UWB Ranging and Communication Circuit for Parallel Signal Processing
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Solution Overview
Problem
Conventional devices that integrate ranging and communication functions are difficult to miniaturize and are not capable of simultaneous use, requiring separate transmitter and receiver functions for different frequency bands, which limits advanced applications such as tracking a communication partner's movement during communication.
Innovation Solution
A multifunction system that integrates ranging and communication functions using a signal generating device for UWB impulse signals, a carrier wave modulating device, transmission and receiving antennas, amplifying and detecting components, and a receiving circuit that processes both functions in parallel, enabling simultaneous data modulation and demodulation with Pulse Position Modulation (PPM) and analogue-digital conversion for accurate distance calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ranging and communication functions are integrated in the same device, then both functions can be realized in one device, but the device cannot simultaneously use both functions and becomes larger and heavier
Solution Approach 1:
The patent applies universality by enabling a single device to perform both ranging and communication functions simultaneously through parallel signal processing. The receiving circuit is designed to handle both ranging signals and communication signals at the same time, eliminating the need for separate dedicated devices and allowing both functions to be utilized concurrently without increasing device size or weight.
Solution Approach 2:
The patent applies segmentation by dividing the receiving circuit into separate processing paths for ranging and communication functions. This allows independent processing of ranging signals and communication signals within the same device, enabling simultaneous operation while maintaining functional independence and reducing interference between the two functions.
2Reliability
If separate transmitter and receiver functions are used for different frequency bands, then ranging and communication can be performed, but it requires multiple devices and cannot track movement during communication
Solution Approach 1:
The patent makes the receiving circuit universal by enabling it to process both ranging functions and communication functions simultaneously. This eliminates the need for separate dedicated receiving devices for each function, reducing the total number of devices required while maintaining reliable performance of both ranging and communication operations, and enabling movement tracking during communication.
3Measurement precision
If impulse signals are transmitted repeatedly for ranging, then ranging accuracy is maintained, but peak power consumption increases
Solution Approach 1:
The patent applies periodic action by transmitting impulse signals at specific intervals rather than continuously, and by using pulse position modulation where data is encoded in the timing of impulses. This allows the system to maintain ranging accuracy through periodic measurements while significantly reducing peak power consumption compared to continuous transmission, as the transmitter remains inactive during intervals between impulses.
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
Enables the detection of communication partners and real-time tracking of their movement during communication, reduces peak power consumption, and achieves high-speed data modulation with reduced interference between radar sensors.
Implementation Method 1
an UWB (Ultra Wideband) radio system which is an ultra wideband radio system using a band of several GHz has become the center of attention. The UWB is an impulse radio system using an ultra short pulse wave having a pulse width of approximately nano seconds or less.
Implementation Method 2
a carrier wave modulating device for generating a transmission signal by up-converting the impulse signal by a predetermined carrier wave
Implementation Method 3
a receiving antenna that receives the transmission signal reflected by a physical object and arriving again
Implementation Method 4
by measuring the time by which the impulse is transmitted and the time until the transmission wave is reflected on a predetermined physical object surface and is received again at a transmission source, the ranging between the predetermined physical object and the UWB wave transmission source can be highly accurately performed
Data Source
AI summary
A ranging and communication multifunction system processable by integrating a ranging function and a communication function is provided.The ranging and communication multifunction system 1 of the present invention includes a transmission unit 2 and a receiving unit 3, and integrates two functions of ranging and communication. The transmission unit 2 includes a transmission circuit 4, a carrier wave modulation device 5, and a transmission antenna 6, and the receiving unit 3 includes a receiving circuit 7, a wave detector 8, a low noise amplifier (LNA) 9, and a receiving antenna 10. The data modulation performed in the transmission circuit 4 uses a PPM system. The receiving circuit 7 provides a ranging circuit 11 and a communication circuit 12 separately, so that the demodulation processing of ranging and communication can be performed in parallel.