Ultrashort pulses play a significant role in spectroscopic applications. Their broad spectral bandwidth enables simultaneous characterization of the sample at various frequencies, eliminating the need ...

Direct conversion, or zero IF, receivers are popular in applications where the need to reduce power consumption, reduce costs and extend battery life are behind requests to use 'all the Nyquist ...

This rule of thumb enables us to estimate the highest frequency to worry about for a data signal. Spoiler summary: At the Tx, it is 2.5× the bitrate. At the Rx, in a lossy channel, it is the Nyquist: ...

Bravo to Harry Nyquist and Claude Shannon! In the 1920s, these gentlemen created the now-well-known Nyquist theorem, which states that when sampling a signal at discrete intervals, the sampling must ...

In an October column about undersampling, I explained how a data acquisition system could use aliasing to move signals within bandwidth x into a lower-frequency portion of the spectrum. That column ...

Essex-based e2v has revealed a 12bit DAC with an analogue bandwidth that extends beyond 7GHz. The single-core device samples at up to 4.5Gsample/s without interpolation. Called EV12DS400, it includes ...