抗干扰电路组件和电子设备
By setting a spring-loaded antenna on the circuit board, the problem of high-frequency magnetic field interference on electronic components on the circuit board is solved, achieving effective anti-interference protection without increasing space occupation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LINGAI FUTURE TECHNOLOGY CO LTD
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-17
AI Technical Summary
Sensors and other devices on circuit boards are susceptible to interference from high-frequency magnetic field coupling, which can lead to signal distortion or device damage. Existing anti-interference solutions occupy a lot of space and cannot effectively weaken the high-frequency electromagnetic field energy in the discharge arc.
A spring-loaded antenna is placed on the circuit board and connected to the ground terminal. It surrounds the electronic device to form a barrier, captures and converts high-frequency electromagnetic field energy into common-mode current, and avoids radiation interference to the electronic device.
It effectively weakens the high-frequency electromagnetic field energy in the discharge arc, protects electronic devices, and the spring antenna is small in size and does not take up too much space.
Smart Images

Figure CN224520190U_ABST
Abstract
Claims
1. An interference-resistant circuit assembly, characterized by include: A circuit board (100) having a ground terminal; An electronic device (200) is connected to one side of the circuit board (100); A spring-loaded antenna (300) is disposed on the circuit board (100) and connected to the ground terminal. The spring-loaded antenna (300) and the electronic device (200) are located on the same side and surround the electronic device (200).
2. The anti-jamming circuit assembly of claim 1, wherein, The circuit board (100) has a metal layer (110) on the side away from the electronic device (200), the metal layer (110) having a first width W1, the first width W1 satisfying: 5mm≤W1≤10mm.
3. The anti-jamming circuit assembly of claim 1, wherein, The spring-loaded antenna (300) and the side of the circuit board (100) have a first distance D1, which satisfies: 5mm≤D1≤10mm.
4. The anti-jamming circuit assembly of claim 1, wherein, The spring antenna (300) includes a support (310) and a guide plate (320). The support (310) has a receiving cavity, and there are multiple guide plates (320), which are disposed in the receiving cavity.
5. The anti-jamming circuit assembly of claim 4, wherein, The support portion (310) includes a first support piece (311), a second support piece (312), a third support piece (313), and a fourth support piece (314). The first support piece (311), the second support piece (312), the third support piece (313), and the fourth support piece (314) are connected end to end to form the receiving cavity. One side of the guide piece (320) is connected to the first support piece (311), and the other side is suspended.
6. The anti-jamming circuit assembly of claim 5, wherein, The spring-loaded antenna (300) has a second direction Y and a third direction Z, the second direction Y being perpendicular to the third direction Z, and the guide plate (320) having a first height H1 along the third direction Z, the first height H1 satisfying: 1.5mm≤H1≤3mm; There is a second distance D2 between two adjacent guide vanes (320) along the second direction Y, and the second distance D2 satisfies: 0.8mm≤D2≤1.5mm.
7. The anti-interference circuit assembly according to claim 1, characterized in that, The spring-loaded antenna (300) has a first direction X, a second direction Y and a third direction Z, wherein the first direction X, the second direction Y and the third direction Z are mutually perpendicular; The spring antenna (300) has a first length L1 along the second direction Y, and the first length L1 satisfies: 15mm≤L1≤25mm.
8. The anti-jamming circuit assembly of claim 7, wherein, The spring antenna (300) has a second width W2 along the first direction X, and the second width W2 satisfies: 1mm≤W2≤2mm.
9. The anti-jamming circuit assembly of claim 7 or 8, wherein, The spring antenna (300) has a second height H2 along the third direction Z, and the second height H2 satisfies: 4mm≤H2≤8mm.
10. An electronic device, comprising: Includes the anti-interference circuit component as described in any one of claims 1-9.