WO2006013740A1 - 表面実装型アンテナ及びこれを用いた無線装置 - Google Patents
表面実装型アンテナ及びこれを用いた無線装置 Download PDFInfo
- Publication number
- WO2006013740A1 WO2006013740A1 PCT/JP2005/013492 JP2005013492W WO2006013740A1 WO 2006013740 A1 WO2006013740 A1 WO 2006013740A1 JP 2005013492 W JP2005013492 W JP 2005013492W WO 2006013740 A1 WO2006013740 A1 WO 2006013740A1
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- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- dielectric block
- main surface
- antenna
- radiation
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2283—Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
Definitions
- the present invention relates to a surface mount antenna and a radio apparatus using the same, and more particularly to a surface mount antenna suitable for miniaturization and a radio apparatus using the same.
- Patent Document 1 As an antenna used in a radio apparatus, a dielectric block, a radiation electrode formed on one main surface thereof, and a second main surface of a dielectric substrate are provided. A patch antenna having the formed ground electrode and a feed pin disposed so as to penetrate from one main surface of the dielectric block to the other main surface is most common.
- Patent Document 1 since the antenna described in Patent Document 1 has a structure in which power is supplied to the radiation electrode by a power supply pin that penetrates the dielectric block, surface mounting on a printed circuit board or the like is difficult. In some cases, members such as power supply pins that use force and double-sided tape for fixing are required, which increases the number of parts. In addition, since a soldering process for fixing the power supply pin is necessary, there is a problem that the manufacturing cost is increased.
- Patent Document 2 discloses that a power supply electrode having a predetermined gap with a radiation electrode is provided on one main surface (surface on which a radiation electrode is formed) of a dielectric block. Proposed methods have been proposed. According to this structure, since it is not necessary to use a power supply pin that penetrates the dielectric block, surface mounting is facilitated, and the wireless device can be reduced in size and height.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-289219
- Patent Document 2 JP-A-11-74721
- the surface mount antenna described in Patent Document 2 has a feeding electrode provided on one main surface of the dielectric block (the surface on which the radiation electrode is formed)! As a result, the area of the main surface of the dielectric block increases and the mounting area increases accordingly. was there. Moreover, in the case of emitting circularly polarized waves, the surface mount antenna described in Patent Document 2 has a conductor pattern for emitting right-handed polarized waves and a left-handed polarized wave on one main surface of the dielectric block. Since the conductive patterns for radiation are different from each other, it was necessary to form these conductive patterns (radiation electrode and feeding electrode) on one main surface of the dielectric block using different screen masks.
- an object of the present invention is to provide a surface-mount antenna that can be further miniaturized and a wireless device using the same.
- Another object of the present invention is to provide a surface-mounted antenna capable of producing a right-hand polarized radiation conductor and a left-hand polarized radiation conductor using the same screen mask. It is to provide a wireless device used.
- a surface mount antenna includes a dielectric block, a radiation electrode formed on one main surface of the dielectric block, and a ground electrode formed on the other main surface of the dielectric block. And at least one power supply electrode that is formed on a surface different from the one main surface and the other main surface of the dielectric block and is electromagnetically coupled to the radiation electrode. .
- the feeding electrode is formed on a surface different from the one main surface and the other main surface of the dielectric block, the size of one main surface of the dielectric block is conventionally reduced. It can be made smaller than As a result, it is possible to realize such downsizing more and more, so when mounted on a printed circuit board or the like, the mounting area can be reduced as compared with the conventional case. In addition, the resonance frequency and the axial ratio and impedance can be adjusted almost independently.
- the electrode formed on one main surface of the dielectric block is only the radiation electrode, the right-hand polarized radiation conductor and the left-hand polarized radiation conductor are formed using the same screen mask. Can be made. According to this, it is possible to make a surface-mounted antenna for right-handed polarization and a surface-mounted antenna for left-handed polarized wave with almost no increase in manufacturing cost.
