Dual-Mode Transceiver Oscillator Split to Reduce Pulling Effect
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Solution Overview
Problem
Current signal transceivers using single-frequency oscillating signals for dual-mode communication suffer from phase errors and frequency offsets due to the pulling effect, which increases power consumption and noise levels.
Innovation Solution
A dual-mode signal transceiver employing two transmitter circuits operating with oscillating signals of different frequencies, where the frequency of one oscillating signal is not an integral multiple of the other, to reduce the pulling effect and optimize power consumption, along with a receiver circuit processing external signals using one of the oscillating signals to read data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-frequency oscillating signal is used to modulate output signals of multiple wireless transmission configurations, then the device complexity is reduced, but phase errors and frequency offsets are caused due to the pulling effect
Solution Approach 1:
The patent divides the single oscillating signal into multiple independent oscillating signals with different frequencies, where each oscillating signal is assigned to a specific wireless transmission configuration (e.g., Bluetooth Low Energy mode uses first oscillating signal, normal Bluetooth mode uses second oscillating signal). This segmentation eliminates the pulling effect between different transmission configurations and prevents phase errors and frequency offsets.
2Use of energy by moving object
If a single oscillating signal is used for dual-mode communication, then the power consumption is reduced, but the pulling effect increases noise levels and degrades signal quality
Solution Approach 1:
The patent segments the power consumption across multiple oscillating signals, where each signal operates independently at its optimal frequency. This prevents the pulling effect that would otherwise increase noise levels and degrade signal quality, while still maintaining relatively low power consumption through efficient frequency selection for each mode.
Data Source
AI summary
A dual-mode signal transceiver includes a first transmitter circuit, a second transmitter circuit, and a receiver circuit. The first transmitter circuit is configured to operate in a first mode and configured to process a first input signal according to a first oscillating signal, in order to output a first output signal. The second transmitter circuit is configured to operate in a second mode and configured to process a second input signal according to a second oscillating signal, in order to output a second output signal, wherein a frequency of the second oscillating signal is not an integral multiple of a frequency of the first oscillating signal. The receiver circuit is configured to process an external signal associated with one of the first mode and the second mode according to the first oscillating signal, in order to read data associated with the external signal.