WO2011122821A2 - 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 광대역 내장형 안테나 - Google Patents
개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 광대역 내장형 안테나 Download PDFInfo
- Publication number
- WO2011122821A2 WO2011122821A2 PCT/KR2011/002128 KR2011002128W WO2011122821A2 WO 2011122821 A2 WO2011122821 A2 WO 2011122821A2 KR 2011002128 W KR2011002128 W KR 2011002128W WO 2011122821 A2 WO2011122821 A2 WO 2011122821A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductive member
- antenna
- electromagnetic coupling
- impedance matching
- radiator
- 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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
Definitions
- the present invention relates to an internal antenna, and more particularly, to a broadband internal antenna using electromagnetic coupling.
- the miniaturization and multifunction of the mobile communication terminal it is required to minimize the space occupied by the antenna in the mobile communication terminal, which increases the burden on the design of the antenna.
- a helical antenna and a planar inverted antenna are mainly used as antennas of a mobile communication terminal.
- the helical antenna is configured to protrude to the outside of the terminal, it is difficult to design an exterior suitable for the aesthetic appearance and the portable function of the terminal.
- the internal structure of the helical antenna has not been studied yet. Not suitable for use
- An inverted-F antenna is an antenna designed to have a low profile structure to be embedded in a terminal.
- the inverted-F antenna reinforces the beam directed toward the ground plane of the entire beams generated by the current induced in the radiator to attenuate the beam directed to the human body, thereby improving SAR characteristics and reinforcing the beam directed toward the radiator.
- the low profile structure can be realized by operating as a rectangular microstrip antenna which has a directivity and the length of the rectangular flat radiator is reduced by half.
- Such an inverted-F antenna is an antenna that provides many advantages in miniaturization and radiation characteristics and is the most commonly used internal antenna.
- the inverted-F antenna is difficult to design to have multiband and broadband characteristics due to the narrowband characteristic. There was this.
- FIG. 1 is a view illustrating a structure of a built-in antenna using an electromagnetic coupling proposed in the related art.
- Built-in antenna using the electromagnetic coupling of the structure as shown in FIG. 1 can secure the broadband characteristics compared to the inverted-F antenna, but when designed to have a multi-band characteristics, there is a problem that the impedance matching is deteriorated in a specific band.
- a broadband internal antenna that can improve the impedance matching characteristics while properly securing the broadband characteristics and multi-band characteristics.
- the present invention provides a built-in antenna that can easily implement a multi-band while securing a broadband characteristics by using electromagnetic coupling.
- one end of the first conductive member electrically connected to the feed point; A second conductive member spaced apart from the first conductive member by a predetermined distance and electrically connected to a ground; A radiator extending from the second conductive member; And a ground plate coupled to the other end of the first conductive member to provide an embedded antenna using electromagnetic coupling for improved impedance matching.
- the antenna may further include a dielectric structure to which the first conductive member, the second conductive member, and the ground plate are coupled.
- the ground plane is preferably located opposite the radiator on the dielectric structure.
- the antenna may include a plurality of first protrusions protruding from the first conductive member in the direction of the first conductive member.
- the antenna may include a plurality of second protrusions protruding from the second conductive member in the direction of the first conductive member.
- the first conductive member is one end is electrically connected to the feed point and the other end is electrically connected to ground; A second conductive member spaced apart from the first conductive member by a predetermined distance and electrically connected to a ground; And a radiator extending from the second conductive member, wherein electromagnetic coupling from the first conductive member to the second conductive member occurs in a predetermined region of the first conductive member and the second conductive member, and the first conductive member Is provided with a built-in antenna using electromagnetic coupling that supports improved impedance matching operating as a loop emitter.
- the antenna according to the present invention has an advantage of improving impedance matching characteristics while adequately securing broadband characteristics and multi-band characteristics.
- FIG. 1 is a view showing the structure of a built-in antenna using an electromagnetic coupling proposed by the inventor.