- the surface on which the power supply electrode is formed is preferably a side surface substantially perpendicular to the one main surface and the other main surface of the dielectric block. According to this, it becomes possible to arrange
- the power supply electrode is substantially T-shaped. According to this, the axial ratio and impedance can be easily adjusted, and the wiring distance can be minimized by being symmetrical.
- the power supply electrode includes a first power supply electrode formed on the first side surface of the dielectric block and a second power supply electrode formed on the second side surface of the dielectric block.
- the radiation electrode has a planar shape capable of radiating circularly polarized waves
- right-handed polarized waves can be transmitted and received via the first feeding electrode, and left-handed rotation via the second feeding electrode.
- Polarization can be transmitted and received.
- a surface-mounted antenna that has the same structure as a surface-mounted antenna for right-handed polarized waves and a surface-mounted antenna for left-handed polarized waves is used for both right-handed and left-handed polarized waves. It becomes possible to do.
- the radiation electrode has a planar shape that can radiate linearly polarized waves
- a 90 ° phase shifter is connected to one of the first and second feed electrodes, so that circularly polarized waves are generated. It becomes possible to radiate.
- a wireless device includes the surface-mounted antenna described above, an RF unit connected to the radiation electrode of the surface-mounted antenna, and a signal processing unit connected to the RF unit.
- a wireless device uses a surface-mounted antenna that has a small mounting area and is easy to mount, it is possible to achieve both downsizing and low cost. The invention's effect
- the present invention it is possible to further reduce the size of a surface-mounted antenna and a radio apparatus using the same. Moreover, since the radiation conductor for right-handed polarization and the radiation conductor for left-handed polarization can be manufactured using the same screen mask, the cost can be reduced.
- FIG. 1 is a schematic diagram illustrating the structure of a surface mount antenna 10 according to a preferred embodiment of the present invention. It is a perspective view, (a) is a view of the upper oblique direction force, (b) is a view of the lower oblique direction.
- the surface-mounted antenna 10 includes a plate-shaped dielectric block 11 that is a rectangular parallelepiped, and one main surface 1 of the dielectric block 11.
- the material of the dielectric block 11 may be appropriately selected according to the target frequency. Force In order to reduce the size of the dielectric block 11 while ensuring a sufficient gain, for example, the relative dielectric constant ⁇ It is preferable to form the dielectric block 11 using a material having r of about 20-25. Preferred examples of the material having a relative dielectric constant ⁇ r of about 20 to 25 include Mg—Ca—Ti based dielectric ceramics. Mg-Ca-Ti dielectric ceramics include TiO,
- Mg-Ca-Ti-based dielectric ceramics containing MgO, CaO, MnO, SiO
- the radiation electrode 12 is formed on one main surface 11a of the dielectric block 11, and the planar shape thereof is substantially square except for the corner notch 12a.
- the notch 12a is provided to generate circularly polarized waves, and in this example, the notch 12a is provided at the right back corner and the left front corner when viewed from the power supply electrode 14. As a result, right-handed polarized waves can be emitted.
- the ground electrode 13 is formed on substantially the entire other main surface l ib of the dielectric block 11 except for the notch 13a provided in the vicinity of the end of the power supply electrode 14.
- the notch 13a is provided to prevent the power supply electrode 14 and the ground electrode 13 from short-circuiting.
- the side on which the ground electrode 13 is provided becomes a mounting surface facing the printed circuit board or the like.
- the power supply electrode 14 has a substantially T-shaped planar shape.
- the c-shaped horizontal bar portion 14a is arranged in a portion adjacent to one main surface 11a of the dielectric block 11 so as to face one side of the radiation electrode 12, and the T-shaped vertical bar portion 14b is a horizontal bar portion 14a. From the longitudinal center of the dielectric block 11 to the portion adjacent to the other main surface 1 lb of the dielectric block 11. Has been placed.
- the feeding electrode 14 is not in direct contact with the radiation electrode 12, power can be fed to the radiation electrode 12 by electromagnetic coupling.
- the materials of the radiation electrode 12, the ground electrode 13, and the feeding electrode 14 are not particularly limited! /, But are gold (Au), silver (Ag), copper (Cu), palladium ( A paste containing Pd), platinum (Pt), aluminum (A1) or an alloy thereof (silver palladium, silver platinum, etc.) can be used, and it is preferably formed by a screen printing method.
