Co-Site Interference Mitigation in Phased Arrays

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N66001-10-M-5112
Agency Tracking Number: N101-104-0451
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: N101-104
Solicitation Number: 2010.1
Small Business Information
Toyon Research Corp.
6800 Cortona Drive, Goleta, CA, 93117
DUNS: 054672662
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Michael Gilbert
 Senior Staff Analyst
 (805) 968-6787
 mgilbert@toyon.com
Business Contact
 Marcella Lindbery
Title: Director of Finance
Phone: (805) 968-6787
Email: mlindbery@toyon.com
Research Institution
N/A
Abstract
The available space for antennas within a submarine sail is extremely limited. To achieve the desired multi-frequency capability for future submarine communications systems, phased array apertures will need to be collocated within a single housing. The resulting close proximity of transmit and receive antennas and the requirement for full duplex communication lead to a challenging electromagnetic interference (EMI) problem. The EMI is especially severe at X-band frequencies where the X-band transmit array and the X-K-band receive array both operate simultaneously. Fortunately, there is some room to physically separate the X-band transmit array from the X-K-band receive array. A choke structure and/or patterned absorber inserted into the space between these two arrays can reduce the X-band EMI while passing through signals from the higher frequency transmit arrays (Ka-band and Q-band) that share the same space. Toyon has extensive experience designing chokes and patterned absorbers tailored to mitigate EMI with a minimal thickness and weight. Toyon proposes to use this experience to investigate the use of an X-band choke/absorber structure that is transparent to signals in the Ka-Q bands.

* information listed above is at the time of submission.

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