Microwave split ring resonator sensor for determination of the fluids permittivity with measurement of human milk samples

M Navaei, P Rezaei, S Kiani - Radio Science, 2022 - ieeexplore.ieee.org
In this paper, the human milk dielectric constant by a microwave sensor has been evaluated.
The proposed sensor is result of coupling between a simple microstrip line and a split ring …

Design of a quint-band passive NGDC by using Taguchi's optimization method

L Zhang, D Lu, S Yang, Y Chen, B Li - AEU-International Journal of …, 2023 - Elsevier
This article presents a quint-band passive negative group delay circuit (Q-NGDC) by using
Taguchi's optimization method for the first time. This Q-NGDC mainly consists of a semi …

A compact passive quad-band negative group delay circuit with stepped impedance resonator and defected microstrip structure

L Zhang, S Yang, Q Guo, H Xiao, L Wang, B Li… - Radio …, 2023 - ieeexplore.ieee.org
Based on two-stage stepped impedance resonator (SIR) and defected microstrip structure
(DMS) with an E-shaped slot, a novel compact passive quad-band negative group delay …

[PDF][PDF] LITERATURE REVIEW ON RF AND MICROWAVE DESIGN OF PASSIVE MICROSTRIP CIRCUIT WITH BANDPASS TYPE NGD BEHAVIOR

E Sambatra, S Ngoho, FE Sahoa… - Smart Systems: Theory … - researchgate.net
Due to its counterintuitive aspects, the negative group delay (NGD) circuits remain an
unfamiliar electronic function to majority of radio frequency (RF) and microwave design …