KAIST researchers tested optical frequency comb lasers as reference signals for radio astronomy, aiming to synchronize radio telescopes with light-based timing in VLBI observations.

The mystery of fast radio bursts (FRBs) from space may be a step closer to being solved. Astronomers studying a repeating signal from a nearby galaxy have detected radiation at the lowest frequency of ...

The low radio frequency sky survey was one of the important research projects at the Raman Research Institute (RRI) during the early 1980s. Its main purpose was to image the radio emission from the ...

What are harmonics in RF systems? A given signal’s second harmonic is approximately twice the given signal’s fundamental frequency. Ideally, amplifiers are expected to have zero non-linearities in the ...

The search for extraterrestrial intelligence (SETI) continues as scientists look to low-frequency radio waves that have long gone unexplored. When you purchase through links on our site, we may earn ...

Radio frequency (RF) refers to the part of the electromagnetic spectrum where electromagnetic waves can be generated by alternating current fed to an antenna. It spans from around 3 kHz to 300 GHz. RF ...