GB2174814B - Nuclear magnetic resonance apparatus with switched attenuator - Google Patents

Nuclear magnetic resonance apparatus with switched attenuator

Info

Publication number
GB2174814B
GB2174814B GB08610485A GB8610485A GB2174814B GB 2174814 B GB2174814 B GB 2174814B GB 08610485 A GB08610485 A GB 08610485A GB 8610485 A GB8610485 A GB 8610485A GB 2174814 B GB2174814 B GB 2174814B
Authority
GB
United Kingdom
Prior art keywords
magnetic resonance
nuclear magnetic
resonance apparatus
switched attenuator
attenuator
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
Application number
GB08610485A
Other versions
GB8610485D0 (en
GB2174814A (en
Inventor
Reginald Alfred Willard
William Spencer Percival
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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
Priority claimed from GB858511354A external-priority patent/GB8511354D0/en
Priority claimed from GB858511382A external-priority patent/GB8511382D0/en
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB08610485A priority Critical patent/GB2174814B/en
Publication of GB8610485D0 publication Critical patent/GB8610485D0/en
Publication of GB2174814A publication Critical patent/GB2174814A/en
Application granted granted Critical
Publication of GB2174814B publication Critical patent/GB2174814B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3614—RF power amplifiers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3607—RF waveform generators, e.g. frequency generators, amplitude-, frequency- or phase modulators or shifters, pulse programmers, digital to analog converters for the RF signal, means for filtering or attenuating of the RF signal

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB08610485A 1985-05-03 1986-04-29 Nuclear magnetic resonance apparatus with switched attenuator Expired GB2174814B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08610485A GB2174814B (en) 1985-05-03 1986-04-29 Nuclear magnetic resonance apparatus with switched attenuator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB858511354A GB8511354D0 (en) 1985-05-03 1985-05-03 Resonant circuit with switched attenuator
GB858511382A GB8511382D0 (en) 1985-05-03 1985-05-03 Waveform generator
GB08610485A GB2174814B (en) 1985-05-03 1986-04-29 Nuclear magnetic resonance apparatus with switched attenuator

Publications (3)

Publication Number Publication Date
GB8610485D0 GB8610485D0 (en) 1986-06-04
GB2174814A GB2174814A (en) 1986-11-12
GB2174814B true GB2174814B (en) 1988-10-12

Family

ID=27262673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08610485A Expired GB2174814B (en) 1985-05-03 1986-04-29 Nuclear magnetic resonance apparatus with switched attenuator

Country Status (1)

Country Link
GB (1) GB2174814B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614155C2 (en) * 1985-05-03 1994-09-01 British Tech Group Function generator for NMR devices
US4839594A (en) * 1987-08-17 1989-06-13 Picker International, Inc. Faraday shield localized coil for magnetic resonance imaging

Also Published As

Publication number Publication date
GB8610485D0 (en) 1986-06-04
GB2174814A (en) 1986-11-12

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GB2174814B (en) Nuclear magnetic resonance apparatus with switched attenuator

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960429