Results 151 to 160 of about 2,596 (216)

Facilitating Expedited Drug Approval—the Past, Present, and Future of Clinical Trials for Pediatric Rheumatic Disease

Arthritis Care &Research, EarlyView.
Pamela F. Weiss, Hermine I. Brunner
wiley   +1 more source

Experimental coherent one-way quantum key distribution with simplicity and practical security. [PDF]

Sci Adv
Cao XY, Sun XR, Li MY, Lu YS, Yin HL, Chen ZB.   +5 more
europepmc   +1 more source

Spatial-Wavelength Multiplexing Error-Controlled Photonic Analog Computing System. [PDF]

Adv Sci (Weinh)
Zhu T, Zhu B, Zhang S, Li K, Wu X, Pi Y, Yan J, Chen D, Guo B, Xiao X, Wang L, Xu X, Xue X, Huang S, Cao Z, Yu S.   +15 more
europepmc   +1 more source

Highly uniform thermally undercut silicon photonic devices in a 300 mm CMOS foundry process. [PDF]

Sci Rep
Parsons R, Jang K, Wang Y, Novick A, Smith AM, Tison CC, Gebregiorgis Y, Deenadayalan V, Niekerk MV, Carpenter L, Ngai T, Leake G, Coleman D, Meng X, Preble S, Fanto ML, Bergman K, Rizzo A.   +17 more
europepmc   +1 more source

Advances in Digital Holography, 3-D Imaging, and Optical Information Processing: introduction. [PDF]

Biomed Opt Express
Nehmetallah G, Miccio L, Latychevskaia T, Nishchal NK, Luo Y.   +4 more
europepmc   +1 more source

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Phase Shifter Merging

Journal of Electronic Testing, 2005
Phase shifters are used in conjunction with Linear Feedback Shift Registers and Cellular Automata in order to impose sufficient channel separations on the bit sequences produced by their successive cells. The aim is to reduce structural correlations and/or linear dependencies that are problematic for pseudorandom and pseudoexhaustive built-in test ...
openaire   +1 more source

Integrated Adjustable Phase Shifters

IEEE Microwave Magazine, 2010
When examining a monthly bank account statement, it is not only the number below the bottom line that matters. Whether that number has a minus or plus in front of it is crucial. For many technical problems, the sign matters as well. In circuits, we can change the sign by means of phase shifters.
Ellinger F., Mayer U., Wickert M., Joram N., Wagner J., Eickhoff R., Santamaria I., Scheytt C., Kraemer R.   +8 more
openaire   +1 more source

Arbitrary phase shifters with decreasing phase

2015 38th International Conference on Telecommunications and Signal Processing (TSP), 2015
This paper describes a new class of the versatile network elements for analog signal processing; two-ports with frequency dependent phase shift which starts with arbitrary value and tends towards different but still arbitrary value. Speaking in terms of the complex frequency response plotted in polar coordinates the characteristics can connect any two ...
openaire   +1 more source

The Comparison between Slide Phase Shifter and Pointer Phase Shifter

2007 International Conference on Microwave and Millimeter Wave Technology, 2007
The pointer phase shifter and slide phase shifter have been widely utilized in electrically adjustable antennas of mobile communication base-stations. We propose the equivalent-circuit models of the phase shifters, to analyze them. The simulation results are compared to show their different transmission and phase shifting performance, which is useful ...
Shuai Dong, Jing-Ke Zhou, Qing-Xin Chu
openaire   +1 more source

Phase shifters for dielectric guides

IEE Proceedings H Microwaves, Antennas and Propagation, 1991
A phase shifter has been designed to give a constant phase over the octave bandwidth 70-140 GHz in dielectric guide. The phase shifter was designed for use in a multistate reflectometer in dielectric guide, though other applications are possible. The multistate reflectometer required two less power meters than a previous six-port reflectometer.
R.J. Collier, M.F. D'Souza
openaire   +1 more source