JP2016529822A - 衛星信号伝送システムにおける予歪み - Google Patents
衛星信号伝送システムにおける予歪み Download PDFInfo
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- JP2016529822A JP2016529822A JP2016532736A JP2016532736A JP2016529822A JP 2016529822 A JP2016529822 A JP 2016529822A JP 2016532736 A JP2016532736 A JP 2016532736A JP 2016532736 A JP2016532736 A JP 2016532736A JP 2016529822 A JP2016529822 A JP 2016529822A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0222—Continuous control by using a signal derived from the input signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3215—To increase the output power or efficiency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3227—Adaptive predistortion based on amplitude, envelope or power level feedback from the output of the main amplifier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
図7:10MHzのLTE DL(QPSK)
図8:32MHzの1024−QAM
図9:50MHzの1024−QAM
Claims (14)
- 衛星用信号伝送システムであって、
送信されるべき信号を作成するための手段と、
前記信号に予歪みを加えるためのデジタル予歪みデバイスを含む第1の信号チャネルと、
前記信号のエンベロープを処理するための第2の信号チャネルであって、前記信号の前記エンベロープに予歪みを加えるための第2のデジタル予歪みデバイスを含む第2の信号チャネルと、
前記信号を送信するための出力手段と
を備えた信号伝送システム。 - 前記第2のチャネルは、前記第1のチャネルに並列に接続される請求項1に記載の信号伝送システム。
- 前記第1のチャネルは、ドライバ増幅器および電力増幅器を含む請求項1又は請求項2に記載の信号伝送システム。
- 前記電力増幅器は、低電力出力が要求されるとき、オフに切替え可能である請求項3に記載の信号伝送システム。
- 前記第2のチャネルは、エンベロープ増幅器を含み、前記エンベロープ増幅器の出力は、前記ドライバ増幅器に接続され、前記ドライバ増幅器に対する電源を制御する請求項2に記載の信号伝送システム。
- 前記出力手段は、アンテナを含む請求項1から請求項5のいずれか1項に記載の信号伝送システム。
- 前記出力手段によって電源を変調するための手段を更に備えた請求項1から請求項6のいずれか1項に記載の信号伝送システム。
- 前記アンテナにおける負荷を変調するための整合回路網を更に備えた請求項6又は請求項7に記載の信号伝送システム。
- 前記整合回路網は、1つ又は複数のバラクタを含む請求項8に記載の信号伝送システム。
- 送信されるべき信号を作成するステップと、
前記信号に第1の予歪みを加え、前記予歪みを受けた信号を第1の増幅器を使用して増幅するステップと、
前記信号の帯域制限されたエンベロープを分離し、前記エンベロープに第2の予歪みを加えるステップと、
前記歪みを受けたエンベロープ信号を使用して、前記第1の増幅器を制御するステップと、
アンテナを使用して、前記第1の増幅器から出力を送信するステップと
を含む信号を送信する方法。 - 前記エンベロープ信号は、エンベロープ増幅器を使用して増幅される請求項10に記載の信号を送信する方法。
- システムの出力負荷を変調することをさらに含む請求項10又は請求項11に記載の信号を送信する方法。
- 添付の図面を参照して、本文書に実質的に記載された信号伝送システム。
- 添付の図面を参照して、本文書に実質的に記載された信号を送信する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1314336.7 | 2013-08-09 | ||
GB1314336.7A GB2516979A (en) | 2013-08-09 | 2013-08-09 | Predistortion in satellite signal transmission systems |
PCT/GB2014/052414 WO2015019091A1 (en) | 2013-08-09 | 2014-08-06 | Predistortion in satellite signal transmission systems |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016529822A true JP2016529822A (ja) | 2016-09-23 |
JP6827613B2 JP6827613B2 (ja) | 2021-02-10 |
Family
ID=49261986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016532736A Active JP6827613B2 (ja) | 2013-08-09 | 2014-08-06 | 衛星信号伝送システムにおける予歪み |
Country Status (6)
Country | Link |
---|---|
US (1) | US9735857B2 (ja) |
EP (1) | EP3031134A1 (ja) |
JP (1) | JP6827613B2 (ja) |
CA (1) | CA2920801C (ja) |
GB (1) | GB2516979A (ja) |
WO (1) | WO2015019091A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US9641206B2 (en) * | 2015-01-14 | 2017-05-02 | Analog Devices Global | Highly integrated radio frequency transceiver |
