Department of Electrical and
Computer Engineering
ECSE 352 Electromagnetic Waves and Optics
5 Rectangular waveguides
4.5 Rectangular waveguides
References: Section 14.5
@AGK
4.51
Overview
Rectangular
waveguides
are
widely
used
in
microwave
pplications
he
orm
f
e
nd
ields
ectangular
applications. The form of the E and H fields in rectangular
conducting waveguides is very similar to the parallel plate
waveguide, with some obvious modification. We will determine
the dominant mode for these typeofwaveguides, and learn why
they will not support a TEM mode. We will also consider the
factors that limit the maximum power that can be transmitted
in a waveguide.
ECSE 352 4.52
Learning outcomes
After taking this class you should be able to:
• Sketch the modes of a rectangular waveguide
• Calculate the dominant mode of a rectangular
aveguide
waveguide
• Calculate the maximum power level for a
rectangular waveguide
ECSE 352 4.53
Contents
• Rectangular waveguides
• Attenuation in rectangular waveguides
• Power limits of rectangular waveguides
ECSE 352 4.54
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentWaveguide Concept Map
Conductive boundary
ielectric boundary
Rectangular
ylindrical
geometry
boundary
Wave confinement
Dielectric boundary
Cylindrical
Guided wave types
sults in
causes
Propagation modes
Transverse
lectromagnetic
Transverse magnetic
results in
have
are
electromagnetic
TEM
Cutoff frequency
(TM)
Transverse electric
(TE)
cause
Have lower losses at
igh frequency than
Frequency dependent:
have
have
Attenuation and
dispersion
ECSE 352 4.55
high frequency than
transmission lines
Impedance, phase, group velocity
Rectangular waveguides
• Rectangular waveguides provide confinement in both x
and y.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '08
 Davis
 Transverse mode, Rectangular Waveguides, Waveguide Concept Map, κ m, β m

Click to edit the document details