Clock Frequency Offset Circuit Using Single-Sideband Mixing
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Solution Overview
Problem
Existing data transmission systems require improvements in signal treatment and frequency offset functions for clock signals to enhance data transmission efficiency and effectiveness.
Innovation Solution
A device comprising a delay element, circuit branches with frequency dividers and integrators, and single side band mixing circuits to apply a frequency offset function to clock signals, generating a fifth signal through quadrature and integration of clock signals, with optional sign change and compression functions to improve spectral purity and reduce harmonic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional frequency offset functions are used for clock signals, then data transmission can be performed, but spectral purity is degraded and harmonic interference increases
Solution Approach 1:
The frequency offset function is segmented into multiple independent processing stages: delay element for time offset, frequency divider for frequency reduction, integrator for signal processing, and single side band mixing for frequency translation. Each stage processes the signal independently, allowing optimization of spectral purity at each step while minimizing harmonic interference generation.
2Manufacturing precision
If complex signal processing circuits are implemented, then spectral purity improves, but device footprint and power consumption increase
Solution Approach 1:
Multiple signal processing functions are merged into a single integrated device architecture. The delay element, frequency divider, integrator, and single side band mixing circuit are combined in one unit, reducing the overall device footprint compared to separate implementations while maintaining high spectral purity through coordinated operation of all components.
3Manufacturing precision
If complex signal processing circuits are implemented, then spectral purity improves, but power consumption increases
Solution Approach 1:
The device utilizes parameter changes in the clock signal itself to achieve frequency offset without requiring high-power amplification or complex modulation schemes. By changing the frequency parameter through division and the phase parameter through integration and mixing, the system achieves high spectral purity with lower power consumption compared to traditional methods that rely on high-power signal generation.
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 solution enhances spectral purity, reduces power consumption, and minimizes footprint while enabling efficient data transmission across a wide frequency range.
Implementation Method 1
a delay element configured to output a second signal corresponding to the first signal offset by a duration equal to a first period of said first signal divided by four
Implementation Method 2
a first circuit configured to divide the frequency of the first signal by a given number
Implementation Method 3
a second circuit configured to integrate an output of the first circuit
Implementation Method 4
a third circuit configured to perform single side band mixing to combine the first signal, the second signal, the third signal and the fourth signal to output a fifth signal
Data Source
AI summary
An electronic device applies a frequency offset function to a first signal having a first frequency. The device includes a delay element configured to output a second signal corresponding to the first signal delayed by a duration equal to a first period of said signal divided by four. A circuit branch includes a first circuit configured to divide the frequency of the first signal by a given number coupled in series with a second circuit configured to implement an integration. The circuit branch outputs a third signal and a fourth signal. A single side band mixing circuit processes the first signal, second signal, third signal and fourth signal to generate an output signal.