Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2001-01-16
2009-08-18
Lee, John J (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S562100, C455S276100, C455S024000
Reexamination Certificate
active
07577398
ABSTRACT:
A flat-panel repeater includes a housing having a pair of oppositely facing surfaces, at least one antenna element mounted to each of the surfaces for radiating energy in a direction opposite to that of an antenna element mounted to the other of the surfaces, and an electronic circuit mounted within the housing and operatively coupling signals between at least one antenna element on each of the oppositely facing surfaces of the module. Isolation between the antennas on opposite sides of the repeater is improved by various techniques, such as use of adaptive cancellation which removes a significant portion of the feedback signal power, therefore increasing the total system isolation by the same amount. This additional isolation can be used to achieve greater system gain, and therefore significantly extend the range of the system. The repeater may also include a beamforming arrangement for creating a desired antenna pattern of one antenna relative to a base station and a desired antenna pattern of the other antenna relative to subscriber equipment.
REFERENCES:
patent: 4475246 (1984-10-01), Batlivala et al.
patent: 5093923 (1992-03-01), Leslie
patent: 5267297 (1993-11-01), Kawano et al.
patent: 5349694 (1994-09-01), Kawano et al.
patent: 5610617 (1997-03-01), Gans et al.
patent: 5652578 (1997-07-01), Snow
patent: 5832365 (1998-11-01), Chen et al.
patent: 5835848 (1998-11-01), Bi et al.
patent: 5848054 (1998-12-01), Mosebrook
patent: 5880695 (1999-03-01), Brown
patent: 5937332 (1999-08-01), Karabinis
patent: 5987304 (1999-11-01), Latt
patent: 6009324 (1999-12-01), Pravitz et al.
patent: 6128471 (2000-10-01), Quelch et al.
patent: 2003/0104781 (2003-06-01), Son
patent: 0 605 182 (1994-06-01), None
patent: 2000-183797 (2000-06-01), None
patent: WO 98/39851 (1998-09-01), None
Alford James L.
Judd Mano D.
Kuiper William P.
Lovinggood Breck W.
Maca Gregory A.
Andrew LLC
Lee John J
Wood Herron & Evans LLP
LandOfFree
Repeaters for wireless communication systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Repeaters for wireless communication systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Repeaters for wireless communication systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4091340