US3683299A - Super-high frequency transmission line - Google Patents

Super-high frequency transmission line Download PDF

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Publication number
US3683299A
US3683299A US128852A US3683299DA US3683299A US 3683299 A US3683299 A US 3683299A US 128852 A US128852 A US 128852A US 3683299D A US3683299D A US 3683299DA US 3683299 A US3683299 A US 3683299A
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Prior art keywords
waveguide
dielectric waveguide
rectangular
super
high frequency
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Expired - Lifetime
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US128852A
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English (en)
Inventor
Viktor Feodosievich Vzyatyshev
German Danilovich Rozhkov
Boris Ivanovich Ryabov
Vasily Semenovich Udovenchik
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MO EMERGETICHESKY I
MOSKOVSKY ORDENA LENINA EMERGETICHESKY INST
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MO EMERGETICHESKY I
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Priority claimed from DE19712115380 external-priority patent/DE2115380C3/de
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    • 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
    • H01P3/16—Dielectric waveguides, i.e. without a longitudinal conductor

Definitions

  • ABSTRACT A super-high frequency transmission line in which each retaining member of a rectangular dielectric waveguide consists of metal plates pressed against the minor faces of the rectangular dielectric waveguides, the ends of the plates being bent away from these faces so that the reflection from the plates does not exceed a predetermined level, whereas the major faces of the rectangular dielectric waveguide in the horn tapers are arranged normal to the major faces of the rectangular metal waveguide.
  • the present invention relates to devices for transmitting electromagnetic waves of the super-high frequency band and, more specifically, the invention relates to super-high frequency transmission lines comprising a dielectric waveguide and intended for building up various functional blocks such as attenuators, phase shifters, and measuring systems, for example bridge circuits for measuring partial reflections.
  • super-high frequency transmission lines comprising a rectangular dielectric waveguide complete with retaining members and horn tapers at the end of the line between a rectangular dielectric waveguide and a rectangular metal waveguide.
  • a rectangular dielectric waveguide is secured within a hollow shielding cylinder with the help of retaining members in the form of thin washers made of a material having a dielectric constant close to unity, while the ends of the dielectric waveguide are arranged within the horn tapers.
  • Such making of the members for fixing the dielectric waveguide does not provide for adequately rigid fixing of the dielectric waveguide along the axis of a flexible transmission line and, on the other hand, does not ensure a rigid and accurate joint of the ends of the dielectric waveguide when the transmission line must be complete with separate functional blocks, for example an attenuator of a phase shifter, made of a dielectric waveguide.
  • An object of the present invention is to provide a super-high frequency transmission line equipped with a rectangular dielectric waveguide and having retaining members ensuring rigid fixing of the dielectric waveguide so that, when the transmission line is made of separate pieces of a dielectric waveguide or is made of various functional blocks, for example attenuators or phase shifters, these retaining members would have a minimum effect on the transmission line characteristics.
  • each retaining member is made of metal plates pressed to the minor faces of the rectangular dielectric waveguide by a clamp, in which case the ends of the metal plates disposed at least at one side of the clamp are bent off from these faces so that the reflection from these plates does not exceed a predetermined level, the major faces of the rectangular dielectric waveguide being arranged normal to the major faces of the rectangular metal waveguide.
  • ends of the metal plates of the retaining members adjacent to the horn tapers disposed at the other side of the clamp are conjugated with the walls of these tapers.
