Unlock instant, AI-driven research and patent intelligence for your innovation.

Surface plasmon polariton band elimination filter with tunable center frequency

A surface plasmon, band-stop filter technology, applied in the field of radio frequency microwave, can solve the problems of limited center frequency tuning, narrow operating frequency band, etc., to achieve the effect of reducing circuit area, low manufacturing cost, and compact overall structure

Inactive Publication Date: 2020-04-17
CETC GUOJI SOUTHERN GRP CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a surface plasmon band-stop filter with tunable center frequency, which solves the problems of narrow working frequency band and limited center frequency tuning of existing SPP band-stop filters

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface plasmon polariton band elimination filter with tunable center frequency
  • Surface plasmon polariton band elimination filter with tunable center frequency
  • Surface plasmon polariton band elimination filter with tunable center frequency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] This embodiment provides a SPP band-stop filter with tunable center frequency, such as figure 1 As shown, including coplanar waveguide I, electromagnetic wave mode converter II, SPP transmission line III and high dielectric constant barium strontium titanate ((Ba x Sr 1-x )TiO 3 , referred to as writing BST) media block IV.

[0029] The SPP band-stop filter is a two-port network, one end is used as the input end, and the other end is the output end, which can be used interchangeably.

[0030] The coplanar waveguide I includes a central metal strip on the same plane, and two ground planes (GND for short) are symmetrically constructed on both sides of the central metal strip. The electromagnetic wave propagating in the coplanar waveguide is a TEM wave whose electric field component and magnetic field component are both perpendicular to the direction of propagation. Selecting the appropriate size can achieve good broadband impedance matching between the coplanar wavegu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a surface plasmon polariton band elimination filter with tunable center frequency. The surface plasmon polariton band elimination filter comprises a coplanar waveguide, an electromagnetic wave mode converter, an SPP transmission line and a high dielectric constant dielectric block. The high-dielectric-constant BST dielectric block sensitive to temperature change and external electric field change is embedded into the gap of the SPP transmission line for the first time, and the purpose that the center frequency of the SPP band elimination filter is tunable is flexibly achieved; the SPP band elimination filter provided by the invention is simple and compact in structure and convenient to process and manufacture, and has novelty and excellent scientific application value in the field of radio frequency microwaves.

Description

technical field [0001] The invention belongs to the field of radio frequency microwave technology, and in particular relates to a surface plasmon band rejection filter with tunable center frequency. Background technique [0002] Surface plasmon polaritons (SPP for short) means that when a high-frequency electromagnetic wave is incident on the interface between a metal and a dielectric, the electrons on the metal surface will oscillate collectively, and the electromagnetic wave will couple with the free electrons on the metal surface. It is manifested as a surface wave propagating along the interface between metal and medium (usually propagating in TM mode), with slow wave characteristics, field confinement effect and excellent characteristics of breaking through the diffraction limit. Due to the ability to limit electromagnetic waves in the sub-wavelength range with high intensity, the use of SPP can realize the miniaturization of electronic components, realize SPP devices w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 罗将李健康徐波
Owner CETC GUOJI SOUTHERN GRP CO LTD