Transceiver Circuit Compensation for Transmission Power Deviation
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Solution Overview
Problem
Conventional transceiver circuits experience significant transmission power deviations due to temperature changes, leading to varying signal power across different portions of a packet, especially during long transmissions, which can result in errors at the receiving end.
Innovation Solution
A transceiver circuit comprising a counter device, compensation circuit, and adjusting circuit that calculates the execution time of a reception operation to determine compensation values, which are then applied to adjust the signal amplitude during transmission, ensuring consistent power across the packet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the amplifier circuit operates for a long transmission operation, then the transmission power increases, but the temperature increases causing gain decrease and transmission power deviation
Solution Approach 1:
The patent applies preliminary action by calculating the execution time of the reception operation before the transmission operation and determining compensation values in advance. The compensation values are pre-calculated based on the relationship between execution time and temperature-induced gain variation, allowing the system to proactively compensate for transmission power deviation before it occurs during the transmission operation.
Solution Approach 2:
The patent changes the parameter of signal amplitude dynamically during the transmission operation. The adjusting circuit modifies the amplitude of the signal in real-time based on the pre-determined compensation values, which correspond to different time points during the transmission. This parameter change compensates for the temperature-induced gain decrease without requiring physical modification of the amplifier circuit.
2Device complexity
If the amplifier circuit maintains unchanged settings during transmission, then the circuit operation is simple, but transmission power varies significantly across different portions of the packet
Solution Approach 1:
The patent introduces an intermediary mechanism consisting of the counter device, compensation circuit, and adjusting circuit that mediates between the simple amplifier operation and the requirement for consistent transmission power. The counter device tracks execution time, the compensation circuit calculates appropriate compensation values, and the adjusting circuit applies these values to modify signal amplitude, thereby ensuring power consistency without complicating the core amplifier operation.
Solution Approach 2:
The patent implements a feedback mechanism where the execution time of the reception operation is measured and used to determine compensation values that are then applied during the subsequent transmission operation. This feedback loop allows the system to automatically adjust for temperature-induced variations based on the actual operating conditions, maintaining reliable transmission power consistency.
3Quantity of substance
If the packet length is very long, then the data transmission capacity increases, but the transmission power difference between beginning and end of packet becomes significant
Solution Approach 1:
The patent applies segmentation by dividing the transmission operation into multiple time segments corresponding to different portions of the packet. The compensation values are determined for different time segments based on the execution time, allowing each segment to receive appropriate compensation. This segmentation approach enables precise control of transmission power across the entire long packet, maintaining uniformity despite the extended transmission duration.
Data Source
AI summary
A transceiver circuit includes a counter device, a compensation circuit and an adjusting circuit. The counter device is configured to count an execution time of a reception operation and accordingly generate a counting result. The compensation circuit is coupled to the counter device and configured to receive the counting result, determine a plurality of compensation values according to the counting result and sequentially output the compensation values in a transmission operation. The transmission operation follows the reception operation. The adjusting circuit is coupled to the compensation circuit, and configured to receive the compensation values and sequentially adjust amplitude of a signal according to the compensation values in the transmission operation. The compensation values are respectively applied to different portions of the signal.