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Directivity Maximization of Difference Patterns for Monopulse Microstrip Patch Arrays with Sidelobe Constraints. [PDF]

Micromachines (Basel)
Li W, Jiao YC, Zhang Y, Zhang L.
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Some cosmological models with heat and null radiation flow

Astrophysics and Space Science, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J K Singh
exaly   +2 more sources

Magnetized Emergent Universe with Null Radiation Flow

International Journal of Theoretical Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J K Singh
exaly   +3 more sources

Bianchi Type-I Cosmological Model with Null Radiation Flow

International Journal of Theoretical Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J K Singh
exaly   +2 more sources

Generation of Radiation Null for the HMSIW Leaky-Wave Antenna

IEEE Antennas and Wireless Propagation Letters, 2017
A new design of half-mode substrate integrated waveguide leaky-wave antenna with radiation null in the radiation pattern is proposed in this letter. The radiation null is realized by controlling the leakage constant of the effective radiation sections (ERSs).
Junhong Wang
exaly   +2 more sources

The realizing of radiation null for a SSPPs leaky-wave antenna

2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE), 2017
A new design of spoof surface plasmon polaritons (SSPPs) leaky-wave antenna (LWA) with radiation null in the radiation pattern is proposed in this paper. The antenna is fed with coplanar waveguide, and consists of a main radiation section and an auxiliary radiation section. By controlling the initial phase, the phase constant and the radiation strength
Junhong Wang
exaly   +2 more sources

IV.—On Properties of Null Geodesics, and their Application to the Theory of Radiation

Proceedings of the Royal Society of Edinburgh, 1934
In a previous paper an expression was given by one of us for the Doppler effect in a de Sitter universe. In the present communication an attempt is made to obtain a more general expression for the Doppler effect, and for this purpose certain results have been derived relating to the properties of null geodesics in a general Riemannian space.
Kermack, W. O., M'Crea, W. H., Whittaker, E. T.   +2 more
openaire   +2 more sources

Harmonic and Null Descriptions of Gravitational Radiation

Physical Review, 1968
Abstract : The problem of an axially symmetric space-time containing gravitational waves in the usual Bondi null coordinate system is considered. This Bondi frame is then related to asymptotically harmonic coordinates by means of a characteristic initial value problem.
Richard A. Isaacson, Jeffrey Winicour
openaire   +1 more source