  • the abovedescribed making of the present superhigh frequency transmission line provides for rigid mounting of the dielectric waveguide made of either a rigid or flexible material without deteriorating the characteristics of the line. Furthermore, the rigid fixing of the waveguide is provided when assembling the line of separate pieces of a waveguide or when bending or twisting some sections of the waveguide.
  • FIG. 1 is a general view of the present super-high frequency transmission line
  • FIG. 2 is one of the forms of making the retaining members of the dielectric waveguide of the present super-high frequency transmission line (a section through the longitudinal axis of the dielectric waveguide);
  • FIG. 3 is the same, a top view
  • FIG. 4 is the same, a sectional view taken along the line IV-IV in FIG. 2;
  • FIG. 5 is another form of making the retaining members of the dielectric waveguide of the present superhigh frequency transmission line (a section through the longitudinal axis of the dielectric waveguide);
  • FIG. 6 is the same, a sectional view taken along the line VI-VI in FIG. 5;
  • FIG. 7 is the same, a sectional view taken along the line VII-VII in FIG. 5;
  • FIG. 8 is the same, a sectional view taken along the line VIII-VIII in FIG. 5;
  • FIG. 9 is the same, a sectional view taken along the line IXIX in FIG. 5;
  • FIG. 10 is the same, a sectional view taken along the line XX in FIG. 5;
  • FIG. 11 is the same, a sectional view taken along the line XI-XI in FIG. 5;
  • FIG. 12 is the same, a sectional view taken along the line XII-XII in FIG. 5;
  • FIG. 13 is the same, a sectional view taken along the line XIII-XIII in FIG. 5.
  • the super-high frequency transmission line comprises a rectangular dielectric waveguide 1 (FIG. I) with retaining members 2 and horn tapers 3 at the ends of the line between the rectangular dielectric waveguide 1 and a rectangular metal waveguide 4.
  • Each retaining member 2 consists of metal plates 5 and 5 pressed against the minor faces 6 of the rectangular dielectric waveguide 1 by a clamp 7.
  • the clamp 7 consists of screws 9 (FIGS. 1 to 4) set in a cantilever 10 and bearing upon an upper gasket 11.
  • the upper plate 5 is pressed to the screws 9 by means of flat springs 12 (FIGS. 1-3).
  • the lower gasket 13 (FIGS. 2 and 4) has a threaded hole 14 for mounting the retaining member 2 on the support 8.
  • the length L (FIG. 2) of the linear portion of the plates 5 is selected so as to provide: a required rigid fixing of the waveguide 1 in the member 2 and is equal to 20-10 mm.
  • the dimensions 2A and 2B (FIG. 3) are selected so as to provide for a drop of the field of the wave of the dielectric wave guide to a negligible level and is equal to 2) ⁇ m and 1.5 A m respectively, where A is a maximum wavelength of the operating frequency range of the rectangular dielectric waveguide 1 having a respective cross sectional area. For each section of the rectangular dielectric waveguide 1 the value of the radius of curvature R (FIG.
  • the length M of the curved portions of the plate 5 are selected so that in the given retaining member 2 the level of radiation losses does not exceed 0.1 db, while the standing wave factor thereof is better than 1.05 within one and one-half for the range of l to 1.5 mm.
  • the same unmodified retaining member 2 can be used for joining the ends of the rectangular dielectric waveguide 1.
  • the ends faces of the waveguides being joined are disposed in the plane IV- IV so that they contact each other, while the ends of the waveguides are squeezed between the plates 5 by means of the screws 9.
  • FIG. 1 illustrates only one retaining member 2 for fixing the dielectric waveguide l on the support 8.
  • the quantity of these members may be varied within a wide range. It is clear that the retaining member 2 can simultaneously be used for joining the dielectric waveguides l and for securing the waveguide 1 on the support 8.
  • the ends of the metal plates 5' located at one side of the clamp 7 are bent away from the minor faces 6 of the waveguide 1 so that the reflection from the plates 5 does not exceed a predetermined level, whereas the ends of the plates 5' located at the other side of the clamp 7 are conjugated with the walls of the horn tapers 3.
  • the walls 15 of the horn taper 3 are made integral with the plates 5', as shown in FIG. 5.
  • the clamp 7 is made in the form of a collar 16 (FIG. 5) with a screw 17 and a stop screw 18.
