Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-03-01
2005-03-01
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S846000
Reexamination Certificate
active
06861988
ABSTRACT:
An improved patch antenna for operation in at least two frequency bands is distinguished by the following features:having a reflector (1),at least two patch antenna element arrangements (5, 7) are provided, constructed on the reflector (1) and/or arranged in front of the reflector (1), namely a patch antenna element arrangement (5) for a lower frequency band and a patch antenna element arrangement (7) for a higher frequency band,the patch antenna element arrangements (5, 7) for the lower frequency band and for the higher frequency band each have at least one active feed patch (5a, 7a) with an associated slot structure (11, 13) and a passive cover patch (5b, 7b), which is arranged above it and is capacitively coupled,the patch antenna element arrangements (5, 7) for the lower frequency band and for the higher frequency band located on a base plate,the top cover patch (5b) of the lower patch antenna element arrangement (5) for the lower frequency band in this case at the same time forms the base plate for a patch antenna element arrangement (7), which is constructed on it, for the higher frequency band,a slot arrangement which has an H-shaped slot structure (11, 13) is formed in at least one feed patch (5a, 7a), andthe at least two slot structures (11, 13) in the respective feed patch (5a, 7a) are fed via a respectively associated feed cable arrangement (15a, 15b).
REFERENCES:
patent: 5323168 (1994-06-01), Itoh et al.
patent: 5448250 (1995-09-01), Day
patent: 5661493 (1997-08-01), Uher et al.
patent: 6018320 (2000-01-01), Jidhage et al.
patent: 6054953 (2000-04-01), Lindmark
patent: 6087990 (2000-07-01), Thill et al.
patent: 6198439 (2001-03-01), Dufrane et al.
patent: 6211824 (2001-04-01), Holden et al.
patent: 6351239 (2002-02-01), Mizuno et al.
patent: 6639558 (2003-10-01), Kellerman et al.
patent: 0 433 255 (1991-06-01), None
patent: 0 521 384 (1993-01-01), None
patent: 0 740 361 (1996-10-01), None
patent: 0 999 608 (2000-05-01), None
patent: 1 069 646 (2001-01-01), None
patent: 9959223 (1999-11-01), None
patent: 0013260 (2000-03-01), None
Song et al; “Ku-Band 16×16 Planar Array with Aperture-Coupled Microstrip-Patch Elements”; IEEE Antennas and Propagation Magazine, vol. 40, No. 5, Oct. 1998, pp. 25-29.
Lindmark; “A Dual Polarized Dual Band Microstrip Antenna for Wireless Communications”; Allgon System AB, Aerospace Conference, Mar. 21-28, 1998 IEEE, vol. 3, pp. 333-338.
Pischke et al; “Supraleitende Miniaturisierte Planarantennen”; Radio Fernsehen Elektronik, VEB Verlag Technik. Berlin, DE, vol. 41, No. 2, 1992, pp. 101-104, XP000288670.
Rahti, V. et al; “Improved Coupling for Aperture Coupled Microstrip Antennas”; IEEE Transactions on Antennas and Propagation, vol. 44, No. 8, Aug. 1996, pp. 1196-1198.
Sainati, Robert A., “CAD of Microstrip Antennas for Wireless Applications,” pp. 150-159.
Gabriel Roland
Schultheiss Carsten
Ho Tan
Kathrein-Werke KG
Nixon & Vanderhye P.C.
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