NASA SBIR 2008 Solicitation


PROPOSAL NUMBER: 08-1 O1.07-9782
SUBTOPIC TITLE: Long Range Space RF Telecommunications
PROPOSAL TITLE: A 60-85% efficient X- & K-Band 1KWatt solid-state Power Amplifier using GaN-on-Diamond

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Group4 Labs, LLC
1600 Adams Drive, Suite 112
Menlo Park, CA 94025 - 1449
(650) 688-5760

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
1600 Adams Drive, Suite 112
Menlo Park, CA 94025 - 1449
(408) 887-6682

Expected Technology Readiness Level (TRL) upon completion of contract: 3 to 4

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
This Phase-I SBIR proposal proposes for the first time ever, the use of a new class of materials - Gallium Nitride-on-diamond - in the manufacture of very high efficiency, solid-state Power Amplifier MMICs that will operate in X-band (8.4GHz), and Ka-band (26-38GHz). In this particular proposal, the first ever 80% efficient 8.4GHz and 34-38GHz GaN-on-Diamond FETs will be demonstrated, exhibiting a record 5-10 W/mm at record temperature levels. Arrays of these FETs will be used to form 60%+ efficient 150W-1KWatt Power Amplifiers (PA) MMICs in Phase-II. Polycrystalline free standing CVD diamond – nature's most efficient thermal conductor – enables nearly perfect heat extraction from a "hot" device (Thermal conductivities of GaAs, Si, and SiC are 35W/m/K, 150W/m/K and 390W/m/K respectively; diamond ranges from 1200-2000 W/m/K depending on quality). In the proposed scheme, the device's active epitaxial layers are removed from their original host substrate and transferred to a specially treated low-cost CVD diamond substrate using a proprietary low-cost manufacturable scheme. The active junction rests just 20-nm from diamond. The diamond technology proposed here may be applied to GaAs, SiC, SiGe, etc.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Group4 Labs shall manufacture 150W-1KW X-band, and Ka-band (26-38GHz) solid-state Power Amplifiers for use in NASA's Space-Space and Space-Earth RF equipment. Group4 Labs' partners and NASA contractors (Raytheon and Lockheed Marting) shall manufacture the space telecommunications systems (e.g. modules, satelites).

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
GaN-on-Diamond Power Amplifiers may be used for Base-stations (3G and WiMax). Also, GaN-on-Diamond wafers ay be used for blue/white LEDs (displays), and Laser Diodes (storage, DVD, litho).

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Airport Infrastructure and Safety
Attitude Determination and Control
Beamed Energy
Guidance, Navigation, and Control
Large Antennas and Telescopes
Radiation Shielding Materials
Radiation-Hard/Resistant Electronics
Semi-Conductors/Solid State Device Materials
Sensor Webs/Distributed Sensors
Spaceport Infrastructure and Safety
Substrate Transfer Technology
Telemetry, Tracking and Control
Thermal Insulating Materials
Ultra-High Density/Low Power

Form Generated on 11-24-08 11:56