Dear all,
I'm new to this forum, and would like to ask a question about >1GHz circuit engineering. I have a circuit which is very simple - it consists of a surface mount directional coupler from minicircuits, with the output being filtered by another couple of surface mount packages. This circuit lives in a little copper box, and my problem comes going from semi rigid coax to the microstrip on the circuit board, via an SMA bulkhead connector. I am trying to minimise the S11 of my box, but am struggling to get it below -20dB. I'm a physicist, not an engineer, and so am a little stuck.
Are there any decent tricks I can use to improve this? Any help much appreciated.
Best regards,
Nick
I'm new to this forum, and would like to ask a question about >1GHz circuit engineering. I have a circuit which is very simple - it consists of a surface mount directional coupler from minicircuits, with the output being filtered by another couple of surface mount packages. This circuit lives in a little copper box, and my problem comes going from semi rigid coax to the microstrip on the circuit board, via an SMA bulkhead connector. I am trying to minimise the S11 of my box, but am struggling to get it below -20dB. I'm a physicist, not an engineer, and so am a little stuck.
Are there any decent tricks I can use to improve this? Any help much appreciated.
Best regards,
Nick