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oresat / oresat-c3-hardware

C3 (Command, Communication, and Control) our Command and Data Handling (C&DH) card.
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UHF receive sensitive is 15 db down from expected #50

Closed andrewgreenberg closed 1 year ago

andrewgreenberg commented 1 year ago

... why?

andrewgreenberg commented 1 year ago

We found out that the previous UHF LNA based on the BFPXXXF did not like going into a high impedance. It wouldn't actually put out 21 dB without some kind of 50 ohm load on the output. This was.. unexpected. Since we already switched to the TQP3M9036 for the L band, we decided to switch the UHF LNA to the same IC. It burns power, but it should be stable and give us the gain we expect.