Low-Pass Filter Layout With Bent High-Impedance Segments
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Solution Overview
Problem
Existing low-pass filter structures face challenges in achieving effective high-frequency suppression due to limited length of high impedance segments, leading to increased filter volume and poor space utilization.
Innovation Solution
The filter design incorporates bent high impedance segments formed by first and second rod segments at an included angle, with a high resistance connection segment in a bypass groove of a low impedance segment, enhancing the length of the high impedance segment and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the length of low impedance segment is increased to achieve required suppression effect, then the suppression effect is improved, but the total length of the low-pass filter structure increases, leading to increased filter volume
Solution Approach 1:
The high impedance segment is nested within the bypass groove of the low impedance segment, allowing the high impedance segment to be accommodated within the existing structure rather than extending the overall filter length. This nesting approach enables both segments to coexist in a compact arrangement that maintains suppression effectiveness without increasing total length.
Solution Approach 2:
The high impedance segment is bent into a U-shape configuration, transitioning from a linear one-dimensional arrangement to a two-dimensional spatial configuration. This dimensional change allows the high impedance segment to achieve its required length for suppression while fitting within the bypass groove space, effectively decoupling the length requirement from the overall filter length.
2Reliability
If the length of high impedance segment is increased by adding bypass groove to improve suppression effect, then the suppression effect is improved, but the length of low impedance segment is limited, restricting the increase in high impedance segment length
Solution Approach 1:
The high impedance segment is nested within the bypass groove of the low impedance segment, allowing the high impedance segment to be accommodated within the existing structure rather than extending the overall filter length. This nesting approach enables both segments to coexist in a compact arrangement that maintains suppression effectiveness without increasing total length.
Solution Approach 2:
The high impedance segment is bent into a U-shape configuration, utilizing curvature to pack more length into a compact space. The curved geometry allows the high impedance segment to achieve its required length for suppression while fitting within the limited space of the bypass groove, maximizing the use of available volume.
Data Source
AI summary
Provided is a filter, belonging to the field of radio frequency product technology. The filter includes a low-pass filter structure. The low-pass filter structure includes a high impedance segment and a low impedance segment connected to each other. At least one high impedance segment is bent to form a bent high resistance segment. The bent high resistance segment includes a first rod segment and a second rod segment that are connected to each other and disposed at an included angle. A low impedance segment is provided with a bypass groove. A high resistance connection segment is disposed in the bypass groove. One end of the high resistance connection segment is connected to the bottom of the bypass groove, and the other end of the high resistance connection segment is connected to a high impedance segment.