On-Chip Impedance Control Using Multi-Tap Transformer
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Solution Overview
Problem
Conventional mobile wireless devices are power inefficient due to inefficient transmitters and receivers, which significantly impact battery life, especially as they increasingly rely on battery power and require efficient communication systems for both wireline and mobile communications.
Innovation Solution
Implementing an on-chip impedance control system using a multi-tap transformer with selectively enabled amplifiers, where the impedances of power amplifiers and low noise amplifiers are matched to the transformer taps, allowing for efficient impedance matching and signal coupling, and integrating ferromagnetic materials for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional transmitters and receivers are used in mobile wireless devices, then basic communication functions are achieved, but power efficiency deteriorates significantly
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting impedance values through switching between different amplifier configurations and transformer tap selections. The system changes electrical parameters (impedance, gain, bandwidth) to optimize power efficiency for different operating conditions, directly addressing the power efficiency vs. power consumption contradiction
Solution Approach 2:
The patent implements dynamics through configurable amplifiers that can be selectively enabled or disabled, and transformer taps that can be dynamically switched. This allows the system to adapt its power consumption characteristics in real-time based on communication requirements, resolving the static nature of conventional transmitters and receivers
2Use of energy by moving object
If impedance matching is optimized for specific amplifiers, then power efficiency improves, but device complexity increases due to configurable front end requirements
Solution Approach 1:
The patent applies universality by designing a configurable front end where amplifiers and transformer taps can serve multiple functions. The same hardware infrastructure supports different impedance matching configurations, enabling the system to achieve optimized power efficiency across various operating modes without proportionally increasing complexity
Solution Approach 2:
The patent uses segmentation by dividing the front end into modular components (multiple amplifiers, multi-tap transformer) that can be independently configured. This segmentation allows selective enabling of only the necessary components for each operating condition, managing complexity through modular design
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 approach enhances power efficiency by optimizing impedance matching, reducing power consumption, and extending battery life in mobile wireless devices, enabling better performance across various wireless protocols and standards.
Implementation Method 1
a multi-tap transformer with selectively enabled amplifiers, where the impedances of power amplifiers and low noise amplifiers are matched to the transformer taps
Implementation Method 2
integrating ferromagnetic materials for improved performance
Data Source
AI summary
Methods and systems for on-chip impedance control to impedance match a configurable front end are disclosed and may include selectively enabling one or more amplifiers coupled to taps on a multi-tap transformer in a chip including the amplifiers. The impedances of the amplifiers may be matched to impedances of the taps on the transformer. The amplifiers may include low noise amplifiers wherein the input impedance of each of the low noise amplifiers may be different. The amplifiers may include power amplifiers wherein an output impedance of each of the power amplifiers may be different. The transformer may be coupled to an on-chip antenna, or to an antenna integrated on a package coupled to the chip. The multi-tap transformer may be integrated on the package. RF signals may be communicated via the selectively enabled amplifiers and the multi-tap transformer. The multi-tap transformer may include ferromagnetic materials integrated in the chip.