US2527664A - Wave-signal translating system for selected band of wave-signal frequencies - Google Patents

Wave-signal translating system for selected band of wave-signal frequencies Download PDF

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US2527664A
US2527664A US627473A US62747345A US2527664A US 2527664 A US2527664 A US 2527664A US 627473 A US627473 A US 627473A US 62747345 A US62747345 A US 62747345A US 2527664 A US2527664 A US 2527664A
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wave
conductors
length
portions
coupling
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Harold A Wheeler
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Hazeltine Research Inc
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Hazeltine Research Inc
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Priority to FR939388D priority patent/FR939388A/fr
Priority to GB32744/46A priority patent/GB627870A/en
Priority to DEH5510A priority patent/DE825102C/de
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    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0123—Frequency selective two-port networks comprising distributed impedance elements together with lumped impedance elements

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  • the present invention relates to wave-signal translating systems and, particularly, to such systems of the resonant type which selectively translate wave signals lying within a predetermined band of wave-signal frequencies, the translation band being either narrow or wide as desired.
  • the invention relates to a translating system of the type described having a plurality of tandem-arranged coupled resonant circuits which in their tandem relationship provide a desired band-pass characteristic for the system.
  • Wave-signal transmission lines of the correct length have resonant properties which render them suitable for this purpose. Such lines may be so constructed and arranged that they exhibit the desirable characteristics last mentioned. However, it heretofore has been considered essential that, to prevent undesirable intercoupling between the lines, each such transmission line be isolated from any other similar line, either by the use of adequate wave-signal shields between the lines or by the interposition between the lines of wave-signal repeater devices having unidirectional translating characteristics, or both. Where'three, four, or even more such transmission lines must be utilized in tandem to provide a desired over-all band-pass characteristic, it is apparent that the use of individual isolating wave-signal shields for each line may easily lead to structural complications.
  • a wave-signal translating system comprises a pair of elongated conductors spaced less than one radian length at a given wave lengthand adapted to develop by resonance at approximately the given wave length a standing wave along each such conductor thereof.
  • These conductors have with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at the given wave length and are axially so positioned and at least partially exposed with relation to one another that the portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along the aforesaid portions have at adjacent points on the conductors approximately the same phase relationships.
  • the translating system includes a coupling member disposed between the aforesaid portions of the conductors and proportioned unequally to disturb the opposing couplings over a distance less than one-half the length of the aforesaid portions, whereby the conductors are coupled by an excess of one kind of the inductive and capacitive coupling developed in the intervening space between the aforesaid portions thereof.
  • Fig. l is a vcircuit diagram, partly schematic, representing a complete wave-signal system embodying the present invention in a particular form
  • Fig. la represents the equivalent circuit diagram of a portion of the Fig. l system
  • Figs. 2-5 inclusive, schematically represent modified forms of the invention employing dilerent coupling arrangements
  • Figs.' 6 8, inclusive schematicallyreprevsent additionally modied forms of the invention adapted to attenuate the translation of undesired harmonically related wave signals
  • Figs. 9y is a vcircuit diagram, partly schematic, representing a complete wave-signal system embodying the present invention in a particular form
  • Fig. la represents the equivalent circuit diagram of a portion of the Fig. l system
  • Figs. 2-5 inclusive
  • Figs.' 6 8, inclusive schematicallyreprevsent additionally modied forms of the invention adapted to attenuate the translation of undesired harmonically
  • a complete wave-signal system embodying the present invention in a particular utilized to couple an antenna-ground system l0, I I to a wave-signal apparatus i2 which may be a wave-signal transmitter or a wave-signal receiver.
  • the translating system includes three tandemarranged elongated conductors I3, Ill and I5, which may for example be of circular cross section spaced from each other less than one radian length at a given or operating wave length. This spacing of the conductors is such that the time of transit of electromagnetic energy moving from one conductor to the other is inappreciable.
  • the conductor spacing mentioned insures that the instantaneous values of current or voltage at corresponding points on adjacent pairs of conductors shall have no appreciable phase diilerence caused by virtue of the spacing. While the conductors are shown in Fig. 1 and in subsequent gures as linearly aligned, thus to provide an arrangement in which the conductors are coupled primarily in cascade, it is to be understood that the conductors may be arranged in nonlinear fashion where it is desired that coupling shall exist between each of three or more conductors to enable the attainment of a desired over-all bandpass characteristic.
  • the conductors I3, I4 and I5 are electrically connected at one end to the ground conductor II and are enclosed within a wave-signal shield, indicated by the broken line I6, to minimize the direct pickup or radiation of wave-signal energy.
