Electromagnetic Field
Animations
Introduction
Antenna - Electromagnetic
Fields
Field Relationship
Example:
Calculate field inside
waveguide
Calculate full aperture
field
WR-90
WR-90 E&H
WR-90 open
WR-90 rim
Near Field ß Fourier à Far Field
E x H
Coffee can
Coffee rim
Interference from
multiple sources
Feed with two sources
Penny
Reduce sidelobes from
edge currents
VE4MA
VE4MA rim
Chaparral stock
Chaparral flush
W2IMU
W2IMU dual-mode feed
-
very small edge current
G3PHO
Bad IMU
Clavin
74
Diagonal Horns
No flare
1.4, 14
1.4, 30
1.4, 60
Diagonal rim
1.85, 30
1.85, 60
Flared horns
Conical
Conical rim
DSS
AT-68/U
Reverse feeds
Penny
Pro
DC3QS
30 mm
diffraction
60 mm
Rim
Phase error
Waveguide dipole
Clavin ‘54
Other feeds
Primestar vertical
Primestar horizontal
E-plane
H-plane
corrugations
Multiband feeds
W5ZN at 10
W5ZN at 24
W5ZN choke 10
W5ZN choke 24
2 and 5 experiment
3 and 10 experiment at
3456
3 and 10 experiment at 10
GHz
SUMMARY
Slide 68
Slide 69
W1GHZ favorite feeds