QAM Modulator and Demodulator combine two amplitude modulation signals into a single data transfer channel: 1. Technique of modifying any one characteristic (amplitude, frequency, or phase) of a ...

fixed-width square wave pulse at a set point in the received FM signal’s waveform, usually at the zero-crossing point. Since the frequency of the modulated carrier changes, the duty cycle of the ...

A simple tweak to the usual setup is all that is needed to enhance a spectroscopy technique that uses waves in the terahertz ...

For example, in AM radio, the voltage (amplitude) of a carrier with a fixed center frequency (the station's channel) is varied (modulated) by the analog audio signal.

Utilize analog and digital signal processing techniques in building a low-cost high-precision digital oscilloscope for high ...

This in turn will set the requirements for the spurs for the input clock (from a PLL), in order to achieve a specific SFDR. If we consider the time at which a signal passes through a threshold, we can ...

Current super-resolution microscopes reveal structural details but lack chemical specificity. To overcome this limitation, researchers developed structured illumination mid-infrared photothermal ...