slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
No metal boundaries ==> hybrid modes beam waveguide PowerPoint Presentation
Download Presentation
No metal boundaries ==> hybrid modes beam waveguide

Loading in 2 Seconds...

play fullscreen
1 / 25

No metal boundaries ==> hybrid modes beam waveguide - PowerPoint PPT Presentation


  • 126 Views
  • Uploaded on

No metal boundaries ==> hybrid modes beam waveguide. y. Waveguides. x. z. modes. E z = 0 and H z = 0 ==> TEM mode - plane wave - ideal coax or strip line E z = 0 and H z  0 ==> TE mode E z  0 and H z = 0 ==> TM mode E z  0 and H z  0 ==> hybrid mode.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'No metal boundaries ==> hybrid modes beam waveguide' - terence-shirley


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

y

Waveguides

x

z

modes
modes
  • Ez = 0 and Hz = 0 ==> TEM mode - plane wave - ideal coax or strip line
  • Ez = 0 and Hz 0 ==> TE mode
  • Ez 0 and Hz = 0 ==> TM mode
  • Ez 0 and Hz 0 ==> hybrid mode
slide5

Can we find a radial field distribution that will repeat itself? How about the phase?

z – zo

z

z + zo

slide6

r

j

Cylindrical Waves

slide7

Assume no j dependence

Jm is mth-order Bessel function

slide8

Due to no boundaries, g is not discrete. Continuous spectrum of g values.

Propagation mainly along z axis.

slide9

z – zo

z

z + zo

Periodic means field distribution at z = -zo is the same as at z = + zo.

slide10

z – zo

z

z + zo

Identify this as the Hankel transform of.

slide11

z – zo

z

z + zo

inverse Hankel transform leads to

Loss can be calculated by integrating from R to 

slide12

z – zo

z

z + zo

Periodic means field distribution at z = -zo is the same as at z = + zo.

slide13

z – zo

z

z + zo

Integral over g can be done.

slide14

z – zo

z

z + zo

slide15

Phase shift - lens or mirror

z – zo

z

z + zo

Normal wave propagation

slide16

z – zo

z

z + zo

Is there a function that is a Hankel transform of itself?

Is there a function that is a Fourier transform of itself?

slide18

Is there a function that is a Hankel transform of itself?

a Gaussian x Laguerre polynomial

Is there a function that is a Fourier transform of itself?

a Gaussian x Hermite polynomial

Weber function

surface wave guided by a dielectric above a conductor tm mode1

Dielectric -- thickness d

Metal conductor

z

Surface wave guided by a dielectric above a conductorTM mode
  • Obtain Ez in the dielectric and in the vacuum
  • Assume Ez goes to 0 as y