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Comment on: Fibrinogen Changes Before and After Intravenous Thrombolysis as Predictors of Cerebral Injury and Clinical Outcomes in Acute Ischemic Stroke—The 24‐h Time‐Point May be a Pro‐Thrombotic Blind Spot: Check 6‐h Fibrinogen Rebound to Catch Early Re‐Occluders

Annals of Clinical and Translational Neurology, EarlyView.
Qichao Fang, Luting Ying, Yongjin Gong
wiley   +1 more source

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

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

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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

Monolithic Phase Shifter Study

1987
Abstract : Modeling and testing of monolithic coplanar waveguide (CPW) phase shifters using both optical and Schottky-contact control techniques have been performed. Simulation work on a periodically illuminated structure has been completed, showing that some improvement in performance may be possible, although with a reduction in frequency bandwidth ...
T. Itoh, D. P. Neikirk
openaire   +1 more source

Driverless Phase Shifters

1973 IEEE G-MTT International Microwave Symposium, 1973
Characteristics of two novel microwave semiconductor switching devices which do not require forward current for switching are described. These devices effectively eliminate the need for drivers in phased array antennas; hence, greatly reducing the cost of phased array RADARs.
R.W. Burns, R.L. Holden, R. Tang
openaire   +1 more source

Wide-band monolithic phase shifter

IEEE Transactions on Electron Devices, 1984
A wide-band monolithic phase shifter operating in the 2-8- GHz frequency range is described. Six GaAs FET's per bit are used as switch elements in a bridge configuration which alternatively becomes a high-pass or a low-pass section. Their low-impedance state is modeled as a resistor, the high-impedance state as a combination of capacitors and resistors.
Y. Ayasli, S.W. Miller, R. Mozzi, L.K. Hanes   +3 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

Achromatic optical phase shifter–modulator

Optics Letters, 2001
We propose and demonstrate, theoretically and experimentally, a novel achromatic optical phase shifter-modulator based on a frequency-domain optical delay line configured to maintain zero group delay as variable phase delay is generated by means of tilting a mirror.
Zvyagin, A.V., Sampson, David
openaire   +3 more sources

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