Parallel Transformer Power Amplifier for Dual Output Modes
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Solution Overview
Problem
Power amplifiers face inefficiency and performance degradation due to high DC power consumption, especially in mobile communication systems where communication distance changes, and existing dual output mode designs require separate high and low power amplifiers, leading to increased design complexity and switching losses.
Innovation Solution
A power amplification apparatus with parallel transformers and amplifiers, utilizing switches with inductors and MOSFET transistors to manage input and output signals efficiently, allowing for high and low power modes based on modulation schemes, reducing DC power consumption and switching losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If separate high and low power amplifiers are used for dual output mode, then power amplification capability is improved, but device complexity increases
Solution Approach 1:
The patent combines high power and low power amplification functions into a single power amplifier device. By integrating both amplification modes in one unit rather than using separate amplifiers, the device achieves dual output capability while reducing overall system complexity and component count.
Solution Approach 2:
The patent implements dynamic switching between high power and low power modes using control circuits that adjust the operating state of the power amplifier based on signal requirements. This dynamic adaptability allows the single amplifier to efficiently handle both high and low power scenarios without requiring separate dedicated amplifiers for each mode.
2Productivity
If switches are used to manage input and output signals, then signal routing efficiency is improved, but switching losses increase
Solution Approach 1:
The patent introduces control circuits as intermediary elements that manage the switching operations between high and low power modes. These control circuits coordinate the switching actions to minimize energy losses by optimizing the timing and sequence of switch operations, thereby reducing switching losses while maintaining efficient signal routing.
3Power
If multiple power amplifiers are used for high power mode, then output power is improved, but DC power consumption increases
Solution Approach 1:
The patent employs dynamic mode switching that allows the power amplifier to operate in high power mode only when necessary for long distance communication. For short distance communication, the system dynamically switches to low power mode, thereby achieving high output power capability when needed while minimizing DC power consumption during normal operation.
Solution Approach 2:
The patent changes the operational parameters of the power amplifier based on communication requirements. By adjusting operating parameters such as amplifier gain and power level dynamically, the system can achieve high output power for long distance transmission while operating at lower power levels for short distance communication, thus optimizing the balance between output power and DC power consumption.
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
The solution enables high efficiency in both high and low power modes, reduces DC power consumption, and simplifies design by using a single type of power amplifier, minimizing circuit area and allowing for increased power amplifier numbers without performance degradation.
Implementation Method 1
a first-1 transformer and a first-2 transformer connected to the input part in parallel; a second-1 transformer and a second-2 transformer connected to the first amplifier and the second amplifier, respectively, and connected to an output part in parallel
Implementation Method 2
The first switch includes a transmission line operating as an inductor and a MOSFET transistor to which a control voltage is applied
Data Source
AI summary
In accordance with an aspect of the present disclosure, there is provided a power amplification apparatus, the apparatus comprising: an input part; a first-1 transformer and a first-2 transformer connected to the input part in parallel; a first amplifier and a second amplifier connected to the first-1 transformer and the first-2 transformer, respectively; a first switch connected to one side of the first-2 transformer; a second-1 transformer and a second-2 transformer connected to the first amplifier and the second amplifier, respectively, and connected to an output part in parallel; and a second switch connected to one side of the second-2 transformer.