GB1320673A - Microwave spectroscopy - Google Patents

Microwave spectroscopy

Info

Publication number
GB1320673A
GB1320673A GB134371A GB1320673DA GB1320673A GB 1320673 A GB1320673 A GB 1320673A GB 134371 A GB134371 A GB 134371A GB 1320673D A GB1320673D A GB 1320673DA GB 1320673 A GB1320673 A GB 1320673A
Authority
GB
United Kingdom
Prior art keywords
waveguide
halves
plane
absorption
stark
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
GB134371A
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.)
Cambridge Scientific Instruments Ltd
Original Assignee
Cambridge Scientific Instruments 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 Cambridge Scientific Instruments Ltd filed Critical Cambridge Scientific Instruments Ltd
Publication of GB1320673A publication Critical patent/GB1320673A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/005—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more and using Stark effect modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1320673 Molecular absorption waveguide cells CAMBRIDGE SCIENTIFIC INSTRUMENTS Ltd 5 Jan 1972 [12 Jan 1971] 1343/71 Heading H1W [Also in Division G1] A absorption cell for Stark-modulation microwave spectroscopy (see Division G1) comprises a rectangular waveguide split along a central plane parallel to the longer sides to form two mutually-insulated halves F which are releasably held in position by axially-spaced clamps G. The waveguide halves F are spaced apart by T-shaped inserts B of PTFE and a clamping force is exerted by leaf-springs L insulated from the left-hand half by pads P of PTFE. The Stark-modulation field is applied between the two halves of the waveguide in a direction perpendicular to the E-plane. The E- plane dimension is over three times the normal value and the absorption waveguide is coupled to waveguides of normal dimensions by transitions tapered in the E-plane (Fig. 2, not shown). The assembly may be located in a gas-tight cylindrical housing H.
GB134371A 1971-01-12 1971-01-12 Microwave spectroscopy Expired GB1320673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB134371 1971-01-12

Publications (1)

Publication Number Publication Date
GB1320673A true GB1320673A (en) 1973-06-20

Family

ID=9720355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB134371A Expired GB1320673A (en) 1971-01-12 1971-01-12 Microwave spectroscopy

Country Status (3)

Country Link
US (1) US3784938A (en)
FR (1) FR2122172A5 (en)
GB (1) GB1320673A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5051394A (en) * 1973-09-05 1975-05-08
US4220915A (en) * 1978-06-28 1980-09-02 Rca Corporation Resistivity measurement system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6590477B1 (en) 1999-10-29 2003-07-08 Fci Americas Technology, Inc. Waveguides and backplane systems with at least one mode suppression gap
JP4679617B2 (en) * 2008-08-26 2011-04-27 三菱電機株式会社 Waveguide device, antenna, and vehicle radar device
WO2012044983A1 (en) 2010-09-30 2012-04-05 Aviat Networks, Inc. Systems and methods of waveguide assembly
US9128023B2 (en) * 2013-05-23 2015-09-08 Texas Instruments Incorporated Calibration scheme for gas absorption spectra detection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151157A (en) * 1936-10-31 1939-03-21 Bell Telephone Labor Inc Guided electromagnetic wave transmission
GB555195A (en) * 1941-07-10 1943-08-10 British Insulated Cables Ltd Improvements in guides for the transmission of electric waves
US2433368A (en) * 1942-03-31 1947-12-30 Sperry Gyroscope Co Inc Wave guide construction
DE883460C (en) * 1944-09-21 1953-07-16 Siemens Ag Coupling for high frequency lines
DE1441813B2 (en) * 1964-07-18 1972-02-24 Philips Patentverwaltung Gmbh, 2000 Hamburg FROM AT LEAST TWO PARTS ASSEMBLED WAVE LADDER
DE1515958A1 (en) * 1965-09-23 1970-01-02 Krone Gmbh Waveguide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5051394A (en) * 1973-09-05 1975-05-08
JPS5544904B2 (en) * 1973-09-05 1980-11-14
US4220915A (en) * 1978-06-28 1980-09-02 Rca Corporation Resistivity measurement system

Also Published As

Publication number Publication date
FR2122172A5 (en) 1972-08-25
US3784938A (en) 1974-01-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees