High-Efficiency, High-Power Ka-Band Elliptic-Beam Traveling-Wave-Tube Amplifier for Long-Range Space RF Telecommunications

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,993.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CF23P
Award Id:
n/a
Agency Tracking Number:
104774
Solicitation Year:
2010
Solicitation Topic Code:
O1.05
Solicitation Number:
n/a
Small Business Information
142 North Rd. Suite F130, Sudbury, MA, 01776-1142
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
605667125
Principal Investigator:
Jing Zhou
Principal Investigator
(617) 308-6378
jzhou@beampower.com
Business Contact:
Michael Lawrence
Business Official
(978) 376-0143
mlawrence@beampower.com
Research Institution:
Stub




Abstract
Space telecommunications require amplifiers that are efficient, high-power, wideband, small, lightweight, and highly reliable. Currently, helix traveling wave tube amplifiers (TWTA) are the technology of choice. Conventional helix TWTAs employ circular electron beams. Recently, lightweight circular-beam helix TWTAs have been demonstrated with power output in the range of several hundred watts and overall efficiency in the range of 40 to 60 percent. Despite these advances, there is substantial value in further improvement across all of these areas.Beam Power Technology (BPT) proposes a novel elliptic-beam TWTA which is highly efficient (75%) and has 500 W of CW power, reduced weight, lower voltage and an expected 15+ year lifetime. The average power operation is at a back-off of -6 dB from saturation. The linearity is -35 dBc. The Phase I objective is to determine the feasibility of an elliptic-beam helix TWTA which substantially exceeds the performance levels of conventional helix devices. In Phase II, BPT will complete the engineering design and experimental demonstration of a prototype targeting eventual deployment into satellite applications.

* information listed above is at the time of submission.

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