  • a wave-signal shield does not have to be an enclosure, but may be only a ground plane near the conductors and parallel to the axes thereof.
  • the preferred shield is a rectangular box with its minimum dimension normal to a plane which includes the conductor axes.
  • Each conductor has an electrical length equal to an odd number of quarterwave lengths at the given operating wave length so that each is adapted to develop by resonance at approximately the given wave length a standing wave therealong.
  • conductors I3, I4 and I5 have with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at the operating wave length and are axially so positioned and at least partially exposed with relation to one another that the portions have opposing coupling therebetween caused by the electric and magnetic elds developed thereby and the standing waves developed along their parallel portions have at adjacent points on the conductors the same space-phase relationship.
  • the standing waves of current along these conductors have maximum values in the region of the ground conductor I I so that the maximum magnetic fields developed in the intervening space between the conductors have maximum values in this region.
  • the translating system includes a conductive grounded electromagnetic-shielding member I1, which may comprise a sheet of conductive material, positioned in the region of the predominant magnetic eld between the pair of conductors I3 and I4 and a similar conductive coupling member I8 positioned in the region of the predominant magnetic eld of the pair of conductors I4 and I5.
  • These coupling members are thus arranged unequally to disturb, over a distance less than one-half the length of the parallel portions of the conductors, the opposing coupling between the conductors caused by the electric and magnetic elds developed by the stand 4 ing waves of current and potential therealong.
  • the antenna I0 is coupled to a point on the conductor I3 spaced from its grounded end while the wave-signal apparatus I2 is coupled to a point on the conductor I5 spaced from the grounded end of the latter.
  • the conductors I3, I4 and I5 operate as resonant circuits inductively coupled in pairs in tandem relationship and providing a selective band-pass lter which couples the antenna system I0, II and the wave-signal apparatus I2.
  • Applicant has found that in the absence of the coupling members Il and I8, conductors having the length and spacing specified above remain entirely uncoupled with relation to one another. This is because each pair of the conductors is inductively coupled by the magnetic elds developed bythe standing waves of current along the conductors, but is also capacitively coupled by the electric fields developed along the conductors by the standing waves of potential.
  • inductive and capacitive couplings are equal, as will presently be explained in greater detail, and oppose one another so that the net coupling between the conductors is zero.
  • the coupling members Il and I8 unequally disturb the opposing couplings .between the individual pairs of conductors to effect coupling thereof by an excess of one kind of inductive or capacitive coupling develozped in the intervening space between the paral lel portions or" the conductors.
  • the coupling members I7 and I8 are of conductive material completely to shield one conductor from the other over the length of the coupling member, and are located in a region of predominant inductive coupling, it will be apparent that the inductive coupling between the conductors is reduced v/ithout any material reduction of the capacitive coupling therebetween so that the conductors are coupled by a net excess cf capacitive coupling. It will be apparent that the extent to which any pair of adjacent conductors is coupled is thus dependent upon the length of the intervening coupling member since this determines the extent to which the inductive coupling between the pair of conductors is reduced.
  • Fig. la shows the equivalent circuit diagram of a wave-signal translating system utilizing only two conductors.
  • the lumped inductors L represent the effective values of the distributed inductances of each conductor.
  • the lumped inductor Le represents the effective value of the distributed inductive coupling between the conductors.
  • the condensers C and Ce represent respectively the effective values of the distributed capacitances of either conductor to the wave-signal shield and the distributed capacitive coupling between the conductors.
  • each conductor essentially is a resonant circuit and that the two resonant circuits thus provided are coupled by inductive coupling Le and capacitive coupling Cc.
  • the two circuits are provided with parallel resonant lines as in Fig. 1 and where the coupling members il and I8 of Fig. l are omitted, it has been proven theoretically and verified experimentally that the inductive coupling Le and the capacitive coupling Cc are equal but oppose one another so that the inductive and capacitive couplings between the circuits cancel out.
  • the second typical way of unequally disturbing the inductive and capacitive couplings betweengthe conductors is by the use of a shield which modifies one kind of coupling more than the other and is positioned between the conductors at a region where it disturbs the balance of coupling.
  • Fig. 2 schematically represents an arrangement in which the balance of coupling is disturbed in the manner last mentioned.
  • the inductive coupling between the conductors I3 and I4 is increased by a conductor 20 connected between the conductors I3 and il at a point near to but spaced from their grounded ends, the conductors I4 and I5 being similarly coupled by a conductor 2l similarly connected and arranged.
  • the conductors 2i! and ZI near the grounded ends of the conductors I S, I4 and I5
