Transceiver Common-Mode Voltage Control Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices with transmitters, receivers, and transceivers face issues with common-mode voltage disturbances, leading to poor signal-to-noise-and-distortion ratio (SNDR), electromagnetic interference (EMI), and insufficient voltage headroom, which degrade their performance and accuracy.
Innovation Solution
Incorporating a common-mode voltage control circuit in transmitters, receivers, and transceivers, which includes a hybrid transceiving circuit with digital-to-analog and analog-to-digital converters, line drivers, terminators, and filtering/amplifying circuits, to detect and adjust common-mode voltages dynamically, stabilizing the voltage at critical nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmitter transmits differential signals, then the signal transmission function is achieved, but the common-mode voltage on the circuit is disturbed
Solution Approach 1:
The patent introduces a common-mode voltage control circuit as an intermediary component between the transmitter and the circuit node. This control circuit includes a common-mode voltage detection unit and a common-mode voltage adjustment unit that work together to detect and adjust the common-mode voltage, thereby mediating the disturbance caused by differential signal transmission and maintaining voltage stability.
2Productivity
If the receiver receives differential signals, then the signal reception function is achieved, but the common-mode voltage on the circuit is disturbed
Solution Approach 1:
The patent introduces a common-mode voltage control circuit as an intermediary component between the receiver and the circuit node. This control circuit includes a common-mode voltage detection unit and a common-mode voltage adjustment unit that work together to detect and adjust the common-mode voltage, thereby mediating the disturbance caused by differential signal reception and maintaining voltage stability.
3Device complexity
If common-mode voltage is not controlled, then the circuit structure is simple, but the signal-to-noise-and-distortion ratio deteriorates
Solution Approach 1:
The patent introduces a common-mode voltage control circuit as an intermediary component between the transmitter and the circuit node. This control circuit includes a common-mode voltage detection unit and a common-mode voltage adjustment unit that work together to detect and adjust the common-mode voltage, thereby mediating the disturbance caused by differential signal transmission and maintaining voltage stability.
Solution Approach 2:
The common-mode voltage control circuit implements a feedback mechanism where the detection unit continuously monitors the common-mode voltage and feeds this information to the adjustment unit, which then makes real-time adjustments to maintain the common-mode voltage within the optimal range, ensuring high signal-to-noise-and-distortion ratio.
4Device complexity
If common-mode voltage is not controlled, then the device complexity is low, but electromagnetic interference occurs
Solution Approach 1:
The patent introduces a common-mode voltage control circuit as an intermediary component between the transmitter and the circuit node. This control circuit includes a common-mode voltage detection unit and a common-mode voltage adjustment unit that work together to detect and adjust the common-mode voltage, thereby mediating the disturbance caused by differential signal transmission and maintaining voltage stability.
Solution Approach 2:
The common-mode voltage control circuit implements a feedback mechanism where the detection unit continuously monitors the common-mode voltage and feeds this information to the adjustment unit, which then makes real-time adjustments to maintain the common-mode voltage within the optimal range, ensuring high signal-to-noise-and-distortion ratio.
5Device complexity
If common-mode voltage is not controlled, then the voltage headroom is insufficient, but the linearity of the circuit decreases
Solution Approach 1:
The patent introduces a common-mode voltage control circuit as an intermediary component between the transmitter and the circuit node. This control circuit includes a common-mode voltage detection unit and a common-mode voltage adjustment unit that work together to detect and adjust the common-mode voltage, thereby mediating the disturbance caused by differential signal transmission and maintaining voltage stability.
Solution Approach 2:
The common-mode voltage control circuit implements a feedback mechanism where the detection unit continuously monitors the common-mode voltage and feeds this information to the adjustment unit, which then makes real-time adjustments to maintain the common-mode voltage within the optimal range, ensuring high signal-to-noise-and-distortion ratio.
Data Source
AI summary
A transmitter, a receiver and a transceiver are provided. The transceiver includes a hybrid transceiving circuit and a common-mode voltage control circuit. The hybrid transceiving circuit includes a digital-to-analog converter (DAC) circuit, a line driver coupled to the DAC circuit, a filtering and/or amplifying circuit coupled to the line driver, and an analog-to-digital converter (ADC) circuit coupled to the filtering and/or amplifying circuit. The common-mode voltage control circuit is electrically connected to a node of the hybrid transceiving circuit and is configured to detect a common-mode voltage of the node and to adjust the common-mode voltage of the node.