Results 231 to 240 of about 155,552 (273)

Myocardial blood flow quantification in patients with an implanted cardiodefibrillator during stress and at rest using a wideband perfusion pulse sequence: an initial feasibility study. [PDF]

J Cardiovasc Magn Reson
Fan L, Jimenez MD, Bishara D, Urban J, Hong K, Culver AE, Collins JD, Hsu LY, Wang S, Patel AR, Aboyewa OB, Topel C, Lee DC, Kim D.   +13 more
europepmc   +1 more source

Flexible four-port MIMO antenna loaded with frequency selective surface for on-body applications. [PDF]

Sci Rep
Sharma M, Singh DK, Sharma K, Awasthi S, Gill R, Ali T.   +5 more
europepmc   +1 more source

Design of a frequency selective rasorber for wideband transmission and dual-band absorption in L-S-C bands. [PDF]

Sci Rep
Pascarella F, Monorchio A, Brizi D.
europepmc   +1 more source

Meta-encryptor with multi-dimensional security architecture for wireless communications. [PDF]

Nat Commun
Liu Y, Gao W, Fu X, Jin L, Han C, Zhang L, Cui TJ.   +6 more
europepmc   +1 more source

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Wideband RELAX and wideband CLEAN for aeroacoustic imaging

The Journal of the Acoustical Society of America, 2003
Microphone arrays can be used for acoustic source localization and characterization in wind tunnel testing. In this paper, the wideband RELAX (WB-RELAX) and the wideband CLEAN (WB-CLEAN) algorithms are presented for aeroacoustic imaging using an acoustic array.
Yanwei, Wang, Jian, Li, Petre, Stoica, Mark, Sheplak, Toshikazu, Nishida   +4 more
openaire   +2 more sources

Wideband electromechanical stimulator

Medical & Biological Engineering, 1976
An electromechanical stimulator with wideband characteristics is described. Nonlinear control techniques have been used to achieve a fast rise time, a speedy settling time, and a very small steady-state error. The device has been used in quantitative investigations on cutaneous receptor units.
M J, O'Connell, F, Khalafalla, S, Lal
openaire   +2 more sources

Wideband local oscillator design for wideband transceivers

2011 IEEE International RF & Microwave Conference, 2011
The wideband transceivers like the software defined radio require designing wideband RF hardware covering octave bands. The local oscillator of the mixer should be a wideband frequency synthesizer. Building on the theory of oscillations in the voltage controlled oscillator, the paper reviews the concept of negative resistance in the transistor circuit ...
Mehul R. Naik, C H Vithalani
openaire   +1 more source

Wideband and ultra wideband direct chaotic communications

ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605), 2003
We introduce a high rate wireless communication scheme, based on wideband and ultra wideband chaotic carriers, generated directly in the microwave frequency band. The main features and performance of the proposed scheme are discussed. An experimental model of the system is designed and a series of experiments, demonstrating wireless transmission with ...
A.S. Dmitriev, A.I. Panas, D.Yu. Puzikov
openaire   +1 more source

Wideband Antennas

2021
Wideband operation is often desired for modern wireless systems, applications include, data hungry multi-standard wireless communication systems, ultrahigh-resolution radars desired for connected and autonomous driving applications, imaging systems for healthcare or security applications.
Naeem, Umair, Fusco, Vincent
openaire   +2 more sources