Results 51 to 60 of about 1,363,250 (192)
IEEE Access, 2020 A theoretical investigation of distributed microwave circuit built with Ti-shape topology is developed. The topology under study consists of neighbored T- and i-shape interconnect lines.
Xiang Zhou +7 more
doaj +1 more source
IEEE Access, 2022 This paper investigates on the theorization, design, fabrication and measurement of original phase shifter (PS) operating with two-step stair phase behavior.
Blaise Ravelo +7 more
doaj +1 more source
, 2008 Application of negative group delay active circuits to the design of broadband and constant phase shifters, B. Ravelo, M. Le Roy, and A. Perennec, Microwave and Optical Technology Letters, Vol. 50, No.
Le Roy, Marc +2 more
core +3 more sources
Association between time to reperfusion and outcome is primarily driven by the time from imaging to reperfusion [PDF]
, 2016 Background and Purpose A progressive decline in the odds of favorable outcome as time to reperfusion increases is well known. However, the impact of specific workflow intervals is not clear.; Methods We studied the mechanical thrombectomy group (n=103 ...
Cerda, Neus +8 more
core +2 more sources
IEEE Access, 2020 A dual-band negative group delay (NGD) microwave circuit with low signal-attenuation and arbitrary frequency ratio is proposed. Closed-form analytical equations are derived for the design of the proposed dual-band negative group delay circuit (NGDC) with
Yuwei Meng +5 more
doaj +1 more source
Electromagnetic Cavity Resonance Equalization With Bandpass Negative Group Delay
IEEE Transactions on Electromagnetic Compatibility, 2021 This article deals with an original equalization method of 3-D electromagnetic (EM) cavity resonance by using bandpass negative group delay (NGD) function. Based on the equivalent circuit, the S -matrix model of the equalized EM cavity is introduced. The design equations of the NGD function are established in function of the cavity physical parameters.
Ravelo, Blaise +3 more
openaire +3 more sources
Changes in health-related quality of life in older patients with acute myocardial infarction or congestive heart failure: a prospective study [PDF]
, 2001 OBJECTIVES: To study changes in health-related quality of life (HR-QL) following acute myocardial infarction (AMI) or congestive heart failure (CHF) in older people (greater than or equal to 57 yr).DESIGN: Prospective cohort Study.SETTING: Primary ...
Kempen, GIJM +5 more
core +8 more sources
Implementing negative group delay by using SSPP units with equivalent single negative permeability
Alexandria Engineering JournalClassic circuits for spoof surface plasmon polaritons (SSPPs) usually introduce positive group delay, which leads to problems such as broadening of the pulse signal. In this regard, the SSPP structure with negative group delay (NGD) can be constructed to
Guodong Lu, Yuheng Li, Weiwen Li
doaj +1 more source
IEEE Access, 2022 This paper develops an original design method of high-pass (HP) negative group delay (NGD) integrated circuit (IC). The considered HP-NGD IC is based on a passive topology which is essentially composed of resistor-inductor (RL) network.
Mathieu Guerin +9 more
doaj +1 more source
, 2008 International audienceThis paper presents a new method developed to reduce the propagation delay by using a negative group delay (NGD) active circuit. Analytical expressions are proposed to demonstrate the validity of our approach in the case of an RC ...
Le Roy, Marc +2 more
core +3 more sources