EP1848059B1 - Non-reciprocal circuit device, communication equipment using the same, and method for assembling the non-reciprocal circuit device - Google Patents

Non-reciprocal circuit device, communication equipment using the same, and method for assembling the non-reciprocal circuit device Download PDF

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Publication number
EP1848059B1
EP1848059B1 EP20070251617 EP07251617A EP1848059B1 EP 1848059 B1 EP1848059 B1 EP 1848059B1 EP 20070251617 EP20070251617 EP 20070251617 EP 07251617 A EP07251617 A EP 07251617A EP 1848059 B1 EP1848059 B1 EP 1848059B1
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EP
European Patent Office
Prior art keywords
reciprocal circuit
circuit device
lid member
component assembly
top plate
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 - Fee Related
Application number
EP20070251617
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German (de)
English (en)
French (fr)
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EP1848059A1 (en
Inventor
Akihito TDK Corporation Watanabe
Yoshitsugu TDK Corporation Watanabe
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TDK Corp
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TDK Corp
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Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/38—Circulators
    • H01P1/383—Junction circulators, e.g. Y-circulators
    • H01P1/387—Strip line circulators

Definitions

  • the present invention relates to a non-reciprocal circuit device, a communication equipment using the same, and a method for assembling the non-reciprocal circuit device.
  • non-reciprocal circuit devices for mobile communications have been rapidly developed to have higher frequency from 2 GHz to 5 GHz.
  • direct-current magnetic field to be applied to a gyromagnetic component decreases with increasing frequency, which reduces the size of a gyromagnetic component assembly including a permanent magnet, a magnetic pole plate, and the gyromagnetic component and also simplifies the structure of a holder housing the gyromagnetic component assembly.
  • the complicated fitting mechanism increases the number of processing steps, which leads to higher cost, and also increases the number of assembling steps, which reduces assembling yield.
  • the gyromagnetic component assembly is usually housed in the casing member prior to the step of assembling the lid member to the casing member. If it takes a long time to assemble the lid member, accordingly, there is a high possibility that the gyromagnetic component assembly housed in the casing member will be displaced during that time to reduce non-reciprocal circuit characteristics. Particularly, considering that the gyromagnetic component assembly has to be reduced in size and weight with increase in frequency, the problem of characteristic degradation due to such displacement is important.
  • US Patent No. 6,337,607 B1 discloses a holder whose lid member, which is to be coupled to a casing member, has a saucer-like curved top plate.
  • This curved top plate protrudes into a housing space, making the distance between a bottom plate of the casing member and the curved top plate smaller than the thickness of a gyromagnetic component assembly.
  • 6,337,607 B1 cannot follow such a change in thickness of the gyromagnetic component assembly, and therefore, a variety of holders of different thicknesses are required for different produce, leading to higher cost.
  • the curved top plate is also disadvantageous in reducing the height.
  • US Patent No. 6,504,445 B1 discloses a holder whose casing member has flare slots, wherein engaging teeth of a lid member engage the flare slots for coupling the casing member and the lid member.
  • the circuit element includes an assembly having a gyromagnetic component, a holder and a support member.
  • the assembly is accommodated in the holder.
  • the support member has a holder insertion hole which is opened on at least one surface.
  • the holder has a bottom outer surface inserted in the holder insertion hole.
  • the present invention provides a non-reciprocal circuit device comprising a holder and a gyromagnetic component assembly.
  • the holder includes a casing member and a lid member.
  • the casing member has a bottom plate and a plurality of side walls spaced apart from each other and rising from a periphery of the bottom plate, each side wall having a depression in an edge opposed to another side wall in a direction of the periphery.
  • the lid member has a top plate and a plurality of side walls spaced apart from each other and hanging from a periphery of the top plate, each side wall having a projection on an edge opposed to another side wall in a direction of the periphery.
  • the lid member is coupled to the casing member with the projection fitted in the depression.
  • the gyromagnetic component assembly is housed in the holder between the top plate and the bottom plate.
  • the holder for housing the gyromagnetic component assembly has an improved structure.
  • a top plate-side end face of the projection is at least partially pressed against an opposing inner face of the depression.
