原文传递
Full Duplex Antenna Study.
| 题名： | Full Duplex Antenna Study. |
| 作者： | Filipovic, D. S.; Abdelrahman, A.; Ha, J.; Prasannakumar, P. V. |
| 关键词： | Antennas, Unmanned aerial vehicles, Line of sight, Impedance, Radiation patterns, Prototypes, Star (simultaneous transmit and receive), Star antennas, Handheld radio antenna system, Uas (unmanned aerial systems), Reflection coefficients, Bfn (beamforming networks), Uav (unmanned aerial vehicles) |
| 摘要： | One of the most difficult challenges for RF electronics is achieving a co-channel isolation > 100dB for simultaneous transmit and receive (STAR) from a single aperture without any time / frequency / polarization / beam-pointing multiplexing. For narrow bandwidth channels and transmitted powers in hundreds of watts the isolation must be > 130dB. To achieve gold-STAR capability, the new front-end topologies that combine multiple layers of analog isolation and digital back-end processing are needed. A carefully designed passive antenna subsystem may provide 20-80dB of gold-STAR isolation thus significantly aiding the actual implementation of full duplex RF systems, and then reducing cost. The objective of this project was to conduct detailed study of antenna configurations that may yield high gold-STAR self-interference cancellation for a general set of applications of interest for the US Army. To allow some degree of realism and practical relevance for the conducted research, we considered applications such as: 1) high-gain point-to-point microwave links, 2) UAS communications, and3) handheld radios. The study identified the fundamental and practical challenges, paths for mitigation thereof, tradeoffs, and most importantly antenna configurations that maximize self-interference cancellation with little to no degradation in their performance. Accomplishments: In this research, different design approaches for achieving monostatic STAR antenna functionality on platforms of interest for US Army are investigated. Theoretical and computational studies are conducted to bridge the gap between the proposed technical approaches and the fundamental antenna theory. Based on the herein developed systematic antenna/array design approach, several antenna and array prototypes are built and theoretical findings are fully validated with experiments. |
| 报告类型： | 科技报告 |
相关文献
- THE FULL COST OF TRANSPORTATION IN THE TWIN CITIES REGION.
- History of the Waterways of the Atlantic Coast of the United States
- ROAD FINANCE ALTERNATIVES: AN ANALYSIS OF METRO-AREA ROAD TAXES.
- History of the Gulf Intracoastal Waterway
- HIGHWAY IMPROVEMENTS AND LAND DEVELOPMENT PATTERNS IN THE GREATER TWIN CITIES AREA, 1970-1997: MEASURING THE CONNECTIONS.
- URBANIZATION OF THE MINNESOTA COUNTRYSIDE: POPULATION CHANGE AND LOW-DENSITY DEVELOPMENT NEAR MINNESOTA'S REGIONAL CENTERS, 1970-2000.
检索历史
应用推荐
