USA flag logo/image

An Official Website of the United States Government

High-Efficiency, High-Power Ka-Band Elliptic-Beam Traveling-Wave-Tube Amplifier…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Beam Power Technology, Inc.
142 North Road, Suite F-130 Sudbury, MA 01776-1142
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: High-Efficiency, High-Power Ka-Band Elliptic-Beam Traveling-Wave-Tube Amplifier for Long-Range Space RF Telecommunications
Agency: NASA
Contract: NNX11CF23P
Award Amount: $99,993.00


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.

Principal Investigator:

Jing Zhou
Principal Investigator

Business Contact:

Michael Lawrence
Business Official
Small Business Information at Submission:

Beam Power Technology, Inc.
142 North Rd. Suite F130 Sudbury, MA 01776-1142

EIN/Tax ID: 651194710
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No