- the configuration of the surface mount antenna 10 according to the present embodiment has been described above.
- the radiation electrode 12 is formed on one main surface 1 la of the dielectric block 11
- the feeding electrode 14 is the side surface of the dielectric block 11. It is formed in 11c.
- the size of the one main surface 11a of the dielectric block 11 can be reduced as compared with the prior art, so that it is possible to realize further miniaturization! Therefore, when mounted on a printed circuit board or the like, the mounting area can be reduced compared to the conventional case.
- the surface-mounted antenna 10 shown in Fig. 1 has cutouts 12a at the corner on the right side and the corner on the left side when viewed from the feeding electrode 14, which can radiate right-handed polarized waves.
- FIG. 2 if notches 12a are provided at the left rear corner and the right front corner when viewed from the feeding electrode 14, it becomes possible to radiate left-handed polarized waves.
- FIG. 3 is a diagram schematically showing a configuration of the wireless device 100 using the surface mount antenna 10 according to the present embodiment.
- the wireless device 100 includes an RF unit 110 connected to the feeding electrode 14, a signal processing unit 120 connected to the RF unit 110, and an interface connected to the signal processing unit 120.
- One part 130 is provided.
- the signal received by the surface mount antenna 10 is converted into a signal processable format by the RF unit 110 and then processed by the signal processing unit 120. And output from the interface unit 130.
- a signal input from the interface unit 130 is processed by the signal processing unit 120, converted into a high frequency signal by the RF unit 110, and then emitted from the surface mount antenna 10.
- Examples of the interface unit 130 include output devices such as a speaker, a display, and a printer, and input devices such as a microphone, a keyboard, and a mouse.
- the signal processing unit 120 can be further connected to a recording device such as a hard disk device or a CD-ROM drive.
- Such a wireless device 100 uses a surface-mount antenna 10 that has a small mounting area and is easy to mount, various wireless devices that use circularly polarized waves, such as GPS devices, are used.
- Wireless devices such as (ulooai Positioning System), ETC equipment (Electronic Toll ollection System), and satellite radio can be downsized and reduced in cost.
- the planar shape of the radiation electrode 12 is substantially square except for the corner notch 12a, but the radiation electrode 12 for radiating circularly polarized waves
- the planar shape of the radiation electrode 12 is a rectangle without notches and protrusions, or as shown in FIG. 5, a square with protrusions 12b provided at opposite corners
- FIG. 6 it is a circle with a notch 12c provided at the opposite position, as shown in FIG. 7, a circle with a protrusion 12d provided at the opposite position, or as shown in FIG. It can also be an oval shape with no cutouts or protrusions.
- FIGS. 4 to 8 are all examples of radiating right-handed polarized waves. When these radiation electrodes 12 are rotated by 90 °, left-handed polarized waves can be radiated. Again, just use the same screen mask and change its orientation!
- the planar shape of the feeding electrode 14 is substantially T-shaped.
- the planar shape of the feeding electrode 14 takes into consideration the axial ratio, impedance, and the like. You may change suitably.
- the planar shape of the feeding electrode 14 may be substantially L-shaped, or it may be a straight line (rectangular) with a constant width as shown in FIG.
- the T-shaped horizontal bar portion 14a may be replaced with a semicircular shape
- the T-shaped horizontal bar portion 14a (see Fig. 1) )
- the shape may be replaced with a triangle.
- the axial ratio and impedance are substantially determined by the length of the side adjacent to one main surface 11a of the dielectric block 11 among the sides of the power supply electrode 14, this side is linear and the dielectric Any shape may be used as long as it is disposed adjacent to one main surface 11a of the block 11.
- the planar shape is approximately T-shaped.
- FIG. 13 is a schematic perspective view showing the structure of a surface-mounted antenna 20 according to another preferred embodiment of the present invention, where (a) is a view also showing the upper oblique direction force, and (b) is the lower oblique view. It is a view from the direction.
