A negative group delay rectangular waveguide based on corrugated tantalum nitride slow wave structure
Sign Up to like & getrecommendations! Published in 2023 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.33695
Abstract: In this letter, a rectangular waveguide with controlled negative group delay (NGD) is proposed. The equivalent circuit of the structure is proposed and analyzed. The NGD value and NGD center frequency can be adjusted continuously… read more here.
Keywords: structure; negative group; rectangular waveguide; group ... See more keywords
Log‐periodic antenna effect on modulated signals in regions of negative group delay
Sign Up to like & getrecommendations! Published in 2024 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.34337
Abstract: In frequency regions where ultra‐wide band log‐periodic antennas exhibit negative group delay (NGD), the effect of higher‐order modes upon amplitude‐modulated signals is examined using convolution theory. It is shown that in these frequency regions, the… read more here.
Keywords: modulated signals; effect; group delay; negative group ... See more keywords
Elementary Negative Group Delay Filter Functions
Sign Up to like & getrecommendations! Published in 2024 at "Circuits, Systems, and Signal Processing"
DOI: 10.1007/s00034-024-02647-9
Abstract: A theoretical study of the behavior of some elementary first- and second-order functions, which are suitable for realizing negative group delay, is performed in this work. As both the gain and phase responses are simultaneously… read more here.
Keywords: filter; elementary negative; negative group; group delay ... See more keywords
Inaccurate group meta-perceptions drive negative out-group attributions in competitive contexts
Sign Up to like & getrecommendations! Published in 2019 at "Nature Human Behaviour"
DOI: 10.1038/s41562-019-0766-4
Abstract: Across seven experiments and one survey ( n = 4,282), people consistently overestimated out-group negativity towards the collective behaviour of their in-group. This negativity bias in group meta-perception was present across multiple competitive (but not cooperative)… read more here.
Keywords: group attributions; group; group meta; meta perceptions ... See more keywords
Noise-like pulse generation by amplified well-defined pulse in an optical fiber with negative group velocity dispersion
Sign Up to like & getrecommendations! Published in 2024 at "Laser Physics Letters"
DOI: 10.1088/1612-202x/ad3a57
Abstract: We experimentally and numerically demonstrate that noise-like pulses (NLPs) can be generated by pumping well-defined pulses (WDPs) into an optical fiber amplifier at a wavelength in the region of negative group velocity dispersion. Through investigating… read more here.
Keywords: noise like; generation; well defined; optical fiber ... See more keywords
P114 Which antibody is more important for radiographic erosions in RA?
Sign Up to like & getrecommendations! Published in 2020 at "Rheumatology"
DOI: 10.1093/rheumatology/keaa111.112
Abstract: The presence of bony erosions in patients with RA is a marker of disease severity and once present they are largely irreversible. Previous studies have shown that those who are RF positive have more erosions… read more here.
Keywords: radiographic erosions; antibody; duration; group ... See more keywords
A Compact Transmission-Line Self-Matched Negative Group Delay Microwave Circuit
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2761890
Abstract: 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… read more here.
Keywords: group delay; transmission; matched negative; circuit ... See more keywords
Lossy Coupling Matrix Synthesis Approach for the Realization of Negative Group Delay Response
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Access"
DOI: 10.1109/access.2017.2780888
Abstract: In this paper, a systematic synthesis approach is proposed for achieving negative group delay responses using lossy coupling matrix. It is mathematically proved that, for a passive and reciprocal network, loss is the necessary condition… read more here.
Keywords: synthesis; synthesis approach; group delay; negative group ... See more keywords
A Novel Fully Reconfigurable Non Foster Capacitance Using Distributed Negative Group Delay Networks
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2927259
Abstract: A novel reconfigurable non-Foster capacitance (NFC) using negative group delay (NGD) circuit is presented in this paper. The NGD circuit is based on a multi-order distributed amplifier which is used to achieve both NGD performance… read more here.
Keywords: foster capacitance; group delay; reconfigurable non; negative group ... See more keywords
Design, Modeling and Synthesis of Negative Group Delay IL-Shape Topology
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2948843
Abstract: This paper introduces a negative group delay (NGD) theory of passive topology presenting “IL”-shape geometry. The two-port topology is comprised of a coupled line with an open- and stub-loaded terminations. After introduction of the electrical… read more here.
Keywords: topology; negative group; shape; group delay ... See more keywords
CSRR DGS-Based Bandpass Negative Group Delay Circuit Design
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3249968
Abstract: The unfamiliar negative group delay (NGD) circuit is the less familiar function for most of RF and microwave design engineers. Among the existing types, the bandpass (BP) NGD type circuits are the most convenient for… read more here.
Keywords: csrr; negative group; circuit; dgs ... See more keywords