winglj
Full Member level 4
Hi, everyone.
I am now doing some antenna measurement with HP 8510 network analyzer. I also connect the RF signal generator to a extender to do the anechonic chamber measurement.
Every thing is OK while doing bench test for S parameter, but for chamber measurement, the network analyzer always shows that the IF signal overload, even I try to reduce the signal generator output to its minimum (-20dBm).
By observing the receving signal, it seems at lower frequency which the receving signal over -10dBm (I am not sure, but the network analyzer shows channel 'a' is -10dB), the IF will overload.
My question is whether I need to add a 10dB attenuator to the extender to overcome this problem?
Thanks in advance.
I am now doing some antenna measurement with HP 8510 network analyzer. I also connect the RF signal generator to a extender to do the anechonic chamber measurement.
Every thing is OK while doing bench test for S parameter, but for chamber measurement, the network analyzer always shows that the IF signal overload, even I try to reduce the signal generator output to its minimum (-20dBm).
By observing the receving signal, it seems at lower frequency which the receving signal over -10dBm (I am not sure, but the network analyzer shows channel 'a' is -10dB), the IF will overload.
My question is whether I need to add a 10dB attenuator to the extender to overcome this problem?
Thanks in advance.