now

I’m exploring FPGA-based control for ultrasonic phased arrays, focusing on multichannel phase synthesis, waveform synchronization, and the timing of array-wide parameter updates.

Alongside the digital control, I’m studying acoustic field modeling, phase compensation, and acoustic radiation forces for levitation and three-dimensional particle manipulation. I’m interested in how array geometry, channel calibration, and trajectory parameters affect trapping stability.

Related hardware interests include multichannel driver circuits, high-speed PCB layout, differential pair routing, and signal integrity, particularly the effect of clock distribution, impedance, and return paths on a system.

I’m also learning more about Android platform internals, including AOSP framework services, Binder IPC, HAL boundaries, and GKI/KMI compatibility. Related topics include service lifecycles, kernel modules, GNSS data processing, and NMEA parsing.

I publish selected notes and experiments as I work through these topics.