Repeating fast radio burst shows diverse activity and hints at magnetar origin

Indian astronomers have performed multi-frequency observations of a repeating fast radio burst designated FRB 20201124A.

THz spectroscopy system bypasses long-standing tradeoff between spectral and spatial resolution

Terahertz (THz) radiation, which occupies the frequency band between microwaves and infrared light, is essential in many next ...
IEEE

Multiple Fourier Series Method for Amplitude-Frequency Characteristics of PWM Pulses With Amplitude-Frequency Time-Varying Modulation Signals

Abstract: With increasing penetration of renewable energy generation and power electronic converters, waveform distortion and resonance related to high-frequency harmonics and interharmonics ...
IEEE

Pulse Alternation Modulation for Four-Level Buck/Boost Converter With Full Voltage ZVS Range

Abstract: In this letter, a pulse alternation modulation (PAM) for a four-level buck/boost (FLBB) converter is proposed. The inherent flaws of the existing modulations are analyzed. The low slope of ...