Communications: radio wave antennas – Antennas – High frequency type loops
Reexamination Certificate
2007-11-06
2007-11-06
Wimer, Michael C. (Department: 2821)
Communications: radio wave antennas
Antennas
High frequency type loops
Reexamination Certificate
active
11189689
ABSTRACT:
An energy density diversity antenna (EDA) has a least a pair of antenna elements, whose feeding points are connected to outputs of a hybrid coupler configured such that a sum and a difference signal may exist at the feed points of the antenna elements. First reactive elements are respectively inserted in the antenna elements proximal the respective feed points. The antenna elements are joined at a point distal from the feed points by a second reactive element, and a third reactive element is coupled between feed lines coupled to the feed points at a location between the feed points and the outputs of the hybrid coupler.
REFERENCES:
patent: 2372651 (1945-04-01), Capen et al.
patent: 4611212 (1986-09-01), Lee
patent: 4633519 (1986-12-01), Gotoh et al.
patent: 5392054 (1995-02-01), Bottomley et al.
patent: 5760747 (1998-06-01), McCoy et al.
patent: 5784032 (1998-07-01), Johnston et al.
patent: 5977916 (1999-11-01), Vannatta et al.
patent: 6104356 (2000-08-01), Hikuma et al.
patent: 6175334 (2001-01-01), Vannatta et al.
patent: 2002/0190908 (2002-12-01), Andrews et al.
patent: 0 108 816 (1982-10-01), None
W.C.Y. Lee, “Statistical Analysis of the Level Crossing and Duration of Fades of the Signal from an Energy Density Mobile Radio Antenna”, Bell System Technical Journal, vol. 46, Feb. 1967, pp. 416-440.
W.C.Y. Lee, “An Energy Density Antenna Model for Independent Measurement of the Electric and Magnetic Fields”, Bell System Technical Journal, vol. 46, Sep. 1967, pp. 1587-1599.
W.C.Y. Lee, Mobile Communications Engineering, McGraw—Hill Book Company, New York, 1982, pp. 159-163.
K. Fujimoto and J. R. James, Editors, Mobile Antenna Systems Handbook, Artech House, Boston, 1994, p. 85.
K. Fujimoto and J. R. James, Editors, Mobile Antenna Systems Handbook Second Edition, Artech House, Boston, 2001, pp. 407-417.
Efanov Andrew A.
Leininger Kristen M.
Phillips James P.
Chapa Lawrence J.
Motorola Inc.
Wimer Michael C.
LandOfFree
Energy diversity antenna and system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Energy diversity antenna and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy diversity antenna and system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3844791