Results 11 to 20 of about 446,810 (257)
Anticipation and negative group delay in a retina [PDF]
Physical Review E, 2021 The mechanism of negative group delay (NGD) is used to understand the anticipatory capability of a retina. Experiments with retinas from bull frogs are performed to compare with the predictions of the NGD model. In particulars, whole field stochastic stimulation with various time correlations are used to probe anticipatory responses from the retina. We
Po-Yu Chou +5 more
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Frequency-Selective Surface Based on Negative-Group-Delay Bismuth–Mica Medium
Photonics, 2023 Negative group delay may be observed in dispersive media with anomalous dispersion in a certain frequency range. The fact that an outgoing wave packet precedes an incoming one does not violate the causality principle but is only a consequence of a ...
Anton D. Zaitsev +4 more
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IEEE Access, 2021 A transient study of bandpass (BP) negative group delay (NGD) function is devoted in this paper. The transient analysis is applied to an original topology of NGD barcode-shape microstrip circuit.
Lili Wu +8 more
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Negative group-delay assisted anomalous propagation in stacked Split Ring Resonator array
Results in Optics, 2023 This paper explores a novel method to achieve negative group delay-assisted anomalous propagation without significant signal attenuation using stacked Split-Ring Resonator (SRR) array in the microwave regime.
V.P. Sarin +2 more
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Negative group delay synthesiser
Electronics Letters, 1993 A network that synthesises negative group delay is presented. The conditions required for achieving negative group delay, with a simple R-L-C tuned circuit, are briefly introduced. A hybrid MIC realisation of the network, operating at 1 GHz, is described and its measurements are reported.
S. Lucyszyn +2 more
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A Compact Transmission-Line Self-Matched Negative Group Delay Microwave Circuit
IEEE Access, 2017 A compact self-matched negative group delay (NGD) circuit without the need for an external matching circuit is proposed. The proposed NGD circuit is composed of two-port open-circuited coupled lines, a short-circuited transmission line and two resistors ...
Te Shao +4 more
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A Full-Passband Linear-Phase Band-Pass Filter Equalized With Negative Group Delay Circuits
IEEE Access, 2020 A full-passband linear-phase band-pass filter (BPF) equalized with negative group delay circuits (NGDC) is proposed. The NGDCs are utilized to suppress the salient group delay at the edge of the passband of the traditional BPF for achieving the full ...
Te Shao +4 more
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A Compact Dual-Band Differential Negative Group Delay Circuit With Wideband Common Mode Suppression
IEEE Journal of Microwaves, 2022 A compact dual-band differential negative group delay (DNGD) circuit with wideband common mode suppression is proposed. Two small 180° phase shift swap structures of double-sided parallel striplines (DSPS) are adopted to realize intrinsic wideband
Zhongbao Wang +3 more
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Analytical Design of Dual-Band Negative Group Delay Circuit With Multi-Coupled Lines
IEEE Access, 2020 This paper develops an innovative design method of a multi-coupled line (CL) topology of low-loss dual band negative group delay (NGD) circuit. The proposed is conceived using three transmission lines (TLs) with different length in which integrate two ...
Xiang Zhou +7 more
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Novel Gysel Power Dividers with Negative Group Delay Characteristics
International Journal of Antennas and Propagation, 2019 A novel Gysel power divider with negative group delay (NGD), good matching, and low insertion loss is proposed. Resistors connected with short-circuited coupled lines (RCSCL) are shunted at output ports of the Gysel power divider to obtain NGD ...
Zihui Zhu +5 more
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