  • they are positioned in the regions of the predominant magnetic fields developed in the intervening spaces between the conductors and thus eiTect an increase of the inductive coupling between the conductors while at the same time having substantially no effect on. the capacitive coupling.
  • Fig. 3 schematically represents a wave-signal translating system embodying a modied form of the invention wherein a pair of conductive grounded coupling members 23 and 24 are inserted between respective pairs I3, I4 and I4,I5 of the elongated conductors in the regions thereof where the predominant capacitive fields exist therebetween. That is, the standing waves of potential developed along the conductors I3, I4 and l5 have maximum amplitudes at the open ends of the conductors so that the capacitive c ouplings between the conductors are predominant in this region.
  • the effect of the coupling members 23 and 2li is to reduce the capacitive couplings without appreciably changing the value of the inductive couplings primarily existing between the conductors near their grounded ends.
  • the coupling members 23 and 24 of the instant arrangement may comprise either solid sheets of conductive material or may comprise a Faraday shield, the latter being arranged to modify only the capacitive coupling and having no appreciable eiect on any inductive coupling which may exist between the conductors near their open ends.
  • Fig. 4 represents a wave-signal translating system in which the capacitive couplings between the conductors I3, I4 and I5 are increased ,by the provision of coupling condensers 26 and ⁇ 2'I which are connected between the open ends of the respective pairs of conductors I3, Id and I4, I5.
  • Fig. 5 schematically represents a similar arrangement in which the capacitive couplings between the conductors are increased by the provision of small conductive plates 2S electrically connected to the ends of the conductors.
  • the conductors may tend to develop along eachthereof, in addition to a standing wave of the desired resonant wave length, undesirable standing waves harmonically related to the desired resonant standing waves. From what has been said before, it will be apparent that the conductors remain uncoupled for such harmonically related standing waves where the lengths of the conductors which are exposed to one another Vare an integral number of quarter-wave lengths at the harmonically related standing waves and where Vthey have a spacing less than one radian length at the wave length of the latter. Advantage may be taken of this fact to provide a translating system which translates a wave signal of the resonant wave length but which attenuates wave signals having a harmonically related wave length.
  • Fig. 6 schematically represents a translating system of this type.
  • Broken-line curve A represents a standing wave of potential of the desired resonant wave length developed along the conductors I3, I4 and I5 while broken-line curve B represents a third-harmonic standing wave of potential developed along the conductor I3.
  • the conductors I3, I4 and I5 of the present arrangement preferably have a spacing less than one radian length of the third-harmonic standing wave although substantial attenuation of the third harmonic is effected even for somewhat larger spacings.
  • Coupling condensers 26 and 2'! are connected between the conductors at a point approximately two-thirds of their length as measured from their grounded ends.
  • FIG. '7 A modified form of wave-signal translating system which possesses the harmonic-suppression characteristic last described is schematically represented in Fig. '7.
  • a conductive grounded coupling member I'I is positioned between the conductors I3 and I4 and extends over a distance thereof equal to a quarter-wave length of the undesired harmonically related standing wave represented by broken-line curve B.
  • the conductors I3 and I4 have an exposed length equal to one-half wave length of the harmonically related standing wave and thus are not coupled for wave signals of this wave length or for wave signals which are multiples of this har- Inonic wave length.
  • these conductors are coupled for wave signals having the desired resonant Wave length.
  • the conductors I4 and I5 are shown as being inductively coupled by a conductive grounded coupling member 24, as in the Fig. 3 arrangement, for a K standing wave of the resonant wave length. They remain uncoupled, however, for a second-harmonic standing wave, represented by the brokenline curve C, by virtue of the fact that the coupling member 24 extends between the conductors I4 and I5 for a distance equal to one quarterwave length of the second-harmonic wave thus to leave these conductors exposed to one another only over a quarter-wave length of the secondharmonic Wave.
  • harmonic attenuation is effective for harmonic Wave lengths, such as the fourth, sixth or eighth harmonic, which are multiples of the second-harmonic wave.
  • a wave signal having the desired resonant wave length is thus translated by the system while wave signals having an undesired third-harmonic wave length are substantially attenuated by the coupled conductors I3 and I4 and wave signals having an undesired secondharmonic wave length are substantially attenuated by the coupled conductors I4 and I5.
  • FIG. ⁇ 8 A wavesignal translating system adapted to suppress four such harmonically related Wave signals is shown in Fig. ⁇ 8 which includes five tandem-arranged elongated conductors I3, I4, I5, and 3I with four intervening conductive coupling members Il, I8, 32 and 33. Each of the coupling members has a length equal to a quarter- Wave length of an individual undesirable harmonically related standing wave to be attenuated.
  • the conductors I3 and I4 with their intervening coupling member I'I may attenuate a second-harmonic and multiples of a second-harmonic standing wave
  • the conductors I4 and I5 may attenuate a third-harmonic and multiples of a third-harmonic standing wave
  • the conductors I5 and 30 a ifth-harmonic and multiples of a fth-harmonic standing wave
