Phase-Coherent Differential Transformer for Low-Noise Frequency Division
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional twist-coupled toggle latch based frequency dividers are inefficient in power usage and generate noise due to non-coherent energy storage in parasitic capacitances, which is detrimental for high-frequency wireless technologies.
Innovation Solution
The implementation of a phase-coherent transformer in differential structures that stores magnetic energy between coupled inductors, allowing for power-efficient and low phase noise frequency division with tolerance to differential input phase mismatch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional twist-coupled toggle latch based frequency dividers are used, then frequency division function is achieved, but power consumption is high and phase noise is generated due to non-coherent energy storage in parasitic capacitances
Solution Approach 1:
The patent replaces the conventional twist-coupled toggle latch structure with a phase-coherent transformer-based differential structure. This substitution changes the fundamental energy storage mechanism from non-coherent parasitic capacitance charging/discharging to coherent magnetic energy storage and transfer, thereby eliminating the harmful charging/discharging noise while maintaining frequency division functionality.
Solution Approach 2:
The patent changes the energy storage parameter from electrical (parasitic capacitance) to magnetic (transformer inductance). By using magnetic energy storage in the phase-coherent transformer, the system achieves coherent energy transfer between differential circuits, reducing power consumption and eliminating the phase noise generated by non-coherent electrical energy storage in conventional latches.
2Productivity
If phase-coherent transformer is used to store magnetic energy, then power efficiency and division gain are improved, but device complexity increases
Solution Approach 1:
The phase-coherent transformer serves multiple functions simultaneously: it stores magnetic energy, transfers energy coherently between differential circuits, provides frequency division, and maintains phase coherence. This multi-functionality achieves high division gain while the transformer's inherent structure keeps the overall circuit complexity manageable compared to conventional approaches.
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 approach results in reduced power consumption, increased division gain, and lower phase noise, making the frequency dividers more efficient and effective for high-frequency applications while maintaining performance across varying input phase mismatches.
Implementation Method 1
a phase-coherent transformer connected to the differential structure for storing magnetic energy reverberating between the first circuit and the second circuit
Data Source
AI summary
Phase-coherent differential structures contain a phase-coherent transformer having two pairs of phase-coherent coupled differential inductors.