WO2005107068A1 - フィルターデバイス用基体及びフィルターデバイス - Google Patents
フィルターデバイス用基体及びフィルターデバイス Download PDFInfo
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- WO2005107068A1 WO2005107068A1 PCT/JP2005/007506 JP2005007506W WO2005107068A1 WO 2005107068 A1 WO2005107068 A1 WO 2005107068A1 JP 2005007506 W JP2005007506 W JP 2005007506W WO 2005107068 A1 WO2005107068 A1 WO 2005107068A1
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- 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
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- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H7/463—Duplexers
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- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
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- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0566—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers
- H03H9/0571—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers including bulk acoustic wave [BAW] devices
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- H03H9/0566—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers
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Definitions
- the present invention relates to a filter device configured by mounting at least one filter chip on a base, such as an antenna duplexer, formed by laminating a plurality of ceramic layers.
- an antenna duplexer includes an antenna terminal ANT to which an antenna is connected, a transmitting signal terminal Tx to which a transmitting circuit is connected, and a receiving signal terminal to which a receiving circuit is connected.
- the antenna terminal ANT is connected to the transmitting signal terminal Tx via the transmitting filter chip (2) composed of a surface acoustic wave element, and the receiving filter chip (3) composed of the surface acoustic wave element The signal is then connected to the receiving-side signal terminal Rx (see Patent Document 1).
- a phase matching strip line (6) for rotating the phase is interposed between the antenna terminal ANT and the receiving filter chip (3), and the transmitting filter chip (2) and the receiving filter chip are interposed. Phase matching during (3) is attempted (see Patent Document 2).
- FIGS. 11 and 12 show the configuration of a knocked-down antenna duplexer, in which a cavity (80) is recessed on the surface of a base (8) formed by laminating a plurality of ceramic layers.
- the transmitting filter chip (2) and the receiving filter chip (3) are mounted on the bottom of the cavity (80), and the terminals provided on these filter chips are connected to the surroundings via wires (4).
- Each pad is connected to a plurality of pads (7) (71).
- a plurality of side electrodes (95X96) serving as a plurality of external terminals such as a transmission-side signal terminal Tx and a reception-side signal terminal Rx are formed on the side surface of the base (8) as shown in Fig. 12.
- the pads (7) (71) are connected to the foot terminals (93X94) formed on the back surface of the base (8) via the signal wiring pattern (90X91) and the side electrodes (95X96).
- the cavity (80) of the base (8) is closed by the lid (50).
- FIGS. 13 to 18 show six ceramic layers (81) to (86) constituting the base (8).
- the symbols Tx, Rx, ANT, A, B, C, and D are the transmitting signal terminal Tx, the receiving signal terminal Rx, the antenna terminal ANT, and the transmitting filter chip shown in FIG. 10, respectively. It indicates that it is the part that constitutes the input / output terminals A and B of (2) and the input / output terminals C and D of the receiving filter chip (3), and the symbol G is the part that constitutes the ground terminal. It represents.
- a cavity (80a) is opened in the center of the uppermost first ceramic layer (81).
- a cavity (80b) is opened in the center of the second ceramic layer (82), and the surface of the ceramic layer (82) surrounds the cavity (80b) and has a filter chip for transmission.
- (2) and a plurality of pads to be wire-bonded to a plurality of terminals of the receiving filter chip (3) (7) (71) (72) (73), a ground pattern (43X44), and a plurality of signal wiring patterns ( 90X91).
- a ground pattern (41) is formed on the surface of the third ceramic layer (83), and the transmitting filter chip (2) and the receiving filter chip are formed on the ground pattern (41). Filter One chip (3) is mounted.
- a strip line (6) for phase matching is formed on the surface of the fourth ceramic layer (84).
- a ground pattern (42) is formed on the surface of the fifth ceramic layer (85) as shown in FIG.
- a plurality of foot terminals (93X94) are formed on the back surface of the lowermost sixth ceramic layer (86) as shown in FIG.
- the transmission-side signal terminal Tx shown in FIG. 14 is connected to the node (71) via the transmission-side input signal wiring pattern (91), and further through a wire to the transmission filter chip (2).
- the signal output terminal B of the transmitting filter chip (2) is connected to the pad (72) via a wire, and is connected to the antenna terminal ANT.