  • the collar 16 and the screw 17 are uses for squeezing the dielectric waveguide 1 between the plates 5 to provide a rigid connection.
  • the screw 17 is loosened and the dielectric waveguide can be easily removed.
  • the horn tapers 3 (FIG. 1) are joined with the metal wave guide 4 through flanges l9 and 20 of the rectangular metal waveguide 4.
  • Each horn taper 3 (FIG. 5) consists of three portions CD, DE, and EF providing for smooth transition from the section of the metal waveguide 4 shown in FIG. 6 to the section of a dielectric waveguide 1 shown in FIG. 7.
  • the major faces 21 of the rectangular dielectric waveguide are arranged normal to the major faces 22 of the rectangular metal waveguide 4.
  • the portion CD (FIG. 5) has a section equal to that of the metal waveguide 4 and a length equal approximately to A of the operating range of the rectangular dielectric waveguide 1.
  • the length of the horn taper 3 smoothly changes on the portion EF (FIG. 5) from the size of the minor face 24 (FIG. 6) of the metal waveguide 4 to the size of the major face 21 (FIG. 7) of the rectangular dielectric waveguide 1.
  • the portion FG (FIG. 5) is the retaining member 2.
  • FIGS. 9-13 illustrate the arrangement of the rectangular dielectric waveguide 1 relative to the walls 15 and 23 of the horn taper 3 and the plates 5' of the retaining member 2 in various sections of FIG. 5.
  • the level of the radiation loss does not exceed 0.1-0.4 db and the standing wave factor is not higher than l.O3l 10 within one-and-half frequency range.
  • the rectangular dielectric waveguide 1 used in this super-high frequency transmission line has a section side ratio a/b (FIG. 7) equal to 2.
  • the orientation of the electric field e of the principal wave of the metal waveguide 4 and the operating wave of the rectangular dielectric waveguide 1 are shown in FIGS. 6 and 7 respectively.
  • a ratio (1) for selectring a sectional area S of the rectangular dielectric waveguide l The minimum wavelength of the range A mm equal to the critical wavelength of the nearest highest type determines the sectional area S of the waveguide l.
  • the present super-high frequency transmission line operates as follows.
  • the principal wave H of the rectangular metal waveguide 4 through one of the horn tapers 3 excites in the rectangular dielectric waveguide l a working wave, the vector of the electric field E of which is orientated parallel to the major face 21 of the waveguide 1. Due to the smooth transition of the tapers the conversion of the wave I-I into the working wave of the dielectric waveguide 1 is effected at low losses.
  • the present super-high frequency transmission line can be assembled very simply of separate pieces of a dielectric waveguide or of separate functional blocks such as attenuators and phase shifters.
  • the super-high frequency transmission line disclosed herein may contain a great number of twists and bends and this is especially important when the line connects objects moving relative to each other.
  • This super-high frequency transmission line ensures quick and repeated assembly and disassembly, in which case these operations can be effected automatically.
  • a super-high frequency transmission line for transmitting super-high frequency waves from a source having an output in the form of a rectangular metal waveguide to a receiver having an input in the form of a rectangular metal waveguide comprising in combination: a rectangular dielectric waveguide; horn tapers at the ends of the line between said rectangular dielectric waveguide and said rectangular metal waveguide; retaining members for fixing said dielectric waveguide, each retaining member consisting of metal plates; said metal plates are pressed against the minor faces of said rectangular dielectric waveguide; means for clamping said metal plates; the ends of said metal plates disposed at least on one side of said clamping means are bent away from said minor faces of said rectangular dielectric waveguide so that the reflection from said plates does not exceed a predetermined level; the major faces of said rectangular dielectric waveguide in said horn tapers are set normal to the major faces of said rectangular metal waveguide.
  • a super-high frequency transmission line in which the ends of said metal plates of said retaining members in the immediate vicinity to said horn tapers are located on the other side of said clamping means and are conjugated with the walls of said tapers.

