Switchable Filter Circuit for Multi-Mode Signal Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Circuit systems require filters that can adapt to different filtering processes for various applications, but existing filters lack the ability to seamlessly switch between multiple filtering modes, such as low pass, high pass, and band pass filtering, which limits their versatility and reliability.
Innovation Solution
A filter design incorporating a switching circuit that controls a low pass filter circuit to perform either a low pass or band pass filtering process, and in conjunction with a high pass filter circuit, to achieve different filtering processes based on the switch's state, allowing for efficient filtering in multiple modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single filter circuit is used, then the device complexity is reduced, but the adaptability to different filtering processes deteriorates
Solution Approach 1:
The filter circuit is designed to perform multiple filtering functions (low pass, high pass, band pass) by combining a low pass filter circuit with a high pass filter circuit. The switching circuit enables a single filter structure to adapt to different filtering processes, making the device universal and multi-functional without requiring separate dedicated circuits for each filter type.
Solution Approach 2:
The switching circuit dynamically reconfigures the filter circuit connections based on the desired filtering mode. By controlling the switching states, the filter can transition between different filtering processes (low pass, high pass, band pass), enabling adaptive behavior without physical reconfiguration of the entire filter structure.
2Adaptability or versatility
If multiple filter circuits are used for different filtering processes, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The patent merges a low pass filter circuit and a high pass filter circuit into a single integrated filter structure. Instead of using separate independent filter circuits for low pass and high pass functions, both filter circuits are combined and shared, with the switching circuit managing their coordinated operation to achieve multiple filtering modes.
Solution Approach 2:
The combined filter circuit structure serves multiple purposes: it can perform low pass filtering, high pass filtering, and band pass filtering by appropriately configuring the switching circuit. This multi-functional design eliminates the need for separate dedicated filter circuits, reducing overall device complexity while maintaining adaptability.
3Volume of moving object
If component sizes are reduced, then the device footprint is minimized, but the voltage isolation performance deteriorates
Solution Approach 1:
The switching circuit acts as an intermediary element that enables proper voltage isolation between different filter circuits despite their reduced physical size. By carefully controlling the switching states and timing, the circuit ensures that voltage signals are properly isolated when not actively connected, maintaining reliability while allowing for compact component design.
Data Source
AI summary
A filter can perform two filtering processes. The filter includes a switching circuit, a first filter circuit, and a second filter circuit. The first filter circuit is coupled to the switching circuit. The second filter circuit is coupled to the switching circuit. The first filter circuit performs a first filtering process on an input signal according to a state of the switching circuit. The first filter circuit and the second filter circuit work together to perform a second filtering process on the input signal according to the state of the switching circuit.