RF Module Filter Routing for High-Power Multi-Band Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio-frequency modules face challenges in achieving improved transmission power, particularly when output power levels of power amplifiers differ across various frequency bands, leading to inefficiencies and increased complexity in design.
Innovation Solution
A radio-frequency module design incorporating a mounting substrate with a first and second power amplifier, a switch, and filters, where the second power amplifier has a higher output power level than the first, with direct connection to a filter to minimize power loss, and a signal processing circuit for enhanced transmission capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switch is introduced to connect power amplifiers to filters, then adaptability to different frequency bands is improved, but device complexity increases
Solution Approach 1:
The radio-frequency module is divided into multiple independent circuit blocks, each handling specific frequency bands. The first power amplifier and second power amplifier are separated into distinct blocks, each with dedicated filters. This segmentation allows each block to be optimized independently while maintaining overall system adaptability across multiple frequency bands.
2Power
If output power levels of power amplifiers are increased, then transmission power is improved, but energy loss increases
Solution Approach 1:
The patent extracts and eliminates unnecessary intermediate components (switches) from the signal path between the second power amplifier and its dedicated filter. By establishing a direct connection, the design removes sources of power loss while maintaining the required high transmission power output for the second frequency band.
3Adaptability or versatility
If multiple power amplifiers with different output power levels are used, then frequency band coverage is improved, but manufacturing precision requirements increase
Solution Approach 1:
Each power amplifier circuit block is designed with locally optimized characteristics tailored to its specific frequency band requirements. The first power amplifier is optimized for first frequency bands with lower output power, while the second power amplifier is optimized for second frequency bands with higher output power. This local quality approach allows each block to achieve optimal performance for its designated band without requiring precise matching across different power levels.
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 enables improved transmission power by reducing power loss and simplifying the design of the second power amplifier, while also allowing for simultaneous communication across multiple frequency bands with increased efficiency.
Implementation Method 1
The first power amplifier amplifies a transmission signal of a first frequency band and outputs the amplified transmission signal of the first frequency band
Implementation Method 2
The second power amplifier amplifies a transmission signal of a second frequency band, which is different from the first frequency band, and outputs the amplified transmission signal of the second transmission band
Implementation Method 3
Respective pass bands of the plurality of first filters are contained in the first frequency band. A pass band of the second filter is contained in the second frequency band
Data Source
AI summary
A radio-frequency module includes a first power amplifier, a second power amplifier, a switch, a plurality of first filters, and a second filter. The first power amplifier amplifies a transmission signal of a first frequency band and outputs the amplified transmission signal. The second power amplifier amplifies a transmission signal of a second frequency band and outputs the amplified transmission signal. The pass bands of the plurality of first filters are contained within the first frequency band. The pass band of the second filter is contained within the second frequency band. The second power amplifier has a greater output power level than the first power amplifier. The first output terminal of the first power amplifier is switchably connectable to the plurality of first filters via the switch. The second output terminal of the second power amplifier is connected to the second filter without the switch interposed therebetween.