KR101679230B1 (ko) | 2015-07-02 | 2016-11-24 | 서강대학교산학협력단 | 전력증폭기의 비선형 특성을 보상하는 다항식 디지털 전치왜곡 장치 및 그 방법 |
US10771145B2 (en) * | 2016-03-11 | 2020-09-08 | SEAKR Engineering, Inc. | Power efficiency in beamforming RF systems |
GB201613948D0 (en) | 2016-08-15 | 2016-09-28 | Univ Surrey | Load modulation in signal transmission |
US10003416B1 (en) | 2016-12-16 | 2018-06-19 | Rohde & Schwarz Gmbh & Co. Kg | Method for measuring characteristics of a transmitter unit of a device under test, test system and radio frequency device |
CN113993209A (zh) * | 2020-07-27 | 2022-01-28 | 大唐移动通信设备有限公司 | 一种波束确定方法及设备 |
US11611391B1 (en) * | 2021-02-19 | 2023-03-21 | Mission Microwave Technologies, Llc | Satellite communications solid-state block upconverter with gain compensation |
Citations (9)
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JP2006174418A (ja) * | 2004-12-17 | 2006-06-29 | Andrew Corp | 信号包絡線のディジタル的な先行ひずませを用いた包絡線トラッキング電力増幅器を有する送信器 |
JP2007511187A (ja) * | 2003-11-20 | 2007-04-26 | ノースロップ グルムマン コーポレイション | 可変供給電圧増幅器システム |
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WO2012175709A1 (en) * | 2011-06-24 | 2012-12-27 | Nujira Limited | Envelope tracking system for mimo |
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2013
- 2013-08-09 GB GB1314336.7A patent/GB2516979A/en not_active Withdrawn
-
2014
- 2014-08-06 JP JP2016532736A patent/JP6827613B2/ja active Active
- 2014-08-06 US US14/910,799 patent/US9735857B2/en active Active
- 2014-08-06 CA CA2920801A patent/CA2920801C/en active Active
- 2014-08-06 WO PCT/GB2014/052414 patent/WO2015019091A1/en active Application Filing
- 2014-08-06 EP EP14750615.8A patent/EP3031134A1/en not_active Ceased
Patent Citations (9)
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JPH0750599A (ja) * | 1991-04-18 | 1995-02-21 | Kenwood Corp | 送信出力切換回路 |
JP2007511187A (ja) * | 2003-11-20 | 2007-04-26 | ノースロップ グルムマン コーポレイション | 可変供給電圧増幅器システム |
JP2006174418A (ja) * | 2004-12-17 | 2006-06-29 | Andrew Corp | 信号包絡線のディジタル的な先行ひずませを用いた包絡線トラッキング電力増幅器を有する送信器 |
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US20090088093A1 (en) * | 2007-10-01 | 2009-04-02 | Nokia Corporation | Signal predistortion in radio transmitter |
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WO2012175709A1 (en) * | 2011-06-24 | 2012-12-27 | Nujira Limited | Envelope tracking system for mimo |
Also Published As
Publication number | Publication date |
---|---|
WO2015019091A1 (en) | 2015-02-12 |
JP6827613B2 (ja) | 2021-02-10 |
CA2920801C (en) | 2021-12-07 |
EP3031134A1 (en) | 2016-06-15 |
US20160191146A1 (en) | 2016-06-30 |
CA2920801A1 (en) | 2015-02-12 |
US9735857B2 (en) | 2017-08-15 |
GB201314336D0 (en) | 2013-09-25 |
GB2516979A (en) | 2015-02-11 |
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