ATE159357T1 - Hochauflösungsumwandlung von phase zur sinusamplitude - Google Patents

Hochauflösungsumwandlung von phase zur sinusamplitude

Info

Publication number
ATE159357T1
ATE159357T1 AT89901507T AT89901507T ATE159357T1 AT E159357 T1 ATE159357 T1 AT E159357T1 AT 89901507 T AT89901507 T AT 89901507T AT 89901507 T AT89901507 T AT 89901507T AT E159357 T1 ATE159357 T1 AT E159357T1
Authority
AT
Austria
Prior art keywords
amplitude
series
term
data
lower phase
Prior art date
Application number
AT89901507T
Other languages
English (en)
Inventor
Lindsay A Weaver Jr
Richard J Kerr
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE159357T1 publication Critical patent/ATE159357T1/de

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F1/035—Reduction of table size
    • G06F1/0356—Reduction of table size by using two or more smaller tables, e.g. addressed by parts of the argument
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/04—Trigonometric functions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/08—Powers or roots

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Networks Using Active Elements (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Complex Calculations (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
AT89901507T 1988-01-19 1988-12-21 Hochauflösungsumwandlung von phase zur sinusamplitude ATE159357T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/145,789 US4905177A (en) 1988-01-19 1988-01-19 High resolution phase to sine amplitude conversion

Publications (1)

Publication Number Publication Date
ATE159357T1 true ATE159357T1 (de) 1997-11-15

Family

ID=22514559

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89901507T ATE159357T1 (de) 1988-01-19 1988-12-21 Hochauflösungsumwandlung von phase zur sinusamplitude

Country Status (6)

Country Link
US (1) US4905177A (de)
EP (1) EP0398910B1 (de)
JP (1) JP2768778B2 (de)
AT (1) ATE159357T1 (de)
DE (1) DE3856045T2 (de)
WO (1) WO1989006838A1 (de)

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US7457838B2 (en) * 2003-12-03 2008-11-25 Marvell World Trade Ltd. Methods and apparatus for performing calculations using reduced-width data
JP4199100B2 (ja) * 2003-12-12 2008-12-17 富士通株式会社 関数演算方法及び関数演算回路
WO2004082146A2 (en) * 2004-02-10 2004-09-23 Raytheon Company Digital-phase to digital amplitude translator with first bit off priority coded output for input to unit weighed digital to analog converter
US7129753B2 (en) * 2004-05-26 2006-10-31 Infineon Technologies Ag Chip to chip interface
US7437391B2 (en) * 2004-06-14 2008-10-14 Agilent Technologies, Inc. Numerically controlled oscillator and method of operation
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US7657589B2 (en) * 2005-08-17 2010-02-02 Maxim Integrated Products System and method for generating a fixed point approximation to nonlinear functions
US7984091B1 (en) * 2005-10-14 2011-07-19 Xilinx, Inc. Quadratic approximation for fast fourier transformation
WO2012025796A1 (en) * 2010-08-27 2012-03-01 M.S. Ramaiah School Of Advanced Studies Method and apparatus for direct digital synthesis of signals using taylor series expansion
US8659331B2 (en) * 2012-01-18 2014-02-25 Qualcomm Incorporated High accuracy sin-cos wave and frequency generators, and related systems and methods
US9021002B2 (en) 2013-02-05 2015-04-28 Hong Kong Applied Science & Technology Research Institute Company, Limited Phase-to-amplitude converter for direct digital synthesizer (DDS) with reduced AND and reconstructed ADD logic arrays
US8884664B1 (en) * 2013-03-15 2014-11-11 Anritsu Company Systems and methods for generating low band frequency sine waves
US10740432B1 (en) * 2018-12-13 2020-08-11 Amazon Technologies, Inc. Hardware implementation of mathematical functions

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Also Published As

Publication number Publication date
WO1989006838A1 (en) 1989-07-27
JPH04501025A (ja) 1992-02-20
HK1015180A1 (en) 1999-10-08
EP0398910A1 (de) 1990-11-28
DE3856045D1 (de) 1997-11-20
EP0398910A4 (en) 1992-03-11
US4905177A (en) 1990-02-27
DE3856045T2 (de) 1998-05-07
JP2768778B2 (ja) 1998-06-25
EP0398910B1 (de) 1997-10-15

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time