Spoof surface plasmon polaritons (SSPPs) type microwave band-pass filter

A technology of plasmonic polariton and artificial surface, which is applied in the field of ionic polariton microwave bandpass filter, which can solve the problems of electromagnetic noise interference, unstable operation of microwave circuits or microwave devices, etc., and achieve excellent stop band characteristics and practical application in large projects value, the effect of optimizing filter characteristics

Inactive Publication Date: 2016-07-20
LIUPANSHUI NORMAL UNIV
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a microwave bandpass filter composed of artificial surface plasmon type transmission line. This transmission line filter can not only solve a filter selection scheme, but also solve th...

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  • Spoof surface plasmon polaritons (SSPPs) type microwave band-pass filter
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  • Spoof surface plasmon polaritons (SSPPs) type microwave band-pass filter

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Embodiment Construction

[0018] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] The present invention designs a new type of artificial surface plasmon (SSPPs) microwave filter, especially a microwave bandpass filter with a composite groove structure. The passband range and stopband suppression characteristics of the filter can be accurately adjusted by adjusting the number of subslots in the filter mother slot and their geometrical dimensions. Especially, the opening of the subslot structure does not increase the overall geometrical size of the filter. While ensuring miniaturization, the filtering characteristics of the band-pass filter are further optimized.

[0020] A specific implementation is that the filter adopts a three-section structure. The first section is a coplanar waveguide section (CPW section) with a lengt...

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Abstract

The present invention provides an SSPPs type microwave band-pass filter, and relates to the microwave filter technology field. The filter adopts a three-segment type structure, the first segment is a coplanar waveguide segment, the second segment is a transition segment transformed from the coplanar waveguide segment to an SSPPs segment, and the third segment is the SSPPs segment, wherein the SSPPs segment adopts a novel child-mother composite groove structure characterized by arranging the child groove structures which are periodic, are in mirror symmetry and are arranged parallelly in the mother grooves. By the number and the geometric sizes of the child grooves, the sub-wavelength bound effect of a microwave electric field can be improved further, and the band-notched characteristic of the SSPPs filter is more excellent. The filter can be widely used in the microwave communication systems, such as the micro-strip circuits of L-wave band to X-wave band, a microwave base station, etc.

Description

Technical field [0001] The invention relates to the technical field of microwave filters, in particular to an artificial surface plasmon type microwave bandpass filter. Background technique [0002] Surface plasmon polaritons (SPPs) are surface electromagnetic waves that propagate along the metal-dielectric interface. With the continuous improvement of the integration of microwave integrated circuits today, a series of technical problems have appeared. For example, when the line-to-line spacing in the circuit is small to a certain level, electromagnetic noise interference between lines will appear, resulting in microwave circuits or microwaves. The device is unstable. [0003] The artificial surface plasmon (Spoofsurfaceplasmon polaritons, SSPPs) circuit can localize the microwave electric field in a sub-wavelength size, so it has a good anti-electromagnetic interference ability and can well meet the requirements of the next generation of microwave communication devices. Summary ...

Claims

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Application Information

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IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 胡明哲
Owner LIUPANSHUI NORMAL UNIV
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