WO2014180633A1 - Zur miniaturisierung geeignetes hf-bauelement mit verringerter kopplung - Google Patents
Zur miniaturisierung geeignetes hf-bauelement mit verringerter kopplung Download PDFInfo
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- WO2014180633A1 WO2014180633A1 PCT/EP2014/057627 EP2014057627W WO2014180633A1 WO 2014180633 A1 WO2014180633 A1 WO 2014180633A1 EP 2014057627 W EP2014057627 W EP 2014057627W WO 2014180633 A1 WO2014180633 A1 WO 2014180633A1
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- coil
- double
- electrical
- coil segment
- component
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- 230000008878 coupling Effects 0.000 title claims abstract description 30
- 238000010168 coupling process Methods 0.000 title claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000013256 coordination polymer Substances 0.000 description 2
- PCLIRWBVOVZTOK-UHFFFAOYSA-M 2-(1-methylpyrrolidin-1-ium-1-yl)ethyl 2-hydroxy-2,2-diphenylacetate;iodide Chemical compound [I-].C=1C=CC=CC=1C(O)(C=1C=CC=CC=1)C(=O)OCC[N+]1(C)CCCC1 PCLIRWBVOVZTOK-UHFFFAOYSA-M 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
- H03H9/568—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/013—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for obtaining desired frequency or temperature coefficient
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02086—Means for compensation or elimination of undesirable effects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/462—Microelectro-mechanical filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6483—Ladder SAW filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6489—Compensation of undesirable effects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/703—Networks using bulk acoustic wave devices
- H03H9/706—Duplexers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
- H03H9/725—Duplexers
Definitions
- the invention relates to RF devices having a reduced electromagnetic, z. B. inductive, coupling and are therefore well suited for miniaturization. Such reduced couplings are particularly advantageous in RF filters.
- Coil at a transmission port known.
- the coil is arranged on the substrate in such a way that it comes to lie next to its filter-topologically adjacent resonators.
- From the patent US7, 151, 430B2 a coil structure for reducing an inductive coupling is known.
- the coil has areas in which cover parts of the coil turn other parts.
- An RF device includes a housing and a micro-acoustic filter having a ladder-type filter structure disposed in the housing.
- the ladder-type filter structure comprises at least one series-branch resonator and one parallel-branch resonator.
- the device further comprises a Dop ⁇ pelspule having a first coil segment and a second coil segment.
- the double coil is also arranged in the housing.
- the first coil segment has an outer Win ⁇ extension segment with a first orientation.
- the second coil segment also has an outer coil segment, however, with a second, opposite orientation for the first orientation.
- the two outer winding segments are connected at a contact point.
- the two Spu ⁇ lensegmente are ordered Toggle without crossing over in a single layer.
- the double coil is arranged in the vicinity of the parallel-arm resonator.
- the opposition of the two coil segments causes a reduction of the electromagnetic coupling at least in a region which is arranged in the vicinity of the double coil.
- the double coil generates even Ver ⁇ ring ceremonies the coupling into two sections, wherein the coil is disposed substantially in the middle between the regions.
- a coil is a conductor, z. B. a winding which is suitable for generating a magnetic field.
- Each of the two coil segments can have a winding with an interturn ⁇ number.
- the number of turns indicates how often the conductor is guided around a center of the coil segment.
- the number of turns can assume integers greater than zero.
- the number of turns is not limited to whole numbers but also can be rational or real values anneh ⁇ men.
- the double coil is a suitable means to protect be ⁇ Sonders sensitive components. Characterized in that the double coil is angeord ⁇ net in the vicinity of the parallel branch resonator, it can be easily aligned so that the loading rich reduced coupling with at least one region with a sensitive component overlap.
- the double coil itself can represent an inductive element ⁇ which filter topological, z. B. as impedance matching or as an ESD protection element, anyway required.
- the double coil is not an additional element, so that the advantage in terms of reduced size by the arrangement of the coil is not depleted by the space required by the coil itself.
- At least one of the two coil segments is formed spirally. It is also possible that both coil segments are formed spirally.
- the term "helical” in this context refers to a coil form in which the conductor follows a path and the distance of the path, for example as viewed in the current direction, essentially runs around a center of the coil and the distance increases or decreases mon ⁇ noton It is possible that the distance along the path is not only monotonous, but even strictly monotonous increases or decreases.
