The Fourth International Fab Lab Forum and Symposium on Digital Fabrication Field Fabrication of Advanced Antennas George D. Sergiadis Aristotle University of Thessaloniki, Greece School of Engineering, Dept. of Electrical & Computer Engineering Telecommunications Laboratory
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Communications, communications, communications, communications We need all sorts of communications, voice, data…
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Rural mesh model - main components Hardware: –Routers –Antennas, cables –Power supplies - Solar –Structural solutions Software: –Networking and dynamic multihop routing –QOS control –Management –Security and privacy
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Advanced Antennas
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Advanced Antennas at 2 to 5 GHz 1.High Gain 2.High Manufacturing Accuracy 3.Specialized Materials 4.High cost Price: $349.90
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Field produced Antennas
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Fab Lab Approach Very low material cost, 1 to 3 US $ Low Manufacturing Sensitivity Locally Found Materials Fab Lab easily reproducible, by unskilled “Fablabers”, using the Fab Lab tools
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Collinear Antennas, 2.4 GHz, 3 to 9 dbi
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Planar Antennas, 8 dipoles, 2.4 GHz, 9 dbi
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Wide bandwidth
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August High gain
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Very high gain systems, 64 dipoles Planar design Paralleling of elementary dipoles Glass dielectric Phased feeding But, Sensitive to Glass thickness and e r
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Challenging research issues Glass dielectric constant variability Glass losses Glass width variability Dielectric homogeneity, higher frequencies Manufacturing tolerant design Low cost testing tools
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August New approach – Air dielectric – 9 to 13 dbi
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August First simulation results
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Dual band function, 2.4 and 5 GHz operation
George Sergiadis The Fourth International Fab Lab Forum and Symposium on Digital Fabrication – Chicago, August Related publications “A wideband printed dipole antenna with optimized tapered feeding balun for ISM and FWA bands” Microwave and Optical Technology Letters (Wiley), Vol. 43, No. 5, pp , December “ Wideband Printed Dipole Antenna Parasitically Enhanced with Over-an-Octave bandwidth. Dual-band Variant for WLAN Applications ” Microwave and Optical Technology Letters (Wiley), Vol. 48, No.3, pp , March 2006.
The Fourth International Fab Lab Forum and Symposium on Digital Fabrication Field Fabrication of Advanced Antennas George D. Sergiadis Aristotle University of Thessaloniki, Greece School of Engineering, Dept. of Electrical & Computer Engineering Telecommunications Laboratory