Wideband band-pass filter with multi-notch characteristic

A technology with band-pass filter and notch characteristics, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of inability to increase or decrease, difficult to process, large structure size, etc., to achieve simple structure, convenient processing, low cost effect

Inactive Publication Date: 2015-11-25
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially the radio wave frequency band covers a wide range, but the electromagnetic field interference in different frequency bands is also becoming more and more serious
Such as mobile communication 2G\3G\4G, global microwave interconnection (3.5GHz), wireless local area network (5.2GHz and 5.8GHz), radio frequency (6.8GHz) and other signals will cause interference to commonly used broadband (2GHz-18GHz) signal transmission systems , leading to failure of the signaling system
At present, such as microstrip structure, via structure, etc. are usually used, but these structures are large in size, complex in structure, not easy to process, the notch frequency band is not adjustable, cannot be increased or decreased, and is only for the wireless LAN frequency band, and the bandwidth is narrow

Method used

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  • Wideband band-pass filter with multi-notch characteristic
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  • Wideband band-pass filter with multi-notch characteristic

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0041] Such as figure 1 As shown, a broadband bandpass filter with multi-notch characteristics, including:

[...

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Abstract

The invention discloses a wideband band-pass filter with multi-notch characteristic, comprising a dielectric substrate, a transmission line arranged on the upper surface of the dielectric substrate, four short-circuit branches connected in parallel to the transmission line, and at least one coplanar waveguide arranged on the lower surface of the dielectric substrate and connected in parallel with the four short-circuit branches. Signals in different frequency bands can be notched by the multiple coplanar waveguides of different sizes, and the bandwidth is large. The number of notched bands can be increased or decreased by increasing or decreasing the number of the coplanar waveguides. The wideband band-pass filter of the invention has the advantages of small size, simple and compact structure, easy processing, and low cost.

Description

technical field [0001] The invention relates to the technical field of electric appliances, in particular to a broadband band-pass filter with multi-notch wave characteristics. Background technique [0002] Nowadays, the rapid development of electronic communication technology has brought a lot of convenience to people's life. In particular, the radio wave frequency band covers a wide range, but the electromagnetic field interference in different frequency bands is also becoming more and more serious. Such as mobile communication 2G\3G\4G, global microwave interconnection (3.5GHz), wireless local area network (5.2GHz and 5.8GHz), radio frequency (6.8GHz) and other signals will cause interference to commonly used broadband (2GHz-18GHz) signal transmission systems , resulting in failure of the signaling system. At present, such as microstrip structure, via structure, etc. are usually used, but these structures are large in size, complex in structure, difficult to process, th...

Claims

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Application Information

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IPC IPC(8): H01P1/203
Inventor 吴华尧
Owner PHICOMM (SHANGHAI) CO LTD
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