公开(公告)号：US09906245B2

公开(公告)日：2018-02-27

申请号：US14854415

申请日：2015-09-15

Applicant: RAYTHEON COMPANY

Inventor： Kenneth W. Brown ,  Michael J. Sotelo ,  April R. Sanders

IPC: H04B1/00 ,  H04B1/10 ,  H04B7/06 ,  H04B7/08 ,  H04B7/12 ,  H04L25/02

CPC classification number: H04B1/0057 ,  H04B1/10 ,  H04B7/0617 ,  H04B7/0671 ,  H04B7/068 ,  H04B7/0697 ,  H04B7/0894 ,  H04B7/12 ,  H04L25/0262

Abstract: A communications system having two terminals, each including two antennas, the communications system using spatial multiplexing. One antenna of a first terminal transmits a tracking tone along with a data signal. Two antennas in a second terminal receive the tracking tone. The signals from the two antennas are processed by a feed circuit. The feed circuit includes a variable delay circuit and a combiner that forms, at a first difference output, a linear combination, of a signal from the first antenna and a signal from the second antenna, in which the tracking tone is canceled. The variable delay circuit is actively adjusted to maintain this cancellation.

公开(公告)号：US20170077965A1

公开(公告)日：2017-03-16

申请号：US14854415

申请日：2015-09-15

Applicant: RAYTHEON COMPANY

Inventor： Kenneth W. Brown ,  Michael J. Sotelo ,  April R. Sanders

IPC: H04B1/00

CPC classification number: H04B1/0057 ,  H04B1/10 ,  H04B7/0617 ,  H04B7/0671 ,  H04B7/068 ,  H04B7/0697 ,  H04B7/0894 ,  H04B7/12 ,  H04L25/0262

Abstract: A communications system having two terminals, each including two antennas, the communications system using spatial multiplexing. One antenna of a first terminal transmits a tracking tone along with a data signal. Two antennas in a second terminal receive the tracking tone. The signals from the two antennas are processed by a feed circuit. The feed circuit includes a variable delay circuit and a combiner that forms, at a first difference output, a linear combination, of a signal from the first antenna and a signal from the second antenna, in which the tracking tone is canceled. The variable delay circuit is actively adjusted to maintain this cancellation.

Abstract translation: 一种具有两个终端的通信系统，每个终端包括两个天线，所述通信系统使用空间复用。 第一终端的一个天线与数据信号一起发送跟踪音。 第二个终端中的两个天线接收跟踪音。 来自两个天线的信号由馈电电路处理。 馈电电路包括可变延迟电路和组合器，其在第一差分输出处形成来自第一天线的信号和来自第二天线的信号，其中跟踪音被取消。 主动调节可变延迟电路以维持该取消。