Learn how to make your own DIY portable speaker for your smartphone using basic components like mini speakers, an amplifier ...

Abstract: With the fast development of advanced communication systems, wideband low-noise amplifiers (LNAs) have become more and more critical as they determine the overall performance of the ...

Abstract: In order to extract weak sensing signal, a practical lock-in amplifier circuit is designed. By generating two orthogonal reference signals multiplied by the measured signal after lowing ...