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Non-contact adjustable negative group delay circuit based on dielectric resonator and construction method

A dielectric resonator and negative group delay technology, which is applied to circuits, electrical components, connecting devices, etc., to achieve good coupling effects, large negative group delay values, and high coupling strength

Active Publication Date: 2022-03-11
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a non-contact adjustable negative group delay circuit and construction method based on a dielectric resonator to solve the problems in the prior art

Method used

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  • Non-contact adjustable negative group delay circuit based on dielectric resonator and construction method
  • Non-contact adjustable negative group delay circuit based on dielectric resonator and construction method
  • Non-contact adjustable negative group delay circuit based on dielectric resonator and construction method

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Embodiment

[0067] As shown in Figure 2(a), when the dielectric resonator is placed near the microstrip line, it will couple with the fringe magnetic field of the microstrip line, and the electrical lengths of the microstrip lines on both sides of the dielectric resonator are respectively θ 1 and θ 2 , the distance between the center point of the dielectric resonator and the microstrip line is d, that is, the coupling distance d. One end of the microstrip line is connected to an input voltage source and a 50Ω load, the other end of the input voltage source is grounded, the other end of the microstrip line is connected to a 50Ω output load, and the other end of the output load is grounded. The circuit in Figure 2(a) can be equivalent to the RLC circuit shown in Figure 2(b). When the dielectric resonator is coupled, it appears as a series load on the microstrip line, and the dielectric resonator can be equivalent to a circuit consisting of The parallel circuit composed of equivalent induct...

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Abstract

The invention discloses a non-contact adjustable negative group time delay circuit based on a dielectric resonator and a construction method, and particularly relates to the technical field of microwave engineering.The non-contact adjustable negative group time delay circuit comprises the dielectric resonator, a dielectric substrate, a dielectric cover plate and at least one supporting column, and the dielectric substrate and the dielectric cover plate are connected through the supporting columns in a parallel posture; the upper end and the lower end of each support column are respectively perpendicular to the dielectric substrate and the dielectric cover plate, the input return loss, the insertion loss and the primary group delay function of the coupling circuit are obtained through calculation, each parameter value in the corresponding non-contact adjustable negative group delay circuit is obtained, and the corresponding non-contact adjustable negative group delay circuit is further obtained. According to the technical scheme, the multi-frequency negative group delay circuit has the advantages of being better in coupling effect, larger in negative group delay value and wider in adjustable range, and the multi-frequency negative group delay circuit can be achieved through cascading.

Description

technical field [0001] The invention relates to the technical field of microwave engineering, in particular to a non-contact adjustable negative group delay circuit based on a dielectric resonator and a construction method. Background technique [0002] In modern communication systems, the group delay effect caused by complex circuit interconnection structures is one of the important reasons for signal distortion. In order to avoid signal distortion caused by group delay, a negative group delay circuit is often used as an equalizer to compensate for the variation of group delay. Negative group delay means that the group delay is negative, that is, the abnormal electromagnetic propagation phenomenon that the output signal occurs earlier than the input signal. The parameter of group delay refers to the negative derivative of the phase with respect to the angular frequency. The phase of the negative group delay characteristic will have a positive rate of change with frequency....

Claims

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Application Information

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IPC IPC(8): H01P5/12H01P3/08H01P11/00
CPCH01P5/12H01P3/08H01P11/00
Inventor 万发雨顾韬琛杜宏宇
Owner NANJING UNIV OF INFORMATION SCI & TECH
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