- the pad (72) passes through a conductive material (hereinafter simply referred to as a via) (5) (5) in a via hole formed in the second ceramic layer (82) and the third ceramic layer (83) in FIG. 16 is connected to one terminal E of the strip line for phase matching (6) shown in FIG.
- the other terminal F of the phase matching strip line (6) passes through vias (51) provided in the third ceramic layer (83) of FIG. 15 and the second ceramic layer (82) of FIG. It is connected to the pad (73) shown in FIG.
- the pad (73) is connected to the signal input of the receiving filter chip (3) by a wire.
- the signal output terminal D of the receiving filter chip (3) is connected to the pad (7) by a wire, and the pad (7) is connected to the receiving signal terminal Rx via the receiving output signal wiring pattern (90). It is connected.
- the receiving-side output signal wiring pattern (90) has an inductance component, thereby improving the signal passing characteristics in the signal passing band of the receiving filter chip (3).
- the two ground terminals G, G on the signal input side and the signal output side of the receiving filter chip (3) are respectively connected to the ground pattern (44) on the signal input side via wires. It is connected to the ground pattern (43) on the signal output side.
- ground pattern (41) shown in FIG. 15 and the ground pattern (42) shown in FIG. 17 are mutually connected via a plurality of vias (51) provided in the fourth ceramic layer (84) as shown in FIG. ,It is connected to the.
- Patent Document 1 JP-A-11-340781
- Patent Document 2 Japanese Patent Application Laid-Open No. 2000-307383
- the signal input to the transmission-side signal terminal Tx passes through the transmission filter chip (2), and is output from the antenna terminal ⁇ to the antenna. At this time, it is necessary to prevent the phenomenon that the signal input to the transmitting signal terminal Tx goes around to the receiving signal terminal Rx.
- the signal path from the transmitting signal terminal Tx to the receiving signal terminal Rx via the transmitting filter chip (2) and the receiving filter chip (3) is variously isolated. Measures are taken.
- the conventional antenna duplexer still does not have a sufficient isolation effect, leaving room for further improvement.
- An object of the present invention is to provide a filter device base and a filter device that can obtain a higher isolation effect than conventional ones with a simple configuration.
- Means for solving the problem The filter device base according to the present invention is configured by laminating a plurality of ceramic layers, has a filter chip mounting portion for mounting at least one filter chip for transmission or reception, and has one filter chip mounting portion.
- a signal input pad, a signal output pad, a signal input side ground pattern and a signal output side to which the signal input terminal, the signal output terminal, the ground terminal, and the ground terminal of the filter chip are to be connected, respectively, are provided on the surface of the ceramic layer.
- a ground pattern is provided.
- the signal input-side ground pattern and the signal output-side ground pattern are connected to each other by a connection wiring pattern on the surface of the one ceramic layer.
- a plurality of side electrodes extending in the laminating direction of the ceramic layers are provided on one or a plurality of side surfaces of the base, and the signal input pad, the signal output pad, the signal input side ground pattern, and the signal output side ground pattern are provided. Are connected to foot terminals formed on the back surface of the base via side electrodes.
- the base for a filter device of the present invention at least one filter chip for transmission or reception is mounted on the filter chip mounting portion, and a plurality of terminals of the filter chip are connected to pads or ground patterns on the surface of the base. By performing wire bonding to the filter device, the filter device of the present invention is completed.
- the filter device since the signal input-side ground pattern and the signal output-side ground pattern are connected to each other, the ground function of both ground patterns is strengthened. As a result, the isolation effect is improved.
- one signal wiring pattern is formed on the surface of another ceramic layer located above or below the one ceramic layer, and the signal wiring One via is provided in at least one ceramic layer interposed between the pattern and the signal input pad or the signal output pad, and one end of the signal wiring pattern is connected to the signal input pad via the via.
- the other end of the signal wiring pattern is connected to one foot terminal via one side electrode.
- the signal input-side ground pattern and the signal output-side ground pattern are different from a ceramic layer on which the signal wiring pattern is formed. Therefore, the connection wiring pattern for connecting the ground patterns to each other can be designed with a high degree of freedom in terms of position and shape without being hindered by the signal wiring pattern.
- the signal wiring pattern has a shape having an inductance component, the signal passing characteristics of the filter chip in the signal passing band can be improved.
- the filter device substrate and the filter device of the present invention it is possible to obtain a higher isolation effect than before by a simple configuration in which only two ground patterns are connected.
