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180 hybrid
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The 180o hybrid functions as a splitter/combiner for both 0o and 180o signals. You may download an
analysis program that performs all the calculations described in this article. The 180o hybrid is
usually represented as in figure 1 with the angles labeled along the sides. A signal into port 1 appears
in-phase, 3 dB attenuated, at port 2 and port 4. No signal appears at port 3 therefore port 3 is said to
be isolated relative to port 1
180 hybrid.pdf (29 K)
analysis program that performs all the calculations described in this article. The 180o hybrid is
usually represented as in figure 1 with the angles labeled along the sides. A signal into port 1 appears
in-phase, 3 dB attenuated, at port 2 and port 4. No signal appears at port 3 therefore port 3 is said to
be isolated relative to port 1
180 hybrid.pdf (29 K)
Attenuators are devices used to adjust signal levels, to control impedance mismatch and to isolate circuit stages.
Attenuator.pdf (195 K)
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不会是pi衰吧
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