Innovative Wideband All Digital Receiver (ADR)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00039-07-C-0124
Agency Tracking Number: N071-110-0988
Amount: $69,590.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: N07-110
Solicitation Number: 2007.1
Small Business Information
10070 Barnes Canyon Road, San Diego, CA, 92121
DUNS: 107928806
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Michael Larsen
 Senior Scientist
 (858) 373-2770
Business Contact
 Sandra Quintero
Title: Senior Contracts Administrator
Phone: (858) 373-2711
Research Institution
ISL propose to combine state-of-the-art advances in signal processing algorithms and architectures and superconducting electronics to design and fabricate an essentially all-digital receiver (ADR) that will both mitigate the effects of EMI and reduce digital storage requirements. An innovative Analog-to-Information (A-to-I) converter approach will be designed that eliminates many of the redundant bits during the conversion process. The unique aspect of ISL's approach is the use of linear predictive processing in conjunction with implicit non-uniform sampling. Non-uniform sampling is required to incorporate a linear predictor into the concept to achieve data reduction. In this approach, the RF signal from the antenna is bandpass filtered with a pre-selection filter that uses High-Temperature Superconducting (HTS) filters in order to define the input bandwidth and suppress out-of-band interference. The difference of the output from the pre-selection filter and the output of the linear prediction filter generates a prediction error signal. For many military systems the single most important piece of prior knowledge is that the desired signals are weak with respect to the other signals within the band. This observation means that in many applications, prediction of the strong signals followed by subtracting them out of the composite in-band signal mix, is an attractive method to reduce the dynamic range of the received signal and thus the number of digital bits required to represent the signal.

* information listed above is at the time of submission.

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