Abstract: We propose a two-dimensional (2D) resonant-tunneling-diode (RTD) oscillator array to generate quasi-plane terahertz (THz) waves. Dual-RTD slot antennas are employed to form the 2D array ...

Abstract: Aiming at the typical environment of underwater target passive positioning, the performance of a two-dimensional DOA estimation method based on L-shaped array is simulated. Firstly, the ...

Two cannonballs were found surprisingly close together but one was wrapped in a thick “cocoon” from sitting in water. A careful hammer tap reveals a hollow tone, then the crust begins to break away.

JP Morgan has upgraded two of Europe's largest oil companies and identified its preferred stocks to play a potential surge in oil prices, as full-scale military strikes in the Middle East transform ...