FSIR-based multi-zero-point transmission characteristic filter

A transmission characteristic and filter technology, applied in waveguide devices, electrical components, circuits, etc., to achieve low cost, good processing accuracy, and reduced size

Inactive Publication Date: 2018-02-23
机比特电子设备南京有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the past, filter designs either only had high sideband suppression characteristics, or only had wide stopband characteristics; filter designs that can organically combine the two are rare, and they all appear in waveguide filter designs, but waveguide filters Planar two-dimensional integration is not possible, and its volume and weight are also important factors that seriously restrict the application of the system

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  • FSIR-based multi-zero-point transmission characteristic filter
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  • FSIR-based multi-zero-point transmission characteristic filter

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Embodiment Construction

[0032] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0033] An embodiment of the present invention provides an FSIR-based multi-zero-point transmission characteristic filter, which includes a bottom copper plating layer, an intermediate printed board substrate, and a top copper plating layer. The bottom copper plating layer and the top copper plating layer respectively cover the two sides of the middle layer printed board substrate. In the embodiment of the present invention, the thickness of the bottom copper plating layer and the top copper plating layer are both 0.035 mm, and the middle layer printed board substrate is made of Rogers 5880 dielectric material with a thic...

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Abstract

The invention discloses an FSIR-based multi-zero-point transmission characteristic filter. Multiple FSIRs form an array in a combination manner and then multi-path coupling is further formed; a puncturing hole is formed in the center of the filter, namely the center of the coupling path, to be grounded, and an electric coupler is introduced to further form electromagnetic mixed coupling; by virtueof multi-path crossed coupling and electromagnetic mixed coupling, multiple transmission zero points are realized; the high sideband suppression and wide stop band suppression performance of the filter are realized based on the multiple zero points; and meanwhile, miniaturization of the filter is realized through the FSIR. The filter has high performance advantage while the filter also can be simple in structure; batch manufacturing of the filters can be realized by adopting a simple printed circuit board process, and the processing precision can be well controlled, high rate of finished products is achieved, and the advantage of low cost can be ensured; and the filter can be applied to communication, radar and other wireless systems in a large-scale manner, such as LMDS, MMDS, 4G, 5G, marine affair radar and the like.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave filters, and in particular relates to the design of an FSIR-based multi-zero point transmission characteristic filter. Background technique [0002] Microwave and millimeter-wave bandpass filters are important components of communication systems and radar systems, and their functions are particularly important in wireless receivers. In addition, microwave and millimeter-wave bandpass filters are also the key and core of many design issues in microwave and millimeter-wave systems, such as Inverter, frequency multiplier, frequency source and multi-channel communication, etc. The electromagnetic spectrum is limited and must be allocated according to different applications; and filters can be used to limit the radiation of high-power transmitters in the specified frequency band, and can be used to prevent receivers from being interfered with outside the operating frequency band. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 黄涛邵振海
Owner 机比特电子设备南京有限公司
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