This paper investigates the usability of $4 \\times 4$ Butler matrices for 16-QAM modulation and demodulation. The presented theoretical analysis shows that an appropriate choice of demodulator matrix ...

This paper presents the design and implementation of a Software Defined Radio (SDR) system leveraging FPGA technology to generate and demodulate Amplitude Shift Keying (ASK), Frequency Shift Keying ...

In this study, an ion-funnel-integrated photoionization (IFPI) source was developed. Following a systematic investigation of the effects of radio frequency (RF) amplitude on the ion transmission ...