New answers tagged impedance-matching
3
votes
What is the output impedance of a typical solid state ham transmitter?
For efficiency the transceiver output impedance is much different from its rated load impedance. For modern 100W TRX expect an output impedance of a very few Ohms.
An example: A tranceiver has a ...
6
votes
Accepted
What is the apparent AC voltage source caused by a mismatched impedance on the antenna or transmission line?
This would usually take a course in Transmission Line Theory, but we can give you the mechanical solution really quickly.
Behold: THE SMITH CHART (in impedance form):
Wow. A mandala! A fractal! What ...
- 15.5k
5
votes
Accepted
Understanding how antenna mismatch can damage a transmitter
There are a few parts to this, it's good to keep them separate.
1. Antenna impedance
Antennas are complicated beasts, they connect the circuit world of voltage, current and power, into the ...
- 10.5k
2
votes
Understanding how antenna mismatch can damage a transmitter
– let's say we modify the antenna so its radiation resistance is only 15 ohms. Current increases to 330 mA, total power to 10 W, but only 1.7 W is radiated, with remaining 8.3 W lost as heat. I ...
- 24.3k
Top 50 recent answers are included