GB0807189D0 - Non-heterodyne frequency converter - Google Patents

Non-heterodyne frequency converter

Info

Publication number
GB0807189D0
GB0807189D0 GB0807189A GB0807189A GB0807189D0 GB 0807189 D0 GB0807189 D0 GB 0807189D0 GB 0807189 A GB0807189 A GB 0807189A GB 0807189 A GB0807189 A GB 0807189A GB 0807189 D0 GB0807189 D0 GB 0807189D0
Authority
GB
United Kingdom
Prior art keywords
frequency converter
heterodyne frequency
heterodyne
converter
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Withdrawn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
GB0807189A
Other versions
GB2459312A (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0807189A priority Critical patent/GB2459312A/en
Publication of GB0807189D0 publication Critical patent/GB0807189D0/en
Publication of GB2459312A publication Critical patent/GB2459312A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/005—Circuits for asymmetric modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
GB0807189A 2008-04-19 2008-04-19 Non-Heterodyne Frequency Converter which uses a Direct Digital Synthesiser Withdrawn GB2459312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0807189A GB2459312A (en) 2008-04-19 2008-04-19 Non-Heterodyne Frequency Converter which uses a Direct Digital Synthesiser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0807189A GB2459312A (en) 2008-04-19 2008-04-19 Non-Heterodyne Frequency Converter which uses a Direct Digital Synthesiser

Publications (2)

Publication Number Publication Date
GB0807189D0 true GB0807189D0 (en) 2008-05-21
GB2459312A GB2459312A (en) 2009-10-21

Family

ID=39472418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0807189A Withdrawn GB2459312A (en) 2008-04-19 2008-04-19 Non-Heterodyne Frequency Converter which uses a Direct Digital Synthesiser

Country Status (1)

Country Link
GB (1) GB2459312A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89845C (en) * 1991-09-04 1993-11-25 Nokia Mobile Phones Ltd Connection for generating broadcast signal in a radio telephone
US5563535A (en) * 1994-11-29 1996-10-08 Microunity Systems Engineering, Inc. Direct digital frequency synthesizer using sigma-delta techniques
GB2305037B (en) * 1995-09-08 2000-07-26 Motorola Israel Ltd Frequency modulation circuit and method of operation
US6321075B1 (en) * 1998-07-30 2001-11-20 Qualcomm Incorporated Hardware-efficient transceiver with delta-sigma digital-to-analog converter
US7881397B2 (en) * 2005-03-31 2011-02-01 Teradyne, Inc. Wireless communication system

Also Published As

Publication number Publication date
GB2459312A (en) 2009-10-21

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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)