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Metal Mesh Filters for Terahertz Receivers

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Virginia Diodes, Inc.
979 Second Street SE, Suite 309 Charlottesville, VA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2005
Title: Metal Mesh Filters for Terahertz Receivers
Agency: NASA
Contract: NNC05CA80C
Award Amount: $70,000.00


The best low-noise receiver solutions for frequencies above about 800 GHz rely on either a low-noise bolometric direct detector or a hot electron bolometric mixer. These receivers yield near quantum limited noise performance and have ultra broad signal bandwidth [ , , ]. However, due to their extreme sensitivity and inherently broad bandwidth the receivers are very sensitive to stray radiation. For direct detectors an input filter is required to define the receiver's frequency band and reject out of band energy. In the case of a heterodyne receiver, the signal band is defined by the back-end electronics, however, input filters are required to eliminate stray radiation that can saturate the mixer or create signal artifacts that degrade performance and prevent accurate calibration. Through this SBIR project VDI proposes to create a new generation of high performance and cost effective metal mesh filters for terahertz receivers based on innovative filter designs and fabrication techniques. These new technologies will allow the development of cost-effective and practical filters with the range of characteristics required for NASA's terahertz frequency space science and Earth science remote sensing programs.

Principal Investigator:

Jeffrey L. Hesler

Business Contact:

Thomas W. Crowe
Business Official
Small Business Information at Submission:

Virginia Diodes, Inc.
321 West Main Street Charlottesville, VA 22903

EIN/Tax ID: 541845221
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No