vpmedina
Junior Member level 2
vector network analyzer antenna design
HELP!
I am doing antenna design w/o vna. I just simulate my designs and fab them then hope for the best.
And I haven't seen even a glimmer of hope. I could send/receive data but it is not correct. We use a devkit and when the code is tested there, it sends/receives perfectly.
In our testing, my board design is the TX and the devkit is the RX. The devkit is interfaced via USB to the computer and we could see the PANID, payload etc...
Everything is messed up. It changes PANid every time it sends, the payload is messed up. It is just wrong.
My guess is:
1. mismatch of antenna frequency
2. low gain/directivity of my antenna
3. SNR
4. impedance mismatch
All could be found out IF i only have a VNA on hand.
Any suggestions?
BTW my antenna is a dipole.
HELP!
I am doing antenna design w/o vna. I just simulate my designs and fab them then hope for the best.
And I haven't seen even a glimmer of hope. I could send/receive data but it is not correct. We use a devkit and when the code is tested there, it sends/receives perfectly.
In our testing, my board design is the TX and the devkit is the RX. The devkit is interfaced via USB to the computer and we could see the PANID, payload etc...
Everything is messed up. It changes PANid every time it sends, the payload is messed up. It is just wrong.
My guess is:
1. mismatch of antenna frequency
2. low gain/directivity of my antenna
3. SNR
4. impedance mismatch
All could be found out IF i only have a VNA on hand.
Any suggestions?
BTW my antenna is a dipole.