  • the conductors 30 and SI a seventh-harmonic and multiples of a seventh-harmonic standing Wave. All of the conductors are capacitively coupled, however, for the desired wave signal of resonant wave length so that such Wave signals are freely translated by the translating system.
  • Fig. 9 illustrates a wave-signal translating system embodying the present inventioninamodied form adapted to be tuned over a range of wave-signal wave lengths.
  • the instant arrangement is essentially similar to that of Fig. 1, similar elements being designated by similar reference numerals and analogous elements by similar reference numerals primed, except that the elongated conductors I3', I4 and I5' have an electrical length equal to slightly more than one-half wave length at the longest Wave length of any wave signal to be translated by the system.
  • the conductors are electrically connected at both of their ends to the wave-signal shield I6',
  • An apertured diaphragm 35 of conductive material conductively but slidably engages around its periphery the inner walls of the wave-signal shield I6' and is provided with apertures having resilient inturned serrated edges which conductively but slidably engage the conductors I3, I4 and I5.
  • a manually adjustable member 36 is mechanically connected to the diaphragm 35 to move the latter within the wave-signal shield I6 for purposes of adjusting, in well-known manner, the resonant lengths of the conductors I3', I4 and I5.
  • a coupling loop 3l is provided by which t0 couple the conductor I3 to a rst external wave-signal translating circuit and a similar coupling loop 38 is provided to couple the conductor I5 to another external wave-signal translating circuit. Except for the adjustable tuning feature, itself Well known in the art, the operation of this modied form of the invention is essentially similar to that of Fig. l and will not be repeated.
  • FIG. 10 A somewhat similar tunable translating system embodying an additionally modified form of the invention is shown in Fig. 10.
  • the present arrangement is essentially similar to that of Fig. 9, similar elements being designated by similar reference numerals and analogous elements by similar reference numerals double primed.
  • the conductive diaphragm 35 of the present arrangement is xedly positioned within the wave-signal shield I6" and the elongated conductors I3, I4" and I5 are mechanically connected to a manually adjustable member 36 for movement in unison through the apertures of the diaphragm to tune the conductors to resonance in Well-known manner.
  • the conductive coupling members Il and I8 also movably extend through apertures in the diaphragm 35", in conductive engagement therewith, and are mechanically connected to a second manually adjustable control 4i] for movement in unison to adjust the extended lengths of the coupling members between the conductors I3, I4 and I5". Adjustment of the coupling members Il and I8" may be desirable in some applications in order that the extent of coupling between the conductors I3, I4 and I5 may be varied at will or in order selectively to eiect the attenuation of one or more undesirable harmonically related Wave signals.
  • the operation of this modified form of the invention is otherwise essentially similar to that of Fig. 1 and will not be repeated.
  • a wave-signal translating system embodying the invention involves only a very simplified and inexpensive construction and may readily be designed or adjusted to have any desired band-pass translation characteristic, as by suitable choice of the number of coupled stages thereof and the extent to which the stages are coupled. Additionally, a translating system embodying the invention has the monically related wave signals may be substantially attenuated. There is the further advantage that the translating system of the present' invention may readily be constructed either of the fixed-tuned or adjustably tuned type and, when of the latter type, may have a band-pass characteristic which may be maintained substantially constant over its tuning range.
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said Wave length and being axially so positioned and at least partially exposed with rela-tion to one another that said portions have opposing coupling therebetween caused by the electric and magnetic elds developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same spacephase relationships, and a coupling member disposed between said portions of said conductors and proportioned unequally to disturb said opposing couplings over a distance less than one-halfl the length of said portions, whereby said cond-uctors are coupled by an excess of one kind of the inductive and capacitive coupling developed in the intervening space between said portions thereof.
  • a Wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same spacephase relationships, and a conductive coupling member disposed between said portions of said conductors and proportioned unequally to disturb said opposing couplings over a distance less than one-half the length of said portions, whereby said conductors are coupled by an excess of one kind of inductive and capacitive coupling developed in the intervening space between said portions thereof.
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given Wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number oi quarter-wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space phase relationships, and a conductive grounded shielding member disposed between said portions of said conductors and proportioned unequally to disturb said opposing couplings overa distance less than one-half the length of said portions, whereby said conductors are coupled by an excess of one kind of inductive and capacitive coupling developed in the intervening space between said portions thereof.
