Home |
Search |
Today's Posts |
#9
![]() |
|||
|
|||
![]()
I am still dreaming about an ideal antenna having not more than 10% of
wavelength and 100% efficiency. Thanks for all the posts, anyhow. Bozidar, 9a2 Moderate/high efficiency with a 10% physical height is pretty easy to attain. That's not an e/h antenna, as far as I am aware. The e/h antenna appears to ignore the main point about Maxwell's equations: changing fields generate changing fields. E' make B's and so on. You can't separate a changing E field from its B field, and so on. Thus the premise is wrong. In a --very-- small volume (fraction of a radiansphere), any single current max radiator is very inefficient. Similarly, any multiple current max radiator does not exhibit constructive interference in the far field. That's the physics. Antennas as a pure science are now an exhausted field. 73, Chip N1IR |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
Mobile Ant L match ? | Antenna | |||
Poor quality low + High TV channels? How much dB in Preamp? | Antenna | |||
QST Article: An Easy to Build, Dual-Band Collinear Antenna | Antenna |