Integrated thin-film narrowband band-stop filter and design method thereof

A band-stop filter, thin-film technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of single suppression frequency band and complex device design, and achieve the effect of non-single frequency band, simple design, and reduced device volume.

Active Publication Date: 2017-02-22
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] In view of the above-mentioned problems or deficiencies, in order to solve the technical problem of complex design of common noise suppressor suppression frequency band

Method used

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  • Integrated thin-film narrowband band-stop filter and design method thereof
  • Integrated thin-film narrowband band-stop filter and design method thereof
  • Integrated thin-film narrowband band-stop filter and design method thereof

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Embodiment Construction

[0037] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0038] Create a new HFSS project and establish a coplanar waveguide model, such as image 3 shown. Through simulation optimization, the coplanar waveguide parameters are determined so that its characteristic impedance is 50Ω, which meets the impedance matching condition. Among them, the substrate is a single crystal Si substrate (relative permittivity ε r =11.9), the thickness is 500um; the metal material of the coplanar waveguide layer is Cu with a length of 4000um and a thickness of 2um, the width of the signal line in the middle is W=100um, the width of the ground lines on both sides is G=500um, and the gap between the signal line and the ground line is 55um .

[0039] Through SiO on the designed coplanar waveguide transmission line 2 Layer insulation, integrated CoNbZr alloy film. Its model structure is as Figure 4 As shown, the cross-sectional dia...

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Abstract

The invention belongs to the field of magnetic materials and components, and relates to a high-frequency microwave electromagnetic device and a high-frequency magnetic thin film, in particular to an integrated thin-film narrowband band-stop filter and a design method thereof. The magnetic thin film and a coplanar waveguide are integrated; a non-single frequency point narrowband band-stop filter is formed by applying angular magnetic fields to the plane of the thin film in different directions; the complicated design of a plurality of resonant cavities is overcome; the structure is simple; and the volume of the filter is reduced. An interference signal can be attenuated within super-high frequency (SHF, 3-30GHz) and extra-high frequency (EHF, 30-300GHz) ranges; a useful signal is not affected; and the requirement of suppressing noise harmonics in a non-single frequency band is met. Furthermore, manufacturing of the filter can be achieved by combining a thin film technology with a microelectronics lithography process; and the process is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of magnetic materials and components, and relates to a high-frequency microwave electromagnetic device and a high-frequency magnetic thin film, in particular to an integrated thin-film narrow-band band-stop filter and a design method thereof. Background technique [0002] With the emergence of high-power electronic devices, the increase in the operating frequency of electronic devices and the increase in the integration of electronic products, the problems of electromagnetic interference and electromagnetic noise have become increasingly prominent, and various high-frequency filters have emerged as the times require. [0003] However, due to the complexity of the electromagnetic environment of electronic equipment, there are often high-frequency interference harmonics in multiple frequency bands. In order to suppress its interference to useful signals, it is necessary to suppress some harmonics in the communication ban...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203
Inventor 张怀武李光兰饶毅恒金立川付小利杨青慧
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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