Transmitter Power Amplifier Module for Multi-Mode Multi-Band Support
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Solution Overview
Problem
Conventional mobile transmitters are limited in supporting Multi-Mode Multi-Band (MMMB) communication services due to inefficiencies in power amplifier modules (PAMs), which hinder the implementation of Carrier Aggregation (CA) technology and Dual Subscriber Identification Module Dual Active (DSDA) schemes, leading to increased power consumption and complex construction.
Innovation Solution
A transmitter design that minimizes the number of power amplifier components by dividing uplink CA or MMMB PAMs into Low Band (LB) and High Band (HB) modules, with a control module to manage power amplifiers efficiently, allowing for simultaneous operation of multiple communication bands without additional power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three or more separate PAMs are used to support CA and DSDA, then all communication services and frequency bands can be supported, but power consumption increases and construction becomes more complicated
Solution Approach 1:
The patent combines multiple power amplifier modules into a single integrated PAM structure. Specifically, it merges the 3G/4G PAM (handling LB and HB bands) and the 2G PAM into one unified module, reducing the total number of separate PAM components from three or more to two, thereby simplifying the transmitter construction while maintaining support for both CA and DSDA functionalities
Solution Approach 2:
The integrated PAM is designed with multi-functional capability to handle multiple communication standards (2G, 3G, 4G) and multiple frequency bands (LB and HB) simultaneously. The module incorporates multiple power amplifiers within a single structure, each capable of operating in different bands, making the transmitter universally adaptable to various communication services without requiring separate dedicated PAMs for each function
2Adaptability or versatility
If three or more separate PAMs are used to support CA and DSDA, then all communication services and frequency bands can be supported, but power consumption increases
Solution Approach 1:
The patent combines multiple power amplifier modules into a single integrated PAM structure. Specifically, it merges the 3G/4G PAM (handling LB and HB bands) and the 2G PAM into one unified module, reducing the total number of separate PAM components from three or more to two, thereby simplifying the transmitter construction while maintaining support for both CA and DSDA functionalities
Solution Approach 2:
The patent eliminates redundant power amplifier components by discarding the need for separate 3G/4G PAM and 2G PAM modules. By integrating their functions into a unified PAM structure, the system recovers efficiency by reducing the total power consumption associated with operating multiple independent amplifier modules, while still maintaining full support for CA and DSDA operations
3Device complexity
If a single MMMB PAM is used, then the structure is simple, but only one band can be operated at a time, preventing CA technology
Solution Approach 1:
The patent segments the frequency band handling capability within the PAM structure by incorporating multiple power amplifiers that can operate on different frequency bands simultaneously. The 3G/4G PAM is divided into LB and HB band capabilities, and the 2G PAM adds additional band support, allowing the integrated module to handle multiple bands at once, thus enabling CA technology while maintaining a unified structure
Solution Approach 2:
The integrated PAM is designed with multi-functional capability to handle multiple communication standards (2G, 3G, 4G) and multiple frequency bands (LB and HB) simultaneously. The module incorporates multiple power amplifiers within a single structure, each capable of operating in different bands, making the transmitter universally adaptable to various communication services without requiring separate dedicated PAMs for each function
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 design enables efficient support for MMMB, CA technology, and DSDA schemes, reducing power consumption and simplifying the transmitter structure while maintaining effective signal processing across multiple frequency bands.
Implementation Method 1
a first Power Amplifier Module (PAM) including a first power amplifier that amplifies the first high band signal, a second power amplifier that amplifies the second high band signal, and a third power amplifier that amplifies the first low band signal
Implementation Method 2
a second PAM including a fourth power amplifier that amplifies the second low band signal, a fifth power amplifier that amplifies the third high band signal, and a sixth power amplifier that amplifies the third low band signal
Implementation Method 3
a Front End Module (FEM) that switches a plurality of band signals for a first communication scheme and a plurality of band signals for a second communication scheme
Data Source
AI summary
A transmitter and method are provided for processing a transmission signal. The transmitter includes an FEM that switches a plurality of band signals for a first and second communication scheme, wherein the band signals for the first communication scheme include a first HB signal, a second HB signal, a first LB signal, and a second LB signal, and the band signals for the second communication scheme include a third LB and a third HB signal; a first PAM including a first power amplifier that amplifies the third HB signal, a second power amplifier that amplifies the first HB signal, and a third power amplifier that amplifies the first LB signal; and a second PAM including a fourth power amplifier that amplifies the third LB signal, a fifth power amplifier that amplifies the second HB signal, and a sixth power amplifier that amplifies the second LB signal.