| Sol No.: |
Navy SBIR FY2010.1 |
| Topic No.: |
N101-104 |
| Topic Title: |
Co-Site Interference Mitigation in Phased Arrays |
| Proposal No.: |
N101-104-0451 |
| Firm: |
Toyon Research Corp.
6800 Cortona Drive
Goleta, California 93117-3021 |
| Contact: |
Michael Gilbert |
| Phone: |
(805) 968-6787 |
| Web Site: |
www.toyon.com |
| 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. |
| Benefits: |
The proposed project will improve the state of the art in collocated antenna arrays. For the U.S. defense community, this provides a means for better utilizing the limited space on military platforms. For the commercial sector, it provides a means to incorporate full duplex communication while utilizing closely spaced transmit and receive antennas. |