RF Power Amplifier Bias Switching for Multi-Band Circuit Miniaturization

1Reliability

If separate amplifiers are used for different communication systems or frequency bands, then amplification performance for each system is optimized, but the number of circuit elements increases and the circuit size increases

Engineering Contradiction:

Improveamplification performanceVSAvoidnumber of circuit elements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single power amplifier that can handle multiple communication systems (4G and 5G) and different frequency bands through dynamic bias signal adjustment. The amplifier is configured to selectively amplify signals from different systems by changing its operating characteristics via control circuits, eliminating the need for separate dedicated amplifiers for each system while maintaining optimized performance for all.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements dynamics by introducing dynamic bias signal control to the power amplifier. Control circuits adjust the bias signals applied to the amplifier based on the input signal type (4G or 5G), enabling the amplifier to dynamically change its operating point and optimize performance for different communication systems. This dynamic adaptation allows one amplifier to replace multiple static amplifiers.

Inventive Principle:

Principle #15Dynamics

2Reliability

If separate amplifiers are used for different communication systems or frequency bands, then amplification performance for each system is optimized, but the circuit size increases

Engineering Contradiction:

Improveamplification performanceVSAvoidcircuit size

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent applies universality by designing a single power amplifier that can handle multiple communication systems (4G and 5G) and different frequency bands through dynamic bias signal adjustment. The amplifier is configured to selectively amplify signals from different systems by changing its operating characteristics via control circuits, eliminating the need for separate dedicated amplifiers for each system while maintaining optimized performance for all.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functionality of multiple separate amplifiers into a single integrated power amplifier unit. By combining the amplification functions for 4G and 5G systems into one amplifier with dynamic bias control, the circuit footprint is reduced while maintaining the performance benefits of system-specific optimization.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If a single amplifier is used for different communication systems, then the number of circuit elements is reduced, but amplification performance for each system may deteriorate

Engineering Contradiction:

Improvenumber of circuit elementsVSAvoidamplification performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent implements dynamics by introducing dynamic bias signal control to the power amplifier. Control circuits adjust the bias signals applied to the amplifier based on the input signal type (4G or 5G), enabling the amplifier to dynamically change its operating point and optimize performance for different communication systems. This dynamic adaptation allows one amplifier to replace multiple static amplifiers.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by dynamically adjusting the bias signal parameters (voltage or current levels) applied to the power amplifier based on the detected communication system. The control circuits modify these electrical parameters in real-time to optimize the amplifier's transfer characteristics for either 4G or 5G signals, ensuring high performance despite using a single amplifier.

Inventive Principle:

Principle #35Parameter changes

4Device complexity

If fixed bias signals are applied to the amplifier, then the circuit design is simplified, but power consumption increases and amplification performance is not optimized for different bandwidths

Engineering Contradiction:

Improvecircuit design simplicityVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamics by introducing dynamic bias signal control to the power amplifier. Control circuits adjust the bias signals applied to the amplifier based on the input signal type (4G or 5G), enabling the amplifier to dynamically change its operating point and optimize performance for different communication systems. This dynamic adaptation allows one amplifier to replace multiple static amplifiers.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by dynamically adjusting the bias signal parameters (voltage or current levels) applied to the power amplifier based on the detected communication system. The control circuits modify these electrical parameters in real-time to optimize the amplifier's transfer characteristics for either 4G or 5G signals, ensuring high performance despite using a single amplifier.

Inventive Principle:

Principle #35Parameter changes

RF Power Amplifier Bias Switching for Multi-Band Circuit Miniaturization

Solution Overview

Problem

Innovation Solution

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

Solution Approach 1:

Solution Approach 2:

2Reliability

Solution Approach 1:

Solution Approach 2:

3Device complexity

Solution Approach 1:

Solution Approach 2:

4Device complexity

Solution Approach 1:

Solution Approach 2:

Data Source

AI summary