Electromagnetic Wave Propagation

Oct 12, 2012

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Early Radio to Radio Astronomy A Brief History of Radio

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Electromagnetic Wave Propagation

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Radio Wave Propagation

Radio Wave Propagation. VLF ( 3 – 30 KHz) and LF (30 – 300 KHz) Propagation. Introduction. The dominant factor in VLF and LF propagation is the extremely large wavelength of the waves. l ~ 1 – 10 km (VLF) l ~ 0.1 – 1 km (LF)

1.73k views • 53 slides

Rossby wave propagation

Rossby wave propagation. Propagation…. Three basic concepts: Propagation in the vertical Propagation in the y-z plane Propagation in the x-y plane. 1. Vertical propagation Reference back to Charney & Drazin (1961) Recall the QG equations from MET 205A QGVE QGTE. Vertical propagation

866 views • 26 slides

Seismology: Wave Propagation

Seismology: Wave Propagation. Art McGarr Based on lectures by James Mori and Dave Boore . Contents. ・ Rays Snell ’ s Law Structure of the Earth ・ Seismic Waves Near-Field Terms (Static Displacements) Far-Field Terms (P, S, Surface waves) ・ Normal modes

855 views • 37 slides

Radio Wave Propagation

Radio Wave Propagation. Carl Luetzelschwab K9LA k9la@arrl.net. A Little About K9LA. Novice WN9AVT in October 1961 WA9AVT in May 1962, selected K9LA in 1977 Enjoy propagation, DXing , contesting, and antennas WorldRadio Propagation columnist since Jan 1997

2.27k views • 125 slides

RADIO WAVE PROPAGATION

RADIO WAVE PROPAGATION. Presented by : Rajni Asstt . Professor(ECE) SBSSTC,Ferozepur. x. Electric Field, E. Magnetic Field, H. y. Direction of Propagation. z. RADIO WAVES. Electromagnetic Wave(Radio Waves) travel with a vel . of light.

8.1k views • 57 slides

Electromagnetic Wave Propagation

Electromagnetic Wave Propagation. 1. Figure 10.1 Plot of E ( z , t ) = A sin( w t - b z) (a) with constant t , (b) with constant z.

1.1k views • 25 slides

Radio Wave Propagation

Radio Wave Propagation. Ionosphere Layers. Radio Waves are Bent by the Ionosphere. F1 and F2 Ionosphere Layers Combine at Night. Critical Angle. Ground Wave, Sky Wave and Skip Zone. Great Circle Route. MUF is the highest frequency that allows a radio wave to reach the desired destination.

1.02k views • 21 slides

Plane wave propagation

Plane waves (argument=const. on parallel planes). For the other component:. Plane wave propagation. Medium: Homogeneous, Isotropic, Time invariant, Lossless, No charges. 3D wave equation 1D wave equation (each component). Time harmonic case >>>.

1.49k views • 3 slides

Seismic Wave Propagation

Seismic Wave Propagation. Elastic Materials. L. F. strain. D L. F = k * D L/L (Hooke’s Law) k = Young’s modulus. strain. Rand quartzite. Acoustic Waves. F = Mass*Acceleration (Newton rules!). F(x). F (x+dx). A. u+ du. x. u. x + dx.

936 views • 37 slides

Wave Propagation

Wave Propagation. Presented by: Bob Kenyon - K8LJ. CRES Amateur Radio Club 4/22/2008. Agenda. Introduction and background Basic propagation concepts Propagation software overview Modeling program examples Demo of W6ELProp and Ionoscope Open discussion & conclusion. ~ 30 mi.

1.52k views • 36 slides

Radio Wave Propagation

Radio Wave Propagation. Radio Wave Components. Absorption. = the conversion of the transmitted EM energy into another form, usually thermal. The conversion takes place as a result of interaction between the incident energy and the material medium, at the molecular or atomic level.

994 views • 43 slides

Wave Propagation

13. Wave Propagation. Electrical to Electromagnetic Conversion. Electrical energy fed into transmitting antenna must be converted to another form of energy for transmission. Transmitting antenna converts its input electrical energy into electromagnetic energy.

520 views • 28 slides

Rossby wave propagation

Rossby wave propagation. Propagation…. Three basic concepts: Propagation in the vertical Propagation in the y-z plane Propagation in the x-y plan. 3. Propagation in the x-y plane Reference back to Hoskins & Karoly (HK, 1981)

434 views • 18 slides

Seismology: Wave Propagation

Seismology: Wave Propagation. Art McGarr Based on lectures by James Mori and Dave Boore. Contents. ・ Rays Snell ’ s Law Structure of the Earth ・ Seismic Waves Near-Field Terms (Static Displacements) Far-Field Terms (P, S, Surface waves) ・ Normal modes

575 views • 37 slides

Rossby wave propagation

Rossby wave propagation. Propagation in the x-y plane Hoskins & Karoly Section 5. The linearized equations reduce to (5.9) where  ′ is the usual perturbation streamfunction. In this case, And which is basically (from 205A). Propagation in the x-y plane

346 views • 14 slides

Electromagnetic Wave Propagation

Electromagnetic Wave Propagation. High School Science Demonstration Melanie Leong June 25, 2003. Early Radio to Radio Astronomy A Brief History of Radio & A Quick Introduction to Radio Astronomy. Onizuka Visitor Center Presentation Melanie Leong July 5, 2003. Agenda.

502 views • 28 slides

Electromagnetic Wave

Electromagnetic Wave. Petty Fig 2.1. E. B. Electrical field changing  Magnetic field changing. Petty Fig 3.2 Two Assertions. Visible band is very transparent in clear sky atmosphere (very little gaseous attenuation) Visible band includes point of maximum emission from the sun

137 views • 5 slides

Wave Propagation

538 views • 36 slides

Seismology: Wave Propagation

Seismology: Wave Propagation. Art McGarr Based on lectures by James Mori and Dave Boore. Contents. ・ Rays Snell ’ s Law Structure of the Earth ・ Seismic Waves Near-Field Terms (Static Displacements) Far-Field Terms (P, S, Surface waves) ・ Normal modes

450 views • 37 slides

Electromagnetic Wave

Electromagnetic Wave. Wireless Communication. Cellular Phone Radio Television. http://en.wikipedia.org/wiki/Modulation. Analog Modulation. Amplitude modulation Double-sideband modulation DSB + Double-sideband modulation with unsuppressed carrier (DSB- WC)(used on the radio AM band)

184 views • 10 slides

Wave Propagation

Wave Propagation. Objectives. Apply the relationship between Frequency, Wavelength and the Speed of Propagation Distinguish between Reflection, Refraction, and Diffraction Solve refraction angles using Snell’s Law

467 views • 32 slides

Seismic Wave Propagation

Seismic Wave Propagation. What are Seismic Waves. Seismic waves are the vibrations from earthquakes that travel through the Earth They are the waves of energy suddenly created by rock fracture within the earth or an explosion.

298 views • 22 slides

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