How to build up an ideal discrete-time DT 4 th -order delta sigma modulator DSM with 4bit quantizer in Matlab SIMULINK with using CIFFCIFBCIFF-FB architecture respectively Note that the maximum NTF g

Building an ideal discrete-time (DT) 4th-order delta sigma modulator (DSM) with a 4-bit quantizer in Matlab SIMULINK with using CIFF/CIFB/CIFF-FB architecture can be done by following these steps:

Step 1: Setting the Sampling Rate and Signal Amplitude Set the sampling rate (Fs) to 200MHz and the input signal amplitude to -2dBFS.

Step 2: Setting the Over Sampling Ratio (OSR) The OSR is set to 20 (BW = 5MHz), which means that the sampling frequency (Fs) is 20 times higher than the signal bandwidth (BW).

Step 3: Selecting the Architecture Three architectures are available: CIFF, CIFB, and CIFF-FB. Select one architecture based on your requirements.

Step 4: Designing the Loop Filter Design the loop filter based on the selected architecture. The loop filter can be designed using a tool like MATLAB's Filter Designer.

Step 5: Implementing the Quantizer Implement the 4-bit quantizer using a quantizer block in MATLAB SIMULINK.

Step 6: Implementing the Delta-Sigma Modulator Implement the delta-sigma modulator using the selected architecture, the loop filter, and the quantizer.

Step 7: Testing and Evaluating the DSM Test the DSM by simulating it with different input signals and evaluate its performance using metrics like Signal-to-Noise Ratio (SNR), Total Harmonic Distortion (THD), and Effective Number of Bits (ENOB).

In summary, building an ideal DT 4th-order DSM with a 4-bit quantizer in MATLAB SIMULINK with using CIFF/CIFB/CIFF-FB architecture involves setting the sampling rate and signal amplitude, selecting the OSR, selecting the architecture, designing the loop filter, implementing the quantizer, implementing the delta-sigma modulator, and testing and evaluating the DSM.