GB201116090D0 - Receiver - Google Patents

Receiver

Info

Publication number
GB201116090D0
GB201116090D0 GB201116090A GB201116090A GB201116090D0 GB 201116090 D0 GB201116090 D0 GB 201116090D0 GB 201116090 A GB201116090 A GB 201116090A GB 201116090 A GB201116090 A GB 201116090A GB 201116090 D0 GB201116090 D0 GB 201116090D0
Authority
GB
United Kingdom
Prior art keywords
sampling rate
sampling
signal component
adc
transceiver
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.)
Granted
Application number
GB201116090A
Other versions
GB2494695A (en
GB2494695B (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.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile Corp
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 Renesas Mobile Corp filed Critical Renesas Mobile Corp
Priority to GB201116090A priority Critical patent/GB2494695B/en
Priority to GB1207522.2A priority patent/GB2489337B/en
Publication of GB201116090D0 publication Critical patent/GB201116090D0/en
Priority to US13/625,116 priority patent/US8576897B2/en
Publication of GB2494695A publication Critical patent/GB2494695A/en
Application granted granted Critical
Publication of GB2494695B publication Critical patent/GB2494695B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H04B1/0003—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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
    • H03M1/1245—Details of sampling arrangements or methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transceivers (AREA)

Abstract

The present invention mitigates effects of alias responses in a transceiver by selecting a sampling rate 216â of an analogue-to-digital converter (ADC) to place an alias response 214â of an unwanted signal component 210 to a frequency range which is substantially non-overlapping with a wanted signal component 200 of the receiver. The unwanted signal component may be introduced by transmit leakage. Crucially, the selection of the sampling rate takes into account the maximum sampling rate of the ADC (step 408, Fig. 4). The maximum sampling rate is determined by the transceiver, for example by measuring temperature and indexing a look-up table or by sampling a known signal at a range of different sampling rates and identifying the sampling rate at which a deterioration in signal quality is observed. In the application the term conversion rate is used in place of sampling rate .
GB201116090A 2011-09-16 2011-09-16 Receiver Expired - Fee Related GB2494695B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB201116090A GB2494695B (en) 2011-09-16 2011-09-16 Receiver
GB1207522.2A GB2489337B (en) 2011-09-16 2011-09-16 Receiver
US13/625,116 US8576897B2 (en) 2011-09-16 2012-09-24 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201116090A GB2494695B (en) 2011-09-16 2011-09-16 Receiver

Publications (3)

Publication Number Publication Date
GB201116090D0 true GB201116090D0 (en) 2011-11-02
GB2494695A GB2494695A (en) 2013-03-20
GB2494695B GB2494695B (en) 2013-10-16

Family

ID=44937442

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1207522.2A Expired - Fee Related GB2489337B (en) 2011-09-16 2011-09-16 Receiver
GB201116090A Expired - Fee Related GB2494695B (en) 2011-09-16 2011-09-16 Receiver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1207522.2A Expired - Fee Related GB2489337B (en) 2011-09-16 2011-09-16 Receiver

Country Status (1)

Country Link
GB (2) GB2489337B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8300680B2 (en) * 2009-06-11 2012-10-30 Qualcomm Incorporated Apparatus and method for dynamic scaling of ADC sampling rate to avoid receiver interference

Also Published As

Publication number Publication date
GB2489337A (en) 2012-09-26
GB2489337B (en) 2014-03-19
GB201207522D0 (en) 2012-06-13
GB2494695A (en) 2013-03-20
GB2494695B (en) 2013-10-16

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140102 AND 20140108

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140109 AND 20140115

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160916