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  • Waveguides (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Waveguide Aerials (AREA)
  • Waveguide Connection Structure (AREA)
US128852A 1971-03-29 1971-03-29 Super-high frequency transmission line Expired - Lifetime US3683299A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12885271A 1971-03-29 1971-03-29
DE19712115380 DE2115380C3 (de) 1971-03-30 Höchstfrequenzfibertragungsleitung
GB945571 1971-04-15
FR7115626A FR2134298B1 (de) 1971-03-29 1971-04-30

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US3683299A true US3683299A (en) 1972-08-08

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FR (1) FR2134298B1 (de)
GB (1) GB1305002A (de)

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843353A (en) * 1984-12-19 1989-06-27 Martin Marietta Corporation Dielectric slab transistions and power couplers
US6452467B1 (en) * 1999-04-01 2002-09-17 Mcewan Technologies, Llc Material level sensor having a wire-horn launcher
US20070200749A1 (en) * 2006-02-24 2007-08-30 Mcewan Thomas E Reflection free launcher for electromagnetic guide wire
US7379016B1 (en) 2006-02-16 2008-05-27 Mcewan Technologies, Llc Carrier phase detection system for radar sensors
US20170098881A1 (en) * 2015-10-02 2017-04-06 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US9793955B2 (en) 2015-04-24 2017-10-17 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9806818B2 (en) 2015-07-23 2017-10-31 At&T Intellectual Property I, Lp Node device, repeater and methods for use therewith
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US9838078B2 (en) 2015-07-31 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9847850B2 (en) 2014-10-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US20180013498A1 (en) * 2013-12-10 2018-01-11 At&T Intellectual Property I, L.P. Quasi-optical coupler
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9876587B2 (en) 2014-10-21 2018-01-23 At&T Intellectual Property I, L.P. Transmission device with impairment compensation and methods for use therewith
US9887447B2 (en) 2015-05-14 2018-02-06 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US9912382B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595078A (en) * 1948-05-28 1952-04-29 Rca Corp Dielectric wave guide
US2737632A (en) * 1950-04-01 1956-03-06 Int Standard Electric Corp Supports for transmission line
US2745101A (en) * 1953-12-14 1956-05-08 Pierre G Marie Dielectric antenna with dielectric wave-guide feed
GB761659A (en) * 1952-04-15 1956-11-21 Siemens Ag Wave-guide arrangement consisting of dielectric material
US2791770A (en) * 1946-04-08 1957-05-07 Jacob R Risser Tapered electromagnetic horn
US2829351A (en) * 1952-03-01 1958-04-01 Bell Telephone Labor Inc Shielded dielectric wave guides
US3201724A (en) * 1964-01-07 1965-08-17 Hafner Theodore Suspension system for surface wave transmission line
US3452302A (en) * 1967-01-09 1969-06-24 Western Electric Co Coupling of dielectric to metallic waveguides
US3513416A (en) * 1967-01-30 1970-05-19 Varian Associates Cylindrical surface horn forming a transition between a closed periodic circuit and an open sided periodic circuit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791770A (en) * 1946-04-08 1957-05-07 Jacob R Risser Tapered electromagnetic horn
US2595078A (en) * 1948-05-28 1952-04-29 Rca Corp Dielectric wave guide
US2737632A (en) * 1950-04-01 1956-03-06 Int Standard Electric Corp Supports for transmission line
US2829351A (en) * 1952-03-01 1958-04-01 Bell Telephone Labor Inc Shielded dielectric wave guides
GB761659A (en) * 1952-04-15 1956-11-21 Siemens Ag Wave-guide arrangement consisting of dielectric material
US2745101A (en) * 1953-12-14 1956-05-08 Pierre G Marie Dielectric antenna with dielectric wave-guide feed
US3201724A (en) * 1964-01-07 1965-08-17 Hafner Theodore Suspension system for surface wave transmission line
US3452302A (en) * 1967-01-09 1969-06-24 Western Electric Co Coupling of dielectric to metallic waveguides
US3513416A (en) * 1967-01-30 1970-05-19 Varian Associates Cylindrical surface horn forming a transition between a closed periodic circuit and an open sided periodic circuit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Butson et al., The Effect of Flanges on the Radiation Patterns of Waveguide and Sectoral Horns, IEE vol 106B, 9-1959, pp. 422 426 *
Ramo et al., Fields and Waves in Modern Radio, John Wiley and Sons, 1953, pp. 388 393 *
Weiss et al., Low Loss Dielectric Waveguides, MTT 2 No. 3, 9-1954, pp. 38 44 *

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US6452467B1 (en) * 1999-04-01 2002-09-17 Mcewan Technologies, Llc Material level sensor having a wire-horn launcher
US7379016B1 (en) 2006-02-16 2008-05-27 Mcewan Technologies, Llc Carrier phase detection system for radar sensors
US20070200749A1 (en) * 2006-02-24 2007-08-30 Mcewan Thomas E Reflection free launcher for electromagnetic guide wire
US7345623B2 (en) 2006-02-24 2008-03-18 Mcewan Technologies, Llc Reflection free launcher for electromagnetic guide wire
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US10224590B2 (en) 2015-10-02 2019-03-05 At&T Intellectual Property I, L.P. Communication system, guided wave switch and methods for use therewith
US9876264B2 (en) * 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage

Also Published As

Publication number Publication date
FR2134298B1 (de) 1975-07-04
DE2115380A1 (de) 1972-10-05
DE2115380B2 (de) 1976-12-09
FR2134298A1 (de) 1972-12-08
GB1305002A (de) 1973-01-31

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