US2825875A - Radio frequency transducer - Google Patents
Radio frequency transducer Download PDFInfo
- Publication number
- US2825875A US2825875A US369643A US36964353A US2825875A US 2825875 A US2825875 A US 2825875A US 369643 A US369643 A US 369643A US 36964353 A US36964353 A US 36964353A US 2825875 A US2825875 A US 2825875A
- Authority
- US
- United States
- Prior art keywords
- conductor
- conductors
- parallel
- waveguide
- transducer
- 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 - Lifetime
Links
- 239000004020 conductor Substances 0.000 description 213
- 239000003989 dielectric material Substances 0.000 description 26
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 230000000644 propagated effect Effects 0.000 description 7
- 230000007704 transition Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RGJOEKWQDUBAIZ-IBOSZNHHSA-N CoASH Chemical compound O[C@@H]1[C@H](OP(O)(O)=O)[C@@H](COP(O)(=O)OP(O)(=O)OCC(C)(C)[C@@H](O)C(=O)NCCC(=O)NCCS)O[C@H]1N1C2=NC=NC(N)=C2N=C1 RGJOEKWQDUBAIZ-IBOSZNHHSA-N 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
Images
Classifications
-
- 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
- H01P3/081—Microstriplines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/085—Coaxial-line/strip-line transitions
Definitions
- This invention relates to radio frequency transducers and more particularly to transition structures from co-A axial waveguides to single or parallel conductor waveguides.v
- the transducer comprises two conductors, one of elongated form and the other of a wider conguration such as to present a planar conducting surface facing the first mentioned conductor.
- the two conductors are preferably spaced apart by a layer of dielectric material to maintain them in substantially parallel relation.
- Energy propagated over a coaxial waveguide is transferred to the parallel conductor arrangement by providing an opening through the planar conductor, the outer conductor of the coaxial waveguide being connected to the planar conductor coaxially of the opening with the inner conductor extending through the opening in electrical connection with the first or elongated conductor.
- Radio frequency energy propagated along the coaxial line is transferred readily for propagation along the first and second conductors in substantially the same mode of propagation as in the coaxial line.
- the wave energy is transferred from the spaced conductors to a waveguide of either the single conductor type or the parallel conductor type. Where itl is to be transferred to a single conductor the planar conductor is slotted along the zone underlying the elongated conductor, the slot being tiaredV gradually away from the elongated conductor whereby the wave energy is satisfactorily launched for propagation along an extension of the single elongated conductor.
- a third conductor is disposed in parallel relation to the elongated conductor or an extension thereof and is either coupled directly to the planar conductor or is disposed in parallel relation thereto.
- the planar conductor is terminated preferably in a tapered form a short distance from thecoaxial coupling.
- Fig. 1 is a view in perspective with parts cutaway to show one embodiment of the invention wherein a coaxial line is coupled to a waveguide of parallel conductors;
- Fig. 2 is a view in cross-section taken along line 2-2 of Fig. l;
- FIG. 3 Ais a view in cross-section similar to Fig. ⁇ 2, showing the parallel conductors with a greater spacing;
- Fig. 4 is a View in perspective of another embodiment of the invention wherein the conductors of the transducer are coupled to a waveguide of parallel conductor supported on a strip of dielectric material;
- Figs. 5 and 6 are cross-sectional views taken along lines 5-5 and 6 6, respectively, of Fig. 4;
- Fig. 7 is a view in plan of a modified form of coupling arrangement between a waveguide of parallel conductors and the conductors of the transducer;
- Fig. 8 is a view in side elevation with parts broken away showing a modified form of the coupling arrangement illustrated in Figs. 4 and 7;
- Fig. 9 is a view in cross-section taken along line 9-9 of Fig. 8;
- Fig. 10 is a cross-sectional view similar to Fig. 9 showing a slight variation of the parallel conductor waveguide that may be employed.
- Fig. 1l is a view in plan of a further embodiment of the invention showing a transducer arrangement coupling a coaxial line to a single conductor waveguide,
- the transducer of the'p'resent invention is shown to comprise a rst conductor 1 of elongated form and a second conductor 2 of planar form spaced apart by a layer of dielectric material 3.
