Edward F Dziadek

6418327, Jul 9, 2002

Apr 6, 1999

09/287142

Douglas Carey - New York NY
Thomas Peragine - Nashua NH
Edward Dziadek - Mont Vernon NH
Naftali Herscovici - Framingham MA
Donna Ryan - Amherst NH

Spike Broadband Systems, Inc. - Nashua NH

H04Q 720

455562, 455422, 455446, 455453, 455561

Methods for determining an optimum sector distribution within a coverage area of a wireless communication system are disclosed. A coverage area is divided into a number of sectors, each sector having a respective sector width. The wireless communication system emits a respective radiation pattern designated for each sector. The methods of the invention evaluate the interference in a given sector due to both neighboring radiation pattern main lobes and sidelobes from all other sectors within the coverage area using the same frequency channels. According to the methods of the invention, a sector width and/or radiation pattern may be determined which minimizes the interference, or undesired signal level, while maintaining a sufficiently uniform distribution of the desired signal level in each sector. The various embodiments of methods according to the invention may be implemented using software, for example, in the form of a simulation program.

20020068612, Jun 6, 2002

Feb 9, 2001

09/780291

Douglas Carey - New York NY, US
Thomas Peragine - Nashua NH, US
Edward Dziadek - Mont Vernon NH, US
Naftali Herscovici - Framingham MA, US
Donna Ryan - Amherst NH, US

H04B001/38

455/562000, 455/422000, 455/446000

Wireless communication systems employing a sectored coverage area, and methods for determining a sector distribution within the coverage area. In one example, a wireless communication system emits radiation patterns in a sectored coverage area divided into at least two sectors. A first radiation pattern is designated substantially for a first sector, and one or more other radiation patterns are designated substantially for one or more other sectors. The sector distribution is based at least in part on a first desired signal level in the first sector due to the first radiation pattern and a first undesired interference level in the first sector due to the one or more other radiation patterns. In another example, the sector distribution is selected so as to maximize a ratio of the first desired signal level and the first undesired interference level. In another example, desired and undesired signal levels in other sectors are considered.

61695254, Jan 2, 2001

Sep 10, 1998

9/151036

Edward F. Dziadek - Mont Vernon NH
Douglas F. Carey - Nashua NH

Spike Technologies, Inc. - New York NY

H01Q 1508

343911R

A sectored antenna system has one or more dielectric lenses, each having a surface and two or more low profile antenna feed devices. At least one of the feed devices radiate signals into said lens that emerge as separate directional beams, and/or the lenses receive incoming signals from different directions and focus them onto different antenna feed devices. The feed devices of the sectored antenna system are low-profile broadband feed devices, such as log periodic dipole arrays or tapered notch antennas. Special design guidelines are given for their use with a lens. In addition, a method to reduce the cut off frequency of the tapered notch antenna is shown.

60467010, Apr 4, 2000

Nov 3, 1997

8/963039

Douglas F. Carey - Nashua NH
Edward F. Dziadek - Mont Vernon NH
Christopher M. Moritz - Manchester NH

Spike Technologies, Inc. - Nashua NH

H01Q 314
H01Q 1906

343753

A sectored antenna system has one or more dielectric lenses, each having a surface and two or more antenna feed devices tilted non-parallel to the lens surface and preferably angled in a V pattern. At least one of the feed devices radiate signals into said lens that emerge as separate directional beams, or the lenses receive incoming signals from different directions and focus them onto different antenna feed devices. The feed devices of the sectored antenna system have a dielectric constant of between about 5 and 15 and preferable about 10 and further has a mounting collar to mount the antenna feed devices about the lens to adjust for elevation, azimuth, radial and rotational orientation.