Topbanders! The repository of all (ok most) knowledge about RF... Some time ago, I gave a seminar to the local radio club about SWR. To provide an illustration, I used a visual explanation including
about SWR. To provide an illustration, I used a visual explanation including a garden hose--actually a series of various diameter garden hoses tied end-to-end. I explained that any transition from o
It is the ratio of electric intensity to magnetic intensity, in the "far" or "radiation" field. No, there isn't. No. 73, Sinisa YT1NT, VE3EA _______________________________________________ Topband ma
Good question, Ford. The impedance of free space describes the ratio of the electric field to the magnetic field for a propagating plane wave. IOW, if the electric field in a plane wave is 377 volts/
________________ First, it's not measured. The impedance of free space (377 ohms) is a mathematical construct, obtained by solving Maxwell's equations for an ideal isotropic radiator (point source),
Is there any intrinsic loss attributable to coupling a relatively low impedance system to the high impedance of free space? E.g. is there any benefit to using a higher impedance system? == Hi, Ford.
Upon further reflection (no pun intended), I think my speculation is off base. The field radiated from an antenna is a function only of the current through it, so it probably has no relationship to t
...snip... Ken, and others... When I gave that seminar on SWR to the local club, my biggest concern was trying to provide a visual image of what is happening with a transmission line, reflections on
biggest concern was trying to provide a visual image of what is happening with a transmission line, reflections on the line, and the resultant loss of signals due to the line losses. The biggest tro