GB1355143A - Microwave cavity resonator with printed circuit interior walls and modulation coils - Google Patents

Microwave cavity resonator with printed circuit interior walls and modulation coils

Info

Publication number
GB1355143A
GB1355143A GB644772A GB644772A GB1355143A GB 1355143 A GB1355143 A GB 1355143A GB 644772 A GB644772 A GB 644772A GB 644772 A GB644772 A GB 644772A GB 1355143 A GB1355143 A GB 1355143A
Authority
GB
United Kingdom
Prior art keywords
cavity
sheet
printed circuit
printed
interior walls
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
GB644772A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1355143A publication Critical patent/GB1355143A/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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/345—Constructional details, e.g. resonators, specially adapted to MR of waveguide type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making
    • Y10T29/49018—Antenna or wave energy "plumbing" making with other electrical component

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

1355143 Cavity resonators VARIAN ASSOCIATES 11 Feb 1972 [24 March 1971] 6447/72 Heading H1W [Also in Division G1] A microwave resonant cavity is formed by folding a printed circuit board. As shown, the invention is applied to the cavity of an electron paramagnetic resonance spectrometer of the kind in which a low frequency modulation is applied to the polarizing field. The sheet (e.g. of epoxy glass) is provided with circular apertures 24, 25 and is printed on the side which eventually lies on the outside of the cavity with the pattern shown. This includes two printed spirals 17, 18 to which modulating current is applied. The opposite (inner) side of the sheet is coated overall except in the areas opposite the modulation coils where a pattern of small holes is provided in order to improve penetration of the magnetic field into the cavity (Fig. 2, not shown). The sheet is cut and folded along the lines 26, 27, 28, the inner conductive coating being left intact and a soldered seam being used to join the edges 29. The cavity is completed by the insertion of dished end members 35 one of which is provided with a coupling aperture 38 and a flange member 37 for attachment to a waveguide feeder (not shown). Tubular members 41, 42 affixed over the openings 24, 25 are provided to facilitate insertion of samples. The whole cavity is potted in a suitable insulant 44.
GB644772A 1971-03-24 1972-02-11 Microwave cavity resonator with printed circuit interior walls and modulation coils Expired GB1355143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12774571A 1971-03-24 1971-03-24

Publications (1)

Publication Number Publication Date
GB1355143A true GB1355143A (en) 1974-06-05

Family

ID=22431726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB644772A Expired GB1355143A (en) 1971-03-24 1972-02-11 Microwave cavity resonator with printed circuit interior walls and modulation coils

Country Status (8)

Country Link
US (1) US3701959A (en)
JP (1) JPS5418591B1 (en)
AU (1) AU463492B2 (en)
CA (1) CA939025A (en)
CH (1) CH539342A (en)
DE (1) DE2207547C3 (en)
FR (1) FR2130338B1 (en)
GB (1) GB1355143A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246639A2 (en) * 1986-05-23 1987-11-25 Ball Corporation Atomic or molecular maser cavity resonator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931569A (en) * 1974-02-19 1976-01-06 Varian Associates Narrow cavity low cost EPR spectrometer
US4398149A (en) * 1981-02-02 1983-08-09 Varian Associates, Inc. NMR Probe coil system
WO1988001984A1 (en) * 1986-09-19 1988-03-24 Monash University Electron spin resonance spectrometer
JP3375089B2 (en) * 1992-06-09 2003-02-10 住友特殊金属株式会社 Thin cavity resonator for electron spin resonance
US5739690A (en) * 1996-04-04 1998-04-14 Colorado Seminary Crossed-loop resonator structure for spectroscopy
US8212563B2 (en) 2006-10-31 2012-07-03 Active Spectrum, Inc. Method and apparatus for in-situ measurement of soot by electron spin resonance (ESR) spectrometry
RU2691996C1 (en) * 2018-08-28 2019-06-19 Федеральное государственное бюджетное научное учреждение "Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук" Sensitive element of scanning ferromagnetic resonance spectrometer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2262020A (en) * 1938-01-15 1941-11-11 Bell Telephone Labor Inc Frequency stabilization at ultrahigh frequencies
US2636125A (en) * 1948-04-10 1953-04-21 Bell Telephone Labor Inc Selective electromagnetic wave system
FR1135677A (en) * 1955-02-28 1957-05-02 Siemens Ag Oscillating circuit for high frequencies
US3122703A (en) * 1959-12-21 1964-02-25 Varian Associates Gyromagnetic resonance method and apparatus
US3172035A (en) * 1961-05-08 1965-03-02 Varian Associates Probe for a gyromagnetic resonance apparatus
US3197692A (en) * 1962-04-02 1965-07-27 Varian Associates Gyromagnetic resonance spectroscopy
US3205432A (en) * 1962-05-25 1965-09-07 Edward L Cochran Cavity resonators
FR1372288A (en) * 1962-10-23 1964-09-11 Varian Associates Resonant microwave cavity
US3331017A (en) * 1962-12-13 1967-07-11 Varian Associates Frequency-compensated access structure for cavity resonator
FR1377538A (en) * 1963-09-26 1964-11-06 Thomson Houston Comp Francaise Method for producing thin unslit guides
US3195079A (en) * 1963-10-07 1965-07-13 Burton Silverplating Built up nonmetallic wave guide having metallic coating extending into corner joint and method of making same
GB1157805A (en) * 1965-07-30 1969-07-09 Emi Ltd Improvements in or relating to Circuit Elements especially for use as Scanning Coils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246639A2 (en) * 1986-05-23 1987-11-25 Ball Corporation Atomic or molecular maser cavity resonator
EP0246639A3 (en) * 1986-05-23 1988-07-27 Ball Corporation Atomic or molecular maser cavity resonator

Also Published As

Publication number Publication date
DE2207547A1 (en) 1972-10-05
US3701959A (en) 1972-10-31
CH539342A (en) 1973-07-15
DE2207547C3 (en) 1980-10-16
DE2207547B2 (en) 1980-02-28
CA939025A (en) 1973-12-25
AU3941872A (en) 1973-08-30
AU463492B2 (en) 1975-07-11
JPS5418591B1 (en) 1979-07-09
FR2130338A1 (en) 1972-11-03
FR2130338B1 (en) 1977-12-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee