GB1527399A - Locating non-linear junctions between metallic materials and/or semi-conductive materials - Google Patents

Locating non-linear junctions between metallic materials and/or semi-conductive materials

Info

Publication number
GB1527399A
GB1527399A GB3684576A GB3684576A GB1527399A GB 1527399 A GB1527399 A GB 1527399A GB 3684576 A GB3684576 A GB 3684576A GB 3684576 A GB3684576 A GB 3684576A GB 1527399 A GB1527399 A GB 1527399A
Authority
GB
United Kingdom
Prior art keywords
junctions
signals
linear
semi
sept
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
GB3684576A
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.)
Westinghouse Canada Inc
Original Assignee
Westinghouse Canada 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 Westinghouse Canada Inc filed Critical Westinghouse Canada Inc
Publication of GB1527399A publication Critical patent/GB1527399A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
    • G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

1527399 Radar WESTINGHOUSE CANADA Ltd 6 Sept 1976 [11 Sept 1975] 36845/76 Heading H4D [Also in Division G1] Apparatus for beating non-linear junctions between metallic materials and/or semi-conductive materials includes signal generators 1, 2, for radiating respectively signals having different non- harmonically related frequencies f 1 , f 2 , and allowing them to impinge on such junctions, and a receiver 6 for detecting the presence of a predetermined frequency, given by n 1 f 1 Πn 2 f 2 , in a return signal, whereby the section of a non-linear device 8 is determined (n 1 and n 2 are integers). Non-linear junctions which exhibit a square law response with respect to voltage and current across the junction when illuminated by electromagnetic signals, reradiate harmonics related to the frequency of the illuminating electromagnetic signals. Range and bearing information can also be obtained using modulation signals 9, 10, superimposed on the carrier signals. The invention may act as a sonic transponder, e.g. a sonic position indicator.
GB3684576A 1975-09-11 1976-09-06 Locating non-linear junctions between metallic materials and/or semi-conductive materials Expired GB1527399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA235,208A CA1038039A (en) 1975-09-11 1975-09-11 Apparatus for locating non-linear junctions between metallic materials and/or semiconductive materials

Publications (1)

Publication Number Publication Date
GB1527399A true GB1527399A (en) 1978-10-04

Family

ID=4104013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3684576A Expired GB1527399A (en) 1975-09-11 1976-09-06 Locating non-linear junctions between metallic materials and/or semi-conductive materials

Country Status (2)

Country Link
CA (1) CA1038039A (en)
GB (1) GB1527399A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344423A (en) * 1998-10-07 2000-06-07 Res Electronics International Non-linear junctions detector using re-radiated electromagnetic waves
GB2351154A (en) * 1999-06-04 2000-12-20 Res Electronics Internat A method of detecting non-linear junctions using re-radiated electromagnetic signals
WO2002065419A1 (en) * 2001-02-13 2002-08-22 Audiotel International Limited Non-linear junction detector
GB2381078A (en) * 1999-06-04 2003-04-23 Res Electronics Internat A method of detecting non-linear junctions using re-radiated electromagnetic signals
EP1817179A1 (en) * 2004-05-27 2007-08-15 IQ-Mobil GmbH Method and device for the wireless transmission of signals, and use of such a method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2480787C1 (en) * 2011-09-12 2013-04-27 Владимир Авенирович Кропотов Method and system for remote detection of objects

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344423A (en) * 1998-10-07 2000-06-07 Res Electronics International Non-linear junctions detector using re-radiated electromagnetic waves
GB2344423B (en) * 1998-10-07 2002-02-06 Res Electronics Internat Non-linear junction detector
GB2351154A (en) * 1999-06-04 2000-12-20 Res Electronics Internat A method of detecting non-linear junctions using re-radiated electromagnetic signals
GB2381078A (en) * 1999-06-04 2003-04-23 Res Electronics Internat A method of detecting non-linear junctions using re-radiated electromagnetic signals
GB2381078B (en) * 1999-06-04 2003-10-01 Res Electronics Internat Pulse transmitting non-linear junction detector
GB2351154B (en) * 1999-06-04 2003-10-01 Res Electronics Internat Pulse transmitting non-linear junction detector
WO2002065419A1 (en) * 2001-02-13 2002-08-22 Audiotel International Limited Non-linear junction detector
US6897777B2 (en) 2001-02-13 2005-05-24 Audiotel International Limited Non-linear junction detector
EP1817179A1 (en) * 2004-05-27 2007-08-15 IQ-Mobil GmbH Method and device for the wireless transmission of signals, and use of such a method

Also Published As

Publication number Publication date
CA1038039A (en) 1978-09-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee