FMCW radar and calculating ADC Sampling rate

1. How do you calculate sampling rate for ADC?
2. How do you calculate sampling rate of a signal?
3. What is sampling frequency in radar?
4. How does ADC increase sampling rate?

How do you calculate sampling rate for ADC?

For 28069, ADC converion time is 13 ADCCLKs(45MHz), then sample rate = 1/(13/45M)=3.46M. For 280049, ADC conversion time is 21 SYSCLKs (100MHz), and S/H time is 8 SYSCLKs, then the sample rate = 1/[(21+8)/100M]=3.45M.

How do you calculate sampling rate of a signal?

The sampling frequency or sampling rate, f_s, is the average number of samples obtained in one second, thus f_s = 1/T. Its unit is sample per second or hertz e.g. 48 kHz is 48,000 samples per second.

What is sampling frequency in radar?

At this stage they are referred to as video signals, and have a typical bandwidth in the range 250 KHz to 5 MHz. The Sampling Theorem therefore indicates sampling rates between about 500 KHz and 10 MHz. Such rates are well within the capabilities of modern analog-to-digital converters (ADCs).

How does ADC increase sampling rate?

To increase the sampling rate of an ADC whose comparators are already running at maximum speed, the number of upper (coarse) and lower (fine) quantizer blocks must be extended. This can be achieved by implementing an N-bit, coarse ADC and two time-interleaved, N-bit, fine ADCs (Figure 2).