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Band-rejection microwave interference suppression filter of power cord

A microwave interference and filter technology, applied in waveguide-type devices, circuits, electrical components, etc., to achieve the effects of good insertion loss performance, simple structure, and high current carrying capacity

Inactive Publication Date: 2006-06-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the interference frequency exceeds 10GHz, the filters of the above two structural forms are powerless

Method used

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  • Band-rejection microwave interference suppression filter of power cord
  • Band-rejection microwave interference suppression filter of power cord
  • Band-rejection microwave interference suppression filter of power cord

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Experimental program
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Embodiment Construction

[0019] The power line band-stop microwave interference suppression filter of the present invention is composed of inner and outer conductors and a transmission line vibrator. The filter takes the inner conductor 1 as the axis, and the outer circumference of the middle part of the inner conductor 1 is multi-level stepped, and the outer diameter increases sequentially. , the first transmission line oscillator 4, the second transmission line oscillator 5, the third transmission line oscillator 7, the fourth transmission line oscillator 9, the fifth transmission line oscillator 10 are set on the steps of each level, and the first transmission line oscillator 4, the second transmission line oscillator An insulating positioning sleeve 6 is provided on the outer circumference of the transmission line vibrator 5, an insulating sleeve 8 is provided on the outer circumference of the third transmission line vibrator 7, the fourth transmission line vibrator 9, and the fifth transmission lin...

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Abstract

The power line band-stop microwave interference suppression filter is a power line interference suppression filter with good insertion loss performance in the 8GHz-40GHz frequency band. It is suitable for electromagnetic compatibility and power line filtering in the microwave field. The filter is composed of conductors and Composed of transmission line oscillators, the filter takes the inner conductor as the axis, and the outer circumference of the middle part of the inner conductor is multi-level stepped, and the outer diameter increases sequentially. On each step, there are correspondingly set the first transmission line oscillator, the second transmission line oscillator, The third transmission line vibrator, the fourth transmission line vibrator, and the fifth transmission line vibrator are provided with insulating positioning sleeves on the outer circumferences of the first transmission line vibrator and the second transmission line vibrator, and the third transmission line vibrator, the fourth transmission line vibrator, and the fifth transmission line vibrator are provided with insulating positioning sleeves. An insulating sleeve is arranged on the outer circumference of the vibrator, an outer conductor is arranged on the outer circumference of the insulating positioning sleeve and the insulating sleeve, and a left potting cover and a right potting cover are arranged between two ends of the outer conductor and the inner conductor.

Description

technical field [0001] The invention is a power line interference suppression filter with good insertion loss performance in the 8GHz-40GHz frequency band, which is suitable for power line filtering in the field of electromagnetic compatibility and microwave, and belongs to the technical field of electromagnetic compatibility and microwave. Background technique [0002] In order to prevent external interference from affecting the normal operation of the electronic system through the power line, strict filtering measures must be taken to suppress external electromagnetic interference. There are two types of traditional power supply interference suppression filters: ① LC filters composed of capacitors and inductors are suitable for frequency bands below 1GHz. Affected by the distributed parameters of the capacitance and inductance of the concentrated components, the insertion loss performance of the LC filter decreases significantly when the frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/202
Inventor 蒋全兴周忠元景莘慧
Owner SOUTHEAST UNIV
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