  • a Wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said given Wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused yby the electric and magnetic elds developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same spacephase relationships, and a conductive coupling member disposed between said portions of said conductors in the region of predominately magnetic elds thereof and proportioned Iunequally to disturb said opposing couplings over ⁇ a distance less ⁇ than one-half the length of said portions, whereby said conductors are coupled by an excess of one kind of inductive and capacitive coupling developed in the intervening space between said portions thereof.
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a, given wave length :and adapted to develop by resonance at approximately said given wave length a standing Wave along each thereof, said conductors having With one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said -given Wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, and a, conductive coupling mem-ber disposed between said portions of said conductors in the region of the predominant magnetic fields thereof and proportioned to reduce over a distance less than one-half the length of said portions the inductive component of the opposing coupling therebetween, whereby said conductors are coupled by an excess of capacitive coupling developed in the intervening space between said portions thereof.
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonancey at approxi-v mately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-Wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, and a conductive coupling member disposed between said portions of said conductors in the region of the predominant magnetic fields thereof and proportioned to increase over a distance less than one-half the length of said portions the inductive component of said opposing coupling, whereby said conductors are coupled by an excess of inductive coupling developed in the intervening space between said portions thereof.
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by Vthe electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, and a capacitive coupling member disposed between said portions of said conductors in the region of the predominant electric elds thereof and proportioned to increase over a distance less than one-half the length of said portions the capacitive component of said opposing coupling between said portions,
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof but tending also to develop along each thereof an undesirable Standing wave harmonically related to said first-mentioned standing waves, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, and a coupling member disposed between said portions of said conductors and proportioned unequally to disturb over a predetermined length of said conductors said opposing coupling between said portions, said length being selected t0 disturb substantially equally the opposing coupling between said portions caused by the electric and magnetic fields developed by said harmonically related standing waves
  • a wave-sign-al translating system comprising, at least three tandem-related elongated conductors spaced from each other less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof but tending also to develop along each thereof a plurality of undesirable standing waves harmonically related to said first-mentioned standing waves, pairs of said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said given wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic elds developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, and a coupling member disposed between said portions of each said pair of said conductors and proportioned unequally to disturb over a predetermined length of said conductors of said each pair the opposing coupling between said portions, said length for each said pairs of conductors being
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, a coupling member disposed between said portions of said conductors and proportioned unequally to disturb over a distance less than one-half the length of said portions the opposing coupling between said portions, whereby said conductors are coupled by an excess of one kind of the inductive and capacitive coupling developed in the intervening space between said portions thereof, and wave-signal Shielding men OI Substantially reducing the ra-
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths at said wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magnetic fields developed thereby and the standing Waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, a coupling member disposed between said portions of said conductors and proportioned unequally to disturb over a distance less than one-half the length of said portions the opposing coupling between said portions, whereby said conductors are coup1ed by an excess of one kind of the inductive and capacitive coupling developed in the intervening space between said portions thereof, and w-ave-signal shielding means providing at least one conductive surface
  • a wave-signal translating system comprising, a pair of elongated conductors spaced less than one radian length at a given wave length and adapted to develop by resonance at approximately said given wave length a standing wave along each thereof, said conductors having with one another approximately parallel portions of length approximately equal to an integral number of quarter-wave lengths'at said wave length and being axially so positioned and at least partially exposed with relation to one another that said portions have opposing coupling therebetween caused by the electric and magneticields developed thereby and the standing waves developed along said portions have at adjacent points on said conductors approximately the same space-phase relationships, a coupling member disposed between said portions of said conductors and proportioned unequally to disturb over a distance less than one-half the length of said portions the opposing coupling between said portions, Whereby said conductors are coupled by an excess of one kind of the inductive and capacitive coupling developed in the intervening space between said portions thereof, and wave-signal shielding means enclosing said conductors and including

