公开(公告)号：US09762325B2

公开(公告)日：2017-09-12

申请号：US14651894

申请日：2013-12-13

Applicant: BAE SYSTEMS plc

Inventor： David John Aitken ,  Simon Charles Giles ,  Robert John Mark Longstone ,  Mohammed Nawaz ,  Andrew James Smith ,  Michael Andrew Scott

IPC: H04B10/00 ,  H04B10/2575 ,  G02B6/36 ,  H01Q3/26 ,  H04B10/80 ,  H04B10/516

CPC classification number: H04B10/25752 ,  G02B6/3604 ,  H01Q3/2676 ,  H04B10/516 ,  H04B10/801

Abstract: An optical signal transmission apparatus (1) for a rotating antenna comprising a plurality of optical modulators (6) arranged for receiving a respective plurality of analog RF signals (5) and for modulating a respective plurality of optical signals therewith to produce a plurality of modulated analog optical signals (8). A plurality of opto-electrical converters (14) each converts a respective modulated analog optical signal (13) into an analog electrical signal. The plurality of optical modulators (6) are rotationally coupled in optical communication with the plurality of opto-electrical converters (14) via an optical rotary joint (10) including a reversion prism.

公开(公告)号：US09627776B2

公开(公告)日：2017-04-18

申请号：US14651892

申请日：2013-12-11

Applicant: BAE SYSTEMS plc

Inventor： Alan James Keith Laight ,  Jonathan James Stafford ,  Gavin Roy Crouch ,  Michael Andrew Scott ,  Paul David Gilliam

IPC: H01Q21/00 ,  H01Q1/02

CPC classification number: H01Q21/0075 ,  H01Q1/02 ,  H01Q21/0087 ,  Y10T29/49018

Abstract: An antenna sub-array for use in an antenna array having a plurality of such sub-arrays includes a stripline for signal distribution, the stripline defining a plurality of signal pathways from a common feed point to a plurality of radiating elements, wherein the stripline is housed in a first support structure located a distance away from a first surface of a ground plane structure.

公开(公告)号：US09473183B2

公开(公告)日：2016-10-18

申请号：US14651901

申请日：2013-12-11

Applicant: BAE SYSTEMS plc

Inventor： Marcus Edward Clark ,  Michael Andrew Scott ,  James Eade

IPC: H04W24/00 ,  H04B1/10 ,  H01Q3/26 ,  H04B17/21 ,  H04B1/18

CPC classification number: H04B1/1027 ,  H01Q3/267 ,  H01Q3/2676 ,  H04B1/18 ,  H04B17/21

Abstract: A method for calibrating an antenna system (1) including a antenna elements (3) connected to signal receiver units (4) at an RF signal input port thereof comprising, generating an RF calibration signal (62), applying the RF calibration signal to the RF signal input port of the signal receiver units without applying the calibration signal via the antenna elements (3). The response of the antenna system to the calibration signal is measured, and a signal correction is calculated according to the measured response. The signal correction is applied to the response of the antenna system to signals subsequently received at the signal receiver units via the antenna elements of the antenna system.

Abstract translation: 一种用于校准包括在RF信号输入端口处连接到信号接收器单元（4）的天线元件（3）的天线系统（1）的方法，包括：产生RF校准信号（62），将RF校准信号施加到 RF信号输入端口，而不经由天线元件（3）施加校准信号。 测量天线系统对校准信号的响应，并根据测量的响应计算信号校正。 信号校正被应用于天线系统经由天线系统的天线元件随后在信号接收器单元处接收到的信号的响应。