passive matching problem?
时间：04-09
整理：3721RD
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Hi,
Is it possible to match a circuit at high frequency by using simple LC, meanwhile it has positive inductive impedance in low frequency rather than capacitive impedance?
thanks a lot!
Added after 1 hours 14 minutes:
exactly speaking, I match 4 Ohm to 50 Ohm at 1.88 GHz, and I want the matching network has at least 40*j at 890 MHz, so that it is possible to be used as a DC-feeder at 890 MHz.
Is it possible to match a circuit at high frequency by using simple LC, meanwhile it has positive inductive impedance in low frequency rather than capacitive impedance?
thanks a lot!
Added after 1 hours 14 minutes:
exactly speaking, I match 4 Ohm to 50 Ohm at 1.88 GHz, and I want the matching network has at least 40*j at 890 MHz, so that it is possible to be used as a DC-feeder at 890 MHz.
use a low pass configuration, series L and shunt C.
no, I mean, positive reactance in 880 MHz.
conventional LC has always NEGATIVE reactance in low frequency!