Switchable Current-to-Voltage Converter for Variable Bandwidth
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Solution Overview
Problem
Current wireless communication devices face challenges in processing signals with wide bandwidths without distortion and managing power consumption effectively, particularly in mobile devices where spatial efficiency and power efficiency are crucial.
Innovation Solution
A current-to-voltage converter with a trans-impedance amplifier and a resistor-capacitor (RC) circuit, along with switches, allows for operation in both wide and narrow bandwidth modes by forming different circuits, enabling efficient signal processing and power management through the use of a switch controller to adjust the RC circuit's configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a trans-impedance amplifier is used to process wide bandwidth signals, then signal processing capability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth switching by using control signals to reconfigure the circuit topology. The trans-impedance amplifier operates in wide bandwidth mode when high data throughput is required, and switches to narrow bandwidth mode for power-saving operations. This dynamic reconfiguration allows the system to adapt its signal processing capability and power consumption to actual operational needs.
Solution Approach 2:
The patent changes the operational parameters of the trans-impedance amplifier by switching between different bandwidth modes. By adjusting the bandwidth parameter dynamically based on communication requirements, the system achieves optimal balance between signal processing performance and power consumption efficiency.
2Productivity
If bandwidth is increased to increase data throughput, then productivity is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts bandwidth based on data throughput requirements. When high data throughput is needed, the trans-impedance amplifier operates in wide bandwidth mode. When lower throughput suffices, it switches to narrow bandwidth mode to reduce power consumption, achieving dynamic optimization of the productivity-power consumption tradeoff.
Solution Approach 2:
The trans-impedance amplifier is designed to perform multiple functions by supporting both wide bandwidth and narrow bandwidth modes. This multi-functionality allows the same hardware component to adapt to different data throughput requirements while managing power consumption efficiently.
3Reliability
If trans-impedance amplifier operates continuously, then signal conversion reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic switching between operational modes based on communication requirements. The trans-impedance amplifier is activated in wide bandwidth mode only when data transmission requires high throughput, and switched to low-power narrow bandwidth mode or standby state during periods of lower activity, maintaining reliability while reducing average power consumption.
Solution Approach 2:
The system changes the operational state of the trans-impedance amplifier dynamically. By adjusting parameters such as bandwidth and operational mode based on real-time communication needs, the system maintains signal conversion reliability when required while minimizing power consumption during low-activity periods.
Data Source
AI summary
Provided is a current-to-voltage converter for converting a current signal into a voltage signal. The current-to-voltage converter may include: a trans-impedance amplifier including an input terminal and an output terminal; a resistor-capacitor (RC) circuit including a first end and a second end respectively connected to the input terminal and the output terminal of the trans-impedance amplifier, and a resistor and a capacitor connected to each other in parallel between the first end and the second end; and a plurality of switches configured to form at least one of a first converting circuit configured to convert the current signal via the trans-impedance amplifier and the RC circuit in a wide bandwidth mode, and a second converting circuit configured to convert the current signal via the RC circuit in a narrow bandwidth mode.