GB793833A - Improvements relating to electromagnetic coupling arrangements - Google Patents

Improvements relating to electromagnetic coupling arrangements

Info

Publication number
GB793833A
GB793833A GB2023/56A GB202356A GB793833A GB 793833 A GB793833 A GB 793833A GB 2023/56 A GB2023/56 A GB 2023/56A GB 202356 A GB202356 A GB 202356A GB 793833 A GB793833 A GB 793833A
Authority
GB
United Kingdom
Prior art keywords
sets
radar
load
sources
frequency
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
GB2023/56A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB793833A publication Critical patent/GB793833A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

793,833. Waveguide filter circuits. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Jan. 20, 1956 [Jan. 21, 1955], No. 2023/56. Class 40 (8). [Also in Group XL (c)] An arrangement for coupling two radar sets or other radio-frequency sources operating at different frequencies to a common load consists of a length of line or waveguide 2-3 joining the two sources 10, 11; a further line or guide 4-5 connecting a matching load 13 to the intended load 12. At two points 6 and 7 the lines or guides are connected by 3 db directional couplers and mid-way between the couplers in each of them tuned filters 8 and 9 are arranged to pass energy of the frequency of source 10 and reject energy of the frequency of source 11. Preferably the filters are T. sections of waveguides with the cross-arm of the T in the connecting guides and the branch short-circuited so that their reactance is a minimum at frequency f and odd multiples thereof and a maximum at 2f and multiples thereof; f and the operating frequencies are so chosen that the source 10 is coupled to the output through both directional couplers and the source 11 through coupler 7 only. All the energy is fed to the load in each case and there is no interaction between the two sources. The common load may be a common aerial and it will be seen that where the sources are radar sets, return echo signals reach the appropriate radar. A plurality of coupling arrangements such as that shown in Fig. 1, may be used to link any number of radar sets to a common load, the sets being coupled in pairs and then the pairs being coupled and so on as necessary. Where the number of sets is not exactly 2n (n being any integer) one or more coupling units may be omitted. The coupling of 4 and 8 sets is described (Figs. 3 and 5 respectively, both not shown) and the arrangement of the radar frequencies and filter resonances discussed.
GB2023/56A 1955-01-21 1956-01-20 Improvements relating to electromagnetic coupling arrangements Expired GB793833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1154886X 1955-01-21

Publications (1)

Publication Number Publication Date
GB793833A true GB793833A (en) 1958-04-23

Family

ID=9649364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2023/56A Expired GB793833A (en) 1955-01-21 1956-01-20 Improvements relating to electromagnetic coupling arrangements

Country Status (3)

Country Link
DE (1) DE1154886B (en)
FR (1) FR1123310A (en)
GB (1) GB793833A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160438C (en) * 1968-10-18 1979-10-15 Hollandse Signaalapparaten Bv MICROWAVE ANTENNA.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106768A (en) * 1934-09-25 1938-02-01 American Telephone & Telegraph Filter system for high frequency electric waves
BE468045A (en) * 1942-07-30

Also Published As

Publication number Publication date
FR1123310A (en) 1956-09-20
DE1154886B (en) 1963-09-26

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