Dual-Mode Laser Phase Measurement for Terahertz Signal Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies face challenges in achieving high-speed transmission comparable to wired communication, particularly with the emergence of 6G wireless communication, which requires carrier frequencies of 100 GHz or more to meet the demand for faster data transfer.
Innovation Solution
A phase shift measuring device utilizing a dual mode laser to generate a dual mode signal, which is then split and processed to produce a transmission signal and a reference signal. The device includes a phase control unit that adjusts the phase of the signals and a receiving end that measures the phase shift based on the transmission and reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If carrier frequency is increased to 100 GHz or more to achieve high-speed wireless communication, then transmission speed is improved, but signal phase stability becomes more difficult to maintain
Solution Approach 1:
The patent introduces a phase reference signal as an intermediary to mediate between the transmitted signal and the received signal. This reference signal travels through the same channel conditions but without the data modulation, providing a stable benchmark for phase comparison. By using this intermediary reference, the system can accurately measure and compensate for phase shifts even at high carrier frequencies of 100 GHz or more, thus maintaining phase stability while achieving high transmission speeds
Solution Approach 2:
The patent replaces traditional mechanical or hardware-based phase stabilization mechanisms with a signal-processing approach. Instead of using complex physical phase-locking circuits or mechanical tuning devices, the system uses digital signal processing to compare the phase of the received signal with the phase reference signal. This substitution of mechanical systems with electronic/software-based solutions enables effective phase measurement and compensation at terahertz frequencies where traditional mechanical methods become impractical
2Measurement precision
If phase shift measurement accuracy is improved for terahertz signals, then communication reliability is improved, but measurement system complexity increases
Solution Approach 1:
The patent creates a copy of the transmitted signal structure in the form of a phase reference signal. This reference signal is generated at the transmitter with the same frequency and temporal characteristics as the actual transmission signal, but without data modulation. By having this identical copy traveling through the channel, the receiver can directly compare phases without complex calibration procedures, achieving high measurement accuracy while keeping the system relatively simple
Solution Approach 2:
The phase reference signal serves multiple functions simultaneously: it acts as a phase benchmark for measurement, a channel characteristic probe, and a synchronization reference. This multi-functionality allows a single signal component to provide comprehensive information for phase measurement, reducing the need for separate dedicated measurement apparatus and thereby limiting the increase in system complexity while maintaining high measurement precision
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 device effectively measures phase shifts at terahertz frequencies, enabling the development of high-speed wireless communication systems that can approach the speed of wired communication, which is essential for next-generation communication networks like 6G.
Implementation Method 1
a dual mode laser including a first beat light source generating a first beating signal and a second beat light source generating a second beating signal
Data Source
AI summary
Disclosed is a phase shift measuring device, which includes a dual mode laser including a first beat light source generating a first beating signal and a second beat light source generating a second beating signal, and that outputs a dual mode signal including the first beating signal and the second beating signal, a first splitter that receives the dual mode signal to generate a first branch signal and a second branch signal, the first branch signal and the second branch signal being including the branched first beating signal and the branched second beating signal, respectively, a phase control unit that receives the first branch signal and to generate a combined signal, a transmitting end that receives the combined signal from the phase control unit and generates a transmission signal based on the combined signal, and a receiving end.