GB708600A - Couplers for microwave transmission systems - Google Patents

Couplers for microwave transmission systems

Info

Publication number
GB708600A
GB708600A GB1625252A GB1625252A GB708600A GB 708600 A GB708600 A GB 708600A GB 1625252 A GB1625252 A GB 1625252A GB 1625252 A GB1625252 A GB 1625252A GB 708600 A GB708600 A GB 708600A
Authority
GB
United Kingdom
Prior art keywords
line
conductors
ground
coupling
ground conductor
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
GB1625252A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority claimed from US234319A external-priority patent/US2721309A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB708600A publication Critical patent/GB708600A/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
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
    • H01P5/185—Edge coupled lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators

Landscapes

  • Waveguide Connection Structure (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Waveguides (AREA)

Abstract

708,600. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. June 27, 1952 [June 29, 1951], No. 16252/52. Class 40 (8) A microwave transmission system includes a coupling device making use of the so-called " line-ground " system described in Specification 704,050. The coupling comprises two line conductors 1, 9 which are spaced from a ground conductor 2 by the thickness of an insulator 3. The conductors 1, 9 may be printed on the insulator 3. The ground conductor 2 is wider than the line conductors and may comprise one of the walls of the chassis of the apparatus. A length #/2 of the line 9 runs parallel to the line 1, the distance between the lines determining the degree of coupling. In order to obtain directional coupling, an attenuator pad 11 of lossy, conductive material is disposed on or adjacent to a terminating portion 10 of the line 9 in the manner described in Specification 708,589. The line 1 may be connected to a coaxial input line 5 in the manner shown in Fig. 2 a dielectric bead 7 being inserted in the end of the coaxial line to compensate for the discontinuity caused by the joint 6. The line 1 may lead to a transmitter, receiver &c. 8. Fig. 4 shows a non- directional coupling arrangement. The terminal portions 14, 15 of the line 13 are turned at right angles to the line 1 and the parallel portion is continued beyond the terminal portions for a distance #/4. The outer ends of the #/4 portions 16, 17 are connected to the ground line 2 at 18, 19. A directional coupling may be obtained if one connection such as 14 is omitted with or without omission of the grounded section 17. The remaining section 16 then presents a highimpedance termination. The insulation 3 may be dispensed with, the conductors being supported above the ground conductor, e.g. by the ground connections 18, 19.
GB1625252A 1951-06-29 1952-06-27 Couplers for microwave transmission systems Expired GB708600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US234319A US2721309A (en) 1951-06-18 1951-06-29 Directional couplers for microwave transmission systems

Publications (1)

Publication Number Publication Date
GB708600A true GB708600A (en) 1954-05-05

Family

ID=22880875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1625252A Expired GB708600A (en) 1951-06-29 1952-06-27 Couplers for microwave transmission systems

Country Status (2)

Country Link
ES (1) ES203936A1 (en)
GB (1) GB708600A (en)

Also Published As

Publication number Publication date
ES203936A1 (en) 1952-07-01

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