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1. 发明申请

US20230060548A1 MODULAR CHANNELIZER 有权
公开(公告)号：US20230060548A1
公开(公告)日：2023-03-02
申请号：US17890701
申请日：2022-08-18
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Oliver Labrèche , Michel Thériault , Pierre Talbot
IPC分类号： H04B7/204 , H04J4/00 , H04B7/185
摘要： An example of a channelizer includes a plurality of receiver circuits, an individual receiver circuit including a frequency demultiplexer that is configured to demultiplex a plurality of subchannels and a time-division demultiplexer coupled to the frequency demultiplexer, the time-division demultiplexer configured to time-division demultiplex the plurality of subchannels to provide a plurality of time-division outputs, an individual time-division output including portions of data from each of the plurality of subchannels; and a plurality of switch circuits, each configured to receive a different time-division output of the plurality of time-division outputs from the individual receiver.

2. 发明申请

US20220376403A1 DIRECT RADIATING ARRAY ASSEMBLY OF AN ANTENNA 有权
公开(公告)号：US20220376403A1
公开(公告)日：2022-11-24
申请号：US17765331
申请日：2020-09-30
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Guillaume Deuchst , Benjamin Huneault , Billy Marquez , Yann Van der Bruggen , Stephen Wilson
IPC分类号： H01Q21/00 , H01Q1/02 , H01Q1/28
摘要： Increasing demand for communications systems for facilitating communications such as communications satellites leads to continuously increasing frequency bands of the signal for communication and the quantity of beams carrying the signals may make it more and more difficult to have a significant number of mechanical and electrical components concentrated in a location in proximity to the array while maintaining antenna efficiency. Provided is a direct radiating array (“DRA”) antenna for transmitting or receiving an electromagnetic radio frequency (“RF”) signal of at least one predetermined signal frequency band and a method of assembly that overcomes at least some of the disadvantages of existing direct radiating array systems and methods. The DRA antenna comprising a plurality of radiating elements, a plurality of RF signal chain paths and a beamforming network board having a plurality of electrical ports for electrically connecting to the plurality of RF signal chain paths.

3. 发明申请

US20190109636A1 MODULAR CHANNELIZER 审中-公开
公开(公告)号：US20190109636A1
公开(公告)日：2019-04-11
申请号：US15729257
申请日：2017-10-10
申请人： MACDONALD, DETTWILER AND ASSOCIATES CORPORATION
发明人： Oliver Labrèche , Michel Thériault , Pierre Talbot
IPC分类号： H04B7/204 , H04J4/00
摘要： An example of a channelizer includes a plurality of receiver circuits, an individual receiver circuit including a frequency demultiplexer that is configured to demultiplex a plurality of subchannels and a time-division demultiplexer coupled to the frequency demultiplexer, the time-division demultiplexer configured to time-division demultiplex the plurality of subchannels to provide a plurality of time-division outputs, an individual time-division output including portions of data from each of the plurality of subchannels; and a plurality of switch circuits, each configured to receive a different time-division output of the plurality of time-division outputs from the individual receiver.

4. 发明授权

US10069184B2 Compact and lightweight TEM-line network for RF components of antenna systems 有权
公开(公告)号：US10069184B2
公开(公告)日：2018-09-04
申请号：US15418154
申请日：2017-01-27
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Jaroslaw Uher , Stéphane Lamoureux , Sylvain Richard
IPC分类号： H01P5/12 , H01P5/19 , H01P1/202 , H01P3/02 , H01P3/06
摘要： A TEM-line network architecture for RF components used in antenna system, includes an electrically conductive main body forming an outer conductor defining a signal channel, and an electrically conductive center conductor electrically grounded to the main body at predetermined locations. The center conductor is electromagnetically isolated from the outer conductor at RF frequencies while being connected and supported within the signal channel only at at least one of the predetermined locations. The outer conductor is preferably formed of three layers with the center conductor being integral with one of the layers.

5. 发明申请

US20130342282A1 ORTHOMODE JUNCTION ASSEMBLY WITH ASSOCIATED FILTERS FOR USE IN AN ANTENNA FEED SYSTEM 有权
标题翻译：具有相关过滤器的正交连接组件，用于天线进料系统
公开(公告)号：US20130342282A1
公开(公告)日：2013-12-26
申请号：US13974640
申请日：2013-08-23
申请人： Macdonald, Dettwiler and Associates Corporation
发明人： Jaroslaw UHER
IPC分类号： H01P1/165
CPC分类号： H03H7/461 , H01P1/161 , H01P1/2131
摘要： An advanced reverse orthomode junction feed assembly with associated filters for use in an antenna feed system for transmitting a first low frequency (LF) electromagnetic signal and receiving a second high frequency (HF) electromagnetic signal. The assembly includes, in a preferred square waveguide topology, an orthomode junction with an antenna port for connecting to a choking iris matching section and an antenna feed, an opposed generally coaxial first signal port to transmit the LF signal, and a generally perpendicular second signal port, located there between, to receive the HF signal. A first signal channel having fully asymmetric on-axis second signal reject filters connects to the first port; and a second signal channel having cross-axis first signal reject filters with multi-cavity HF path matching assembly connects to the second port. The use of a magic-tee as a combiner for the receive signal provides tracking capability to the antenna feed system.
摘要翻译：一种用于天线馈送系统的相关滤波器的先进的反向正交模馈通组件，用于传输第一低频（LF）电磁信号和接收第二高频（HF）电磁信号。该组件在优选的正方形波导拓扑中包括具有用于连接到阻塞虹膜匹配部分和天线馈送的天线端口的正交模式结，用于传输LF信号的相对的大体上同轴的第一信号端口以及大致垂直的第二信号端口，位于其间，接收HF信号。具有完全非对称的轴上第二信号抑制滤波器的第一信号通道连接到第一端口; 并且具有具有多空腔HF路径匹配组件的跨轴第一信号滤波器的第二信号通道连接到第二端口。使用魔术三通作为接收信号的组合器可为天线馈电系统提供跟踪功能。

