Abstract: In this paper, a 3 rd order active-RC Low-Pass Filter (LPF) is proposed for a zero-IF receiver. The LPF enables 85/215/430 KHz passband selection and 3 dB per step gain adjustment from 0 to ...

This is a small personal project where I modelled a simple RC low-pass filter in LTSpice to find its cutoff (-3 dB) frequency. The aim was to verify the expected behaviour of the filter and compare ...

Driving an analog-to-digital converter (ADC) for optimum mixed-signal performance is a design challenge. Figure 1 shows a standard ADC driver circuit. During ADC acquisition time, the sampling ...

假設 $x(t) = e^{j \Omega t}$ ： $$ y_p(t) = H(\Omega) e^{j \Omega t} \tag{1-8} $$ 先求 $H(\Omega)$ ： 將 $x(t) = e^{j \Omega t}$ 和 $y_p(t) = H(\Omega) e^{j ...

Butterworth filter is a type of filter whose frequency response is flat over the passband region. Low-pass filter (LPF) provides a constant output from DC up to a cutoff frequency f(H) and rejects all ...