- the antenna duplexer includes an antenna terminal ANT to which an antenna is connected, a transmission signal terminal Tx to which a transmission circuit is connected, and a reception terminal to which a reception circuit is connected as shown in FIG.
- the antenna terminal ANT is connected to the transmitting signal terminal Tx via the transmitting filter chip (2), which is a surface acoustic wave element, and the phase matching strip line (6) and the elastic surface It is connected to the signal terminal Rx on the receiving side via the receiving filter chip (3), which also produces a wave element.
- FIG. 1 and FIG. 2 show a package structure of an antenna duplexer according to the present invention, in which a cavity (10) is recessed on the surface of a base (1) formed by laminating a plurality of ceramic layers.
- a transmitting filter chip (2) and a receiving filter chip (3) are mounted on the bottom surface of the cavity (10), and a plurality of terminals provided on these filter chips are connected via wires (4). And is connected to a plurality of surrounding pads (7) and (71), respectively.
- a plurality of side electrodes (95X96) serving as a plurality of external terminals such as a transmission signal terminal Tx and a reception signal terminal Rx are formed on the side surface of the base (1) as shown in FIG.
- the pads (7) (71) are connected to the foot terminals (93X94) formed on the back surface of the base (1) via the signal wiring patterns (9) (91) and the side electrodes (95X96).
- FIG. 3 to FIG. 9 show seven ceramic layers (11) to (17) constituting the base (1).
- the symbols Tx, Rx, ANT, A, B, C, and D in FIGS. 1 to 9 indicate the transmission signal terminal Tx, the reception signal terminal Rx, the antenna terminal ANT, and the transmission filter chip shown in FIG. 10, respectively.
- a cavity (10a) is opened in the center of the uppermost first ceramic layer (11).
- a cavity (10b) is opened at the center of the second ceramic layer (12) as shown in FIG. 4, and the surface of the ceramic layer (12) surrounds the cavity (10b) as shown in FIG.
- a wiring pattern (91X45) is formed.
- the signal output side ground pattern (43) and the signal input side ground pattern (44) are located near the signal output pad (7) and the signal input pad (73), respectively. It is formed surrounding (73).
- a cavity (10c) is opened at the center of the third ceramic layer (13), and a receiving-side output signal wiring pattern (9) is formed on the surface of the ceramic layer (13).
- One end (9b) of the receiving-side output signal wiring pattern (9) is connected to the receiving-side signal terminal Rx, as shown in FIG. 6, on the surface of the fourth ceramic layer (14).
- a phase matching strip line (6) is formed on the surface of the fifth ceramic layer (15).
- a ground pattern (42) is formed on the surface of the sixth ceramic layer (16) as shown in FIG.
- a plurality of foot terminals (93X94) are formed on the back surface of the lowermost seventh ceramic layer (17) as shown in FIG.
- the transmission-side signal terminal Tx shown in FIG. 2 is connected to the node (71) via the transmission-side input signal wiring pattern (91), and further to the transmission filter via the wire (4).
- Signal of chip (2) Connected to input terminal A.
- the signal output terminal B of the transmitting filter chip (2) is connected to the pad (72) via the wire (4), and is connected to the antenna terminal ANT.
- the pad (72) passes through the vias (52) provided in the second ceramic layer (12), the third ceramic layer (13) in FIG. 5, and the fourth ceramic layer (14) in FIG. 7 is connected to one terminal E of the strip line (6) for phase matching shown in FIG.
- the other terminal F of the strip line for phase matching (6) is a fourth ceramic layer (14) in FIG. 6, a third ceramic layer (13) in FIG. 5, and a second ceramic layer (12) in FIG. Via the via (53) provided in the above, it is connected to the pad (73) shown in FIG.
- the pad (73) is connected to the signal input terminal C of the receiving filter chip (3) by a wire (4) as shown in FIG.
- the signal output terminal D of the receiving filter chip (3) is connected to a pad (7) by a wire (4), and the pad (7) is connected to a via provided on the second ceramic layer (12) in FIG. Via (54), it is connected to the other end (9a) of the receiving-side output signal wiring pattern (9) shown in FIG.
- the receiving-side output signal wiring pattern (9) has a shape exhibiting an inductance component, thereby improving the signal passing characteristics in the signal passing band of the receiving filter chip (3). I have.
- two ground terminals G, G on the signal input side and the signal output side of the receiving filter chip (3) are respectively connected to the ground pattern (44) on the signal input side via the wire (4). ) And the ground pattern (43) on the signal output side.
- ground pattern (41) shown in FIG. 6 and the ground pattern (42) shown in FIG. 8 are mutually connected via a plurality of vias (51) provided in the fifth ceramic layer (15) as shown in FIG. It is connected.
- the ground pattern (44) on the signal input side and the ground pattern (43) on the signal output side with respect to the receiving filter chip (3) are formed by the second ceramic layer ( 12), and are connected to each other by the connection wiring pattern (45), so that high isolation effect can be obtained as described later.
- the output signal wiring pattern (9) on the receiving side was formed on the same ceramic layer as the ground pattern (43X44) and moved to the third ceramic layer (13) as shown in FIG.
- the pad (7) of the second ceramic layer (12) shown in Fig. 2 is connected to the output signal wiring pattern (9) on the receiving side of the third ceramic layer (13) via the via (54).
- connection wiring pattern (45) for connecting the (43X44) to each other can be designed with a high degree of freedom with respect to the shape and the position that are not hindered by the reception-side output signal wiring pattern (9). As a result, excellent signal passing characteristics are realized.
- FIGS. 19 (a) and 19 (b) show the results of measuring the signal passing characteristics of the conventional antenna duplexer shown in FIGS. 11 to 18 and the antenna duplexer of the present invention shown in FIGS. 1 to 9, respectively. ing.
- the attenuation in the signal pass band (Tx band) is about 10 dB less for the antenna duplexer of the present invention shown in FIG. 19 (b) than for the conventional antenna duplexer shown in FIG. 19 (a). Therefore, it can be said that the antenna duplexer of the present invention has better isolation characteristics than the conventional antenna duplexer.
- the ground terminal of the filter chip is called a signal input-side ground terminal and a signal output-side ground terminal, which are located near the signal input terminal and the signal output terminal of the filter chip.
- the arranged ground terminals are each referred to as such for convenience.
- the present invention is not limited to the positional relationship as described above. If the ground terminal is formed on the filter chip, even if it is misaligned, the signal input-side ground pattern and the signal output-side ground pattern provided on the base body. And the connection via a wire, the effect of the present invention can be similarly obtained.
- the configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims.
- only the reception filter chip (3) of the one transmission filter chip (2) and the reception filter chip (3) has V, the ground pattern on the signal input side and the signal output side.
- the ground pattern on the signal input side and the ground pattern on the signal output side are connected to each other for each of the filter chips (2) and (3).
- the present invention is not limited to an antenna duplexer equipped with both the transmitting filter chip (2) and the receiving filter chip (3), but is applied to a filter device equipped with only one of the filter chips. It is also possible.
- FIG. 1 is a cross-sectional view schematically illustrating a structure of an antenna duplexer according to the present invention.
- FIG. 2 is a plan view of the antenna duplexer according to the present invention with the lid removed.
- FIG. 3 is a plan view of a first ceramic layer.
- FIG. 4 is a plan view of a second ceramic layer.
- FIG. 5 is a plan view of a third ceramic layer.
- FIG. 6 is a plan view of a fourth ceramic layer.
- FIG. 7 is a plan view of a fifth ceramic layer.
- FIG. 8 is a plan view of a sixth ceramic layer.
- FIG. 9 is a plan view of a seventh ceramic layer.
- FIG. 10 is a block diagram illustrating a configuration of an antenna duplexer.
- FIG. 11 is a perspective view of a conventional antenna duplexer with a lid removed.
- FIG. 12 is a cross-sectional view schematically showing the structure of a conventional antenna duplexer.
- FIG. 13 is a plan view of a first ceramic layer.
- FIG. 14 is a plan view of a second ceramic layer.
- FIG. 15 is a plan view of a third ceramic layer.
- FIG. 16 is a plan view of a fourth ceramic layer.
- FIG. 17 is a plan view of a fifth ceramic layer.
- FIG. 18 is a plan view of a sixth ceramic layer.
- FIG. 19 is a graph comparing the signal passing characteristics of a conventional antenna duplexer and the antenna duplexer of the present invention.
