1. Pavel Miskovsky Ph.D. candidate Sept. - 2005 Telecommunications Technological Center of Catalonia (CTTC)

2. 2 / 14 UWB Antennas New facilities “Parc Mediterrani de la Tecnologia” 3.500 m 2 building 3 floors (970 m 2 each for utilization) Offices, meeting rooms, training room, labs and workshops, terrace for antenna use

3. 3 / 14 UWB Antennas  Antenna Requirements:  Low cost  Easy to integrate  Small size  Wide-band  Omnidirectional  CTTC Approach:  Planar technology  Self-Complementary  Bow-tie based topology Double-sided Technology FCC definition  Fractional bandwidth ≥ 20% or >500MHz absolute bandwidth  3.1GHz – 10.6 GHz Short pulses [ns]  No carrier  Gaussian shape and derivates  Without DC component

4. 4 / 14 UWB Antennas Antenna Subsystem Radiating Unit Matching/ Filtering Network Matching Technologies Double-Sided Bow-tie Shaped Double-Sided Matching impedance Filtering Microstrip To Double-Sided Exploring the potential of double-sides technology in terms of impedance matching, gain and polarization

5. 5 / 14 UWB Antennas Antenna, matching network and technology transformer -Bow-tie shaped antenna with a circle tangent to a 90 deg triangle - feedline width optimized

6. 6 / 14 UWB Antennas Measurements

7. 7 / 14 UWB Antennas copolar crosspolar Measured radiations patterns, E-plane (xy)

8. 8 / 14 UWB Antennas Transfer function dependence on frequency and relative orientation (E-plane) between two identical antennas

9. 9 / 14 24681012 -30 -25 -20 -15 -10 -5 0 GHz Return Losses (dB) 50 cent antenna Measure HFSS simulation UWB (3.1 -10.6 GHz) UWB 50 cent antenna