ps3_2011

# ps3_2011 - characteristics are also shown. ..Va is the...

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1 ECE 2C problem set (2-port parameters, small signal parameters, loadlines) Problem 1: (a) Compute the 2-port Y parameters of the circuit (b) Compute the Z parameters. Problem 2: (a) Compute the 2-port Y parameters of the circuit (b) Compute the Z parameters. Problem 3: At a signal frequency of 1 GHz, find the Y parameters port 1 port 2 1 nH 100 pF 200 pF Problem 3: This is a simple FET model (a) As function of frequency, find algebraic expressions for the Y parameters. (b) Now setting Cgd=0 fF, compute the Hybrid parameters as a function of frequency. port 2 g m V 1 C gs C gd g ds Problem 4: meaning of small signal parameters. A triode vacuum tube is shown to the rigth. Typical IV

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Unformatted text preview: characteristics are also shown. ..Va is the anode voltage and Vg is the Grid voltage. A tube's grid current is nearly zero as long as the grid is more negative than the cathode, and the anode current is given by 2 / 3 ) / ( a g p a V V k I where is known as the amplification factor and p k is a characteristic of the tube having units of amps per volt^3/2. (a) Defining the output conductance as a a V I / and the transconductance as 2 g a V I / , derive expressions for these. (b) Working with the characteristics above, compute numerical values of the transconductance and output conductance at Va=200 V and Vg= -0.5 Volts...
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## This note was uploaded on 12/28/2011 for the course ECE 2C taught by Professor Yue during the Fall '08 term at UCSB.

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ps3_2011 - characteristics are also shown. ..Va is the...

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