GB0120070D0 - High accuracy radio frequency analogue to digital converters - Google Patents

High accuracy radio frequency analogue to digital converters

Info

Publication number
GB0120070D0
GB0120070D0 GB0120070A GB0120070A GB0120070D0 GB 0120070 D0 GB0120070 D0 GB 0120070D0 GB 0120070 A GB0120070 A GB 0120070A GB 0120070 A GB0120070 A GB 0120070A GB 0120070 D0 GB0120070 D0 GB 0120070D0
Authority
GB
United Kingdom
Prior art keywords
analogue
digital converter
frequency
high accuracy
radio frequency
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.)
Withdrawn
Application number
GB0120070A
Other versions
GB2378831A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chandler Stephen A G
Original Assignee
Chandler Stephen A G
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 Chandler Stephen A G filed Critical Chandler Stephen A G
Priority to GB0120070A priority Critical patent/GB2378831A/en
Publication of GB0120070D0 publication Critical patent/GB0120070D0/en
Publication of GB2378831A publication Critical patent/GB2378831A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1805—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a coaxial resonator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/402—Arrangements specific to bandpass modulators
    • H03M3/404—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)

Abstract

A radio frequency analogue to digital converter achieving high accuracy over a limited band-width comprises high gain amplifiers 12,13,14 incorporating bandpass filters in the form of single tunable resonators 15,16 tuned so that their resonant frequencies are at substantially the signal frequency, connected to perform the band-pass equivalent of integrators in the forward path of a delta sigma analogue to digital converter. A tuning arrangement comprises means to make the resonator oscillate and for adjusting a variable reactance within the resonators to tune the resonant circuits, together with digital circuitry to implement a phase locked loop to set the resonator frequency to that of the signal which it is desired to receive. Such an analogue to digital converter circuit may be used to digitize signals up to the microwave region with very high precision. This enables a radio receiver to be implemented on an integrated circuit with almost all filtering and the frequency conversion performed digitally.
GB0120070A 2001-08-17 2001-08-17 High accuracy radio frequency analogue to digital converter Withdrawn GB2378831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0120070A GB2378831A (en) 2001-08-17 2001-08-17 High accuracy radio frequency analogue to digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0120070A GB2378831A (en) 2001-08-17 2001-08-17 High accuracy radio frequency analogue to digital converter

Publications (2)

Publication Number Publication Date
GB0120070D0 true GB0120070D0 (en) 2001-10-10
GB2378831A GB2378831A (en) 2003-02-19

Family

ID=9920567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0120070A Withdrawn GB2378831A (en) 2001-08-17 2001-08-17 High accuracy radio frequency analogue to digital converter

Country Status (1)

Country Link
GB (1) GB2378831A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6693573B1 (en) 2003-03-19 2004-02-17 Raytheon Company Mixed technology MEMS/BiCMOS LC bandpass sigma-delta for direct RF sampling
DE10331572B4 (en) * 2003-07-11 2005-06-09 Infineon Technologies Ag Sigma-delta converter arrangement
DE102005003630A1 (en) * 2005-01-26 2006-07-27 Robert Bosch Gmbh Electromechanical delta-sigma-modulator for e.g. airbag control system of motor vehicle, has multibit-DAC to adjust amplification in servo loop and bandwidth of modulator independent of input signal of multibit-ADC

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5736950A (en) * 1995-01-31 1998-04-07 The United States Of America As Represented By The Secretary Of The Navy Sigma-delta modulator with tunable signal passband
US5729230A (en) * 1996-01-17 1998-03-17 Hughes Aircraft Company Delta-Sigma Δ-Σ modulator having a dynamically tunable continuous time Gm-C architecture

Also Published As

Publication number Publication date
GB2378831A (en) 2003-02-19

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)