Floating-Ground Oscillator Coupling for Millimeter-Wave Synchronization
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Solution Overview
Problem
The injection locking technique struggles to synchronize high-frequency oscillation signals effectively, particularly for frequencies ranging from 30-300 GHz, due to transmission delays.
Innovation Solution
A synchronous oscillation circuit design that connects the ground terminals of multiple oscillators through a common floating grounding unit, allowing them to interfere and synchronize their oscillation signals without relying on injection locking, even at millimeter wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If injection locking technique is used to synchronize oscillators, then synchronization is achieved for low-frequency signals, but transmission delay occurs and synchronization fails for high-frequency signals (30-300 GHz)
Solution Approach 1:
The patent introduces a common floating grounding unit as an intermediary element that couples the ground terminals of multiple oscillators. This mediator enables indirect interaction between oscillators through shared ground impedance, allowing synchronization without direct signal injection paths that cause delay. The floating ground connection acts as a coupling mechanism that synchronizes high-frequency oscillators effectively.
2Reliability
If injection locking technique is used, then oscillation signals can be synchronized, but the technique becomes ineffective for millimeter wavelength signals
Solution Approach 1:
The patent changes the coupling parameter from direct signal injection to common ground connection. By modifying the interaction mechanism between oscillators through parameter change (using impedance coupling via floating ground instead of injection locking), the system achieves adaptability across a broad frequency range including millimeter wavelengths where injection locking fails.
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 successful synchronization of oscillation signals at high frequencies, maintaining stability and reducing transmission delays, as demonstrated by synchronized oscillation frequencies and phase adjustments in steady state.
Implementation Method 1
the oscillators interfere with each other. When the oscillation signals generated by the oscillators reach a steady state, the oscillation frequencies of the oscillators will be synchronized
Data Source
AI summary
A synchronous oscillation circuit has multiple oscillators, a grounding unit and a common floating grounding unit. Each of the oscillators has a ground terminal. The grounding unit has a first terminal and a second terminal, wherein the second terminal is grounded. The common floating grounding unit is electrically connected between the ground terminals of the oscillators and the first terminal of the grounding unit. The oscillators are grounded through the common floating grounding unit and the grounding unit, so that the oscillators interfere with each other. When the oscillation signals generated by the oscillators reach a steady state, the oscillation frequencies of the oscillators are synchronized.