6. 发明申请

US20230006754A1 SYSTEM AND METHOD FOR REMOTELY CALIBRATING A PHASED ARRAY ANTENNA 有权
公开(公告)号：US20230006754A1
公开(公告)日：2023-01-05
申请号：US17784457
申请日：2020-12-10
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Michel Bellemare , Saeed Daneshmand , Guillaume Lamontagne
IPC分类号： H04J13/00 , H01Q3/26 , H04B1/707 , H04B17/12
摘要： Systems and methods for calibrating a phase array antenna (“PAA”) are provided. The system includes a PAA having a plurality of array elements and a remote calibration terminal. The PAA is connected to a processor unit. The PAA includes a reference beamforming network (“BFN”) for generating a reference beam and a calibration BFN for generating a calibration beam. The PAA applies a plurality of scrambled orthogonal codes to the calibration BFN to generate the calibration beam. The remote calibration terminal is configured to analyze the reference beam and the calibration beam to determine a calibration error for the PAA, the calibration error including a phase error and an amplitude error for each of the plurality of array elements of the PAA. The remote calibration terminal may be configured to measure a beam pointing error (“BPE”) of the PAA and/or a coupling between array elements.

7. 发明授权

US11424822B2 Modular channelizer 有权
公开(公告)号：US11424822B2
公开(公告)日：2022-08-23
申请号：US17084066
申请日：2020-10-29
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Oliver Labrèche , Michel Thériault , Pierre Talbot
IPC分类号： H04B7/204 , H04J4/00 , H04B7/185
摘要： An example of a channelizer includes a plurality of receiver circuits, an individual receiver circuit including a frequency demultiplexer that is configured to demultiplex a plurality of subchannels and a time-division demultiplexer coupled to the frequency demultiplexer, the time-division demultiplexer configured to time-division demultiplex the plurality of subchannels to provide a plurality of time-division outputs, an individual time-division output including portions of data from each of the plurality of subchannels; and a plurality of switch circuits, each configured to receive a different time-division output of the plurality of time-division outputs from the individual receiver.

8. 发明申请

US20200379123A1 HIGH-POWER FLEXIBLE-POLARIZATION IN-ORBIT-CALIBRATION SATELLITE PAYLOAD 审中-公开
公开(公告)号：US20200379123A1
公开(公告)日：2020-12-03
申请号：US16887012
申请日：2020-05-29
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Haiqing WU , Jean-François BLAIN , Claude GINGRAS , Michel TREMBLAY
IPC分类号： G01S19/23 , H04B7/204 , H04B7/185
摘要： A system of architecture, apparatus and calibration method is invented for high-power flexible-polarization payload for satellite communications. The system comprises onboard phase-tracked apparatus, flexible polarization mechanism, and in-orbit calibration method. The power combining and polarization performance of the phase-tracked payload is monitored on ground by measuring the cross-polarization discrimination (XPD) and/or axial ratio (AR). The high performance over the life is achieved by optimization of the XPD or AR on ground and adjusting complex gain of the transponders. The high-power flexible-polarization in-orbit-calibration payload may be applied but not limited to UHF, L, S, C, X, Ku and Ka-band high power satellite systems.

9. 发明授权

US10855366B2 Modular channelizer 有权
公开(公告)号：US10855366B2
公开(公告)日：2020-12-01
申请号：US15729257
申请日：2017-10-10
申请人： MACDONALD, DETTWILER AND ASSOCIATES CORPORATION
发明人： Oliver Labrèche , Michel Thériault , Pierre Talbot
IPC分类号： H04B7/204 , H04J4/00 , H04B7/185
摘要： An example of a channelizer includes a plurality of receiver circuits, an individual receiver circuit including a frequency demultiplexer that is configured to demultiplex a plurality of subchannels and a time-division demultiplexer coupled to the frequency demultiplexer, the time-division demultiplexer configured to time-division demultiplex the plurality of subchannels to provide a plurality of time-division outputs, an individual time-division output including portions of data from each of the plurality of subchannels; and a plurality of switch circuits, each configured to receive a different time-division output of the plurality of time-division outputs from the individual receiver.

10. 发明授权

US10447219B2 Calibration system and method for optimizing leakage performance of a multi-port amplifier 有权
公开(公告)号：US10447219B2
公开(公告)日：2019-10-15
申请号：US15853588
申请日：2017-12-22
申请人： MacDonald, Dettwiler and Associates Corporation
发明人： Haiqing Wu , Steve Hatzigeorgiou , Michel Tremblay , Brent Stoute
IPC分类号： H03F3/68 , H03F3/193 , H03F3/21 , H03F1/02 , H03F1/32 , H04B7/185 , H03F3/189
摘要： A calibration system of architecture, apparatus, algorithms and method for optimizing leakage performance of a multi-port amplifier (MPA) for satellite communications. The calibration system comprises simple onboard apparatus and generally on-ground algorithms implementation connected via telecommand and telemetry links. The isolation performance of the MPA is monitored by using a commandable frequency generator and a flexible narrowband receiver. The high performance is achieved by direct and efficient optimization of the aggregate leakage of the MPA. The calibration system may be applied but not limited to Ku and Ka-band high throughput satellite systems.

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