SE9404311L - Anordning och förfarande för frekvensenerering - Google Patents
Anordning och förfarande för frekvensenereringInfo
- Publication number
- SE9404311L SE9404311L SE9404311A SE9404311A SE9404311L SE 9404311 L SE9404311 L SE 9404311L SE 9404311 A SE9404311 A SE 9404311A SE 9404311 A SE9404311 A SE 9404311A SE 9404311 L SE9404311 L SE 9404311L
- Authority
- SE
- Sweden
- Prior art keywords
- generating
- code
- input code
- constituting
- modulated signal
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
- G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/902—Spectral purity improvement for digital function generators by adding a dither signal, e.g. noise
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Amplitude Modulation (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9404311A SE506694C2 (sv) | 1994-12-12 | 1994-12-12 | Anordning och förfarande för reducering av oönskade frekvenskomponenter vid digital frekvensgenerering |
EP95850215A EP0717340B1 (en) | 1994-12-12 | 1995-12-05 | Device and method for frequency generation |
DE69525909T DE69525909T2 (de) | 1994-12-12 | 1995-12-05 | Einrichtung und Verfahren zur Frequenzerzeugung |
US08/570,513 US5761101A (en) | 1994-12-12 | 1995-12-11 | Device and method for frequency generation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9404311A SE506694C2 (sv) | 1994-12-12 | 1994-12-12 | Anordning och förfarande för reducering av oönskade frekvenskomponenter vid digital frekvensgenerering |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9404311D0 SE9404311D0 (sv) | 1994-12-12 |
SE9404311L true SE9404311L (sv) | 1996-06-13 |
SE506694C2 SE506694C2 (sv) | 1998-02-02 |
Family
ID=20396297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9404311A SE506694C2 (sv) | 1994-12-12 | 1994-12-12 | Anordning och förfarande för reducering av oönskade frekvenskomponenter vid digital frekvensgenerering |
Country Status (4)
Country | Link |
---|---|
US (1) | US5761101A (sv) |
EP (1) | EP0717340B1 (sv) |
DE (1) | DE69525909T2 (sv) |
SE (1) | SE506694C2 (sv) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6748408B1 (en) * | 1999-10-21 | 2004-06-08 | International Buisness Machines Corporation | Programmable non-integer fractional divider |
US6587863B1 (en) * | 2000-06-27 | 2003-07-01 | Analog Devices, Inc. | Multiphase, interleaved direct digital synthesis methods and structures |
US6779849B1 (en) * | 2001-04-24 | 2004-08-24 | The Lane Company, Inc. | Multi-channel sling seat frame |
GB2449461A (en) * | 2007-05-23 | 2008-11-26 | Agilent Technologies Inc | Noise reduction in direct digital synthesis signal mixer by injecting then cancelling a pseudo noise component in the carrier wave |
US20100194444A1 (en) * | 2009-01-30 | 2010-08-05 | Agilent Technolgies, Inc | Reduction of spurious frequency components in direct digital synthesis |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4890248A (en) * | 1987-06-01 | 1989-12-26 | Hughes Aircraft Company | Method and apparatus for reducing aliasing in signal processing |
US5014231A (en) * | 1987-11-23 | 1991-05-07 | Hughes Aircraft Company | Randomized digital/analog converter direct digital synthesizer |
US4901265A (en) * | 1987-12-14 | 1990-02-13 | Qualcomm, Inc. | Pseudorandom dither for frequency synthesis noise |
US4951237A (en) * | 1988-04-22 | 1990-08-21 | Hughes Aircraft Company | Direct digital synthesizer with selectably randomized accumulator |
JPH0763124B2 (ja) * | 1993-02-24 | 1995-07-05 | 日本電気株式会社 | 直接デジタル周波数シンセサイザ |
US5291428A (en) * | 1993-03-02 | 1994-03-01 | Harris Corporation | Apparatus for reducing spurious frequency components in the output signal of a direct digital synthesizer |
-
1994
- 1994-12-12 SE SE9404311A patent/SE506694C2/sv not_active IP Right Cessation
-
1995
- 1995-12-05 DE DE69525909T patent/DE69525909T2/de not_active Expired - Lifetime
- 1995-12-05 EP EP95850215A patent/EP0717340B1/en not_active Expired - Lifetime
- 1995-12-11 US US08/570,513 patent/US5761101A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SE9404311D0 (sv) | 1994-12-12 |
SE506694C2 (sv) | 1998-02-02 |
EP0717340B1 (en) | 2002-03-20 |
EP0717340A1 (en) | 1996-06-19 |
DE69525909D1 (de) | 2002-04-25 |
DE69525909T2 (de) | 2002-11-07 |
US5761101A (en) | 1998-06-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MY118263A (en) | Ea modulator-controlled phase-locked-loop circuit | |
EP0782279A3 (en) | Maintenance of optical networks | |
EP0632378A3 (en) | Clock generator system with multiple frequency at the output. | |
DE69419961T2 (de) | FM-Empfänger mit einer Schaltung zur Überabtastung | |
TW333725B (en) | The modulating technology for eliminating phase noise of local oscillator | |
ATE175062T1 (de) | Ad-wandler mit moduliertem zittersignal | |
DE69735345D1 (de) | Vorrichtung zur Regeneration digitaler optischer Signale und ihre Verwendung zur Veränderung derartiger Signale | |
MY125711A (en) | Semiconductor laser driving method and optical disc apparatus | |
SE9404311L (sv) | Anordning och förfarande för frekvensenerering | |
SE0000699D0 (sv) | Krets och förfarande för dämpning av brus i en dataomvandlare | |
SE9003684D0 (sv) | A car-mounted booster system for hand-held phone | |
EP0845855A3 (en) | Voltage controlled oscillator | |
DE3885737D1 (de) | Verfahren zur mehrstufigen Impulsbreitenmodulation und Modulator dazu. | |
WO1999005588A3 (en) | Method of rapid prototyping for multifaceted and/or folded path lighting systems | |
GB2279518A (en) | Method and apparatus for digital modulation using concurrent pulse addition and substraction | |
RU95117086A (ru) | Способ и устройство для объединения совокупности входных сигналов | |
EP0883078A3 (en) | Clock input circuit | |
GB2248355B (en) | Digital chirp generator | |
JPS55105266A (en) | Scanning type electronic recorder | |
KR970031383A (ko) | 디지털신호 뮤트방법과 디지털신호 뮤트방법을 이용하는 디지털신호처리장치와 디지털신호 기록장치(method for muting a digital signal and a digital signal recording apparatus and a digital signal processing apparatus employing the digital signal muting method) | |
EP0540158A3 (sv) | ||
SE9604433D0 (sv) | Flerkanalsuppkonverterare/modulator och sätt för uppkonvertering/modulering | |
EP0962802A3 (en) | A solid state laser apparatus | |
TW277105B (en) | An intellectual human body sensor | |
RU1771059C (ru) | Цифровой синтезатор частот |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |