[전자회로응용] Two stage CS amplifier circuit 결과레포트 (만점)

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1. Two stage CS amplifier circuit

이 실험에서는 Two stage CS amplifier circuit을 구현하고 이론적으로 계산한 전압이득과 시뮬레이션 및 측정값을 비교하는 것이 목표입니다. 1단 CS 증폭기의 전압이득은 -gm*RL/(1+gm*RL)이고, 2단 CS 증폭기의 전압이득은 -gm*RL/(1+gm*RL)입니다. 따라서 전체 전압이득은 1단과 2단의 전압이득을 곱한 값이 됩니다. Multisim과 MyDAQ을 사용하여 회로를 구성하고 Oscilloscope로 입출력 파형을 확인하여 이론값과 비교할 것입니다.

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1. Two stage CS amplifier circuit

A two-stage common-source (CS) amplifier circuit is a widely used topology in analog electronics, particularly in amplifier design. This circuit consists of two cascaded CS amplifier stages, providing higher gain and improved performance compared to a single-stage CS amplifier. The first stage typically uses a MOSFET or a bipolar junction transistor (BJT) as the active device, which acts as the input stage. This stage provides the initial amplification of the input signal. The second stage, also using a MOSFET or BJT, further amplifies the signal from the first stage, resulting in a higher overall gain. The advantages of a two-stage CS amplifier circuit include: 1. Increased gain: By cascading two CS amplifier stages, the overall gain of the circuit is significantly higher than a single-stage CS amplifier. This allows for greater amplification of the input signal. 2. Improved input impedance: The input impedance of the first stage is typically high, which helps to minimize the loading effect on the input signal source. 3. Reduced output impedance: The second stage provides a lower output impedance, making it easier to drive subsequent stages or loads. 4. Flexibility in design: The two-stage topology allows for more design flexibility, as the parameters of each stage can be optimized independently to achieve the desired performance. 5. Stability and noise reduction: The cascaded stages can help improve the overall stability and reduce the noise of the amplifier circuit. However, the two-stage CS amplifier circuit also has some potential drawbacks, such as increased complexity, higher power consumption, and the need for careful design to ensure stability and minimize distortion. Overall, the two-stage CS amplifier circuit is a valuable and widely used topology in analog electronics, providing enhanced performance and flexibility compared to single-stage designs.