  • the contact of the lid member with the casing member can be improved.
  • the electrical connection between the lid member and the casing member has an improved reliability.
  • the lid member is pressed by the gyromagnetic component assembly housed in the holder.
  • the gyromagnetic component assembly can be repulsively pressed by using the pressure applied from the gyromagnetic component assembly, thereby eliminating gaps between components constituting the gyromagnetic component assembly to improve the reproducibility of intended non-reciprocal circuit characteristics.
  • applying a pressure to the gyromagnetic component assembly results in stabilizing the position of the gyromagnetic component assembly inside the holder, reducing the variance of characteristics.
  • each side wall of the casing member may have a plurality of depressions spaced apart in a thickness direction of the non-reciprocal circuit device (along which the side walls rise from the bottom plate).
  • each side wall of the lid member may have a plurality of projections spaced apart in the thickness direction and fitted in the plurality of depressions, respectively. This enhances the coupling strength between the lid member and the casing member of the holder and also keeps constant the pressure from the lid member to the gyromagnetic component assembly to improve non-reciprocal circuit characteristics.
  • the projection is fitted in the depression for mechanical coupling between the lid member and the casing member.
  • This assembling method secures all the advantages of the non-reciprocal circuit device according to the present invention and also avoids the problem that the gyromagnetic component assembly housed in the holder would be displaced during the assembly.
  • the reproducibility of non-reciprocal circuit characteristics can be improved to prevent the variance among products.
  • a non-reciprocal circuit device As has been described above, a non-reciprocal circuit device, a communication equipment using the same, and a method for assembling the non-reciprocal circuit device have at least one of the following advantages:
  • Figs. 1 to 4 illustrate a non-reciprocal circuit device including a gyromagnetic component assembly 1, for example, such as a distributed parameter type circulator which may be used in mobile communication equipments (e.g., cellular phones and radios) and communication equipments for their base stations.
  • the gyromagnetic component assembly 1 has a permanent magnet 11, a shield 12, an upper magnetic pole plate 13, a gyromagnetic component 10, and a lower magnetic pole plate 17, which are stacked in the mentioned order and integrated together preferably through a conductive adhesive (not shown).
  • a conductive adhesive not shown
  • the shield 12 may be formed of a conductor plate punched out from a copper plate having a thickness of approximately 0.1 to 0.2 mm and used for strengthening and stabilization of a ground electrode.
  • the shield 12 illustrated in Figs. 1 to 3 has a discoid shape whose diameter is several-ten mm, approximately as large as the lower surface of the permanent magnet 11.
  • the permanent magnet 11 has a cylindrical shape whose diameter is several-ten mm and is laid on the shield 12 to apply a magnetic field to the gyromagnetic component 10 beneath the shield 12.
  • the upper magnetic pole plate 13 may be formed of a conductor plate punched out from an iron plate having a thickness of approximately 0.1 to 0.3 mm and has a discoid shape whose diameter is several-ten mm.
  • the lower magnetic pole plate 17 may be formed of a conductor plate punched out from an iron plate having a thickness of approximately 0.3 to 1.0 mm and has a discoid shape whose diameter is several-ten mm.
  • the upper magnetic pole plate 13 and the lower magnetic pole plate 17 are used for homogenization and stabilization of a direct-current magnetic field.
  • the gyromagnetic component 10 further includes an upper ferrite substrate 14, a central conductor 15 and a lower ferrite substrate 16, which are stacked in the mentioned order and integrated together preferably through a conductive adhesive (not shown).
  • the upper ferrite substrate 14 is preferably formed of a soft. magnetic material such as yttrium/iron/garnet (YIG) into a discoid shape having a diameter of several-ten mm and a thickness of approximately 1.0 mm.
  • the lower ferrite substrate 16 is preferably formed of a soft magnetic material such as yttrium/iron/garnet (YIG) into a discoid shape having a diameter of several-ten mm and a thickness of approximately 1.0 mm.
  • the central conductor 15 is preferably a conductor plate obtained by processing a copper plate having a thickness of approximately 0.3 to 1.0 mm and has a base body portion 150 and first to third lead terminals 151 to 153 protruding from an outer periphery of the base body portion 150.
  • the base body portion 150 is formed into a circular shape having a diameter of several-ten mm, approximately as large as the plate surface of each of the upper ferrite substrate 14 and the lower ferrite substrate 16.
  • the first to third lead terminals 151 to 153 protruding from the base body portion 150 are each bent in the vicinity of an upper surface edge of the lower ferrite substrate 16.
  • a holder for holding the gyromagnetic component assembly 1 has an improved structure.
  • a holder illustrated in Figs. 1 to 4 includes a casing member 3 and a lid member 4.
  • the casing member 3 is an approximately cylindrical bottom-closed member or a container like member which defines within a space 30 for housing the gyromagnetic component assembly 1.
  • the shape of the casing member 3 may vary depending on the shape of the gyromagnetic component assembly 1 to be housed therein, for example, into an approximately rectangular or polygonal tubular shape instead of the illustrated approximately cylindrical shape.
  • the casing member 3 is preferably formed of a magnetic metal material such as iron.
  • the casing member 3 will be descried in detail below.
  • the casing member 3 has the housing space 30 defined by a plurality of (e.g., three in the present embodiment) side walls 31 to 33 and a bottom plate 34.
  • the side walls 31 to 33 are spaced apart from each other and rise from the periphery of the bottom plate 34 in a thickness direction H, wherein an open end face 35 is defined by the upper end edges of the side walls 31 to 33.
  • the side walls 31 to 33 are each provided with first and second depressions 36, 37 in both side edges opposed to another side wall in a peripheral or lateral direction perpendicular to the thickness direction H.
  • the first depression 36 has an opening in the side edge and is preferably in the form of a cut passing through each side wall 31 to 33 from the outer surface to the inner surface.
  • inner faces 361, 362 opposing each other in the thickness direction H each extend perpendicular to the thickness direction H. It should be noted that the first depression 36 is not necessarily required to pass through the side wall but may have a bottom on either of the inner and outer surfaces.
  • first depression 36 is spaced a distance T1 apart from the open end face 35 in the thickness direction H. That is, on the side of the inner face 361 of the first depression 36, there is secured a strip for the distance T1. Between the adjacent side walls 31 to 33, preferably, each first depression 36 is located at the same level as another opposing first depression 36 with respect to the thickness direction H.
  • the second depression 37 may have the same configuration as the first depression 36. To describe it briefly, the second depression 37 has an opening in the side edge and is in the form of a cut passing through each side wall 31 to 33 from the outer surface to the inner surface. In this cut-out shape, inner faces 371, 372 opposing each other in the thickness direction H each extend perpendicular to the thickness direction H.
  • each second depression 37 is spaced a distance T1 apart from the inner face 362 of the first depression 36 in the thickness direction H. That is, on the side of the inner face 371 of the second depression 37, a strip for the distance T1 is secured between the inner faces 371, 362. Between the adjacent side walls 31 to 33, preferably, each second depression 37 is located at the same level as another opposing second depression 37 with respect to the thickness direction H.
  • the side edges opposing each other in the peripheral direction define an opening 38 through which a part (e.g., the first to third lead terminals 151 to 153) of the gyromagnetic component assembly 1 is to be led out of the housing space 30.
  • the casing member 3 has a coupling protrusion 340 on the side of the bottom plate 34.
  • the coupling protrusion 340 is formed by extending the periphery of the bottom plate 34 to protrude outwardly (or radially) from the opening 38.
  • the lower surface of the bottom plate 34 may be used as a mounting surface to be applied to a circuit board.
  • the lid member 4 is an approximately cylindrical bottom-closed member or a container-like member and used as a lid for closing the housing space 30 in combination with the casing member 3.
  • the shape of the lid member 4 may vary depending on the shape of the casing member 3, for example, into an approximately rectangular or polygonal tubular shape instead of the illustrated approximately cylindrical shape.
  • the lid member 4 is preferably formed of a magnetic metal material such as iron.
  • the lid member 4 will be described in detail below.
  • the lid member 4 has a plurality of (e.g., three in the present embodiment) side walls 41 to 43 and a top plate 44.
  • the diameter and profile of the top plate 44 are determined to permit the top plate 44 to fit in the open end face 35 of the casing member 3.