- At least one of the two coil segments with a m-shaped floor plan or made of n straight m and n can be greater than or equal to three. Furthermore, it is possible for at least one of the coil segments to have a curved path. The curvature can then increase or decrease monotonically or strictly monotone.
- the m-shaped floor plan can have three, four, five, six, seven, eight, nine, ten, eleven, twelve or more corners.
- the number of straight line sections, n can be defined essentially by the number m of the corners of the floor plan multiplied by the number of turns. If the coil segment does not have a polygonal floor plan, the number of linear conductor sections can be between five and 80.
- At least one of the two coil segments has an aspect ratio of substantially less than 1, equal to 1 or greater than 1.
- the aspect ratio is essentially the ratio length / width of a partial coil.
- the length is determined in a direction parallel to the connecting line of the two centers of the coil segments.
- the width is determined in a direction perpendicular ⁇ direction. Is z. B. a coil segment a spiral with a large number of turns, a narrow ladder track and a narrow distance between turns, so the aspect ratio for large numbers of turns goes against 1.
- both coil segments the same-aspect ratio or different aspect ratios aufwei ⁇ sen. It is also possible that a coil segment has an aspect ratio ⁇ less than 1 and the other coil segment an ace ⁇ pektrich greater than the first In an aspect ratio> 1 a smaller width of the double coil can be obtained, so that a possible disadvantageously overlap of the double coil is reduced with other Druckungskompo ⁇ components.
- the first coil segment has a first extent while the second coil segment has a second extent.
- the second extent may be substantially equal to the first extent or larger or smaller.
- expansion denotes the smallest area within which extend all conductor sections of a coil segment.
- the two winding numbers of the two coil segments are the same or different.
- the number of turns can each independently be selected essentially between 0.25 and 100 arbitrarily.
- the first coil segment has a center and the second coil segment has a center.
- An axis perpendicular to a connecting line through both centers and passing through the point of contact defines a region of reduced electromagnetic coupling in an area about that axis.
- elektromagentischer coupling is a double cone, z. B. when the two coil segments are symmetrical or nearly symmetrical. In the area of the double cone - or
- the area of the double cone is substantially as ⁇ characterized by that the magnetic fields generated by the two Spulenseg ⁇ elements cancel each other, so that a region of reduced coupling, the double-cone is obtained.
- DMS Double Mode SAW
- the double cone has a half opening angle, wherein between 0 ° and 50 °. It is particularly possible that the opening angle is equal to 40 °.
- both coil segments are in a common Location formed. This is easily possible because the double coil is arranged in a single layer.
- the common layer comprises two or more layers arranged one above the other.
- the double coil may have a point symmetry with the contact point as the center of symmetry or a mirror symmetry with a mirror axis through the contact point. But it is also possible that the double coil is asymmetrically shaped. So z. B. the number of turns per coil segment differ ⁇ Lich. The production of the double coil is possible with a one-layer process.
- FIG. 1 shows a cross section through a housing H of ⁇ Bauele ments C
- Figure 2 shows a possible arrangement of the dual coil relative to a parallel resonator
- 3 shows a component C, wherein the double coil has an aspect ratio of substantially 1 ⁇
- FIG. 4 shows a component C, the double coil having an aspect ratio greater than 1,
- FIG. 6 shows a possible embodiment of the double coil
- FIG. 7 shows an alternative embodiment of the double coil
- FIG. 8 shows an alternative embodiment of the double coil
- FIG. 9 shows an alternative embodiment of the double coil
- FIG. 11 shows an alternative embodiment of the double coil
- FIG. 12 shows an alternative embodiment of the double coil
- Figure 13 shows an embodiment of a coil segment
- FIG. 15 shows the TX-RX isolation of a duplexer, once with and once without a double coil
- the parameter matrix S 1 2, S 2 3, in a larger frequency range ⁇ Fre 17 shows the matrix element S13 (TX-RX isolation) of a
- FIG. 18 shows the reflection at the TX input
- FIG. 19 shows the frequency-dependent input impedance at the TX input
- FIG. 20 the reflection at the RX output
- FIG. 21 the frequency-dependent impedance at the RX output
- FIG. 22 shows the reflection at the antenna connection
- FIG. 23 shows the frequency-dependent impedance at
- Figure 1 shows a cross section through a component C.
- component components CC are arranged in a housing H.
- the component components CC can be, for example, with acoustic waves working filter components. Due to the continuing trend towards miniaturization, the distances between the component components CC are decreasing, so that the coupling is increasingly a problem.