- the surface mount antenna 20 according to the present embodiment further includes a feed electrode 15 formed on the side surface id of the dielectric block 11, and the feed electrode 15 This is different from the surface mount antenna 10 according to the above embodiment in that a notch 13b is further provided in the ground electrode 13 in the vicinity. Since the other points are the same as those of the surface mount antenna 10 according to the above embodiment, the same elements are denoted by the same reference numerals, and redundant description is omitted.
- a side electrode 1 (first side electrode) is provided with a feeding electrode 14 (first feeding electrode) and a side surface l id (first side electrode) is provided with a feeding electrode 15 (second feeding electrode).
- the second side) are the sides that are next to each other, so they form an angle of 90 °.
- the surface-mounted antenna 20 can transmit and receive right-hand polarized waves through the feed electrode 14 and can send and receive left-hand polarized waves through the feed electrode 15. That is, according to the present embodiment, a surface-mounted antenna having the same structure without creating a surface-mounted antenna for right-handed polarization and a surface-mounted antenna for left-handed polarization can be used for right-handed polarization. It can also be used for left-handed polarization. This makes it possible to realize further low cost.
- FIG. 14 is a schematic perspective view showing the structure of a surface mount antenna 30 according to still another preferred embodiment of the present invention.
- the surface mount antenna 30 according to the present embodiment includes the radiation electrode 12. It differs from the surface-mounted antenna 20 according to the above embodiment in that the planar shape is a square and no notch is provided. Since the other points are the same as those of the surface-mounted antenna 20 according to the above-described embodiment, the same elements are denoted by the same reference numerals, and redundant description is omitted. Although not shown, the state of the surface-mounted antenna 30 according to the present embodiment viewed from the lower oblique direction is the same as the state shown in FIG. 13 (b).
- FIG. 15 is a diagram schematically showing a configuration of a wireless device 200 using the surface mount antenna 30 according to the present embodiment.
- the radio apparatus 200 is provided with a signal distributor 210 between the power supply electrodes 14 and 15 and the RF unit 110, so that the signal distributor 210 and the power supply electrode 15 3 is different from the wireless device 100 shown in FIG. 3 in that a 90 ° phase shifter 220 is provided between them.
- the signal from the RF unit 110 is divided into two by the signal distributor 210, the signal is supplied to the feeding electrode 14 directly and to the feeding electrode 15 by 90 ° phase shift by 90 ° phase shifter 220. For this reason, resonance occurs in two directions orthogonal to each other at the radiation electrode 12, and this makes it possible to radiate circularly polarized waves.
- the surface-mounted antenna that radiates circularly polarized wave V is described.
- the present invention is not limited to this, and surface-mounted type that radiates linearly polarized wave. It is also possible to apply to a type antenna.
- various types of wireless devices using linearly polarized waves for example, wireless devices such as a wireless local area network (LAN) and a Bluetooth device can be downsized and reduced in cost.
- LAN wireless local area network
- Bluetooth device can be downsized and reduced in cost.
- FIG. 16 is a schematic oblique view showing the structure of a surface-mounted antenna 40 that radiates linearly polarized waves.
- the surface-mounted antenna 40 according to the present embodiment is different from the surface-mounted antenna 10 according to the above-described embodiment in that the planar shape of the radiating electrode 12 is square and the cutout is not provided. 1). According to such a configuration, unlike the above embodiments, it is possible to radiate linearly polarized waves.
- FIG. 17 is a schematic oblique view showing the structure of a surface-mounted antenna 50 that radiates linearly polarized waves.
- the surface-mounted antenna 50 according to the present embodiment is provided with substantially L-shaped feeding electrodes 14 and 15 on the adjacent side surfaces 11c and l id of the dielectric block 11, respectively. Is different from the surface mount antenna 40 (see FIG. 16) described above in that the feeding electrodes 14 and 15 are formed in a T shape as a whole. Even in such a configuration, it is possible to radiate linearly polarized waves.
