CA2369227C - Digital transmitter system and method - Google Patents
Digital transmitter system and method Download PDFInfo
- Publication number
- CA2369227C CA2369227C CA002369227A CA2369227A CA2369227C CA 2369227 C CA2369227 C CA 2369227C CA 002369227 A CA002369227 A CA 002369227A CA 2369227 A CA2369227 A CA 2369227A CA 2369227 C CA2369227 C CA 2369227C
- Authority
- CA
- Canada
- Prior art keywords
- analog
- frequency
- analog signal
- digital
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 154
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 238000004891 communication Methods 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 7
- 238000001228 spectrum Methods 0.000 description 20
- 230000001413 cellular effect Effects 0.000 description 17
- 239000002131 composite material Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 229920005994 diacetyl cellulose Polymers 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 101100458289 Drosophila melanogaster msps gene Proteins 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 230000010267 cellular communication Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/784,846 US6944238B2 (en) | 2001-02-16 | 2001-02-16 | Digital transmitter system and method |
| US09/784,846 | 2001-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2369227A1 CA2369227A1 (en) | 2002-08-16 |
| CA2369227C true CA2369227C (en) | 2005-03-29 |
Family
ID=25133706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002369227A Expired - Fee Related CA2369227C (en) | 2001-02-16 | 2002-01-23 | Digital transmitter system and method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6944238B2 (enExample) |
| EP (1) | EP1233507B1 (enExample) |
| JP (1) | JP4018406B2 (enExample) |
| KR (1) | KR100470255B1 (enExample) |
| CA (1) | CA2369227C (enExample) |
| DE (1) | DE60207456T2 (enExample) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2390497A (en) * | 2002-07-04 | 2004-01-07 | R F Engines Ltd | Frequency band separation using complex frequency shifting converters |
| US20050175073A1 (en) * | 2002-11-01 | 2005-08-11 | Kari Pajukoski | Data transmission method and transmitter |
| KR100585933B1 (ko) * | 2003-08-20 | 2006-06-01 | 한국전자통신연구원 | 디지털 멀티미디어 방송 시스템 및 그 방법 |
| US8019015B2 (en) * | 2007-02-26 | 2011-09-13 | Harris Corporation | Linearization of RF power amplifiers using an adaptive subband predistorter |
| WO2008139219A2 (en) * | 2007-05-10 | 2008-11-20 | Astrium Limited | Signal processing system |
| US8588327B1 (en) * | 2007-12-31 | 2013-11-19 | Apple Inc. | Digital transmitter |
| US7642850B2 (en) * | 2008-04-02 | 2010-01-05 | Harris Corporation | Feedforward linearization of RF power amplifiers |
| JP5861084B2 (ja) * | 2012-01-23 | 2016-02-16 | パナソニックＩｐマネジメント株式会社 | 無線回路及び照明制御システム |
| CN103974089B (zh) * | 2013-02-06 | 2017-07-28 | 北京昆腾微电子有限公司 | 无线音视频发射机及无线音视频处理方法 |
| EP4472083A3 (en) * | 2017-08-10 | 2025-02-26 | Outdoor Wireless Networks LLC | Methods and apparatuses for digital pre-distortion |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987280A (en) * | 1975-05-21 | 1976-10-19 | The United States Of America As Represented By The Secretary Of The Navy | Digital-to-bandpass converter |
| DE3021012C2 (de) * | 1980-06-03 | 1985-08-22 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verallgemeinertes interpolativers Verfahren zur Digital-Analog-Umsetzung von PCM Signalen |
| US4484178A (en) * | 1982-06-22 | 1984-11-20 | International Business Machines Corporation | Digital-to-analog converter |
| US4855894A (en) * | 1987-05-25 | 1989-08-08 | Kabushiki Kaisha Kenwood | Frequency converting apparatus |
| JPH0648767B2 (ja) * | 1989-06-08 | 1994-06-22 | 株式会社ケンウッド | ディジタル振幅変調装置 |
| US5220557A (en) | 1991-09-23 | 1993-06-15 | Hughes Aircraft Company | Multiple use digital transmitter/transceiver with time multiplexing |
| JPH09504917A (ja) * | 1993-09-13 | 1997-05-13 | アナログ・ディバイセス・インコーポレーテッド | 不均一サンプル率を用いたディジタルアナログ変換 |
| JPH08330968A (ja) * | 1995-01-12 | 1996-12-13 | Texas Instr Inc <Ti> | オーバーサンプリング・ディジタル／アナログ変換器及びその補償方法 |
| US5930301A (en) | 1996-06-25 | 1999-07-27 | Harris Corporation | Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter |
| US5924031A (en) * | 1997-01-21 | 1999-07-13 | Hughes Electronics Corporation | Interconnective transponder systems and methods |
| IT1294284B1 (it) | 1997-07-29 | 1999-03-24 | Italtel Spa | Radiotrasmettitore a larga banda per un segnale costituito da una pluralita' di portanti equispaziate modulate digitalmente |
| US6268818B1 (en) | 1998-06-24 | 2001-07-31 | Conexant Systems, Inc. | Method and apparatus for improving modulation accuracy |
| KR200190642Y1 (ko) * | 2000-03-07 | 2000-08-01 | 엘지정보통신주식회사 | 변환기의 출력 조절 장치 |
| US6507303B1 (en) * | 2000-05-31 | 2003-01-14 | 3Com Corp | Direct digital conversion of baseband signals to super-nyquist frequencies |
-
2001
- 2001-02-16 US US09/784,846 patent/US6944238B2/en not_active Expired - Lifetime
-
2002
- 2002-01-23 CA CA002369227A patent/CA2369227C/en not_active Expired - Fee Related
- 2002-01-28 EP EP02250556A patent/EP1233507B1/en not_active Expired - Lifetime
- 2002-01-28 DE DE60207456T patent/DE60207456T2/de not_active Expired - Lifetime
- 2002-02-07 KR KR10-2002-0006978A patent/KR100470255B1/ko not_active Expired - Fee Related
- 2002-02-14 JP JP2002036400A patent/JP4018406B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20020114403A1 (en) | 2002-08-22 |
| JP4018406B2 (ja) | 2007-12-05 |
| KR100470255B1 (ko) | 2005-02-07 |
| JP2002271212A (ja) | 2002-09-20 |
| EP1233507A1 (en) | 2002-08-21 |
| EP1233507B1 (en) | 2005-11-23 |
| US6944238B2 (en) | 2005-09-13 |
| DE60207456D1 (de) | 2005-12-29 |
| DE60207456T2 (de) | 2006-08-03 |
| KR20020067625A (ko) | 2002-08-23 |
| CA2369227A1 (en) | 2002-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |