windell
Mechanical
- Jun 16, 2005
- 26
Hi,
Here is my setup info
I'm gathering data on the radiation pattern of a dipole I recently built. My test setup uses two antennas in which a calibrated horn is transmitting to my dipole. Both transmit and receive antennas are connected to a network analyzer with the S-parameter test set. I set the transmit to 0dBm or 1mW. I am reading log plot s12 measurements at 434MHz.
I was reading that at best only half my transmit power will radiate from my antenna due to the 50ohm to 50ohm match. This makes sense to me, however, I am not sure for certain if the 1mW network anlyzer setting compensates for the 50% loss of power and transmits 2mW instead so 0dBm is what is radiating from the antenna.
So my question is...with 1mW set for the transmitting power, if my antenna was a perfect 50ohm impedance, would the radiated power from the antenna be 1/2mW or 1mW?
Also would this mean that the best reception of power at the receiver be 0.25mW if all of the radiated power was received?
Thanks!
Windell
Here is my setup info
I'm gathering data on the radiation pattern of a dipole I recently built. My test setup uses two antennas in which a calibrated horn is transmitting to my dipole. Both transmit and receive antennas are connected to a network analyzer with the S-parameter test set. I set the transmit to 0dBm or 1mW. I am reading log plot s12 measurements at 434MHz.
I was reading that at best only half my transmit power will radiate from my antenna due to the 50ohm to 50ohm match. This makes sense to me, however, I am not sure for certain if the 1mW network anlyzer setting compensates for the 50% loss of power and transmits 2mW instead so 0dBm is what is radiating from the antenna.
So my question is...with 1mW set for the transmitting power, if my antenna was a perfect 50ohm impedance, would the radiated power from the antenna be 1/2mW or 1mW?
Also would this mean that the best reception of power at the receiver be 0.25mW if all of the radiated power was received?
Thanks!
Windell