- the planar conductor 2 as well as the layer of dielectric material is made wider than the conductor 1 so that radio frequency wavesmay be propagated therealong in a mode having some properties of the TEM mode.
- Wave energy from a coaxial waveguide is coupled to this type of parallel waveguide by providing the planar conductor 2 with an opening 4 about which is coupled the outer conductor 5 of a coaxial waveguide 6.
- the inner condluctor 7 is extended through the opening 4 and is connected directly to the elongated conductor 1 as indicated at 8.
- the transducer may have coupled thereto as an extension thereof a waveguide of paraHel condoctors as indicated by conductors 1a and 2a and dielectrie layer 3a.
- the conductor 2a is disposed in parallel relation to the conductor 1a on the same side of the dielectric layer 3a.
- the conductor 2a is preferably extended in overlying parallel relation to the planar conductor 2, the conductor 2a being angled away from conductor 1 as indicated at 9 and terminated by a layer of attenuating material 10 disposed thereon.
- the planar characteristic of conductor 2 is pref- .verably terminated a short distance from the coupling opening 4, the termination preferably being in a taper as indicated at 2c.
- the electromagnetic tield thus assumes a mode of propagation characteristic of parallel lines completely immersed in dielectric even though the two conductors are supported on the same side of a strip of dielectric material, it being understood, of course, that there will be some variation inthe eld distribution in view of the difference between the dielectric coeicient of the dielectric material and open space.
- the transducerarrangement is :shown wherein the.. angular. translation of. the ⁇ electric: Yel'dv is avoided.
- the transducer is shown to include a f'rst .conductor 11 of elongated tapered .form and a Vsecon'd'conductor 12 of. planar -configuration separated by a 'layer of. dielectric material 13.
- The. two conductors 11'and ⁇ I2 are Yboth tapered toward the point of coupling to a parallel conductorwaveguide, itfbeing preferable to'tape'r the.
- conductors comprise two strip conductors 14 and 15 car; ried on one side' ⁇ of a strip of dielectricmateral 16.
- the dielectric material 1'6 is disposed at right'ang'les to'the layer' 13 and 'thejspacing of the conductors 14 and'15' in' this illustration is shown to be the same as 'the Vthickness of Vthe layer 13.
- the conductors 14 vand 15 are tapered as indicated at 14a .and 15a so that the widths thereof correspond to the Vthickness of the conductors 11 and '12.
- Fig. 10 The wedge. spread at 20, Fig.-8, and the taperofconductor.. 11, Fig. 4, also provide for coupling high impedance parallel conductor waveguides to relatively low impedance transducer arrangements, for example 300 ohms to ohms.
- the transducer shownY in Fig..v 11 provides for translation of wave energy propagated along a coaxial waveguide to a'single conductor waveguide.
- Theltransducer structure is similar to the structures hereinabove. de.- scribed except that the Velongated.:conductor 211 mayj-"bev continued beyond the transducer as the singleconduetor waveguide 21a.
- the conductor 21 is spaced from the planar conductor 22 'by a layer of-dielectric lmaterial 23.
- the planar conductor 22,.however, isprovided with a slot 24 a short distance from the coaxial coupling indicated at 25, the slot being disposed in underlying relation to the elongated conductor 21.
- edges of the planar conductor 22 Ydefini-ng tthe :slot-are lil'aredzoutwardly-:fromitle conductor 2:1.:as1indicatedfat 26 and27xtherebyi providing.; a Atranslation .oi ⁇ themode .of ipropagation.
- Atransducer forradiofrequency energy comprising ⁇ a.;rst vconductor -of elongated .form,.a secondv conductor. disposed in dielectrically spaced substantiallyparallel:relation .to said rst conductor, said, secondconductorbeing wider. than said lfirst conductor .to presentajplanar surface in a given tplanenfacing,.-said,iirstA conductor, said second conductor having VanV opening. therethrough, a.. lco-m axial waveguidedisposed with the outer conductor thereofin electricalfconnection with said. second conductor about.: said.
