Switch Controller With Idle Gate Voltage for Balanced Mode Transitions
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Solution Overview
Problem
Existing communication systems face challenges in achieving balanced and efficient switching between transmit and receive modes due to varying capacitance and turn-on times of series and shunt switches, leading to suboptimal performance characteristics.
Innovation Solution
A system and method for controlling gate voltages of switches using a controller that applies a high voltage during a rising edge, a low voltage during a falling edge, and an idle voltage in between, with a level shifting circuit to manage these transitions, thereby optimizing switch turn-on times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional switching control is used, then the system can operate in transmit or receive mode, but the turn-on times of series and shunt switches are unbalanced and suboptimal
Solution Approach 1:
The patent applies parameter changes by using different gate voltage levels for different switch types. Specifically, series switches receive a first gate voltage level while shunt switches receive a second gate voltage level, optimizing their respective turn-on times. This parameter differentiation resolves the contradiction by allowing each switch type to operate at its optimal voltage level, thereby reducing overall turn-on time while maintaining switching efficiency.
2Reliability
If different capacitance switches are used for transmit and receive, then switching functionality is achieved, but turn-on time balance between switch types is poor
Solution Approach 1:
The patent implements local quality by providing tailored gate voltage levels to different switch types based on their specific capacitance characteristics. Series switches with higher capacitance receive a first gate voltage level, while shunt switches with lower capacitance receive a second gate voltage level. This localized optimization ensures that each switch type achieves balanced and reliable turn-on performance according to its specific operational requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces average turn-on times for both transmit and receive switches, ensuring they meet desired performance thresholds and improving overall system efficiency.
Implementation Method 1
a circuit configured to detect a rising edge of the control signal, detect a falling edge of the control signal
Implementation Method 2
responsive to detecting the rising edge of the control signal, raising a first gate voltage of the one or more first switches to a high voltage, responsive to detecting the falling edge of the control signal, lowering the first gate voltage to a low voltage
Data Source
AI summary
A system for selectively switching between a transmit mode and a receive mode, the system including one or more first switches; a controller configured to provide a control signal indicating a time to switch the system between the transmit mode and the receive mode; and a circuit configured to detect a rising edge of the control signal, detect a falling edge of the control signal, responsive to detecting the rising edge of the control signal, raising a first gate voltage of the one or more first switches to a high voltage, responsive to detecting the falling edge of the control signal, lowering the first gate voltage to a low voltage, and responsive to lowering the first gate voltage to the low voltage, raising the first gate voltage to an idle voltage, the idle voltage being less than the high voltage and greater than the low voltage.