  • the top plate 44 is shaped slightly smaller than the open end face 35. With this configuration, since the top plate 44 can be fitted in the open end face 35, the non-reciprocal circuit device can be reduced in height for the thickness of the top plate 44.
  • the side walls 41 to 43 which project from the periphery of the top plate 44 at spaced intervals, are folded outside the open end face 35 to hang down in the thickness direction H. Moreover, the side walls 41 to 43 are each provided with a projection 46 on both side edges opposed to another side wall in the peripheral direction.
  • the projection 46 has end faces 461, 462 opposing each other in the thickness direction H and inclined toward the top plate 44. In other words, the projection 46 has a rising angle (or inclination) with respect to the first depression 36 or the second depression 37.
  • the lid member 4 is mechanically coupled with the casing member 3 to close the housing space 30 with the top plate 44 by fitting the projections 46 in the first depressions 36. That is, when the lid member 4 is coupled with the casing member 3, the holder provides the closed housing space 30 between the opposing surfaces of the top plate 44 and the bottom plate 34.
  • the top plate 44 applies a pressure toward the bottom plate 34 (or downward load).
  • the lid member 4 and the casing member 3 constituting the holder are coupled such that the end face 461 of the projection 46 and the inner face 361 of the first depression 36 are at least partially pressed against each other.
  • sufficient mechanical coupling strength can be ensured for the holder to maintain the gyromagnetic component assembly 1 within the housing space 30.
  • the strip for the distance T1 is left on the side of the inner face 361.
  • the foregoing pressure from the gyromagnetic component assembly 1 can be supported by the strip for the distance T1. This avoids the problem that the first depression 36 would be deformed by the pressure from the lid member 1, thereby enhancing the mechanical coupling strength of the holder.
  • each first depression 36 is preferably located at the same level as another opposing first depression 36 with respect to the thickness direction H. With this configuration, the pressure from the gyromagnetic component assembly 1 can be uniformly dispersed through a plurality of the first depressions 36, and in turn, a uniform pressure can be applied to the gyromagnetic component assembly 1.
  • the second depression 37 may also be used for fitting with the projection 46 in the same manner as the first depression 36. Therefore, a fitting mechanism with the use of the second depression 37 and its advantages will be further described with reference to Figs.5 to 7 .
  • Figs. 5 to 7 the components similar to those illustrated in Figs. 1 to 4 will be denoted by the same reference symbols.
  • Figs. 5 to 7 illustrate a non-reciprocal circuit device whose feature resides in that in the holder, the projection 46 of the lid member 4 is fitted in the second depression 37.
  • the second depression 37 is spaced a distance T1 apart from the inner face 362 of the first depression 36 in the thickness direction H. That is, on the side of the inner face 371 of the second depression 37, a strip for the distance T1 is secured between the inner faces 371, 362. With this configuration, the pressure from the gyromagnetic component assembly 1 can be supported by the strip for the distance T1, which avoids the problem that the second depression 37 would be deformed by the pressure from the lid member 4.
  • the thickness and capacity of the holding space 30 can be adjusted by selecting one of the first and second depressions 36, 37 for fitting of the projection 46 so as to follow a change in thickness of the gyromagnetic component assembly 1.
  • the upper magnetic pole plate 13 illustrated in Figs. 2 and 3 is omitted from the non-reciprocal circuit device illustrated in Figs. 5 to 7 to reduce the height of the gyromagnetic component assembly 1 for the upper magnetic pole plate 13.
  • the degradation of non-reciprocal circuit characteristics can be avoided by replacing the permanent magnet 11 of the gyromagnetic component assembly 1 with a metal magnet of a conductive magnetic material.
  • the gyromagnetic component assembly 1 changes (increases or decreases) in thickness.
  • the thickness of the gyromagnetic component assembly 1 to be used for the non-reciprocal circuit device tends to change for different products in accordance with their desired non-reciprocal circuit characteristics.
  • conventional holders cannot follow a change in thickness of the gyromagnetic component assembly 1, and therefore, a variety of holders of different thicknesses are required for different products, which decreases the productivity and leads to higher cost.