- FIG. 2 is a plan view showing a structure of a built-in antenna using electromagnetic coupling according to an embodiment of the present invention.
- FIG 3 is a diagram illustrating an example in which an antenna is coupled to a dielectric structure according to an embodiment of the present invention.
- FIG. 2 is a plan view showing the structure of a built-in antenna using electromagnetic coupling according to an embodiment of the present invention.
- a built-in antenna using electromagnetic coupling may include a first conductive member 200, a second conductive member 202, a radiator 204, and a ground plate 206. It may include.
- the first conductive member 200 is electrically connected to the feed point.
- the first conductive member 200 is spaced apart from the second conductive member 202 at a predetermined distance by an electromagnetic coupling.
- the second conductive member 202 is electrically connected to the ground and spaced apart from the first conductive member 200.
- One end of the first conductive member 200 is connected to the feed point as described above, and the other end is electrically coupled to the ground plate 206.
- An RF signal is applied to the first conductive member 200 through a feed point, and electromagnetic coupling from the first conductive member 200 to the second conductive member 202 occurs.
- the RF signal is applied to the second conductive member 202 through electromagnetic coupling. Traveling waves may occur during electromagnetic coupling from the first conductive member 200 to the second conductive member 202.
- the first conductive member 200 serves to apply an RF signal to the second conductive member 202 through electromagnetic coupling, and simultaneously acts as a loop radiator. As shown in FIG. 2, the other end of the first conductive member 200 is combined with the ground plate 206 to operate as a loop radiator having one end grounded.
- the radiation frequency of the loop radiator is determined by the length of the first conductive member 200.
- the ground plate 206 is formed at a position opposite to the radiator 204 (opposite the portion where the radiator is formed when the antenna is formed on the dielectric structure) and is coupled to the first conductive member 200.
- the first conductive member 200 and the second conductive member 202 are secured to ensure sufficient coupling between the first conductive member 200 and the second conductive member 202 spaced a predetermined distance.
- the broadband characteristics When is set relatively long, it is possible to ensure the broadband characteristics.
- the lengths of the first conductive member 200 and the second conductive member 202 may be reduced. Is set to be relatively short, the first protrusion 220 and the second protrusion 230 forming the delayed wave structure are used to ensure sufficient coupling.
- a plurality of first protrusions 220 protrude from the first conductive member 200 in the direction of the second conductive member 202, and the second protrusions 230 are formed of the first conductive member 200 from the second conductive member 202.
- a plurality of protrusions protrude in the) direction.
- the plurality of first protrusions 220 and the second protrusions 230 may alternately protrude to engage with each other.
- the first protrusion 220 and the second protrusion 230 protruding from the first conductive member 200 and the second conductive member 202 protrude like an open stub, and the first conductive member 200 and the second conductive member 200. It is possible to substantially increase the electrical length of 202 to ensure wider broadband characteristics.
- first protrusion 220 and the second protrusion 230 have the same protrusion length and width, but the width and length of the first protrusion 220 and the second protrusion 230 are partially different. It may be set.
- shapes of the first protrusion 220 and the second protrusion 230 are rectangular, the shape of the protrusion is not limited thereto.
- the first conductive member 200 and the second conductive member 202 operate as a feeding part and an impedance matching part by electromagnetic coupling, and the radiator 204 extending from the second conductive member 202 radiates an RF signal.
- the radiation frequency of the antenna is determined by the length of the radiator 204 of the second conductive member 202. As mentioned above, the radiator 204 is located opposite the ground plane.
- first radiation by the first conductive member 200 and second radiation by the radiator 204 are performed, and the first radiation has a relatively short electrical length.
- First radiation is made in the low band by the conductive member 200 and second radiation is made in the high band by the radiator 204 having a relatively long electrical length. Since the ground plate 206 and the radiator 204 are located opposite to each other, interference between the first radiation and the second radiation does not occur, and a current path for radiation is also formed independently.
- the multi-band characteristic was generally implemented by forming a radiator extending from the second conductive member into a branch structure.
