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Novel ultra-wideband low-pass filter with double trapped waves

A band-pass filter and ultra-broadband technology, applied in waveguide-type devices, waveguides, resonators, etc., to achieve the effects of easy mass production, high adjustability, and favorable integration

Inactive Publication Date: 2019-10-11
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional microwave low-pass filter consists of a step impedance structure and a defect ground structure, etc.

Method used

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  • Novel ultra-wideband low-pass filter with double trapped waves
  • Novel ultra-wideband low-pass filter with double trapped waves
  • Novel ultra-wideband low-pass filter with double trapped waves

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Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elucidated below in conjunction with specific embodiments.

[0026] Specific implementation:

[0027] As shown in Figure 1: an ultra-wideband bandpass filter with double notches, its composition includes: dielectric substrate, coplanar waveguide feeder strip line, coplanar waveguide ground plane, flared surface, trapezoidal hole arrangement, spoof SPPs waveguide strip and ring resonator, described coplanar waveguide feed stripline, coplanar waveguide ground plane, flared face, trapezoidal hole arrangement, spoof SPPs waveguide strip and ring

[0028] The resonator is printed on the upper surface of the dielectric substrate, the spoof SPPs waveguide strip is located in the middle of the dielectric substrate, and the ring resonance

[0029] The filter is located directly above the spoof SPPs waveguide and h...

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PUM

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Abstract

The invention discloses an ultra-wideband low-pass filter with double trapped waves, belongs to a filter used in the technical field of microwaves, and particularly relates to a planar structure and aspoof SPPs metamaterial. The filter comprises a dielectric substrate (1), coplanar waveguide feed strip lines (2a), coplanar waveguide ground planes (2b), trapezoidal hole arrays (3a), flared planes(3b), a spurious SPPs waveguide band (4a) and an annular resonator (4b), wherein the spoof SPPs waveguide band is located at the middle of the surface of the dielectric substrate; the annular resonator is located right above the spurious SPPs waveguide and a gap is formed between the annular resonator and the spurious SPPs waveguide; the two trapezoidal hole arrays are respectively positioned at the left end and the right end of the spoof SPPs and are tightly connected with the spoof SPPs; the four flared planes are respectively located at two sides of the left and right trapezoidal holes andform gaps with the left and right trapezoidal holes, the coplanar waveguide feed strip lines are led to the trapezoidal holes from the edge of the dielectric substrate and are closely connected with the trapezoidal holes, and the two coplanar waveguide ground planes are respectively fixed at two sides of the coplanar waveguide feed strip lines and form gaps with the coplanar waveguide feed strip lines. The filter is simple in structure, small in size, convenient to machine and low in cost.

Description

technical field [0001] The invention belongs to the low-pass filter used in the field of microwave technology, in particular to planar structures and artificial surfaces, etc. [0002] Ionic metamaterials. Background technique [0003] Surface Plasmon Polarions (SPPs for short) is a mixed excited state of electrons and photons on the interface between metal and medium (usually air), which is confined to the vicinity of the metal and medium surface. surface waves. Since SPPs can break through the diffraction limit and can achieve the confinement of sub-wavelengths of electromagnetic fields, they are widely used in biomedical detection, near-field optical microscopy, optoelectronics, solar optoelectronics, and nanophotonics. However, in the microwave frequency range, the metal behaves as a perfect electrical conductor (PEC), and there are no SPPs on the interface with the medium, and its plasma frequency generally exists in the visible and ultraviolet bands. In 2004, Profes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P3/00H01P7/00
CPCH01P1/203H01P3/003H01P7/00
Inventor 肖丙刚
Owner CHINA JILIANG UNIV
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