- One of the components CC can now comprise a double coil as described above and thereby effect a region of reduced coupling, so that further miniaturization is possible.
- FIG. 2 shows an embodiment of a device C with ei ⁇ ner Laddertype filter circuit.
- the ladder-type filter circuit includes two series-arm resonators connected in series. Further, the filter circuit comprises two Paral ⁇ lelresonatoren PR, which may constitute a series connection of the branch to ground, respectively.
- a dual coil DCL is arranged in the vicinity of a parallel-arm resonator PR and aligned so that the right of the two series resonators SR is arranged in the region of a double cone.
- the double ⁇ coil comprises DCL while a first coil segment Si and a second coil segment S2.
- the orientations of both coil ⁇ segments, based on the current flow direction, are gegenläu ⁇ fig.
- FIG. 3 shows a component C with a double coil DCL and a ladder-type filter structure.
- the ladder-type filter structure comprises five series-arm resonators SR and four parallel-arm resonators PR.
- the double coil DCL is arranged in the vicinity of the lowest parallel resonator PR.
- a DMS structure DMS is arranged.
- the double coil DCL is arranged and oriented relative to the strain gauge structure DMS such that the strain gauge structure DMS lies in a region of reduced coupling of the coil DCL.
- DMS structures can be connected to an RX output of a duplexer and forward a receive signal to a low-noise amplifier. The coupling of unwanted signals into a DMS structure would therefore be particularly critical.
- the double coil DCL has a length Li and a width Wi.
- the length is determined in the direction of a connecting line between the centers of the coil segments.
- the width is determined in a direction orthogonal thereto.
- half the length of the double coil that is to say essentially the length of a coil segment, is used.
- the coil segments of the double coil of the fi gure ⁇ 3 have an aspect ratio of 1 essentially.
- Figure 4 shows an embodiment of the component C, with the coil segments of the double coil having an enlarged ⁇ aspect ratio.
- the length L2 substantially equal to the length of the double coil of Figure 3.
- the width W 2 of the double coil of Figure 4 is relative to the width Wi of the double coil of Figure 3 ⁇ reduced.
- FIG. 5 illustrates the orientation of the double cone relative to the orientation of the dual coil.
- the coil segments each have an outer winding segment EXTS, which are connected to one another at a contact point CP.
- the double cone DCN has an axis of symmetry S which is orthogonal to the connecting line of the centers of the coil segments.
- the double ⁇ cone may have an apex angle of 2 x 40 °, ie a hal ⁇ ben opening angle of 40 °.
- the electromagnetic coupling in particular the inductive coupling is reduced. Components that are arranged in this bicone, learn a lesser
- Figure 6 shows an embodiment of the double coil, wherein the lower coil segment has a number of turns of 2.5 and the upper coil segment has a number of turns of 2.5.
- FIG. 7 shows an embodiment of the double coil, wherein the upper coil segment Si has a number of turns of 2 and the lower coil segment S 2 has a number of turns of substantially 0.75.
- Figure 8 shows an embodiment of the double coil, wherein the upper coil segment has a number of turns of 2.5 and the lower coil segment has a number of turns of 2.
- Figure 9 shows an embodiment of the double coil, wherein the upper coil segment Si and the lower coil segment S2 Win ⁇ tion numbers of just over 0.25 each have.
- the double coil can be connected via an input or output port P with other circuit components. So the double coil z. B. be connected to a parallel resonator Laddertype- the filter structure.
- FIG. 10 shows an embodiment in which the upper coil segment has a number of turns of 1.75 and the lower coil segment has a number of turns of 2.5.
- Figure 11 shows an embodiment, wherein both the upper coil segment and the lower coil segment has a Win ⁇ tion number of 2.
- Figure 12 shows an embodiment of the double coil, the top coil segment has a number of turns of 2,125, and the un ⁇ tere coil segment a number of turns of 2,625.
- Figure 13 shows an embodiment of a coil segment that has a pentagonal shape, and includes 15 straight Lei ⁇ tersegmente. The innermost, shortest conductor segment is aligned radially and does not contribute to the number of turns.
- the number of turns of the coil segment of the Fi gur ⁇ 13 2.8 is. It is possible that the m-shaped ground plan, in this case five ⁇ rectangular floor plan, is based on a symmetrical m-keeper. But it is also possible that the plan is based on a ASYMMET ⁇ innovative m-Eck.
