公开(公告)号：US10148002B2

公开(公告)日：2018-12-04

申请号：US15297008

申请日：2016-10-18

Applicant: Cisco Technology, Inc.

Inventor： Erin P. McGough ,  Daniel N. Johnson ,  Thomas G. Lutman ,  Fred J. Anderson

IPC: H01Q21/00 ,  H01Q1/24 ,  H01Q7/00 ,  H01Q21/24 ,  H01Q9/04 ,  H01Q21/28 ,  H01Q1/52 ,  H01Q21/30 ,  H01Q1/22

Abstract: The embodiments herein use polarization diversity between antennas where the antennas for one cell are, e.g., horizontally polarized and antennas for the other cell are vertically polarized. In one embodiment, the antennas for a macro cell are vertically polarized while micro cell antennas are horizontally polarized. In one example, the micro cell antennas are printed antennas that form a loop that is co-planar with the magnetic fields generated by the macro cell antennas when transmitting. Because the magnetic fields are co-planar (rather than orthogonal) to the current flowing through the loop in the micro cell antenna, the effect of the electromagnetic signals emitted by the macro cell antenna is reduced. This may permit dual radio network devices to have improved performance when operating simultaneously—e.g., when the macro cell radio is transmitting and the micro cell radio is receiving at or near the same frequency band.

公开(公告)号：US11380991B2

公开(公告)日：2022-07-05

申请号：US17302253

申请日：2021-04-28

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Danielle N. Bane ,  John M. Blosco ,  Paul J. Stager ,  Daniel N. Johnson ,  Timothy A. Frank ,  John M. Swartz

IPC: H01Q3/36 ,  H04B7/0413 ,  H04B7/06

Abstract: An electronically a steerable and switchable antenna array is provided that can produce a first beam with a first coverage range and a second beam with a second coverage range by selecting one of a first and a second beamwidth for both the first and second beams; in response to selecting the first beamwidth: switching signal inputs to narrow-beam antenna arrays; steering the first beam to one of a first positive, negative, or zero offset position; independently steering the second beam to one of a second positive, negative offset, or zero offset position; and transmitting signals received from the signal inputs via the first beam and the second beam; and in response to selecting the second beamwidth: switching signal inputs to wide-beam antenna arrays; and transmitting signals received from the signal inputs via the first beam and the second beam.

公开(公告)号：US12009604B2

公开(公告)日：2024-06-11

申请号：US17813679

申请日：2022-07-20

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Jonathan M. Cyphert ,  John M. Swartz ,  Daniel N. Johnson ,  Danielle N. Bane

IPC: H01Q3/34 ,  H01Q1/22 ,  H01Q15/02

CPC classification number: H01Q3/34 ,  H01Q1/22 ,  H01Q15/02

Abstract: Embodiments herein describe mounting one or more lasers onto an AP to generate a laser pattern on a surface representing the coverage area of an antenna in the AP. In one embodiment, the antenna is a steerable antenna that can be electronically or mechanical steered to point to different directions (without moving the AP as a whole). The laser or lasers can be used to visualize the coverage area of the steerable antenna when pointing in different directions. Advantageously, a technician can use the laser or lasers to identify a location where, if steered, the antenna would provide the desired coverage area. The technician can then steer the antenna to point in that direction to provide the desired radio frequency (RF) coverage.

公开(公告)号：US11024961B2

公开(公告)日：2021-06-01

申请号：US16875655

申请日：2020-05-15

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Danielle N. Bane ,  John M. Blosco ,  Paul J. Stager ,  Daniel N. Johnson ,  Timothy A. Frank ,  John M. Swartz

IPC: H04B7/0413 ,  H01Q3/36 ,  H04B7/06

Abstract: An electronically a steerable and switchable antenna array is provided that can produce a first beam with a first coverage range and a second beam with a second coverage range by selecting one of a first and a second beamwidth for both the first and second beams; in response to selecting the first beamwidth: switching signal inputs to narrow-beam antenna arrays; steering the first beam to one of a first positive, negative, or zero offset position; independently steering the second beam to one of a second positive, negative offset, or zero offset position; and transmitting signals received from the signal inputs via the first beam and the second beam; and in response to selecting the second beamwidth: switching signal inputs to wide-beam antenna arrays; and transmitting signals received from the signal inputs via the first beam and the second beam.