期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 21, 期 3, 页码 883-890出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2010.2095399
关键词
Cryogenic electronics; digital radio; satellite communication; sigma-delta modulation
资金
- Office of Naval Research
Superconductor digital receiver systems of increasing functionality, modularity and user-friendliness have been developed. The modular design methodology ensures that within its input-output and heat load capacity, the system can be reconfigured to perform a different function by changing the chip module and by reprogramming FPGA-based digital signal processors. One of the systems (ADR-004), originally equipped with a 10 x 10 mm(2) channelizing receiver chip for signals intelligence application, was reconfigured with a 5 x 5 mm(2) 1.1-GHz bandpass ADC chip to perform world's first multi-net Link-16 demonstration at a U. S. Navy facility. Substantial improvements in system integration have been obtained in each successive generation of digital-RF receiver systems. The latest (third) generation system (ADR-005), hosting a 5 x 5 mm(2) 7.5-GHz bandpass ADC chip and an FPGA channelizer, successfully repeated the over-the-air SATCOM demonstration performed previously using a 1 - cm(2) single-chip bandpass digital receiver with an on-chip superconductor channelizer. This system ran error-free for over 12 hours with and without a low-noise amplifier. To our knowledge, this is the first time an X-band SATCOM receiver has been operated without analog amplification and down-conversion in a military application.
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