Matching network for end-fed half wave, Q calculations etc.?
Or, use an "L" network. Same number of components, and it will even
match
impedances that call for negative component values in a parallel
tuned
circuit.
W4ZCB
======================================
Actually, with an exact 1/2-wave antenna, an L-network suffers from
the same disability as does the simple L and C tuned circuit.
This is why automatic antenna tuner manufacturers, which use
L-networks, state in their operating handbooks that exactly 1/2-wave
antennas should be avoided.
But it is not an important matter. Very few antennas are EXACTLY
1/2-wavelength in length. And it is a simple matter to shift the
resonant frequency up or down a few KHz.
----
Reg, G4FGQ.
|