- Figure 14 shows the amount of the matrix parameter S12 of About ⁇ tragungsfunktion a duplexer, once with double coil - Curve 1 - and once for a duplexer with a conventional single coil - Curve 2.
- Curves 3 and 4 show the over-tragungsfunktion S23 of the receiving filter.
- Curve 1 of the duple ⁇ xers with dual coil shows a significantly improved barrier effect outside the TX pass band, especially in the receiving frequency range.
- the transfer functions 3 and 4 show substantially no influence of the double coil on the transfer function of the receive filter.
- FIG. 15 shows the TX-RX insulation (matrix parameter S13) with a double coil - curve 1 - and without a double coil - curve 2. The insulation is significantly better when the double coil is present.
- FIG. 16 shows the curves of FIG. 14, but in a further frequency range. It is possible to design the coil so that the transmission behavior is far from the
- FIG. 17 shows the curves of FIG. 15 for a further frequency range.
- FIG. 18 shows the reflection (matrix element Sn) at the transmitting port of a duplexer.
- Curve 1 shows the reflection of a duplexer with a double coil
- Curve 2 shows the Refle ⁇ xion of a duplexer with a conventional single coil.
- 19 shows a Smith chart with the frequency-dependent impedance of the transmitting terminal for two duplexer of which includes egg ⁇ ner a double coil and the other a conventional A-coil ⁇ . The characteristic impedances do not differ significantly.
- Figure 20 shows the reflectivity of the antenna terminal (matrix element ⁇ S33) for two duplexer, one of which is a double ⁇ coil and the other has a conventional single coil up. Both curves are essentially identical, so that the double coil the reflection behavior at
- Figure 21 shows the frequency-dependent impedance to the Duple- xer the figure 20, where also no change in the impedance Impe ⁇ is recognizable by a coil.
- FIG. 22 shows the reflection at the receiving port for two duplexers, one comprising a dual coil and the other a conventional single coil. The curves are essentially one above the other, so that the double coil has no noticeable effect on the reflection at the receiving terminal.
- FIG. 23 shows the frequency-dependent impedance at the receiving terminal, once for a double-coil duplexer and once for a single-coil duplexer. At least in the relevant frequency range, d. H. In the area around 50 ⁇ , the center of the Smith chart, no differences caused by the double coil can be discerned.
- a component according to the invention is not limited to one of the exemplary embodiments described.
- Components with additional conductor sections, filters, impedance elements, and combinations thereof according to the invention also represent off ⁇ exemplary embodiments.
- DMS DMS (Double Mode SAW) structure
- Wi, W 2 width of the double coil
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/784,201 US9577605B2 (en) | 2013-05-10 | 2014-04-15 | RF component with reduced coupling and suitable for miniaturization |
JP2016512262A JP6246329B2 (ja) | 2013-05-10 | 2014-04-15 | 低減されたカップリングを有する小型化に適したhfデバイス。 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013104842.0 | 2013-05-10 | ||
DE102013104842.0A DE102013104842B4 (de) | 2013-05-10 | 2013-05-10 | Zur Miniaturisierung geeignetes HF-Bauelement mit verringerter Kopplung |
Publications (1)
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WO2014180633A1 true WO2014180633A1 (de) | 2014-11-13 |
Family
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Family Applications (1)
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PCT/EP2014/057627 WO2014180633A1 (de) | 2013-05-10 | 2014-04-15 | Zur miniaturisierung geeignetes hf-bauelement mit verringerter kopplung |
Country Status (4)
Country | Link |
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US (1) | US9577605B2 (de) |