- the multi-band characteristic was generally implemented by forming a radiator extending from the second conductive member into a branch structure.
- a branch structure extending from the second conductive member there is a problem in that radiation efficiency is lowered because sufficient impedance matching is not performed in a specific band.
- the first conductive member 200 which is used for coupling feeding and matching, is connected to the ground plate 206 in the opposite direction to the radiator 204 to be used as a loop radiator to compensate for impedance matching degradation in a specific band.
- the structure of the radiator 204 can be more simply implemented.
- Components according to the embodiment of the present invention described above may be coupled to a dielectric structure such as a carrier and a substrate to operate as an antenna.
- FIG. 3 is a diagram illustrating an example in which an antenna is coupled to a dielectric structure according to an embodiment of the present invention.
- the antenna according to an embodiment of the present invention may be coupled to the top and sides of the dielectric structure to implement the multi-band characteristic while the first conductive member may operate as a loop radiator.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims (7)
- 일단이 급전점과 전기적으로 연결되는 제1 도전 부재;상기 제1 도전 부재와 소정 거리 이격되며 접지와 전기적으로 연결되는 제2 도전 부재;상기 제2 도전 부재로부터 연장되는 방사체; 및상기 제1 도전 부재의 타단과 결합되는 접지판을 포함하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 제1항에 있어서,상기 제1 도전 부재, 상기 제2 도전 부재 및 상기 접지판이 결합되는 유전체 구조물을 더 포함하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 제2항에 있어서,상기 접지판은 상기 유전체 구조물상에서 상기 방사체와 반대편에 위치하는 것을 특징으로 하는 개서된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 제3항에 있어서,상기 제1 도전 부재 및 상기 제2 도전 부재에는 진행파가 발생하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 제1항에 있어서,상기 제1 도전 부재로부터 상기 제1 도전 부재 방향으로 돌출되는 다수의 제1 돌출부를 포함하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 제4항에 있어서,상기 제2 도전 부재로부터 상기 제1 도전 부재 방향으로 돌출되는 다수의 제2 돌출부를 포함하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
- 일단이 급전점과 전기적으로 연결되며 타단이 접지와 전기적으로 연결되는 제1 도전 부재;상기 제1 도전 부재와 소정 거리 이격되며 접지와 전기적으로 연결되는 제2 도전 부재; 및상기 제2 도전 부재로부터 연장되는 방사체를 포함하되,상기 제1 도전 부재 및 제2 도전 부재의 소정 영역에서는 제1 도전 부재로부터 제2 도전 부재로의 전자기 결합이 발생하며, 상기 제1 도전 부재는 루프 방사체로 동작하는 것을 특징으로 하는 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 내장형 안테나.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180016388.9A CN102823058B (zh) | 2010-03-31 | 2011-03-29 | 支持改善型阻抗匹配的利用电磁耦合的宽频带内置天线 |
US13/637,960 US20130016026A1 (en) | 2010-03-31 | 2011-03-29 | Broadband internal antenna using electromagnetic coupling supporting improved impedance matching |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100029083A KR101120864B1 (ko) | 2010-03-31 | 2010-03-31 | 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 광대역 내장형 안테나 |
KR10-2010-0029083 | 2010-03-31 |
Publications (2)
Publication Number | Publication Date |
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WO2011122821A2 true WO2011122821A2 (ko) | 2011-10-06 |
WO2011122821A3 WO2011122821A3 (ko) | 2011-12-08 |
Family
