Can I use a bias tee in the back of a VNA (E5080B) as a port 1 and 2, or do I need a mixer for it? I want to measure the network parameters of a device that requires bias.
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\$\begingroup\$ A bias tee for what purpose? To measure the network parameters of a device that requires bias? Please edit your question with the relevant details. \$\endgroup\$– nanofaradCommented Jan 31, 2023 at 23:40
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\$\begingroup\$ @nanofarad yes I want to measure the network parameters of a device that requires bias. \$\endgroup\$– FerrofluidCommented Jan 31, 2023 at 23:47
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\$\begingroup\$ Then yes, you need a bias tee (and may want to correct for its own network parameters as part of calibration or data analysis). A mixer doesn't sound like the right device to use here. \$\endgroup\$– nanofaradCommented Feb 1, 2023 at 0:50
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You connect the bias T between one port of the VNA and the device.
If you calibrate at the VNA ports, then you're measuring the 'bias T + device', which may or may not be what you want.
If you calibrate at the bias T and the other port, then you're measuring the device alone.