- the dielectric block 11 has a rectangular parallelepiped shape with respect to V and displacement. However, this may have other shapes such as a cylindrical shape. Also in this case, if the power supply electrode is formed on a surface different from the one main surface and the other main surface of the dielectric block, it is possible to obtain the same effect as in the above embodiment.
- FIG. 18 is a schematic perspective view showing the structure of the surface mount antenna 60 in which the dielectric block 11 is cylindrical.
- the surface-mounted antenna 60 according to the present embodiment has a circular radiation electrode 12 on one main surface 1 la of a cylindrical dielectric block 11, and is opposed to the radiation electrode 12. Protrusions 12d are provided at the positions.
- the power supply electrode 14 is substantially T-shaped. Even in such a configuration, it is possible to radiate right-handed polarized waves.
- FIG. 1 is a schematic perspective view showing the structure of a surface-mounted antenna 10 according to a preferred embodiment of the present invention, in which (a) shows a view of an upper oblique direction force, and (b) shows a lower oblique direction.
- FIG. 1 shows a schematic perspective view showing the structure of a surface-mounted antenna 10 according to a preferred embodiment of the present invention, in which (a) shows a view of an upper oblique direction force, and (b) shows a lower oblique direction.
- FIG. 1 is a schematic perspective view showing the structure of a surface-mounted antenna 10 according to a preferred embodiment of the present invention, in which (a) shows a view of an upper oblique direction force, and (b) shows a lower oblique direction.
- FIG. 2 is a schematic perspective view showing the structure of a surface-mounted antenna 10 that radiates left-handed polarized waves.
- FIG. 3 is a diagram schematically showing a configuration of a radio apparatus 100 using a surface mount antenna 10.
- FIG. 4 is a diagram showing an example in which the planar shape of the radiation electrode 12 is a rectangle without cutouts and protrusions.
- FIG. 5 is a diagram showing an example in which the planar shape of the radiation electrode 12 is a square with protrusions provided at the corners.
- FIG. 6 is a diagram showing an example in which the planar shape of the radiation electrode 12 is a circle with a notch provided at an opposing position.
- FIG. 7 shows an example in which the planar shape of the radiation electrode 12 is a circle with protrusions at opposing positions. It is a figure.
- FIG. 8 is a diagram showing an example in which the planar shape of the radiation electrode 12 is an ellipse with no cutouts or protrusions.
- FIG. 9 is a diagram showing an example in which the planar shape of the feeding electrode 14 is substantially L-shaped.
- FIG. 10 is a diagram showing an example in which the planar shape of the feeding electrode 14 is a straight line (rectangular) having a constant width.
- ⁇ 11] is a diagram showing an example in which the planar shape of the feeding electrode 14 is a shape including a semicircle. .
- FIG. 12 is a diagram showing an example in which the planar shape of the feeding electrode 14 is a shape including a triangle.
- FIG. 13 A schematic perspective view showing the structure of a surface-mounted antenna 20 according to another preferred embodiment of the present invention, where (a) is a view of the upper oblique direction force, and (b) is a view of the lower oblique direction. It is a figure.
- FIG. 14 is a schematic perspective view showing the structure of a surface mount antenna 30 according to still another preferred embodiment of the present invention.
- FIG. 15 is a diagram schematically showing a configuration of a radio apparatus 200 using the surface mount antenna 30.
- FIG. 16 is a schematic perspective view showing the structure of a surface mount antenna 40 of a type that radiates linearly polarized waves.
- FIG. 17 is a schematic perspective view showing the structure of a surface mount antenna 50 of the type that radiates linearly polarized waves.
