1. Design a small-signal midband (for audio signal 20Hz-20kHz) common-emitter (CE) amplifier with a BJT transistor having of 100 and VBE of 0.7V. The dc bias is provided by the voltage-divider configuration. The available dc voltage supply is +15V. The amplifier has the overall voltage gain (with load) of AVLoad 50 and maximum output voltage swing with no distortion or clipping. An ac output signal from a audio microphone, vs of 10 mVpp need to be amplified. A source resistance, RS of 1 k is used at the input side (in order to facilitate the measurement purpose of the input resistance) . The amplifier output is connected to a load, RL of 1.5k. You need to determine all the resistors values of the bias circuitry, coupling capacitors and emitter bypass capacitor values, -3dB cut-off frequencies at low and high frequencies, input resistance Zin, output resistance Zout, the maximum voltage swing (no clipping) and the stage voltage gain. Verify your design and output with any suitable computer simulation.

The report should have the following items: (i) Introduction theory, etc.

(ii) Design: Design amplifier circuit calculation both dc and ac analysis.

(iii) Results : - Expected result based on the design theory.

- Simulation verification results- e.g. input/output waveforms, Bode plot (-3dB cutoff freq). Analysis and comparison of the results -other necessary waveforms/diagrams. (iv) Discussion & Conclusion