Project Title:
A One-Gigahertz, 256-Channel, Low-Power, Single-Chip, CMOS Digital Correlator Spectrometer
08.14-0126
910029
A One-Gigahertz, 256-Channel, Low-Power, Single-Chip, CMOS Digital Correlator Spectrometer
Spaceborne, Inc.
742 Foothill Blvd, Suite 2B
La Canada
CA
91011
C.
Timoc
818-952-0126
JPL
NAS7-1167
159
08.14-0126
910029
Abstract:
A One-Gigahertz, 256-Channel, Low-Power, Single-Chip, CMOS Digital Correlator Spectrometer
The innovation is based on the recognition that order-of-magnitude improvements in
the performance-to-cost ratio of digital correlating spectrometers can be achieved
with a combination of systolic architecture, pipelined differential logic (PDL) circuits,
a low-skew clock distribution network, and the standard 0.8 m CMOS fabrication process.
The objectives of Phase I are to design, simulate, lay out, fabricate, and evaluate
the performance of a 1 GHz, 16-channel, CMOS correlator, which is anticipated to
provide a factor of three increase in the performance-to-cost ratio relative to existing
correlators. It is anticipated that this project (Phases I and II) will result in
a digital correlator spectrometer with the following features: 1 gigasample per second;
256 channels; a 32-bit counter providing up to four seconds integration time at 1
GHz; 40 milliwatts of DC power per channel; and extremely small weight and size.
Digital correlators are used in commercial applications such as global positioning
satellite navigation receivers, wireless area networks, low-power commercial spread-spectrum
communications (in three 1 W FCC bands), and cellular and cordless telephones.
digital correlator, autocorrelator, correlator spectrometer