Time Information Transmitter-Receiver Phase Synchronization
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Solution Overview
Problem
Wave clocks face reduced receiver sensitivity due to phase shifts in relaying radio waves, which are often out of phase with external radio waves, leading to decreased amplitude and impaired time information transmission.
Innovation Solution
A time information transmitter-receiver and integrated circuit that synchronizes the phase and frequency of the relaying radio wave with the external radio wave, using a phase shifter to align the phases and ensure the relaying radio wave has the same frequency and phase as the external radio wave, thereby eliminating phase shifts and maintaining signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the repeater transmits the relaying radio wave using a carrier wave with the same frequency as the received external radio wave, then the frequency consistency is maintained, but a phase shift is generated between the relaying radio wave and the external radio wave, causing decreased signal amplitude and reduced receiver sensitivity
Solution Approach 1:
The patent applies parameter changes by introducing a phase shifter that dynamically adjusts the phase of the carrier wave. The phase shifter changes the phase parameter of the relaying radio wave to match the phase of the external radio wave, thereby eliminating phase differences and preventing amplitude degradation through destructive interference. This allows the system to maintain both frequency consistency and phase alignment while transmitting the time code signal.
2Ease of manufacture
If the repeater uses a filter to process the received radio wave, then the signal processing is improved, but a phase shift is introduced between the relaying radio wave and the external radio wave, leading to signal amplitude decrease
Solution Approach 1:
The patent introduces a phase shifter as an intermediary component between the filter and the carrier wave generation. The phase shifter acts as a mediator that compensates for the phase shift introduced by the filter. By placing the phase shifter in the signal path, the system can maintain the filtering functionality while simultaneously correcting the phase distortion, thus preserving signal amplitude and improving overall signal processing capability.
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 solution ensures that wave clocks can detect time information reliably without sensitivity loss, as the relaying radio wave is synchronized with the external radio wave, maintaining signal strength and improving receiver performance.
Implementation Method 1
the phase shift is generated between the relaying radio wave to be transmitted and the received external radio wave, by a filter or the like that the repeater comprises
Implementation Method 2
transmits the relaying radio wave obtained by modulating the amplitude of a predetermined carrier wave by the time code
Data Source
AI summary
A time information transmission-reception integrated circuit includes: a reception control circuit for detecting a signal obtained by receiving and amplifying an external radio wave, and generating a clock data signal, based on a carrier signal the phase of which is synchronized with the signal; and a transmission control circuit for generating an amplitude modulation signal obtained by modulating the amplitude of the carrier signal by the transmission time code, by a modulator, and transmitting a relaying radio wave from an antenna, the phase of the relaying radio wave synchronized with the phase of the external radio wave, by correcting the phase shift of the amplitude modulation signal by a phase shifter. Thereby, the phase shift between the external radio wave and the relaying radio wave is cancelled.