  • the thickness and capacity of the holding space 30 can he adjusted by selecting one of the first and second depressions 36, 37 for fitting of the projection 46 so as to follow a change in thickness of the gyromagnetic component assembly 1.
  • This means that a single holder is applicable to a variety of gyromagnetic component assemblies 1 of different thicknesses, improving the usability of components.
  • the pressure applied from the lid member 4 to the gyromagnetic component assembly 1 can be adjusted when the thickness and capacity of the holding space 30 is adjusted by selecting one of the first and second depressions 36, 37 for fitting of the projection 46.
  • Figs. 8 to 18 are views for illustrating a method for assembling a non-reciprocal circuit device according to one embodiment of the present invention.
  • the components similar to those illustrated in Figs. 1 to 7 will he denoted by the same reference symbols.
  • the lid member 4 (see Figs. 1 to 7 ) and the casing member 3 (see Figs. 1 to 7 ) of the holder are manufactured by a process illustrated with Figs. 8 to 10 and a process illustrated with Figs. 11 and 12 , respectively.
  • the lid member manufacturing process After an assembly part, which is the lid member in a developed state as illustrated in Fig. 8 , is punched out from a magnetic metal plate such as an iron plate having a thickness of approximately 0.5 to 1.5 mm, the side walls 41 to 43 extending from the top plate 44 are folded to hang down in the thickness direction H, such as by presswork, as illustrated in Figs. 9 and 10 .
  • the projection 46 extends upward with their opposing end faces 461, 462 in the thickness direction H being inclined in a tapered manner at a rising angle ⁇ 1 toward the top plate 44.
  • the rising angle ⁇ 1 is preferably set in the range of 5 to 20 degrees and most preferably at approximately 15 degrees.
  • the side walls 31 to 33 extending from the bottom plate 34 are folded to rise up in the thickness direction H, such as by presswork, as illustrated in Fig. 12 .
  • the first depression 36 extends with their inner faces 361, 362 being in parallel with the peripheral direction perpendicular to the thickness direction H.
  • the lid member 4 and the casing member 3 obtained by the processes illustrated with Figs. 8 to 12 are arranged to oppose the inner surface of the top plate 44 to the inner surface of the bottom plate 34, and then, the top plate 44 is fitted in the open end face 35.
  • the gyromagnetic component assembly 1 which has been described hereinabove with reference to Figs. 1 to 4 , is previously housed in the housing space 30 of the casing member 3.
  • the projection 46 is positioned, for example, with respect to the first depression 36 with the top plate 44 being fitted in the open end face 35, as illustrated in Figs. 14 and 15 . Moreover, the projection 46 is fitted in the first depression 36 from the side of the outer periphery of the side walls 31 to 33 by applying a pressure F 1 for bending deformation.
  • the gyromagnetic component assembly 1. housed in the housing space 30 applies a pressure to the top plate 44 of the lid member 4 in the thickness direction H.
  • the projection 46 gradually deforms under the pressure, whereby the rising angle ⁇ 1 of the end face 461 illustrated in Fig. 14 decreases to a rising angle ⁇ 2 illustrated in Fig. 16 . If the end face 461 of the projection 46 are entirely pressed against the opposing inner face 361 of the first depression 36, for example, the rising angle ⁇ 2 will be approximately zero.
  • the gap G is left between the bottom plate 34-side end face 462 of the projection 46 and the opposing inner face 362 of the first depression 36.
  • the non-reciprocal circuit assembling method illustrated with Figs. 8 to 18 can prevent the variance of characteristics. For instance, if the lid member 4 were fitted in the casing member 3 in a rotary manner, as in conventional holders, the gyromagnetic component assembly 1 housed in the casing member 3 would be rotated by friction due to the rotary fitting of the lid member 4, thereby causing a problem of displacement as a cause of decreasing the reproducibility.
  • the projection 46 of the lid member 4 is inclined at the rising angle ⁇ 1 with respect to the first depression 36.
  • the thickness of the gyromagnetic component assembly 1 housed in the housing space 30 can be kept constant, for example, to stabilize the capacitance value. Also, the distance between the permanent magnet 11 and the gyromagnetic component 10 can be kept constant to stabilize the loss value.
