1 / 12

A Compound Reconfigurable Microstrip Parasitic Array

A Compound Reconfigurable Microstrip Parasitic Array. Mentee: Jacob Block Mentor: Jake Adams. Why Compound Reconfigurable?. Reconfigurable  antenna properties can be changed dynamically by external control Compound reconfigurability Multiple Radiation Patterns

bazyli
Download Presentation

A Compound Reconfigurable Microstrip Parasitic Array

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. A Compound Reconfigurable Microstrip Parasitic Array Mentee: Jacob Block Mentor: Jake Adams

  2. Why Compound Reconfigurable? • Reconfigurable  antenna properties can be changed dynamically by external control • Compound reconfigurability • Multiple Radiation Patterns • Receive signals from multiple directions • Multiple Operating Frequencies • Antennas are designed for specific operating frequencies • WiMAX (3.5 GHz) • WiFi (2.4 GHz) M. Slater, “A compound reconfigurable antenna,” M.S. thesis, University of Illinois, Urbana, IL, 2008.

  3. Microstrip Parasitic Array • Antenna (substrate, ground, patch) • Switches on parasitic elements change pattern/frequency M. Slater, “A compound reconfigurable antenna,” M.S. thesis, University of Illinois, Urbana, IL, 2008.

  4. Radiation Patterns • Yagi-Uda Antenna (dipole cylinders) • Directional radiation pattern Length of Reflector > Length of Driven > Length of Directors

  5. Operating Frequency of Antenna • Frequency Dependent • Length of arms • Switches • Varactor (variable capacitor) • Spacing between arms • Averaging Yagi-Uda Rules of Thumb (Numerical, not Analytic)

  6. 3.5Ghz – Right Tilt 2.4Ghz – Right Tilt 1 pF 10 pF 1 pF 10 pF varactors

  7. Fun Stuff with HFSS2.4 GHz

  8. Fun Stuff with HFSS3.5 GHz

  9. New Design – Reduce Size, Reduce Averaging, Increase Performance • Ground Plane Resonators (slits into the ground plane) • New switching topology • Eliminate Varactors • Simplify DC bias network (less cables) • Less averaging Mustache Meander line

  10. New Switching Topology 3.5Ghz – Right Tilt 2.4Ghz – Right Tilt

  11. Conclusion • What I learned • HFSS • Antennas • Thanks PURE! • Thanks Jake! • Questions? THANKS!

More Related