An alien radio signal from K2-155 d? Are there any alien civilizations out there? For several decades, scientists have been searching for evidence that they exist. That effort is collectively known as ...

Pulsar signals obtained with radio telescopes are extremely weak. Generally, there are two primary difficulties in pulsar signal processing—one is the radio-frequency interference (RFI) mitigation, ...

Terahertz technology could help us meet the ever-increasing demand for faster data transfer rates. However, the down-conversion of a terahertz signal to arbitrary lower frequencies is difficult. In a ...

Frequency-to-voltage converters are electronic devices that convert current signal inputs to proportional voltage outputs. They include an operational amplifier for simple linear signal processing and ...

Coherent interleaved sampling is a new technique that can acquire data faster with more data points than sequential sampling. Engineers who need to characterize semiconductor devices, high-speed ...

Frequency domain electromagnetic (FDEM) methods are used to detect variations in subsurface electrical conductivity (or its inverse, resistivity) using electromagnetic induction (EMI) principles. FDEM ...

Frequency-to-current converters are electronic circuits that produce an output current proportional or related to the frequency of an alternating current (AC) input of a specific frequency. The input ...