- FIG. 18 is a schematic oblique view showing the structure of a surface mount antenna 60 in which the dielectric block 11 is cylindrical.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004229752A JP2006050340A (ja) | 2004-08-05 | 2004-08-05 | 表面実装型アンテナ及びこれを用いた無線装置 |
JP2004-229752 | 2004-08-05 |
Publications (1)
Publication Number | Publication Date |
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WO2006013740A1 true WO2006013740A1 (ja) | 2006-02-09 |
Family
ID=35787031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/013492 WO2006013740A1 (ja) | 2004-08-05 | 2005-07-22 | 表面実装型アンテナ及びこれを用いた無線装置 |
Country Status (3)
Country | Link |
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US (1) | US7397430B2 (ja) |
JP (1) | JP2006050340A (ja) |
WO (1) | WO2006013740A1 (ja) |
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US7605758B2 (en) * | 2005-05-13 | 2009-10-20 | Go Net Systems Ltd. | Highly isolated circular polarized antenna |
KR100548057B1 (ko) * | 2005-06-03 | 2006-02-01 | (주)파트론 | 트리오 랜드구조를 갖는 표면실장 안테나 장치 |
EP2041833B1 (en) * | 2006-06-23 | 2014-04-23 | Nokia Corporation | Conformal and compact wideband antenna |
US7619571B2 (en) * | 2006-06-28 | 2009-11-17 | Nokia Corporation | Antenna component and assembly |
TWI313526B (en) * | 2006-07-14 | 2009-08-11 | Hon Hai Prec Ind Co Ltd | Antenna device |
KR20090032509A (ko) * | 2007-09-28 | 2009-04-01 | 한국전자통신연구원 | 금속 부착용 전파 식별 태그 안테나 |
US7969362B2 (en) * | 2007-10-15 | 2011-06-28 | Joinsoon Electronic Manufacturing Co., Ltd. | Super wide bandwidth coupling antenna |
TWI389389B (zh) * | 2009-09-21 | 2013-03-11 | Yuanchih Lin | 圓極化平板天線 |
JP5496347B2 (ja) * | 2010-09-22 | 2014-05-21 | アルプス電気株式会社 | 電子機器 |
US8542151B2 (en) * | 2010-10-21 | 2013-09-24 | Mediatek Inc. | Antenna module and antenna unit thereof |
US9112262B2 (en) * | 2011-06-02 | 2015-08-18 | Brigham Young University | Planar array feed for satellite communications |
WO2012167283A2 (en) * | 2011-06-02 | 2012-12-06 | Brigham Young University | Planar array feed for satellite communications |
US9246222B2 (en) | 2013-03-15 | 2016-01-26 | Tyco Electronics Corporation | Compact wideband patch antenna |
EP2946441B1 (en) * | 2013-01-15 | 2019-11-20 | TE Connectivity Corporation | Patch antenna |
US9325071B2 (en) * | 2013-01-15 | 2016-04-26 | Tyco Electronics Corporation | Patch antenna |
US10109922B2 (en) * | 2015-09-30 | 2018-10-23 | Microsoft Technology Licensing, Llc | Capacitive-fed monopole antenna |
JP6416354B2 (ja) * | 2017-10-03 | 2018-10-31 | シチズン時計株式会社 | 衛星電波腕時計 |
US10312569B1 (en) | 2018-01-05 | 2019-06-04 | Cirocomm Technology Corp. | Surface-mounted signal transceiver module with multi-signal feed-in |
FR3077165B1 (fr) * | 2018-01-19 | 2021-12-24 | Arianegroup Sas | Antenne planaire destinee a equiper un vehicule spatial |
DE102018102460B4 (de) * | 2018-02-05 | 2019-10-17 | Cirocomm Technology Corp. | Oberflächenmontiertes Signalsendeempfangsmodul mit Mehrfachsignaleinspeisung |
KR102268382B1 (ko) | 2019-11-20 | 2021-06-23 | 삼성전기주식회사 | 칩 안테나 모듈 |
KR102283081B1 (ko) * | 2020-01-30 | 2021-07-30 | 삼성전기주식회사 | 안테나 장치 |
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- 2005-07-28 US US11/190,906 patent/US7397430B2/en not_active Expired - Fee Related
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JPH084642A (ja) * | 1994-06-21 | 1996-01-09 | Giichi Sugimoto | 流体伝動により往復揺動する揺動子を有する揺動装置 |
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Also Published As
Publication number | Publication date |
---|---|
US7397430B2 (en) | 2008-07-08 |
JP2006050340A (ja) | 2006-02-16 |
US20060044191A1 (en) | 2006-03-02 |
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