thermal influence on adjacent components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the power amplifier is disposed on the first main surface of the mounting substrate and heat is dissipated through the via inside the mounting substrate, the metal block, and the terminal to an external substrate, then the heat dissipation path is established, but the length of the heat dissipation path increases and heat dissipation characteristics deteriorate
Solution Approach 1:
The patent transitions from a vertical heat dissipation path (through the substrate thickness via vias) to a lateral heat dissipation path (on the same surface where the power amplifier is disposed). By placing heat dissipation structures such as ground pads and conductive patterns on the first main surface in proximity to the power amplifier, heat can spread laterally across the substrate surface rather than traveling vertically through multiple layers, thereby shortening the heat dissipation path length and improving thermal performance.
2Adaptability or versatility
If the power amplifier is disposed on the first main surface of the mounting substrate, then the power amplifier can be connected to external substrates, but the heat generated at the power amplifier influences other electronic components disposed on the second main surface
Solution Approach 1:
The patent introduces ground pads and conductive patterns as intermediary heat dissipation structures on the first main surface. These intermediaries provide dedicated thermal pathways that channel heat away from the power amplifier laterally, preventing it from affecting other electronic components on the second main surface. The ground pads act as thermal sinks and heat distribution elements that mediate between the power amplifier and the surrounding environment, isolating other components from thermal interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances heat dissipation of the power amplifier and minimizes the thermal impact on neighboring components, thereby improving overall module performance.
Implementation Method 1
heat generated at the power amplifier is transmitted to the external substrate disposed near the second main surface of the mounting substrate, and is thus dissipated
Data Source
AI summary
A high frequency module capable of improving heat dissipation characteristics of a power amplifier and suppressing influence of heat of the power amplifier on another electronic component is provided. A high frequency module includes a mounting substrate, a power amplifier, a switch, a plurality of external connection terminals, and a connector. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The power amplifier and the switch are disposed on the second main surface of the mounting substrate. The plurality of external connection terminals are disposed on the second main surface of the mounting substrate. The connector is able to be connected to an external substrate. The plurality of external connection terminals include a first external connection terminal that is connected to the connector. The first external connection terminal is disposed between the power amplifier and the switch.