RF Bias Voltage Circuit for Reliable Transmission Path Switching
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Solution Overview
Problem
RF switches in RF electronic products require a bias voltage to operate their conduction state effectively, but existing solutions do not efficiently generate and manage bias voltages related to RF signals, affecting the performance of RF transmission paths.
Innovation Solution
A voltage generating circuit that receives RF signals and generates bias voltages, including auxiliary and system voltages, to operate the conduction state of RF transmission paths, using rectification and voltage adjustment circuits to ensure reliable voltage supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bias voltage is provided to operate the conduction state of RF transmission paths, then the performance of RF switches is improved, but the complexity of voltage generation and management increases
Solution Approach 1:
The patent combines multiple voltage generation functions (auxiliary voltage generation and system voltage generation) into a single integrated voltage generating circuit. This circuit receives RF signals and simultaneously generates both auxiliary voltages for RF switch operation and system voltages for overall circuit operation, thereby reducing the number of separate voltage supply components and simplifying the overall device structure while maintaining reliable RF switch performance
Solution Approach 2:
The voltage generating circuit is designed to perform multiple functions: it generates auxiliary voltages specifically for controlling the conduction state of RF transmission paths, generates system voltages for powering the RF circuit, and operates directly from RF signals without requiring external voltage inputs. This multi-functional approach reduces the need for separate dedicated voltage sources for each function
2Reliability
If bias voltages are generated from RF signals using rectification circuits, then the voltage supply reliability is improved, but the device complexity increases
Solution Approach 1:
The voltage generating circuit is designed to generate its own operating voltages directly from the RF signals it receives. The rectification circuit converts RF signals to auxiliary voltages, and the voltage adjustment circuit processes these to create system voltages, allowing the circuit to be self-sufficient without requiring external voltage inputs for its operation
Solution Approach 2:
The patent introduces auxiliary voltages as an intermediary between the RF signals and the system voltages. The rectification circuit first converts RF signals to auxiliary voltages, which then serve as input to the voltage adjustment circuit that generates the final system voltages. This two-stage process with auxiliary voltages as intermediaries enables reliable voltage generation while maintaining circuit modularity
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 effectively generates and manages bias voltages to control the conduction state of RF transmission paths, enhancing the operation of RF switches and ensuring reliable RF signal transmission.
Implementation Method 1
the rectification circuit generates at least one auxiliary voltage related to the RF signal
Data Source
AI summary
A radio frequency (RF) device and its voltage generating circuit are provided. The RF device includes the voltage generating circuit and a RF circuit. The voltage generating circuit receives a RF signal and generates at least one bias voltage related to the RF signal. The RF circuit is used to receive the RF signal. The RF circuit is coupled to the voltage generating circuit to receive the bias voltage. The bias voltage is used to operate the conduction state of at least one RF transmission path of the RF circuit.