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US627473A 1945-11-08 1945-11-08 Wave-signal translating system for selected band of wave-signal frequencies Expired - Lifetime US2527664A (en)

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Application Number Priority Date Filing Date Title
US627473A US2527664A (en) 1945-11-08 1945-11-08 Wave-signal translating system for selected band of wave-signal frequencies
FR939388D FR939388A (fr) 1945-11-08 1946-10-21 Dispositif de transmission des oscillations à haute fréquence
GB32744/46A GB627870A (en) 1945-11-08 1946-11-04 Wave-signal filter system
DEH5510A DE825102C (de) 1945-11-08 1950-09-23 Leitungsanordnung fuer hochfrequente Schwingungen

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Cited By (6)

* Cited by examiner, † Cited by third party
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US2594037A (en) * 1946-08-28 1952-04-22 Rca Corp Ultrahigh-frequency filter
US2760169A (en) * 1951-05-23 1956-08-21 Itt Microwave filters
EP3079198A1 (de) * 2015-04-09 2016-10-12 Alcatel Lucent Resonatoranordnung und filter
CN107210505A (zh) * 2014-12-15 2017-09-26 康普公司意大利有限责任公司 具有相互补偿的电感和电容耦合的串联的滤波器
US20220052430A1 (en) * 2020-08-13 2022-02-17 Cyntec Co., Ltd. Dielectric filter with multilayer resonator
US20220190455A1 (en) * 2019-04-04 2022-06-16 Nokia Solutions And Networks Oy Resonator and filter

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DE1074092B (de) * 1955-12-28 1960-01-28 Siemens & Halske Aktiengesellschaft, Berlin und München Verzögerungsleitung mit Filtercharakteristik für Wanderfeldröhren
JPS5568702A (en) * 1978-11-20 1980-05-23 Oki Electric Ind Co Ltd Dielectric filter
FR2653597B1 (fr) * 1989-10-20 1992-01-24 Alcatel Transmission Filtre de bande pour hyperfrequences du type filtre en peigne.

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US2410656A (en) * 1943-06-24 1946-11-05 Rca Corp Tuned ultra high frequency transformer
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US2220922A (en) * 1938-03-17 1940-11-12 Rca Corp Electrical wave filter
US2194543A (en) * 1938-04-13 1940-03-26 Bell Telephone Labor Inc High frequency network structure
US2419557A (en) * 1943-03-12 1947-04-29 Bell Telephone Labor Inc Branching circuits
US2410656A (en) * 1943-06-24 1946-11-05 Rca Corp Tuned ultra high frequency transformer
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US2594037A (en) * 1946-08-28 1952-04-22 Rca Corp Ultrahigh-frequency filter
US2760169A (en) * 1951-05-23 1956-08-21 Itt Microwave filters
US11024931B2 (en) 2014-12-15 2021-06-01 Commscope Italy, S.R.L. In-line filter having mutually compensating inductive and capacitive coupling
US11757164B2 (en) 2014-12-15 2023-09-12 Commscope Italy S.R.L. In-line filter having mutually compensating inductive and capactive coupling
CN107210505A (zh) * 2014-12-15 2017-09-26 康普公司意大利有限责任公司 具有相互补偿的电感和电容耦合的串联的滤波器
US10236550B2 (en) * 2014-12-15 2019-03-19 Commscope Italy S.R.L. In-line filter having mutually compensating inductive and capacitive coupling
US10658722B2 (en) 2014-12-15 2020-05-19 Commscope Italy S.R.L. In-line filter having mutually compensating inductive and capacitive coupling
CN107210505B (zh) * 2014-12-15 2020-08-07 康普公司意大利有限责任公司 具有相互补偿的电感和电容耦合的线性的滤波器
WO2016162426A1 (en) * 2015-04-09 2016-10-13 Alcatel Lucent A resonator assembly and filter
EP3079198A1 (de) * 2015-04-09 2016-10-12 Alcatel Lucent Resonatoranordnung und filter
US20220190455A1 (en) * 2019-04-04 2022-06-16 Nokia Solutions And Networks Oy Resonator and filter
US20220052430A1 (en) * 2020-08-13 2022-02-17 Cyntec Co., Ltd. Dielectric filter with multilayer resonator
US11862835B2 (en) * 2020-08-13 2024-01-02 Cyntec Co., Ltd. Dielectric filter with multilayer resonator

Also Published As

Publication number Publication date
FR939388A (fr) 1948-11-12
DE825102C (de) 1951-12-17
GB627870A (en) 1949-08-17

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