JP (1) | JP6246329B2 (de) |
DE (1) | DE102013104842B4 (de) |
WO (1) | WO2014180633A1 (de) |
Families Citing this family (2)
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CN111342789B (zh) * | 2018-12-18 | 2024-01-26 | 天津大学 | 带耦合电感的滤波器单元、滤波器及电子设备 |
WO2023189835A1 (ja) * | 2022-03-29 | 2023-10-05 | 株式会社村田製作所 | 複合フィルタ装置 |
Citations (11)
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US6426683B1 (en) * | 1999-11-09 | 2002-07-30 | Motorola, Inc. | Integrated filter with improved I/O matching and method of fabrication |
US20050237144A1 (en) * | 2002-07-25 | 2005-10-27 | Koninklijke Phillips Electronics N.V. | Planar inductance |
WO2005117255A1 (ja) * | 2004-05-26 | 2005-12-08 | Hitachi Communication Technologies, Ltd. | フィルタ回路、論理ic、マルチチップモジュール、フィルタ搭載型コネクタ、伝送装置及び伝送システム |
US20060226943A1 (en) * | 2005-03-30 | 2006-10-12 | Marques Augusto M | Magnetically differential inductors and associated methods |
US7151430B2 (en) | 2004-03-03 | 2006-12-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of and inductor layout for reduced VCO coupling |
US20090147707A1 (en) * | 2006-03-08 | 2009-06-11 | Kyocera Corporation | Demultiplexer and communication device |
WO2011009868A1 (de) * | 2009-07-21 | 2011-01-27 | Epcos Ag | Filterschaltung mit verbesserter filtercharakteristik |
WO2011092879A1 (ja) | 2010-01-28 | 2011-08-04 | 株式会社村田製作所 | 弾性表面波フィルタ装置 |
WO2011101314A1 (de) | 2010-02-22 | 2011-08-25 | Epcos Ag | Mikroakustisches filter mit kompensiertem übersprechen und verfahren zur kompensation |
US20110254639A1 (en) | 2008-12-26 | 2011-10-20 | Taiyo Yuden Co., Ltd. | Duplexer and electronic device |
WO2012176576A1 (ja) * | 2011-06-20 | 2012-12-27 | 株式会社村田製作所 | フィルタ装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS565287Y2 (de) * | 1975-08-18 | 1981-02-05 | ||
JPH07263995A (ja) * | 1994-03-22 | 1995-10-13 | Hitachi Ltd | 弾性表面波装置およびそれを用いたアンテナ分波器 |
DE10225202B4 (de) * | 2002-06-06 | 2017-06-01 | Epcos Ag | Mit akustischen Wellen arbeitendes Bauelement mit einem Anpassnetzwerk |
JP3778902B2 (ja) * | 2003-04-28 | 2006-05-24 | 富士通メディアデバイス株式会社 | 分波器及び電子装置 |
US20060139125A1 (en) * | 2003-12-01 | 2006-06-29 | Shiga-Ken Shigeyuki | Filter device |
JP2006135447A (ja) * | 2004-11-02 | 2006-05-25 | Fujitsu Media Device Kk | 分波器 |
WO2009136472A1 (ja) * | 2008-05-07 | 2009-11-12 | 株式会社村田製作所 | 弾性波フィルタ装置 |
JP5215767B2 (ja) * | 2008-07-31 | 2013-06-19 | 太陽誘電株式会社 | フィルタ、分波器、および通信機器 |
DE102012112571B3 (de) | 2012-12-18 | 2014-06-05 | Epcos Ag | Schaltungsanordnung |
-
2013
- 2013-05-10 DE DE102013104842.0A patent/DE102013104842B4/de not_active Expired - Fee Related
-
2014
- 2014-04-15 US US14/784,201 patent/US9577605B2/en active Active
- 2014-04-15 JP JP2016512262A patent/JP6246329B2/ja not_active Expired - Fee Related
- 2014-04-15 WO PCT/EP2014/057627 patent/WO2014180633A1/de active Application Filing
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WO2005117255A1 (ja) * | 2004-05-26 | 2005-12-08 | Hitachi Communication Technologies, Ltd. | フィルタ回路、論理ic、マルチチップモジュール、フィルタ搭載型コネクタ、伝送装置及び伝送システム |
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WO2011009868A1 (de) * | 2009-07-21 | 2011-01-27 | Epcos Ag | Filterschaltung mit verbesserter filtercharakteristik |
WO2011092879A1 (ja) | 2010-01-28 | 2011-08-04 | 株式会社村田製作所 | 弾性表面波フィルタ装置 |
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WO2011101314A1 (de) | 2010-02-22 | 2011-08-25 | Epcos Ag | Mikroakustisches filter mit kompensiertem übersprechen und verfahren zur kompensation |
WO2012176576A1 (ja) * | 2011-06-20 | 2012-12-27 | 株式会社村田製作所 | フィルタ装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102013104842B4 (de) | 2015-11-12 |
DE102013104842A1 (de) | 2014-11-13 |
US9577605B2 (en) | 2017-02-21 |
JP2016518792A (ja) | 2016-06-23 |
JP6246329B2 (ja) | 2017-12-13 |
US20160072476A1 (en) | 2016-03-10 |
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