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Thanks, this is helpful.
But one of my concern is though I can have a matching between receiver and after the Txline, I can't get match between antenna & Txline input, will the reflection is big between antenna & Txline input under this case? Then it cause the antenna's efficiency drop though...
Thanks biff44, that's the real case I encountered. The antenna impedance will spin around on the smith chart widely comparing with no Txline, that really makes wide band matching difficult.
And my another concern is whether this Txline will impact the antenna efficiency's transmission to...
I've one non-50ohm antenna, and the matching circuit and receiver, but there's some distance between the antenna and matching circuit, Txline is needed between them for connection, but in this case, which kind of Txline should be used, low characteristic impedance Txline, 50ohm Txline, or high...
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