Results 241 to 250 of about 5,106,399 (296)

Phase transitions and modulated phases in lipid bilayers

Physical Review E, 1995
We develop and analyze a continuum Landau theory for ordered chiral and achiral bilayer membranes. This theory contains couplings between tangent-plane orientational order and curvature that lead to ``rippled'' or ${\mathrm{P}}_{\mathrm{\ensuremath{\beta}}\ensuremath{'}}$ phases with one-dimensional height modulations and to phases with two-dimensional
, Chen, , Lubensky, , MacKintosh
openaire   +2 more sources

Phase smoothing functions for continuous phase modulation

IEEE Transactions on Communications, 1994
In this paper, the problem of signal design for continuous phase modulation is examined. Using the performance measures of effective bandwidth and minimum distance, "optimal" signal shapes are calculated for various receiver observation intervals for full and partial response signalling.
David K. Asano, Harry Leib, Subbarayan Pasupathy   +2 more
openaire   +2 more sources

Nonlinear continuous phase modulation

IEEE Transactions on Communications, 1994
A class of nonlinear CPM signals is introduced by extending nonlinear CPFSK signals to other forms of frequency pulses. The distance results and spectral properties of nonlinear CPM signals are reported. Bit error probabilities of nonlinear CPM signals are simulated in presence of adjacent channel interference. >
John P. Fonseka, Rongqiang Mao
openaire   +2 more sources

Modulation instability induced by cross-phase modulation

Physical Review Letters, 1987
Modulation instability that leads to breakup of intense cw radiation into a train of ultrashort pulses during propagation in optical fibers occurs only in the presence of anomalous group-velocity dispersion. It is shown that a new kind of modulation instability can occur even in the normal-dispersion regime when two copropagating optical fields ...
openaire   +2 more sources

A phase modulator with variable maximum phase deviation

IEEE Transactions on Communications, 1993
A phase modulator, constructed with three Armstrong modulators, is presented. In this modulator, the maximum phase deviation can be extended up to pi without frequency multiplication. Numerical results of the signal distortion are given for several values of the maximum phase deviation and compared to other Armstrong type phase modulators. >
openaire   +3 more sources

PHASE MODULATOR AND PHASE MODULATOR ARRAY INCLUDING THE SAME

2022
PARK JUNGHYUN, WANG YIFEI, BRONGERSMA MARK L   +2 more
openaire   +3 more sources

Dynamic Transmissive Metasurface for Broadband Phase-Only Modulation Based on Phase-Change Materials

Laser and Photonics Reviews, 2023
Tianhua Feng, Mingjie Zhang
exaly  

Continuous phase modulation

IEEE Communications Magazine, 1986
openaire   +1 more source

Self-phase modulation in chirped-pulse amplification

Optics Letters, 1994
Todd Ditmire, M D Perry, B C Stuart
exaly  

Relationship between space-vector modulation and three-phase carrier-based PWM: a comprehensive analysis [three-phase inverters]

IEEE Transactions on Industrial Electronics, 2002
Keliang Zhou, Danwei Wang
exaly