Proceedings ArticleDOI
High Power Combining of Ka-Band TWTs for Deep Space Communications
Edwin G. Wintucky,Rainee N. Simons,K.R. Vaden,G.G. Lesny,J.L. Glass +4 more
- pp 63-64
Reads0
Chats0
TLDR
In this paper, the results of a high efficiency power combining demonstration of two 100 W Ka-band space TWTs using a 4-port magic-T hybrid junction-based waveguide circuit are presented.Abstract:
This paper presents the results of a high efficiency power combining demonstration of two 100 W Ka-band space TWTs using a 4-port magic-T hybrid junction-based waveguide circuit. Power combining efficiencies of about 90% over a 1 GHz frequency band centered at 32.05 GHz and a high data transmission rate of 622 Mbps were successfully demonstrated.read more
Citations
More filters
Journal ArticleDOI
Advances in Space Traveling-Wave Tubes for NASA Missions
Jeffrey D. Wilson,Edwin G. Wintucky,K.R. Vaden,Dale A. Force,Isay L. Krainsky,Rainee N. Simons,Neal R. Robbins,W.L. Menninger,D.R. Dibb,David E. Lewis +9 more
TL;DR: Technical advances in computer modeling, design techniques, materials, and fabrication have enabled power efficiency to increase by almost 40% and the output power/mass figure-of-merit to increased by an order of magnitude during this period.
Journal ArticleDOI
Power Flexible Ka-band Traveling Wave Tube Amplifiers of Up to 250-W RF for Space Communications
TL;DR: The latest model Ka-band helix traveling wave tube (TWT) amplifier designed and manufactured for onboard space satellite-communications systems at L-3 Communications Electron Technologies, Inc. is significantly improved over previous generations.
Journal ArticleDOI
Ultra-High Power and Efficiency Space Traveling-Wave Tube Amplifier Power Combiner With Reduced Size and Mass for NASA Missions
TL;DR: In this paper, a high power high efficiency Ka-band combiner for multiple traveling-wave tubes (TWTs) is presented, based on a novel hybrid magic-T waveguide circuit design.
Advances in Space Traveling-Wave Tubes for NASA Missions Used for amplifying space communications signals, these tubes continue to efficiently and reliably deliver high power and to outperform solid-state components.
Jeffrey D. Wilson,Edwin G. Wintucky,Karl R. Vaden,Dale A. Force,Isay L. Krainsky,Rainee N. Simons,Neal R. Robbins,W.L. Menninger,D.R. Dibb,David E. Lewis +9 more
TL;DR: The performance and reliability of traveling-wave tubes (TWTs) utilized in amplifying space communication signals for NASA missions have been achieved over the last three decades through collaborative efforts between NASA and primarily L-3 Communications Electron Technologies, Inc..
High-Capacity Communications from Martian Distances
W. Dan Williams,Michael Collins,Richard Hodges,Richard Orr,O. Scott Sands,Leonard Schuchman,Hemali Vyas +6 more
TL;DR: The study will dive into the spacecraft downlink system design and communication link analysis between the relay orbiter and ground network on Earth for data rates ranging from 100 Mbps to 1 Gbps based on the assumptions and link assumptions.
References
More filters
Proceedings ArticleDOI
Computer aided design of Ka-band waveguide power combining architectures for interplanetary spacecraft
K.R. Vaden,Rainee N. Simons +1 more
Abstract: Communication systems for future NASA interplanetary spacecraft require transmitter powers ranging from several hundred watts to kilowatts Several hybrid junctions are considered as elements within a corporate combining architecture for high power Ka-band traveling-wave tube amplifiers (TWTA) This paper presents the computer-aided designs and simulated transmission characteristics of several hybrid circuits for a low loss, high power waveguide combiner
Proceedings ArticleDOI
Waveguide power combiner demonstration for multiple high power millimeter wave TWTAs
TL;DR: In this article, the results of a proof-of-concept demonstration of the power combining Ka-band waveguide circuit design and test procedure using two K-band TWTAs (Varian model VZA6902V3 and Logimetrics model A440/KA-1066) were previously employed in data uplink evaluation terminals at 29.1 to 29.6 GHz for the NASA Advanced Communications Technology Satellite (ACTS) program.
Proceedings ArticleDOI
High power, high efficiency 32 GHz space traveling wave tube
Neal R. Robbins,H.C. Limburg,D.R. Dibb,R.T. Benton,J.T. Burdette,W.L. Menninger,Xiaoling Zhai +6 more
TL;DR: The Boeing 999H is a helix TWT with PPM focusing in a conduction-cooled package, and it is designed for greater than 12 years of mission life.
Related Papers (5)
High power and efficiency power combining of space TWTAs with waveguide magic-T for Satellite communication
Yawei Liu,Xiaobao Su +1 more