  • Figs. 19 to 21 illustrate a non-reciprocal circuit device according to another embodiment of the present invention.
  • the components similar to those illustrated in Figs. 1 to 18 will be denoted by the same reference symbols.
  • the non-reciprocal circuit device illustrated in Figs. 19 to 20 is characterized in that the lid member 4 of the holder has a plurality of projections, i.e., first and second projections 46, 47.
  • the first projection 46 has the same configuration as the projection 46 illustrated in Figs. 1 to 18 and extends upward with their opposing end faces 461, 462 in the thickness direction H being inclined in a tapered manner toward the top plate 44.
  • the second projection 47 may have the same configuration as the first projection 46. As will be briefly described below, the second projection extends upward with their opposing end faces 471, 472 in the thickness direction H being inclined toward the top plate 44.
  • the first and second projections 46, 47 are spaced a distance T2 apart from each other in the thickness direction H. That is, the first and second projections 46, 47 adjacent each other in the thickness direction H provide a gap for the distance T2 between the end faces 471, 462.
  • the distance T2 between the adjacent first and second projections 46, 47 is approximately equal to or slightly larger than the distance T1 between the first and second depressions 36, 37 which are likewise adjacent each other (the distance T1 ⁇ the distance T2).
  • the first and second projections 46, 47 can be fitted in the first and second depressions 36, 37, respectively. Therefore, the mechanical coupling strength of the holder can be enhanced by increasing the number of couplings between the lid member 4 and the casing member 3.
  • Figs. 22 and 23 are enlarged views each illustrating a part of a non-reciprocal circuit device according to still another embodiment of the present invention.
  • the components similar to those illustrated in Figs. 1 to 21 will be denoted by the same reference symbols.
  • the position of the top plate 44 in the thickness direction H varies, for example, a distance T3 (the distance T1 - the distance T2) between the case where the first projection 46 is fitted in the first depression 36 ( Fig. 22 ) and the case where the second projection 47 is fitted in the second depression 37 ( Fig. 23 ).
  • the thickness and capacity of the holder can be fine-tuned within the range of the distance T3 and the pressure against the gyromagnetic component assembly 1 can also be controlled depending on the coupling relationships of the first and second projections 46, 47 with the first and second depressions 36, 37.
  • the present invention also provides a communication equipment which may be used as a base station, for example, and is characterized in that the non-reciprocal circuit device according to the present invention is employed in its necessary part such as a send unit.
  • Communication equipments using one of the non-reciprocal circuit devices described above with reference to Figs. 1 to 23 will be described below with reference to Figs. 24 to 26 .
  • Figs. 24 to 26 the components similar to those illustrated in Figs. 1 to 23 will be denoted by the same reference symbols.
  • the communication equipment illustrated in Fig. 24 is an embodiment where the non-reciprocal circuit device 9 described above with reference to Figs. 1 to 4 is surface-mounted on a circuit board 5. More specifically, the circuit board 5 includes a substrate 50 and ground electrodes 51.
  • the ground electrodes 51 are disposed on one surface of the substrate 50 around the openings 38.
  • the outer surface of the bottom plate of the casing member 3 is firmly fixed to one surface of the circuit board 5 through a conductive adhesive such as solder, and the terminals 151 to 153 of the central conductor 5 led out of the casing member 3 through the openings 38 are electrically connected to the ground electrodes 51 through a conductive adhesive.
  • the communication equipment illustrated in Fig. 25 is an embodiment where the non-reciprocal circuit device 9 described above with reference to Figs. 1 to 4 is fitted in the circuit board 5. More specifically, the circuit board 5 has a holder insertion hole 52 passing through the substrate 50 from one surface to the other, and a step 520 is provided along the periphery of the holder insertion hole 52 on the lower surface side of the substrate 50.
  • the non-reciprocal circuit device 9 is mounted on the circuit board 5 as follows. At first, the casing member 3 is guided into the holder insertion hole 52 from the lower surface side of the substrate 50, whereby the coupling protrusions 340 protruding from the openings 38 (see Fig. 1 ) fit in the step 520. Then, after assembly of the casing member 3 to the substrate 50, the gyromagnetic component assembly is housed in the casing member 3 and the open end face 35 is closed by the lid member 4. Here, the gyromagnetic component assembly housed in the casing member 3 is partially (the lower magnetic pole plate 17 in Fig. 25 ) led out to the upper surface side of the substrate 50 through the openings, and the substrate 50 is held between the lower magnetic pole plate 17 and the coupling protrusions 340.
