A Negative Group Delay Circuit and Group Delay Method Based on Balun Structure

Abstract

The invention discloses a negative group delay circuit and a group delay method based on a balun structure, which are applied in the field of electronic communication technology. The existing negative group delay circuit is usually realized by a periodic circuit, and the size of the circuit and the wavelength of the working frequency Correlation, so it is difficult to realize miniaturization at a lower frequency, which affects the practical application of the circuit. The planar balun circuit used in the present invention includes: an unbalanced coil and two balanced coils; the unbalanced coil includes left and right Two symmetrical helical sub-coils; the two balanced coils are left-right symmetrical, and the two balanced coils are helical and are respectively embedded in the left and right helical sub-coils of the unbalanced coil; the structure of the present invention enables The negative group delay circuit can be processed and realized through the existing chip technology.

Description

A Negative Group Delay Circuit and Group Delay Method Based on Balun Structure technical field [0001] The present invention belongs to the technical field of electronic communication, in particular to a negative group delay circuit technology. Background technique [0002] For wideband signals, the transmission phase of different frequencies is not the same, this phenomenon is called group delay Phenomenon. The concept of group delay was first proposed by H.Nyuistand in the 1930s, and it is used in most traditional circuit elements. In the network composed of components (such as microwave transmission lines, capacitors or inductors, etc.), the transmission phase tends to change as the frequency increases. Therefore, the responses of these networks will exhibit a positive group delay characteristic TP53. However, with the advent of modern electronic systems The line speed is getting faster and the operating frequency is gradually increasing, and people often don't wan...

AI Technical Summary

Problems solved by technology

However, most of the existing negative group delay circuits are realized through periodic structures, and the circuits contain a large number of transmission lines related to the working wavelength, which leads to the large size of the circuit when the working frequency is low, and it is difficult to Meet the requirements of chip miniaturization

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