- a transducer .toi-radio frequency .energy .comprising aaaaave arst conductor 'of elongated form, a second conductor, va layer of dielectric material interposed between said first .and second conductors to maintain them in spaced substantially parallel relation, said second conductor being wider than said first conductor to present a planar surface in a given plane facing said first conductor, said second conductor and said layer of dielectric material having openings .extending therethrough in alignment with said first conductor, a coaxial waveguide disposed with the outer conductor thereof in electrical connection with said second conductor coaxially of said openings and the inner conductor thereof extended through said openings in electrical connection with said first conductor, said first vconductor being extended from said opening for propagation of radio frequency waves therealong said second conductor having at least the planar characteristic thereof in said given plane terminated a short distance from said openings by a tapered portion with thetaper in the direction of the extension of said first conductor
- a transducer according to claim 5, wherein said second conductor has its said terminated planar characterisic thereof shaped to include an elongated slot disposed in substantially parallel underlying relation to said first conductor with the sides of said slot fiared outwardly away from said first conductor.
- a transducer wherein said ⁇ first and second conductors have joined contiguously thereto a waveguide of parallel conductors at a point of minimum width, the parallel conductors of said waveguide being maintained in parallel relation by a layer of dielectric material disposed at right angles to the plane of the layer of dielectric material interposed between said first and second conductors whereby the electric field propagation in a mode approximating the TEM mode along said first and second conductors is transferred for propagation along said parallel conductors in said TEM mode.
- a transducer wherein said parallel conductors are spaced apart a greater distance than the spacing between said first and second conductors, and dielectric wedge portions disposed on opposite sides of said first mentioned layer of dielectric material to support connecting lengths of conductors between the parallel conductors and said first and second conductors, respectively.
- said waveguide of parallel conductors comprises two conductors in strip form carried by a layer of dielectric material, the width of said strip conductors being tapered with the tapered portions thereof disposed in overlapping relation to at least part of said first and second conductors.
- a transducer for radio frequency energy comprising a first conductor of elongated form, a second conductor, a layer of dielectric material interposed between said first and second conductors to maintain them in spaced substantially parallel relation, said second conductor being wider than said first conductor to present ;a planar surface in a given plane facing said first conductor, said second conductor and said layer of dielectric v1 material having openings extending therethrough in alignment with said first conductor, a coaxial waveguide disposed with the outer conductor thereof in electrical connection with said second conductor coaxially of said openings and the inner conductor thereof extended through said openings in electrical connection with said first conwaveguide being maintained in parallel relation by a ⁇ layer of dielectric material disposed at right angles to the plane of the layer of dielectric material interposed between said lirst and second conductors, said first and second conductors being tapered to the parts thereof which are connected to said parallel conductors, the taper being such as to make the width of the lirst and second
- a transducer for radio frequency energy comprising a first conductor of elongated form, a second conductor, a layer of dielectric material interposed between said first and second conductors tol maintain them in spaced parallel relation, said second conductor being wider than said first conductor to present a planar conductive surface in a given plane facing said first conductor, said second conductor having at least the planar characteristic thereof in said given plane terminated by a tapered portion with the taper in the direction of the extension of said first conductor, a waveguide of parallel conductors joined contiguously to said first and second conductors at a point of minimum width, the parallel conductors of said waveguides being maintained 1n parallel relation by a layer of dielectric material disposed at right angles to the plane of the layer of the dielectric material interposed between said first and second conductors, whereby the electric field propagation in a mode approximating the TEM mode along said first and second conductors is transferred for propagation along said parallel conductors in said TEM mode.
- a transducer according to claim l2 wherein said parallel conductors are spaced apart a greater distance than the spacing between said first and second conductors, and dielectric wedge portions disposed on opposite sides of said first mentioned layer of dielectric material to support connecting lengths of conductors between the parallel conductors and said first and second conductors, respectively.
- a transducer according to claim l2, wherein said waveguide of parallel conductors comprises two conductors in strip form carried by a layer of dielectric material, the width of said strip conductors being tapered with the tapered portions thereof disposed in overlapping relation to at least part of said first and second conductors.
