The subwoofer drivers have a heavy-duty steel chassis, paper cone, and rubber surround. Driver diameters are 203mm (Q SUB80), 254mm (Q SUB100), and 305mm (Q SUB120). The voice coils are 38mm for Q ...

By levitating nanoparticles with laser beams, scientists have built an antenna 10,000 times smaller than typical ...

Abstract: Reconstructing an Amplitude-modulated (AM) signal with a modulation index below 0.01 is a significant challenge for conventional and established direct and digital demodulation methods. This ...

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To solve this problem, the present study employs a double-conical splicing technique to achieve quasi-single-mode SFBG, effectively suppressing the multimode effect and successfully realizing ...