technicalDSPCIC filterFPGA
Understanding CIC Decimation Filters for Feedback Control
A deep dive into Cascaded Integrator-Comb (CIC) filters: The multiplier-less architecture that makes high-speed decimation efficient on FPGAs.
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Technical Articles
Deep dives into FPGA design, digital signal processing, feedback control theory, and precision measurement techniques.
lock-in amplifierPDHFPGASystemVerilogcavity lockingoptical
Digital Lock-In Amplification on FPGA: From PDH Locking to Modulation Transfer Spectroscopy
How to implement a digital lock-in amplifier in RTL: DDS reference generation, quadrature demodulation, and low-pass filtering — with direct application to Pound-Drever-Hall (PDH) cavity locking.
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PIDFPGASystemVerilogfixed-pointfeedback control
Implementing a PID Controller on FPGA: Fixed-Point Arithmetic, Anti-Windup, and Loop Bandwidth
A practical guide to implementing a digital PID controller in SystemVerilog: Why fixed-point math is king for latency, how to handle integrator windup, and achieving sub-microsecond loop closure.
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announcementFPGAfeedback controlopen-source
Introducing Quanta Control: FPGA Feedback at 125 MHz
We're building precision feedback control systems on commodity FPGA hardware. By combining real-time deterministic logic with modern web-based control, we're making high-performance feedback accessible to every laboratory.
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Red PitayaZynqFPGAhardwareProductization
Red Pitaya and the Zynq SoC: A Platform Deep Dive for Precision Control
Why the Red Pitaya is an exceptional platform for laboratory feedback control: Zynq-7000 architecture, and why moving from a laboratory prototype to a commercial optical frequency comb product requires custom hardware design.
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architectureFPGAoptical frequency combKerr-combEO-combfeedback control
FPGA-Based Feedback Control for Optical Frequency Combs
How we use commodity FPGA hardware to stabilize Kerr-comb and EO-comb systems with sub-microsecond loop latency — and why open, transparent control infrastructure matters for precision optical research.
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