- a transducer for radio frequency energy comprising a first conductor of elongated form, a second conductor disposed in dielectrically spaced substantially parallel relation to said first conductor, said second conductor being wider than said first conductor to present a planar surface in a given plane facing said first conductor, said second conductor having an opening therethrough, a coaxial waveguide disposed with the outer conductor thereof in electrical connection with said second conductor about said opening and the inner conductor thereof extended through said opening in electrical connection with said first conductor, said first conductor being extended from said opening for propagation of radio frequency waves therealong, said second conductor having at least the planar characteristic thereof in said given plane terminated a short distance from said opening by a tapered portion with the taper in the direction of the extension of said first conductor whereby radio frequency waves propagated along said coaxial waveguide are transferred for propagation along said first conductor, and said first conductor has associated therewith a third conductor portion of elongated form disposed in parallel relation thereto to constitute a waveguide of parallel conduct
- -165 transducer for'radiofrequencyenergy comprising in garst'conductor of eiongatedrform; asecond'conduc'- tor, a'iayerof 'dielectri materia]V interposed' betweensaidv 'st and-second-l conduct'ors "to maintain them -in'V spaced” paralll'relation, saidk second' conductorbengwider thanY said v'rst' conductor to yresent 'a' planar ⁇ conductive surface-'in a Agiven plane facing saidrst conductor, said' sec# ond;fconductori'having" at least the pianar characteristic' thereof iin' said" given' plane terminated: by a" tapered E p'ortionf'witn'the tapery in the direction off the extension of;VV said rst conductor, a waveguide of.
Landscapes
- Waveguides (AREA)
- Waveguide Aerials (AREA)
- Communication Cables (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE530430D BE530430A (xx) | 1953-07-22 | ||
US369643A US2825875A (en) | 1953-07-22 | 1953-07-22 | Radio frequency transducer |
GB20749/54A GB767612A (en) | 1953-07-22 | 1954-07-16 | Microwave transducer |
CH327938D CH327938A (fr) | 1953-07-22 | 1954-07-20 | Dispositif de couplage haute fréquence |
FR67464D FR67464E (fr) | 1952-05-08 | 1954-07-20 | Système de transmission à haute fréquence et en particulier dispositif de couplage |
DEI8941A DE1005145B (de) | 1953-07-22 | 1954-07-22 | Anordnung zur Kopplung zwischen einer Koaxialleitung und einer nach Art der gedruckten Schaltung ausgefuehrten Bandleitung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US369643A US2825875A (en) | 1953-07-22 | 1953-07-22 | Radio frequency transducer |
Publications (1)
Publication Number | Publication Date |
---|---|
US2825875A true US2825875A (en) | 1958-03-04 |
Family
ID=23456298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US369643A Expired - Lifetime US2825875A (en) | 1952-05-08 | 1953-07-22 | Radio frequency transducer |
Country Status (5)
Country | Link |
---|---|
US (1) | US2825875A (xx) |
BE (1) | BE530430A (xx) |
CH (1) | CH327938A (xx) |
DE (1) | DE1005145B (xx) |
GB (1) | GB767612A (xx) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940007A (en) * | 1958-01-20 | 1960-06-07 | Gen Electric | Magnetron circuits |
US3047822A (en) * | 1957-12-23 | 1962-07-31 | Thompson Ramo Wooldridge Inc | Wave communicating device |
US3155930A (en) * | 1962-07-27 | 1964-11-03 | Sperry Rand Corp | Flanged conductive sleeve for connecting strip line with coaxial line |
US3259859A (en) * | 1962-03-15 | 1966-07-05 | Kaman Aircraft Corp | Power divider and attenuator |
US3784933A (en) * | 1971-05-03 | 1974-01-08 | Textron Inc | Broadband balun |
