UWB Round-Trip Transceiver for Low-Power Ranging and Data Links
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Solution Overview
Problem
Existing ultra-wideband (UWB) technology faces challenges with increased hardware size, higher chip unit prices, and high power consumption, limiting its applications and efficiency.
Innovation Solution
A round-trip wireless transceiver system comprising a master module with a transmitter and receiver, and a slave module with a receiver and transmitter, utilizing synchronized on-off keying (S-OOK) for data communication and two-way ranging, enabling precise distance measurement and ultra-low power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If standard-based UWB communication method is adopted, then protocol consistency and system management are improved, but hardware size and power consumption increase
Solution Approach 1:
The patent segments the UWB communication system into two distinct operational modes: a standard-based mode for protocol consistency and a proprietary low-power mode for energy efficiency. The transceiver can switch between these modes, allowing the system to segment the functionality between standard compliance (for stability) and optimized performance (for low power consumption), thus resolving the contradiction between protocol consistency and power consumption.
Solution Approach 2:
The patent employs parameter changes by adjusting communication parameters such as pulse width, pulse repetition frequency, and modulation schemes depending on the operational mode. In low-power mode, the system modifies these parameters to reduce energy consumption while maintaining acceptable communication performance, thereby resolving the contradiction between standard-based operation and power efficiency.
2Stability of the object's composition
If standard-based UWB communication method is adopted, then protocol consistency and system management are improved, but chip size increases
Solution Approach 1:
The patent segments the hardware architecture into modular components that can be selectively activated based on the communication mode. The low-power mode utilizes a simplified hardware path that bypasses certain standard-compliance modules, effectively segmenting the chip functionality to reduce the active hardware footprint while maintaining protocol consistency when needed.
Solution Approach 2:
The patent implements multi-functional hardware blocks that can operate in different configurations. For example, the same transceiver circuit can operate in full-standard mode for protocol consistency or in a simplified mode for low-power operation, making the hardware universal and adaptable to different requirements without increasing chip size permanently.
3Extent of automation
If standard-based UWB communication method is adopted, then system management is improved, but chip unit price increases
Solution Approach 1:
The patent segments the system management into automated standard-based management and simplified proprietary management. The automated system management handles protocol compliance and coordination, while the proprietary low-power mode uses simplified management routines. This segmentation allows the system to maintain good system management through automation when needed, while reducing manufacturing complexity and cost in low-power operation modes.
4Power
If instantaneous power of several hundred milliwatts is used, then data transmission capability is improved, but application scope is limited
Solution Approach 1:
The patent implements dynamic power management where the transceiver can adapt its power consumption level based on the application requirements. The system dynamically switches between high-power mode for demanding data transmission tasks and ultra-low-power mode for applications like positioning or low-data-rate communication, making the technology adaptable to a broader range of applications with different power and performance requirements.
Solution Approach 2:
The patent uses parameter changes to adjust transmission power, pulse characteristics, and communication rates according to the specific application needs. This allows the system to optimize the balance between data transmission capability and power consumption, expanding the application scope to include both high-performance and low-power scenarios.
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 system allows for simultaneous ultra-precision distance measurement and data communication while reducing hardware size and power consumption, leading to lower chip prices and broader applicability.
Implementation Method 1
a range finder module for two-way ranging that counts time simultaneously with transmission of an output signal of the first transmitter, and calculates a distance by receiving a signal output through the second transmitter at the first receiver
Data Source
AI summary
Proposed are ultra-wideband transmitter and receiver. The ultra-wideband round-trip wireless transceiver includes a master module comprising a first transmitter and a first receiver for ultra-wideband round-trip data communication, and a slave module comprising a second receiver and a second transmitter for the round-trip data communication, wherein the master module further includes a range finder module for two-way ranging that counts time simultaneously with transmission of an output signal of the first transmitter, and calculates a distance by receiving a signal output through the second transmitter at the first receiver by using a trigger according to the output signal of the first transmitter at the second receiver of the slave module.