  • the non-reciprocal circuit device 9 is mounted as illustrated in Fig. 25 , a further reduction in height can be achieved as compared with the embodiment illustrated in Fig. 24 , while reducing the assembly cost.
  • the gyromagnetic component assembly 1 is subjected to the pressure from the lid member 4 (or downward load), the non-reciprocal circuit device 9 can be firmly fixed to the circuit board 5.
  • the communication equipment illustrated in Fig. 26 may be provided in a base station of a mobile communication system and includes a receive circuit unit 6 and a send circuit unit 7 both connected to an antenna 8 for transmission and reception.
  • the receive circuit unit 6 includes a receiving amplifier circuit 61 and a receive circuit 62 for processing received signals.
  • the send circuit unit 7 includes a send circuit 71 for generating audio and video signals and a power amplifier circuit 72.
  • nun-reciprocal circuit devices 91, 92 may be used in the path from the antenna 8 to the receive circuit unit 6 and the send circuit unit 7 or the output stage of the power amplifier circuit.
  • the non-reciprocal circuit device 91 functions as a circulator, while the non-reciprocal circuit device 92 functions as an isolator provided with a terminator resistor R0.

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  • Non-Reversible Transmitting Devices (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
EP20070251617 2006-04-17 2007-04-17 Non-reciprocal circuit device, communication equipment using the same, and method for assembling the non-reciprocal circuit device Expired - Fee Related EP1848059B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006113226A JP3867991B1 (ja) 2006-04-17 2006-04-17 非可逆回路素子、これを用いた通信機器、及び、非可逆回路素子の組立て方法

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EP1848059A1 EP1848059A1 (en) 2007-10-24
EP1848059B1 true EP1848059B1 (en) 2009-04-08

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JP (1) JP3867991B1 (zh)
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DE (1) DE602007000836D1 (zh)

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JP2013247567A (ja) * 2012-05-28 2013-12-09 Tdk Corp 非可逆回路素子及び通信機器
CN103624617A (zh) * 2013-08-27 2014-03-12 苏州工业园区凯艺精密科技有限公司 隔离器腔体的侧板转移装置及隔离器腔体加工机
CN104124500B (zh) * 2014-07-14 2017-03-08 成都八九九科技有限公司 一种环形器
CN108598642B (zh) * 2018-07-12 2023-12-22 苏州市浩海精密机械有限公司 一种小型化微波隔离器的腔体组件及微波隔离器
CN108767388B (zh) * 2018-08-16 2024-03-15 苏州市浩海精密机械有限公司 铆接式微波隔离器壳体结构及微波隔离器
CN109193090A (zh) * 2018-09-05 2019-01-11 苏州市浩海精密机械有限公司 一种微波隔离器壳体结构
KR102050567B1 (ko) * 2019-07-10 2019-12-03 쓰리알웨이브 주식회사 소형 비가역 회로소자

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US6208218B1 (en) * 1998-05-13 2001-03-27 Murata Manufacturing Co., Ltd. Nonreciprocal circuit device including dielectric wave guide, dielectric wave guide device and radio device
US6337607B1 (en) * 2000-05-12 2002-01-08 Renaissance Electronics Corporation Surface mountable low IMD ferrite isolator/circulator structure
US6504445B1 (en) * 2001-12-07 2003-01-07 Renaissance Electronics Corporation Surface mountable low IMD circulator/isolator with a locking cover and assembly method
JP3897178B2 (ja) * 2004-09-29 2007-03-22 Ｔｄｋ株式会社 非可逆回路素子

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DE602007000836D1 (de) 2009-05-20
JP2007288486A (ja) 2007-11-01
EP1848059A1 (en) 2007-10-24
JP3867991B1 (ja) 2007-01-17
CN101060187A (zh) 2007-10-24
CN101060187B (zh) 2012-07-11

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