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DS4T4 Differential Dual Polarized Antenna Array Design

DS4T4 Differential Dual Polarized Antenna Array Design. Eloy de Lera Acedo Research Associate at Cavendish Laboratory, University of Cambridge. Index. Work at ASTRON – FLOWPAD 3 (Feb – May 2007) Work at FG-IGN/UC3M – FIDA 3 (Jan 2006 – Sep 2007). Index. Work at ASTRON – FLOWPAD 3

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DS4T4 Differential Dual Polarized Antenna Array Design

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  1. DS4T4Differential Dual Polarized Antenna Array Design • Eloy de Lera Acedo • Research Associate at Cavendish Laboratory, University of Cambridge

  2. Index • Work at ASTRON – FLOWPAD3 • (Feb – May 2007) • Work at FG-IGN/UC3M – FIDA3 • (Jan 2006 – Sep 2007)

  3. Index • Work at ASTRON – FLOWPAD3 • (Feb – May 2007) • Work at FG-IGN/UC3M – FIDA3 • (Jan 2006 – Sep 2007)

  4. FLOWPAD3Ultra Wide Band Array • Work at ASTRON • FLOWPAD3 (Foilbased LOW cost PAcman Differential Dual polarized Demonstrator) is an active phased array tile of differentially fed tapered slot antenna elements which demonstrates the integration of the results of separated work packages of PACMAN (Phased Array Communication Antennas for Mass-Market Application Needs) and SKADS DS4T4. • The demonstrator will not cover the full requirement specification of SKA antenna, but it will indicate what is achievable in future. • Low Cost is the main target. • Working band: 0.3-1 GHz.

  5. ODD MODE - + 0 0 FLOWPAD3Antenna Model • Diff. technology • Bigger elements • Low cost materials • No Ground plane

  6. FLOWPAD3Ultra Wide Band Array • FLOWPAD3 • Differentially fed antennas (bridge in DLNA board ) • Reduce costs: • Number of LNA’s per square meter. • Down to 73.5. • Low cost Materials, no ground plane.

  7. Future Work • Connection between strokes of antennas • Build and measure final tile

  8. Index • Work at ASTRON – FLOWPAD3 • (Feb – May 2007) • Work at FG-IGN/UC3M – FIDA3 • (Jan 2006 – Sep 2007)

  9. FIDA3FG-IGN Differential Active Antenna Array Centro Astronómico de Yebes (CAY) Fundación General de la Universidad de Alcalá – Instituto Geográfico Nacional (FG-IGN) Departamento de Teoría de la Señal y Comunicaciones – Universidad Carlos III de Madrid (TSC-UC3M)

  10. Work at FG-IGN/UC3MWide Band and Ultra Wide Band Antennas Use of Genetic Algorithms for structure optimization

  11. Work at FG-IGN/UC3MWide Band and Ultra Wide Band Antennas

  12. Work at FG-IGN/UC3MFeeding Systems After optimization: transmission coefficient above -0.45 dB from 0.1 to 1 GHz

  13. Work at FG-IGN/UC3MArrays Edge Effect

  14. FIDA3Ultra Wide Band Array • Array FIDA3: FG-IGN Differential Active Antenna Array • FIDA3 is an active tile of differentially fed antennas to demonstrate the capabilities of differential technology, easiness of fabrication and reduced costs through the use of big elements. • Working band: 0.3-1 GHz.

  15. FIDA3Ultra Wide Band Array • FIDA3: • Differentially fed antennas – Bunny Ears • No extra substrate, no ground plane. • Aluminum elements are being considered • Big elements. Reduced number of LNAs/m2

  16. FIDA3Discrete DA Real Circuit (ATF 34143):

  17. FIDA3Discrete DA Balanced DA

  18. Future Work • Optimize antenna performance • Measure LNAs • Feeding network • Build and measure final tile

  19. Thanks for your attention

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