maniana
Member level 4
what is antenna mismatch
Could someone explain how this circuit works?
Below is a short description from an ICOM service manual regarding this circuit but I don't understand a few things:
1. why the voltage before the inductor corresponds to the forward power and the voltage after the inductor corresponds to the reflected power?
2 why the combined voltage is minimum when antenna is matched?
if I short the antenna the voltage should be lower, shouldn't it?
whot is there is no antenna?
"The APC detector circuit (D14, D17, L39) detects forward
signals and reflection signals at D14 and D17 respectively.
The combined voltage is at minimum level when the antenna
impedance is matched at 50 Ω and is increased when it
is mismatched."
Could someone explain how this circuit works?
Below is a short description from an ICOM service manual regarding this circuit but I don't understand a few things:
1. why the voltage before the inductor corresponds to the forward power and the voltage after the inductor corresponds to the reflected power?
2 why the combined voltage is minimum when antenna is matched?
if I short the antenna the voltage should be lower, shouldn't it?
whot is there is no antenna?
"The APC detector circuit (D14, D17, L39) detects forward
signals and reflection signals at D14 and D17 respectively.
The combined voltage is at minimum level when the antenna
impedance is matched at 50 Ω and is increased when it
is mismatched."