Results 241 to 250 of about 2,229,339 (290)

Wideband versatile radio-frequency spectrum analyzer

Optics Letters, 2003
Operation of a wideband, versatile optical spectrum analyzer for radio-frequency (RF) signals is demonstrated. The device is based on spectral hole burning (SHB). The demonstration features 2.3-GHz instantaneous bandwidth, 500-kHz resolution, and a 32-dB dynamic range. A true RF signal, transferred to the optical carrier with the help of a Mach-Zehnder
V, Lavielle, I, Lorgeré, J L, Le Gouët, S, Tonda, D, Dolfi   +4 more
openaire   +2 more sources

SPECTRUM OF RANDOMLY FREQUENCY MODULATED SIGNALS

Nonlinear Dynamics of Electronic Systems, 2000
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MAZZINI, Gianluca, R. ROVATTI, SETTI, Gianluca   +2 more
openaire   +2 more sources

Exponential Frequency Spectrum in Magnetized Plasmas

Physical Review Letters, 2008
Measurements of a magnetized plasma with a controlled electron temperature gradient show the development of a broadband spectrum of density and temperature fluctuations having an exponential frequency dependence at frequencies below the ion cyclotron frequency.
D C, Pace, M, Shi, J E, Maggs, G J, Morales, T A, Carter   +4 more
openaire   +2 more sources

Frequency-division spread-spectrum makes frequency synchronisation easy

2012 IEEE Global Communications Conference (GLOBECOM), 2012
Frequency division spread spectrum system (FD/S3) has been recently proposed, which uses frequency domain spreading codes and can allow frequency offsets between users. Motivated by the conventional time-domain code acquisition, we propose a frequency (F)-domain code acquisition method using time (T)-domain integrator, which permits frequency offset ...
Tohru Kohd, Yutaka Jitsumats, Kazuyuki Aihara   +2 more
openaire   +1 more source

Radio-Frequency Spectrum Analyzers

Proceedings of the IRE, 1946
The resolving power of radio-frequency spectrum analyzers of the continuously tuned type is defined as the width in frequency, at points 3 decibels down, of the trace of a continuous-wave signal. The optimum resolving power is 1.3√F/T, in which F is the frequency band scanned, and T the period of one scan. Traces of pulse-modulated, frequency-modulated,
openaire   +1 more source

Frequency Spectrum Analyzer

American Journal of Physics, 1973
R. C. Pickett, R. M. Fuller
openaire   +1 more source

Frequency spectrum

2023
openaire   +1 more source

Frequency Spectrum

2010
Joris C Verster, Thomas M. Tzschentke, Kieran O’Malley, Francis C Colpaert, Bart Ellenbroek, Bart Ellenbroek, R. Hamish McAllister-Williams, Joachim Liepert, Cecilia J. Hillard, Sheldon Preskorn, Megan M Dahmen, Janka Lincoln, Oliver Stiedl, Sven Ove Ögren, E C Warburton, Bernard Le Foll, Mohammed Shoaib, Victoria L Harvey, Tony Dickenson, Ennio Esposito, Roberto William Invernizzi, Ennio Esposito, Robert William Invernizzi, Edoardo Spina, Cyril Höschl, Kim Wolff, Andreas Marneros, Anthony L. Riley, Steve Kohut, Samuel R. Chamberlain, Barbara J. Sahakian, David C.S. Roberts, Joseph Zohar, Seiya Miyamoto, Malcolm Lader, Emma Childs, Lawrence H. Price, Harriet de Wit, Wolfgang Fleischhacker, Lance Richard McMahon, Bernard Le Foll, Bernard Le Foll, Lawrence H. Price, Kieran O’Malley, Kieran O’Malley, Stephen M. Stahl, Meghan M Grady, Stephen C Fowler, Francis C. Colpaert, Alex Hofer, Etienne Sibille, Nicole Edgar, Linda P. Spear, Sam Hutton, Linda Lundstroem, Silvia Gatti McArthur, Will Spooren, Maria Isabel Colado, Richard Green, Marcy J. Bubar, Kathryn A Cunningham, Stephan G. Anagnostaras, Jennifer R Sage, Stephanie A. Carmack, Peter H. Boeijinga, Peter H. Boeijinga, Paul Newhouse, Heather Wilkins, Gary Remington, John Atack, Hilde Lavreysen   +70 more
openaire   +1 more source

Joint Communication and SAR Waveform Design Method via Time-Frequency Spectrum Shaping

IEEE Transactions on Geoscience and Remote Sensing, 2022
Youshan Tan, Zhongyu Li, Jing Yang
exaly  

Optical frequency combs: Coherently uniting the electromagnetic spectrum

Science, 2020
Scott Diddams, Kerry J Vahala, Thomas Udem   +2 more
exaly