We describe the signal processing logic, firmware, and software for a frequency-domain multiplexed biasing and demodulation system that reads out transition-edge-sensor bolometer arrays for millimeter-wavelength cosmology telescopes. This system replaces a mixed-signal readout back end with a much smaller and more power-efficient system relying on field-programmable gate arrays for control, computation, and signal processing. The new system is sufficiently robust, automated, and power efficient to be flown on stratospheric balloon-borne telescopes and is being developed further for satellite applications.
|Original language||English (US)|
|Number of pages||10|
|Journal||IEEE Transactions on Instrumentation and Measurement|
|State||Published - Jan 1 2012|
- Digital signal processing
- digital up/down converters
- field-programmable gate arrays (FPGAs)