Very Low Frequency Receiver front end with high sensitivity and frequency selectivity

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-13-M-1662
Agency Tracking Number: F131-137-1047
Amount: $145,360.00
Phase: Phase I
Program: SBIR
Awards Year: 2013
Solicitation Year: 2013
Solicitation Topic Code: AF131-137
Solicitation Number: 2013.1
Small Business Information
Diversified Technologies, Inc.
35 Wiggins Ave., Bedford, MA, -
DUNS: 602959579
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Neal Butler
 Chief Scientist
 (781) 275-9444
Business Contact
 Mike Kempkes
Title: VP Marketing
Phone: (781) 275-9444
Research Institution
ABSTRACT: Diversified Technologies, Inc. (DTI) will design a high performance, low noise analog portion of the VLF receiver front end, optimized for 15 to 60 kHz operation. DTI will integrate the analog front end with a commercial 24 bit oversampled analog-to-digital converter with an output data rate over 200 kHz. Converters of this type combined with a properly designed analog preamplifier will reject unwanted signals by at least 30 dB more than the Stanford AWESOME receiver"s 16 bit converter could tolerate. Finally, DTI recognizes that VLF receivers must be capable of reliable performance in harsh airborne conditions, tolerating far more interference and receive far weaker signals than legacy receivers were designed for. DTI will locate the front end of the receiver within the antenna housing such that the digital signal output is carried via optical fiber to the remote demodulator. The entire antenna and front end may then be electrostatically shielded. BENEFIT: Combining the state-of-the-art in VLF receivers with COTS components will allow for a highly effective, inexpensive solution for the incorporation of AF and Navy VLF transmission systems. Development and fielding of VLF receivers through this SBIR effort builds on DTI"s capabilities in manufacturing MIL-QUAL electronics, and will expand our technical capabilities in two related directions RF systems for the US Military, and VLF subsystems. Both of these areas will broaden current military capabilities in radar and power conversion systems.

* information listed above is at the time of submission.

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