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
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US11/579,137 US7432783B2 (en) | 2004-04-30 | 2005-04-20 | Filter device substrate and filter device |
JP2006519499A JPWO2005107068A1 (ja) | 2004-04-30 | 2005-04-20 | フィルターデバイス用基体及びフィルターデバイス |
Applications Claiming Priority (2)
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JP2004-135248 | 2004-04-30 | ||
JP2004135248 | 2004-04-30 |
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WO2005107068A1 true WO2005107068A1 (ja) | 2005-11-10 |
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PCT/JP2005/007506 WO2005107068A1 (ja) | 2004-04-30 | 2005-04-20 | フィルターデバイス用基体及びフィルターデバイス |
Country Status (3)
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US (1) | US7432783B2 (ja) |
JP (1) | JPWO2005107068A1 (ja) |
WO (1) | WO2005107068A1 (ja) |
Cited By (1)
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WO2012176401A1 (ja) * | 2011-06-21 | 2012-12-27 | 株式会社村田製作所 | 回路モジュール |
Families Citing this family (1)
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JP5902825B2 (ja) * | 2012-10-29 | 2016-04-13 | 京セラ株式会社 | 素子収納用パッケージおよび実装構造体 |
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JPH0595253A (ja) * | 1991-10-02 | 1993-04-16 | Hitachi Ltd | 弾性表面波回路装置 |
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JPH0697315A (ja) * | 1992-09-09 | 1994-04-08 | Hitachi Ltd | 回路素子モジュール |
JPH10284976A (ja) * | 1997-04-07 | 1998-10-23 | Murata Mfg Co Ltd | 弾性表面波装置 |
JP2002158449A (ja) * | 2000-11-22 | 2002-05-31 | Tdk Corp | 高周波電子回路モジュールおよびモジュール用多層基板 |
JP2003163570A (ja) * | 2001-11-26 | 2003-06-06 | Fujitsu Media Device Kk | 分波器及びこれを用いた電子装置 |
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EP0367181B1 (en) | 1988-10-31 | 1994-04-20 | Hitachi, Ltd. | Surface acoustic wave filter device |
JP3224129B2 (ja) | 1999-04-19 | 2001-10-29 | 富士通株式会社 | 分波器 |
JP2003307383A (ja) | 2002-04-15 | 2003-10-31 | Fenwall Controls Of Japan Ltd | 乾燥炉 |
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2005
- 2005-04-20 WO PCT/JP2005/007506 patent/WO2005107068A1/ja active Application Filing
- 2005-04-20 JP JP2006519499A patent/JPWO2005107068A1/ja active Pending
- 2005-04-20 US US11/579,137 patent/US7432783B2/en not_active Expired - Fee Related
Patent Citations (9)
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JPH0372708A (ja) * | 1988-10-31 | 1991-03-27 | Hitachi Ltd | 弾性表面波装置 |
JPH0595253A (ja) * | 1991-10-02 | 1993-04-16 | Hitachi Ltd | 弾性表面波回路装置 |
JPH0653775A (ja) * | 1992-07-28 | 1994-02-25 | Tdk Corp | 弾性表面波装置 |
JPH0697315A (ja) * | 1992-09-09 | 1994-04-08 | Hitachi Ltd | 回路素子モジュール |
JPH10284976A (ja) * | 1997-04-07 | 1998-10-23 | Murata Mfg Co Ltd | 弾性表面波装置 |
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JP2003163570A (ja) * | 2001-11-26 | 2003-06-06 | Fujitsu Media Device Kk | 分波器及びこれを用いた電子装置 |
JP2003304139A (ja) * | 2002-02-07 | 2003-10-24 | Ngk Spark Plug Co Ltd | 弾性表面波分波器用パッケージ及び弾性表面波分波器用パッケージの製造方法 |
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WO2012176401A1 (ja) * | 2011-06-21 | 2012-12-27 | 株式会社村田製作所 | 回路モジュール |
JP5618003B2 (ja) * | 2011-06-21 | 2014-11-05 | 株式会社村田製作所 | 回路モジュール |
US10326489B2 (en) | 2011-06-21 | 2019-06-18 | Murata Manufacturing Co., Ltd. | Circuit module |
Also Published As
Publication number | Publication date |
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US20070247258A1 (en) | 2007-10-25 |
JPWO2005107068A1 (ja) | 2008-03-21 |
US7432783B2 (en) | 2008-10-07 |
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