GB2247797B - Suppression of 3rd order distortion products in zero IF transceivers - Google Patents

Suppression of 3rd order distortion products in zero IF transceivers

Info

Publication number
GB2247797B
GB2247797B GB9019224A GB9019224A GB2247797B GB 2247797 B GB2247797 B GB 2247797B GB 9019224 A GB9019224 A GB 9019224A GB 9019224 A GB9019224 A GB 9019224A GB 2247797 B GB2247797 B GB 2247797B
Authority
GB
United Kingdom
Prior art keywords
transceivers
suppression
zero
order distortion
distortion products
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.)
Expired - Fee Related
Application number
GB9019224A
Other versions
GB9019224D0 (en
GB2247797A (en
Inventor
George Hedley Storm Rokos
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.)
Nortel Networks Ltd
STC PLC
Alcatel Submarine Networks UK Ltd
Nortel Networks Optical Components Ltd
Original Assignee
Northern Telecom Ltd
STC PLC
Northern Telecom Europe Ltd
STC Submarine Systems Ltd
STC Ltd
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 Northern Telecom Ltd, STC PLC, Northern Telecom Europe Ltd, STC Submarine Systems Ltd, STC Ltd filed Critical Northern Telecom Ltd
Priority to GB9019224A priority Critical patent/GB2247797B/en
Publication of GB9019224D0 publication Critical patent/GB9019224D0/en
Publication of GB2247797A publication Critical patent/GB2247797A/en
Application granted granted Critical
Publication of GB2247797B publication Critical patent/GB2247797B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1433—Balanced arrangements with transistors using bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1458—Double balanced arrangements, i.e. where both input signals are differential
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
GB9019224A 1990-09-04 1990-09-04 Suppression of 3rd order distortion products in zero IF transceivers Expired - Fee Related GB2247797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9019224A GB2247797B (en) 1990-09-04 1990-09-04 Suppression of 3rd order distortion products in zero IF transceivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9019224A GB2247797B (en) 1990-09-04 1990-09-04 Suppression of 3rd order distortion products in zero IF transceivers

Publications (3)

Publication Number Publication Date
GB9019224D0 GB9019224D0 (en) 1990-10-17
GB2247797A GB2247797A (en) 1992-03-11
GB2247797B true GB2247797B (en) 1994-07-20

Family

ID=10681606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9019224A Expired - Fee Related GB2247797B (en) 1990-09-04 1990-09-04 Suppression of 3rd order distortion products in zero IF transceivers

Country Status (1)

Country Link
GB (1) GB2247797B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412351A (en) * 1993-10-07 1995-05-02 Nystrom; Christian Quadrature local oscillator network
WO1995016303A1 (en) * 1993-12-06 1995-06-15 National Semiconductor Corporation Improved quadrature modulator
GB2331193B (en) * 1997-11-07 2001-07-11 Plessey Semiconductors Ltd Image reject mixer arrangements
GB2339657B (en) 1998-07-16 2003-04-16 Ifr Ltd Method and apparatus for compensating for distorsion in IQ modulators

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260378A2 (en) * 1986-09-19 1988-03-23 Licentia Patent-Verwaltungs-GmbH Modulation method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260378A2 (en) * 1986-09-19 1988-03-23 Licentia Patent-Verwaltungs-GmbH Modulation method

Also Published As

Publication number Publication date
GB9019224D0 (en) 1990-10-17
GB2247797A (en) 1992-03-11

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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)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050904