Low-pass filter based on helical metal wire

A low-pass filter and metal wire technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of limited stop-band suppression depth, low power capacity, and inability to fine-tune, and achieve high pass-band cut-off frequency, debugging The effect of convenience and simple structure processing

Inactive Publication Date: 2013-09-18
SHAANXI HUAXUN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the suspended stripline low-pass filter still has disadvantages such as low power capacity, limited stop-band suppression depth, and inability to fine-tune

Method used

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  • Low-pass filter based on helical metal wire
  • Low-pass filter based on helical metal wire
  • Low-pass filter based on helical metal wire

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Embodiment

[0035] Such as figure 1 , figure 2 As shown, a low-pass filter based on a spiral metal wire, including a base 2 provided with a metal cavity 5, and a cover plate 1 arranged on the base 2, also includes a metal wire 4 and an insulating material 6, and is located on the metal At least three metal plates 3 in the cavity 5 are characterized in that the metal plates 3 are connected together by a metal wire 4, and the metal plates 3 are insulated from the metal cavity 5 by an insulating material 6; The cross-sectional shape is rectangular. The metal wire 4 is a column, and its cross-sectional shape is consistent along its axis; the metal wire 4 is in a spiral shape between two adjacent metal plates 3 .

[0036] The cross-sectional shape of the metal wire 4 is circular. The cross-sectional shape of the metal wire 4 is a rectangle. The cross-sectional shape of the metal plate 3 perpendicular to the axis of the metal wire 4 is rectangular, and the surface of the metal plate 3 para...

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Abstract

The invention discloses a low-pass filter based on a helical metal wire. The low-pass filter based on the helical metal wire comprises a base provided with a metal cavity, and a cover plate arranged on the base, and further comprises a metal wire, insulating materials and at least three metal plates disposed in the metal cavity. The metal plates are connected with one another through the metal wire, and the metal plates are insulated from the metal cavity through the insulating materials, and a portion of the metal wire between two adjacent metal plates is in a helical shape. The low-pass filter based on the helical metal wire has the advantages of being simple in structural processing, convenient to debug, and high in pass band cut-off frequency. The low-pass filter based on the helical metal wire is expected to be widely used in electronic systems of various microwave bands, especially in military and civil fields such as radar, missile guidance, communication and the like.

Description

technical field [0001] The invention relates to a low-pass filter based on spiral metal wires, in particular to a low-pass filter made of metal wires and metal plates. Background technique [0002] A low-pass filter can be implemented by periodically capacitively loading a coaxial inner conductor. The most common low-pass filters include disk-loaded coaxial inner conductors and microstrip inner conductors with abrupt impedance changes. The former has disadvantages such as complex structure, high processing precision requirements, difficult support, not steep transition frequency band suppression, and difficult debugging. The latter has the disadvantages of high loss at the high end of the channel, low power capacity, limited depth of stop band suppression, not steep enough transition band suppression, and inability to fine-tune. Compared with the ordinary microstrip low-pass filter, the suspended stripline low-pass filter that appeared on the market recently has improved t...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203H01P1/207
Inventor 王清源谭宜成文松
Owner SHAANXI HUAXUN SCI & TECH CO LTD
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