Full-Duplex Transceiver With Forwarded Clock Synchronization
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Solution Overview
Problem
As electronic systems communicate data at increased rates, signal quality between transmitters and receivers deteriorates due to issues like jitter, common-mode noise, and thermal noise, affecting data transmission efficiency.
Innovation Solution
A transceiver design incorporating a primary circuit that generates and forwards a clock signal to a secondary circuit, allowing the secondary circuit to sample data with reduced noise and jitter, and synchronize data transmission using the same clock signal, eliminating the need for a dedicated clock generator in the secondary circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dedicated clock generator is included in the secondary circuit, then the secondary circuit can independently generate clock signals for data sampling and transmission, but the device complexity and power consumption increase
Solution Approach 1:
The patent merges the clock generation function from the secondary circuit to the primary circuit. The primary circuit generates the clock signal and forwards it to the secondary circuit, eliminating the need for a separate clock generator in the secondary circuit. This reduces the overall device complexity while maintaining synchronized operation between circuits.
Solution Approach 2:
The primary circuit assumes multiple functions: it generates clock signals for timing, forwards data to the secondary circuit, and receives feedback signals. This multi-functional design eliminates the need for dedicated clock generation hardware in the secondary circuit, reducing complexity and power consumption.
2Adaptability or versatility
If a dedicated clock generator is included in the secondary circuit, then the secondary circuit can independently generate clock signals, but the power consumption increases
Solution Approach 1:
The clock generation function is merged into the primary circuit, which already consumes power for data transmission operations. By sharing the clock generation resource with the secondary circuit through the forward clock signal path, the patent avoids duplicating power consumption while maintaining synchronized operation.
3Measurement precision
If the secondary circuit uses its own clock signal for data sampling, then timing accuracy can be maintained, but noise and jitter from the secondary circuit's clock generator affect signal quality
Solution Approach 1:
The primary circuit acts as an intermediary that generates the clock signal and forwards it to the secondary circuit. This intermediary approach allows the secondary circuit to use a stable clock signal from the primary circuit rather than generating its own, thereby reducing noise and jitter while maintaining timing accuracy for data sampling.
4Productivity
If data transmission rate is increased, then communication efficiency improves, but signal quality deteriorates due to increased noise and jitter
Solution Approach 1:
The patent implements a feedback mechanism where the secondary circuit receives the clock signal from the primary circuit, samples data based on this clock signal, and sends feedback signals back to the primary circuit. This feedback loop allows for synchronization and adjustment, maintaining signal quality even at higher data transmission rates by ensuring proper timing coordination between both circuits.
Data Source
AI summary
This disclosure is generally directed to a full-duplex transceiver including a primary circuit and a secondary circuit communicating using a clock signal of the primary circuit (e.g., a single clock signal). The primary circuit may include circuitry to generate and/or forward the clock signal to the secondary circuit. The secondary circuit may sample received data using the clock signal. Moreover, the secondary circuit may generate data, perform data processing operations, and/or transmit data using the clock signal of the primary circuit.