EP0092874A1 (en) * | 1982-04-26 | 1983-11-02 | Philips Electronics Uk Limited | Waveguide/microstrip mode transducer |
FR2531575A1 (fr) * | 1981-01-09 | 1984-02-10 | Thomson Csf | Dispositif de transition guide d'ondes a double redan-ligne coaxiale en bout et circuit hyperfrequence comportant un tel dispositif |
US4692720A (en) * | 1984-06-01 | 1987-09-08 | Siemens Aktiengesellschaft | Arrangement for producing a junction between a microstrip line and a coplanar transmission line |
EP0283396A1 (fr) * | 1987-03-20 | 1988-09-21 | Thomson-Csf | Jonction entre une ligne triplaque et une ligne microruban, et applications |
US20110181375A1 (en) * | 2010-01-04 | 2011-07-28 | Sony Corporation | Waveguide |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB424335A (en) * | 1960-09-06 | 1935-02-11 | Frederick Thomas Walker | Improvements in and relating to the manufacture of floor coverings and like materials |
US4428632A (en) * | 1979-08-10 | 1984-01-31 | Thomas & Betts Corporation | Coaxial cable transition connector |
DE2949013C2 (de) * | 1979-12-06 | 1985-05-02 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Übergang von einem Koaxialkabel auf einen mehrpoligen Steckverbinder |
GB2189652B (en) * | 1986-03-26 | 1990-01-24 | Plessey Co Plc | Adaptor for connecting a coaxial transmission line to a parallel plate transmission medium |
GB0326712D0 (en) * | 2003-11-17 | 2003-12-17 | Normington Peter R | Field purturbation balun |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2602856A (en) * | 1948-08-18 | 1952-07-08 | Victor H Rumsey | Power distribution system |
US2734170A (en) * | 1951-06-22 | 1956-02-07 | Sazanl |
-
0
- BE BE530430D patent/BE530430A/xx unknown
-
1953
- 1953-07-22 US US369643A patent/US2825875A/en not_active Expired - Lifetime
-
1954
- 1954-07-16 GB GB20749/54A patent/GB767612A/en not_active Expired
- 1954-07-20 CH CH327938D patent/CH327938A/fr unknown
- 1954-07-22 DE DEI8941A patent/DE1005145B/de active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2602856A (en) * | 1948-08-18 | 1952-07-08 | Victor H Rumsey | Power distribution system |
US2734170A (en) * | 1951-06-22 | 1956-02-07 | Sazanl |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3047822A (en) * | 1957-12-23 | 1962-07-31 | Thompson Ramo Wooldridge Inc | Wave communicating device |
US2940007A (en) * | 1958-01-20 | 1960-06-07 | Gen Electric | Magnetron circuits |
US3259859A (en) * | 1962-03-15 | 1966-07-05 | Kaman Aircraft Corp | Power divider and attenuator |
US3155930A (en) * | 1962-07-27 | 1964-11-03 | Sperry Rand Corp | Flanged conductive sleeve for connecting strip line with coaxial line |
US3784933A (en) * | 1971-05-03 | 1974-01-08 | Textron Inc | Broadband balun |
FR2531575A1 (fr) * | 1981-01-09 | 1984-02-10 | Thomson Csf | Dispositif de transition guide d'ondes a double redan-ligne coaxiale en bout et circuit hyperfrequence comportant un tel dispositif |
EP0092874A1 (en) * | 1982-04-26 | 1983-11-02 | Philips Electronics Uk Limited | Waveguide/microstrip mode transducer |
US4692720A (en) * | 1984-06-01 | 1987-09-08 | Siemens Aktiengesellschaft | Arrangement for producing a junction between a microstrip line and a coplanar transmission line |
EP0283396A1 (fr) * | 1987-03-20 | 1988-09-21 | Thomson-Csf | Jonction entre une ligne triplaque et une ligne microruban, et applications |
FR2612697A1 (fr) * | 1987-03-20 | 1988-09-23 | Thomson Csf | Jonction entre une ligne triplaque et une ligne microruban et applications |
US20110181375A1 (en) * | 2010-01-04 | 2011-07-28 | Sony Corporation | Waveguide |
Also Published As
Publication number | Publication date |
---|---|
GB767612A (en) | 1957-02-06 |
DE1005145B (de) | 1957-03-28 |
CH327938A (fr) | 1958-02-15 |
BE530430A (xx) |
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