Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2009-03-17
2011-12-27
Owens, Douglas W (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000, C343S846000, C343S909000
Reexamination Certificate
active
08085202
ABSTRACT:
A multiple input-multiple output antenna assembly with high isolation between the antennas is disclosed. The antenna assembly includes a substrate with a ground layer at its surface. Two antennas are disposed opposing each other on the substrate. An isolation element in a form of a patterned slot is interposed between the first and second antennas on the ground plane. A first signal port is provided for applying a first signal to excite the first antenna and a second signal port is provided for applying a second signal to excite the second antenna. The isolation element provides isolation that inhibits electromagnetic propagation between the two antennas.
REFERENCES:
patent: 5547100 (1996-08-01), Johnson
patent: 5633646 (1997-05-01), Strickland
patent: 5754143 (1998-05-01), Warnagiris et al.
patent: 6075493 (2000-06-01), Sugawara
patent: 6313798 (2001-11-01), Bancroft et al.
patent: 6593887 (2003-07-01), Luk et al.
patent: 6791498 (2004-09-01), Boyle et al.
patent: 6950071 (2005-09-01), Wen et al.
patent: 7023387 (2006-04-01), Wen et al.
patent: 7038627 (2006-05-01), Ikuta et al.
patent: 7283097 (2007-10-01), Wen et al.
patent: 7352327 (2008-04-01), Yeh et al.
patent: 7352328 (2008-04-01), Moon et al.
patent: 7369089 (2008-05-01), Wen et al.
patent: 7400300 (2008-07-01), Qi et al.
patent: 7403165 (2008-07-01), Qi et al.
patent: 7629930 (2009-12-01), Murch et al.
patent: 7701395 (2010-04-01), Alvey et al.
patent: 2004/0085245 (2004-05-01), Miyata et al.
patent: 2007/0001911 (2007-01-01), Fujio et al.
patent: 2007/0109204 (2007-05-01), Phillips et al.
patent: 2008/0062058 (2008-03-01), Bishop
patent: 2008/0231530 (2008-09-01), Rao et al.
patent: 2008/0284661 (2008-11-01), He
patent: 2008/0287171 (2008-11-01), Qi et al.
patent: 2009/0273529 (2009-11-01), Liu
patent: 1077505 (2001-02-01), None
patent: 1162688 (2001-12-01), None
patent: 20080167393 (2008-07-01), None
patent: 03058759 (2003-07-01), None
patent: 03096475 (2003-11-01), None
patent: 2004015810 (2004-02-01), None
patent: 2008001169 (2008-01-01), None
patent: 2008049354 (2008-05-01), None
patent: 2010036955 (2010-04-01), None
Examination Report for EP Application No. 10156819.4 dated Apr. 13, 2011.
Waldschmidt and Wiesbeck; Compact Wide-Band Multimode Antennas for MIMO and Diversity; IEEE Transactions on Antennas and Propagation; vol. 52, No. 8, Aug. 2004.
Svantesson; Correlation and Channel Capacity of MIMO Systems Employing Multimode Antennas; IEEE Transactions on Vehicular Technology, vol. 51, No. 6, Nov. 2002.
Forenza and Heath; Benefit of Pattern Diversity via Two-Element Array of Circular Patch Antennas in Indoor Clustered MIMO Channels; IEEE Transactions on Communications, vol. 54, No. 5, May 2006.
Vaughan; Two-Port Higher Mode Circular Microstrip Antennas; IEEE Transactions on Antennas and Propagation, vol. 36, No. 3, Mar. 1988.
European Search Report for Application No. 10167565.0, Sep. 30, 2010.
M. Karaboikis, et al.; Compact Dual-Printed Inverted-F Antenna Diversity Systems for Portable Wireless Devices; IEEE Antenna and Wireless Propagation Letters, vol. 3, pp. 9-14, 2004.
H.-T. Chou, et al.; Investigations of Isolation Improvement Techniques for Multiple Input Multiple Output (MIMO) WLAN Portable Terminal Applications; Progress in Electromagnetics Research; PIER 85, pp. 349-366, 2008.
Ki-Jin Kim, et al.; High Isolation Internal Dual-Band Planar Inverted-F Antenna Diversity System with Band-Notched Slots for MIMO Terminals; 36th European Microwave Conference; pp. 1414-1417; Sep. 10-15, 2006.
Hsieh, C.P., et al.; Band-stop Filter Design of Coplanar Stripline; Asia-Pacific Microwave Conference 2007; Dec. 11, 2007; IEEE; Piscataway, NJ, USA; pp. 1-4.
Qinjiang Rao, et al.; Compact Low Coupling Dual—Antennas for MIMO Applications in Handheld Devices; Antennas and Propagation Society International Symposium, Jun. 1, 2009; pp. 1-4.
Ki-Jin Kim, et al.; The High Isolation Dual-Band Inverted F Antenna Diversity System with the Small N-Section Resonators on the Ground Plane; Asia-Pacific Microwave Conference 2006; Dec. 1, 2006; pp. 195-198.
European Patent Office Search Report in Application 10156819.4-2220, corresponding to subject U.S. patent application.
Karaboikis, Soras, Tsachtsiris, Makios, Compact Dual-Printed Inverted-F Antenna Diversity Systems for Portable Wireless Devices, IEEE Antennas and Wireless Propagation Letters, vol. 3, pp. 9-14, 2004.
International Search Report and Written Opinion for Application No. PCT/CA20111050284, Aug. 3, 2011.
Ayatollahi Mina
Rao Qinjian
Wang Dong
Hamilton Gary W.
Hamilton & Terrile LLP
Owens Douglas W
Research In Motion Limited
Tran Chuc
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