Denis Chouvæv
Acreo AB, Sweden
Magnus Danestig
Acreo AB, Sweden
Ladda ner artikel
Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium
Linköping Electronic Conference Proceedings 8:19, s.
Publicerad: 2003-11-06
ISBN:
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
A substrate lens concept has been evaluated as possible design solution for low-cost automotive radar. Slot antennas with coplanar feed integrated on a quartz substrate are employed as radiators. Antenna slots are designed to operate at the first resonance to reduce their size and increase input impedance. Input reflection bandwidth (VSWR=2:1) of the slots is 2GHz centered at 24GHz. The lens is made of plastic material with dielectric constant equal to that of quartz to avoid excitation of surface waves. A 5-element array of slots has been designed to demonstrate discrete beam scanning in the lens system. Beamwidth of around 10º and deflection pitch of 8-12º have been measured. The measured values are in good agreement with theoretical predictions.
[1] G.M.Rebeiz; “Millimeter-wave and terahertz integrated circuit antennas”; Proceedings of IEEE; 80(11); pp. 1748-1770; November 1992.
[2] D.F.Filipovic; S.S.Gearhart; G.M.Rebeiz; “Double-slot antennas on extended hemispherical and elliptical silicon dielectric lenses”; IEEE Trans. on Microwave Theory and Techniques; 41(10); pp. 1738-1749; October 1993.
[3] D.Chouvaev; Normal metal hot-electron microbolometer; Ph.D. thesis; Chalmers Univ. of Technology; Göteborg; Sweden; 2001.
[4] X.Wu; G.V.Eleftheriades; T.E.van Deventer-Perkins; “Design and characterization of singleand multiple-beam mm-wave circularly polarized substrate lens antennas for wireless communications”; IEEE Trans. on Microwave Theory and Techniques; 49(3); pp. 431-441; March 2001.
[5] D.F.Filipovic; G.P.Gauthier; S.Raman; G.M.Rebeiz; “Off-axis properties of silicon and quartz dielectric lens antennas”; IEEE Trans. on Antennas and Propagation; 45(5); pp. 760-766; May 1995.
[6] J.-F.Züricher; F.E.Gardiol; Broadband Patch Antennas; Artech House; 1995. ISBN 0-89006- 777-5.
[7] T.-F.Huang; S.-W.Lu; P.Hsu; “Analysis and design of coplanar waveguide-fed slot antenna array”; IEEE Trans. on Antennas and Propagation; 47(10); pp. 1560-1565; October 1999.
[8] C.A.Balanis; Antenna Theory: Analysis and Design; New York: Wiley; second edition; 1997.
