Multi-port broadband cancellation type sensor based on composite right/left hand transmission line

A technology that combines left and right hands and transmission lines. It is used in instruments, scientific instruments, and material analysis using microwave means. It can solve the problems of large size and narrow bandwidth, and achieve the effect of accurate extraction, wide frequency band, and reduced volume.

CN114047233APending Publication Date: 2022-02-15LUOYANG NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-02-15

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Abstract

The invention discloses a multi-port broadband cancellation type sensor based on a composite right / left hand transmission line. The multi-port broadband cancellation type sensor comprises a first annular coupler, a second annular coupler and two connecting lines; two ends of the two connecting lines are respectively connected with two signal output ports of the first annular coupler and a signal input port of the second annular coupler, and the other three ports of the first annular coupler and the second annular coupler can be set as ports of the sensor or tail end loading matching loads according to requirements, so the sensor can be freely tuned among double ports, three ports, four ports and five ports; and composite left and right hand branches are respectively loaded in the two connecting lines and are used as a test area, a microfluidic channel is arranged in the test area, and the microfluidic channel is provided with a liquid sample inlet and a liquid sample outlet. The sensor is high in sensitivity, wide in frequency band, simple in detection method and easy to integrate, and has the potential of being combined with other devices to form a micro analysis system.
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Description

technical field

[0001] The invention belongs to the technical field of microwave measurement, and in particular relates to a multi-port broadband cancellation sensor based on a composite left and right hand transmission line. Background technique

[0002] As the volume of the measured object decreases, the sensitivity of the sensor becomes one of the key design parameters. For example, when detecting components such as cell suspensions, particle recombination media, and DNA macromolecular recombination, traditional test solutions cannot be identified due to sensitivity. Minor changes in these components. An effective solution is to use a destructive sensor. This type of sensor uses signal interference and destructive technology to effectively eliminate the background noise of the transmission line and realize strong testing under weak background signals. This technology has been loved by many researchers in the world, and it has realized the test of the dielectric propertie...

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...