Current Gain (dB) 50 50 Current Gain 45 40 35 Unilateral Power Gain 45 40 35 30 25 F-126 GHz 20 15 10 -224 GHz 50 10 15 50 9.0 9.5 10.0 10.5 11.0 11.5 log(Frequency) 10 ° Unilateral Power Gain (dB)

60 fi fs f2 Qs = f = 12,000 Hz the cutoff frequency f2 =.............Hz ▬▬ Q Search book.pat digital-fundamental...

Explain the following tradeoffs: Error performance vs bandwidth

Problem #1. The parameters for the circuit below are V₁=00, and VBE (on)= 0.7 V. www-H R$ Rc RL STEF RE V+=5 V V = -5 V Low-Frequency Analysis: Clearly draw the small signal low-frequency model (with the Hybrid-) and derive an equation for the break frequency (Hint: Find the Thevenin resistance seen by the capacitor).

Q6)For the power delay profiles given in Figure below: A) Compute Mean Excess Delay. B) Compute the RMS delay spread (s). C) Compute the 50% correlation coherence bandwidth. P(t) OdB -10dB -20dB -30DB Tíns) 50 75 100 excass

A step-up chopper has input voltage of 220v and o/pvoltage of 660v. If the non-conducting time of the thyristorchopper is 100μs compute the pulse width of the outputvoltage . If the pulse width is halved for constant frequencyoperation Find the new output voltage and chopper frequency

Q.) Figure below divider bras amplifier Circuit. Givent the model Parameter : gm = 5o mS emitter (CE) Voltage BJT hibrid- TT Shows a Common riT: 6 Kr and to %3D : 00 +Vc. RI C2 Tooks touf RL Vo ihe 200 RE TCE Vs 20 a Draw the Ac eQuivalent at low Freauency Circuit Zi and b.) Determine inPut impedance at mid FreaUincy OutPut imPedance Z0 c.) Calculafe two low Cut -oFF FreQuen Cies FLC1 and FLC2 Ci and E2 respectively Such as due to the exterda al capacitors

Solve in digital format 1.- Describe in your words the definition of bandwidth.2.- Describe the definition of bandwidth of a system.3.- Describe the definition of bandwidth of a signal4.-What is the function of a filter?

kkll

31. In a certain two-stage amplifier, the lower critical frequencies are fa1) = 125 Hz and feU2) = 125 Hz, and the upper critical frequencies are feu1) = 3 MHz and feu2) = 2.5 MHz. Determine %3D the bandwidth.