tony_lth
Advanced Member level 5
How can I keep two channels gain difference constant?
I have two same configuration receiver channels, the input power is 3dB power splitting and then input to the two channels respectively.
The gain difference is constant when input power is between -30dBm and -80dBm. And when input power is between -81dBm and -113dBm, the gain difference of the two channels is deviated from the constant.
How to keep the gain difference constant when input power at -90dBm ~ -110dBm level?
I know there are many Electrol-magnetic interferences at environment. So what should I do? Replace the normal RF cable with more shielded cable? Any others factors?
I have two same configuration receiver channels, the input power is 3dB power splitting and then input to the two channels respectively.
The gain difference is constant when input power is between -30dBm and -80dBm. And when input power is between -81dBm and -113dBm, the gain difference of the two channels is deviated from the constant.
How to keep the gain difference constant when input power at -90dBm ~ -110dBm level?
I know there are many Electrol-magnetic interferences at environment. So what should I do? Replace the normal RF cable with more shielded cable? Any others factors?
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