公开(公告)号：US08791849B1

公开(公告)日：2014-07-29

申请号：US13827892

申请日：2013-03-14

Applicant: Raytheon Company

Inventor： Harry B. Marr ,  Ralston S. Robertson ,  Ronak D. Shah

IPC: H03M1/66

CPC classification number: H03M1/66

Abstract: A system for converting a digital signal to an analog signal, the digital signal having a center frequency, includes: a multi-Nyquist DAC; a clock; and a controller configured to: control the clock to generate a clock signal such that the center frequency of the digital signal is an integer multiple of half the frequency of the clock signal, the clock being configured to supply the clock signal to the multi-Nyquist DAC and to the controller; and supply the digital signal to the multi-Nyquist DAC to generate an output signal.

Abstract translation: 一种用于将数字信号转换为模拟信号的系统，具有中心频率的数字信号包括：多奈奎斯特DAC; 一个钟; 以及控制器，其被配置为：控制所述时钟以产生时钟信号，使得所述数字信号的中心频率是所述时钟信号的频率的一半的整数倍，所述时钟被配置为将所述时钟信号提供给所述多奈奎斯特 DAC和控制器; 并将数字信号提供给多奈奎斯特DAC以产生输出信号。

公开(公告)号：US20190356058A1

公开(公告)日：2019-11-21

申请号：US16415292

申请日：2019-05-17

Applicant: Raytheon Company

Inventor： Larry C. Martin ,  Robert S. Isom ,  Ralston S. Robertson

IPC: H01Q21/06 ,  H01Q21/24 ,  H01Q1/38

Abstract: Described is a radio frequency (RF) array antenna element provided from a multi-layer printed circuit board (PCB) having disposed thereon a plurality of dual-polarized antenna elements with each of the dual-polarized antenna elements disposed to define a segmentation cut plane therebetween to enable size modification and modular construction of the RF array antenna.

公开(公告)号：US10374675B1

公开(公告)日：2019-08-06

申请号：US15913835

申请日：2018-03-06

Applicant: RAYTHEON COMPANY

Inventor： Harry B. Marr ,  Daniel Thompson ,  Ralston S. Robertson

IPC: H04L27/00 ,  H04B7/06

Abstract: A system for beamforming, in a phased array antenna. Subtraction of a sinusoidal signal from a received signal, or from a signal to be transmitted, is used to shift the phase of the received signal, or from a signal to be transmitted. A separate sinusoidal signal may be generated for each antenna array element, making it possible to shift the phase on a per-element basis, to perform beamforming.