Grooved annular structure sensor based on microstrip line excitation

A microstrip line and sensor technology, applied in the fields of microwave measurement, biochemical detection, and sensor, can solve the problem that broadband measurement or sensing cannot be realized, and achieve the effect of broadband high-sensitivity sensing and high spatial resolution.

Inactive Publication Date: 2016-07-06
SHANGHAI UNIV
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Problems solved by technology

Traditional resonant sensors generally can only complete measurements at certain specific frequency points, and cannot achieve broadband measurement or sensing

Method used

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  • Grooved annular structure sensor based on microstrip line excitation
  • Grooved annular structure sensor based on microstrip line excitation
  • Grooved annular structure sensor based on microstrip line excitation

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Embodiment Construction

[0013] The present invention will be further elaborated below in conjunction with the accompanying drawings and preferred embodiments.

[0014] see figure 1 with figure 2 , a grooved ring structure sensor based on microstrip line excitation, including a grooved metal ring structure 1, a first dielectric layer 2, a second dielectric layer 10 and a ground plate 11 from bottom to top, the grooved metal ring structure The ring structure 1 includes an annular grooved metal strip 6, on which a plurality of grooves uniformly distributed along the circumferential direction are etched; between the first dielectric layer 2 and the second dielectric layer 10, a There is a microstrip line 8, and the microstrip line 8 is composed of a short metal patch and a disc branch structure 9 at the end of the metal patch; the microstrip line 8 can efficiently stimulate the artificial Surface plasmon waves.

[0015] In this embodiment, the groove width 3 of the grooved metal strip is 1.13mm, the ...

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Abstract

The invention discloses a grooved annular structure sensor based on microstrip line excitation. The grooved annular structure sensor based on microstrip line excitation comprises a grooved metal annular structure, a first dielectric layer, a second dielectric layer and an earth plate from bottom to top. The grooved metal annular structure comprises an annular grooved metal strip. Multiple grooves evenly distributed in the circumferential direction are etched in the annular grooved metal strip. A microstrip line is arranged between the first dielectric layer and the second dielectric layer. The microstrip line is formed by combining a short metal patch with a disc branch knot structure at the tail end of the metal patch. The microstrip line can efficiently excite artificial surface plasmon waves on the grooved metal annular structure. Compared with a traditional microwave sensor, the defect that a traditional resonant type sensor can only complete measurement at a certain specific frequency point is overcome, multiple resonant modes can be easily generated in a wide frequency band, the space resolution is high, and the sensor is very sensitive to the change of surrounding medium parameters and can achieve broadband high-sensitivity sensing.

Description

technical field [0001] The invention relates to a microstrip line excitation sensor, in particular to a grooved ring structure sensor based on microstrip line excitation, which can be widely used in the fields of sensors, microwave measurement, biochemical detection and the like. Background technique [0002] Localized surface plasmon resonance (LSPR) is a resonance phenomenon that occurs when the charge density oscillations in metal nanoparticles or discontinuous metal nanostructures are excited by incident photons. In the microwave segment, structured metal surfaces with microstructures such as grooves or hole arrays support the propagation of artificial localized surface plasmons (SpoofLSPs), whose electromagnetic properties are similar to those of localized surface plasmons. Based on artificial surface plasmons, similar LSPR phenomena can be realized in the microwave and millimeter wave bands. Traditional resonant sensors generally can only complete measurements at cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/552
CPCG01N21/554
Inventor 周永金杨保佳
Owner SHANGHAI UNIV
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