公开(公告)号：DE602005024584D1

公开(公告)日：2010-12-16

申请号：DE602005024584

申请日：2005-09-19

Applicant: CISCO TECH INC

Inventor： CONDON EDWARD B ,  SMITH RICHARD L ,  GRABNER JOHN

IPC: H01Q1/38 ,  H01Q1/02 ,  H01Q1/22 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q21/28 ,  H01Q25/00

公开(公告)号：AT487248T

公开(公告)日：2010-11-15

申请号：AT05798083

申请日：2005-09-19

Applicant: CISCO TECH INC

Inventor： CONDON EDWARD ,  SMITH RICHARD ,  GRABNER JOHN

IPC: H01Q1/38 ,  H01Q1/02 ,  H01Q1/22 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q21/28 ,  H01Q25/00

Abstract: A system and method improves linearly-polarized microstrip patch antenna performance and fabrication through the incorporation of a pin fin ground plane and an integral antenna feed assembly. In one embodiment, a patch antenna system includes an antenna area with a patch antenna that provides radio communications. A heat dissipation member is coupled to the antenna area and includes a plurality of pins that provide for both the dissipation of heat from the antenna area and a ground plane for the antenna area. An antenna feed line is further coupled with the antenna patch for providing an electrical connection from the antenna patch to other electronic circuitries, such as a wireless device that may be mechanically coupled to the heat dissipation member. Heat generated during the operation of the wireless device is directed to ambient air by way of the heat dissipation member.

公开(公告)号：DE602005023030D1

公开(公告)日：2010-09-30

申请号：DE602005023030

申请日：2005-08-29

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN

IPC: G01S7/40 ,  H01Q3/22 ,  H04B17/00

公开(公告)号：AT532271T

公开(公告)日：2011-11-15

申请号：AT05798668

申请日：2005-09-08

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL

IPC: H04B1/06 ,  H04B7/00

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.

公开(公告)号：AT478351T

公开(公告)日：2010-09-15

申请号：AT05792495

申请日：2005-08-29

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN

IPC: G01S7/40 ,  H01Q3/22 ,  H04B17/00

Abstract: A smart antenna calibration system is disclosed for calibrating an antenna array having a plurality of antennas. Each antenna has a calibration coupler for providing a monitoring signal indicative of a signal passing through a transceiver associated thereof, and a processing unit including at least one signal splitter that splits at least one monitoring signal and a combiner array comprising one or more combiners for combining at least two split monitoring signals from first and second antennas to produce a first combined signal representing an in-phase sum and a second combined signal representing a quadrature sum. A power detector is in communication with the processing unit, which is configured to estimate a power level of the signal passing each of the first and second antennas and the in-phase power and quadrature power of the in-phase and quadrature sums for determining a phase difference of the signal on the antennas.

公开(公告)号：WO2008130922A3

公开(公告)日：2009-02-26

申请号：PCT/US2008060335

申请日：2008-04-15

Applicant: CISCO TECH INC ,  JIN HANG ,  GRABNER JOHN ,  GUO LI ,  LIU QINGWEN

Inventor： JIN HANG ,  GRABNER JOHN ,  GUO LI ,  LIU QINGWEN

IPC: H04W16/28 ,  H04W48/12 ,  H04W72/00

CPC classification number: H04W16/28 ,  H04W48/12 ,  H04W72/048

Abstract: A hybrid time-spatial multiplexing technique is provided for beamforming broadcast messages to mobile stations (20) that may be within a coverage region or cell (30) of a base station (10). The coverage region is divided into a plurality of plurality of segments (40-46). The mobile stations are assigned to at least one of the segments based on their locations within the coverage region or other criteria. The base station computes beamforming antenna weights which are configured to produce a radiation beam pattern (50-56) from a plurality of antennas (12) of the base station to respective ones of each of the plurality of segments in the region. A broadcast message is transmitted to each segment of the region in a time-division multiplexed manner using the beamforming antenna weights associated with the radiation beam pattern for the corresponding segment.

Abstract translation: 提供了混合时空复用技术，用于向可能在基站（10）的覆盖区域或小区（30）内的移动台（20）的波束形成广播消息。 覆盖区域被分成多个段（40-46）。 基于其在覆盖区域内的位置或其他标准，移动站被分配给至少一个段。 基站计算波束成形天线权重，其被配置为产生从该基站的多个天线（12）到该区域中的多个段中的每一个的相应的一个的辐射束图案（50-56）。 使用与用于相应段的辐射束图案相关联的波束成形天线权重，以时分复用方式将广播消息发送到该区域的每个段。

公开(公告)号：EP1920499A4

公开(公告)日：2010-12-15

申请号：EP06734782

申请日：2006-02-09

Applicant: CISCO TECH INC

Inventor： GRABNER JOHN ,  SMITH RICHARD ,  CONDON ED

IPC: H01Q1/38 ,  H01P3/08

CPC classification number: H01Q9/0407 ,  H01P3/084 ,  H01Q1/38

公开(公告)号：EP2020143A4

公开(公告)日：2013-03-27

申请号：EP07750974

申请日：2007-02-13

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN

IPC: H04W16/28

CPC classification number: H04W16/28

公开(公告)号：EP1787398A4

公开(公告)日：2009-06-03

申请号：EP05798668

申请日：2005-09-08

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL WEE TECK

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.

公开(公告)号：EP1958358A4

公开(公告)日：2013-04-03

申请号：EP06836942

申请日：2006-11-04

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  HEDAYAT AHMADREZA ,  GRABNER JOHN

IPC: H04M1/00 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0619 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0691

Abstract: The present invention discloses a method and system for signal communication in a multi-input multi-output network. The method creates beamformed channels by calculating one or more beamforming weighting vectors corresponding to one or more antennas on the receiving wireless station based on the predetermined receiving signals. The transmitting wireless station transmits one or more beamformed transmission signals to the receiving wireless station using the calculated beamforming weighting vectors for targeting at the antennas thereon, thereby creating two or more detectably uncorrelated transmission signals received at the receiving wireless station.