Abstract
This paper introduces a design method of simple bandpass (BP) negative group delay (NGD) topology. The fundamental specifications of BP NGD function are defined. The NGD passive topology consists of parallel resistance associated with an open-ended microstrip stub. The NGD properties and characterization with respect to the constituting stub parameters are established. The validations are performed with theoretical calculated and simulated GD, transmission and reflection coefficients. The BP NGD circuit can be useful for the improvement of phase linearity and GD equalization of future 5G microwave devices.
Highlights
The twenty-first century differs from the previous ones under the incessant increase of tremendous communications initially between mankind
An investigation of BP negative group delay (NGD) function generated with open-ended stub based passive topology is introduced
The NGD circuit is constituted by a shunt parallel resistor ended by an open-ended stub
Summary
The twenty-first century differs from the previous ones under the incessant increase of tremendous communications initially between mankind. This later application is implemented with the reduction of the propagation delay based on the NGD function [21] Despite these tentative applications, so far, the familiarity of non-specialist RF and microwave engineers to the NGD function necessitates further research works. The familiarity of non-specialist RF and microwave engineers to the NGD function necessitates further research works For this reason, the present paper is focused on the design method of bandpass NGD circuit for 5G frequency band. Because of the unfamiliarity of RF/microwave design engineers and research communities to this fascinating function, it would be necessary to highlight the NGD function meaning In this way, the analogy between the filter and NGD functions was initiated in [31, 32]. This paper is an extension of the research work published in [33] with further detailed description of the BP NGD specifications, theoretical design and potential applications
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