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# B draw the signal ow graph for the circuit shown c

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Unformatted text preview: onstant β . (b) Draw the signal ﬂow graph for the circuit shown. (c) Derive [S ]T otal using signal ﬂow graph approach. (d) Derive [T ] for a given [S ] using the following T-parameter deﬁnition. a1 b1 = T11 T21 T12 T22 b2 a2 (3) (e) Calculate [S ]T otal using [T ] for the same circuit with the following numbers: βl = π/4 0.09104 − j 0.01507 0.90825 − j 0.03634 SA = 0.90825 − j 0.03634 0.09004 − j 0.00646 (4) SB = (6) 0.09004 − j 0.00646 0.90825 − j 0.03634 0.90825 − j 0.03634 0.09104 − j 0.01507 (5) Compare the result with (c). 4. (a) We have shown the expression for transducer power gain GT in class. Is GT a function of source impedance? Is GT a function of load impedance? (b) Power gain (GP ) is deﬁned as the ratio between power delivered to the load and the input power delivered into the newtork (PL /Pin ). Find the expression for GP using signal ﬂow graph approach. Is GP a function of source impedance? Is GP a function of load impedance? (c) Available power gain (Ga ) is deﬁned as the ratio between power available from network and the power avai...
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