GB926879A - Phase directional coupler - Google Patents

Phase directional coupler

Info

Publication number
GB926879A
GB926879A GB1619359A GB1619359A GB926879A GB 926879 A GB926879 A GB 926879A GB 1619359 A GB1619359 A GB 1619359A GB 1619359 A GB1619359 A GB 1619359A GB 926879 A GB926879 A GB 926879A
Authority
GB
United Kingdom
Prior art keywords
waveguide
impedance
frequency
slot
directional coupler
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
GB1619359A
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of GB926879A publication Critical patent/GB926879A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

926,879. Directional couplers. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. May 12, 1959 [May 13, 1958; Dec. 10, 1958], No. 16193/59. Class 40 (8). [Also in Group XXXVI] A directional coupler comprises two orthogonally disposed rectangular waveguides 1, 2 having a common broad-wall partition of quadrilateral form in which a rotatable slot is arranged on one of the diagonals. The slot may be dumb-bell shaped or elliptical in form and is capable of being revolved at high speeds. The coupler may be used as a measuring bridge for ascertaining the value of an impedance Zx. Power travelling towards this impedance and power reflected from it is coupled into the waveguide 2 and divides into two equal components which propagate in opposite directions. One end of the waveguide 2 is terminated by a matched load 4 and the other by a square law detector connected to measuring circuitry (see Group XXXVI). A frequency-dependent attenuator 5 is included in the waveguide 2 to compensate the variation of the coupling coefficient with frequency.
GB1619359A 1958-05-13 1959-05-12 Phase directional coupler Expired GB926879A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1309558 1958-05-13
JP3528758 1958-12-10

Publications (1)

Publication Number Publication Date
GB926879A true GB926879A (en) 1963-05-22

Family

ID=26348823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1619359A Expired GB926879A (en) 1958-05-13 1959-05-12 Phase directional coupler

Country Status (2)

Country Link
DE (1) DE1115798B (en)
GB (1) GB926879A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296257B (en) * 1962-11-15 1969-05-29 Nippon Telegraph & Telephone Reflection factor measurement circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476281A (en) * 1940-08-17
US2478317A (en) * 1945-07-09 1949-08-09 Edward M Purcell Directional coupler
BE477498A (en) * 1946-09-10

Also Published As

Publication number Publication date
DE1115798B (en) 1961-10-26

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