ID=44720410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2011/002128 WO2011122821A2 (ko) | 2010-03-31 | 2011-03-29 | 개선된 임피던스 매칭을 지원하는 전자기 결합을 이용한 광대역 내장형 안테나 |
Country Status (4)
Country | Link |
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US (1) | US20130016026A1 (ko) |
KR (1) | KR101120864B1 (ko) |
CN (1) | CN102823058B (ko) |
WO (1) | WO2011122821A2 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101379123B1 (ko) * | 2010-12-17 | 2014-03-31 | 주식회사 케이티 | 광대역 단일 공진 안테나 |
KR101332846B1 (ko) * | 2011-01-24 | 2013-11-27 | 주식회사 팬택 | 무선 통신 단말에서의 보청기 호환성을 위한 안테나 |
TW201345050A (zh) * | 2012-04-27 | 2013-11-01 | Univ Nat Taiwan Science Tech | 可雙頻操作之圓極化天線 |
KR101323134B1 (ko) * | 2012-06-01 | 2013-10-30 | 주식회사 이엠따블유 | 안테나 및 이를 포함하는 통신 장치 |
TWI520442B (zh) | 2012-09-19 | 2016-02-01 | Accton Technology Corp | Antenna structure |
US20160236329A1 (en) * | 2015-02-12 | 2016-08-18 | Honeywell International Inc. | Spring-loaded universal transmitter enclosure assisted operation tool |
CN109616760B (zh) * | 2018-12-05 | 2021-05-28 | 歌尔股份有限公司 | 天线装置以及移动终端设备 |
Citations (4)
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JP2004201278A (ja) * | 2002-12-06 | 2004-07-15 | Sharp Corp | パターンアンテナ |
JP2009124355A (ja) * | 2007-11-13 | 2009-06-04 | Furukawa Electric Co Ltd:The | 平行2線アンテナ |
JP2009182608A (ja) * | 2008-01-30 | 2009-08-13 | Toshiba Corp | アンテナ装置及び無線装置 |
KR20090104333A (ko) * | 2008-03-31 | 2009-10-06 | (주)에이스안테나 | 다중 대역에 대한 임피던스 매칭을 지원하는 내장형 안테나 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI113813B (fi) * | 2001-04-02 | 2004-06-15 | Nokia Corp | Sähköisesti viritettävä monikaistainen tasoantenni |
US6819287B2 (en) * | 2002-03-15 | 2004-11-16 | Centurion Wireless Technologies, Inc. | Planar inverted-F antenna including a matching network having transmission line stubs and capacitor/inductor tank circuits |
DE10347719B4 (de) * | 2003-06-25 | 2009-12-10 | Samsung Electro-Mechanics Co., Ltd., Suwon | Innere Antenne für ein mobiles Kommunikationsgerät |
FI118872B (fi) * | 2005-10-10 | 2008-04-15 | Pulse Finland Oy | Sisäinen antenni |
WO2009088231A2 (ko) * | 2008-01-08 | 2009-07-16 | Ace Antenna Corp. | 다중 대역 내장형 안테나 |
CN201383542Y (zh) * | 2009-03-05 | 2010-01-13 | 佳邦科技股份有限公司 | 晶片型天线装置 |
TWI423520B (zh) * | 2009-12-31 | 2014-01-11 | Acer Inc | 行動通訊裝置 |
-
2010
- 2010-03-31 KR KR1020100029083A patent/KR101120864B1/ko active IP Right Grant
-
2011
- 2011-03-29 WO PCT/KR2011/002128 patent/WO2011122821A2/ko active Application Filing
- 2011-03-29 CN CN201180016388.9A patent/CN102823058B/zh not_active Expired - Fee Related
- 2011-03-29 US US13/637,960 patent/US20130016026A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004201278A (ja) * | 2002-12-06 | 2004-07-15 | Sharp Corp | パターンアンテナ |
JP2009124355A (ja) * | 2007-11-13 | 2009-06-04 | Furukawa Electric Co Ltd:The | 平行2線アンテナ |
JP2009182608A (ja) * | 2008-01-30 | 2009-08-13 | Toshiba Corp | アンテナ装置及び無線装置 |
KR20090104333A (ko) * | 2008-03-31 | 2009-10-06 | (주)에이스안테나 | 다중 대역에 대한 임피던스 매칭을 지원하는 내장형 안테나 |
Also Published As
Publication number | Publication date |
---|---|
CN102823058B (zh) | 2016-01-20 |
US20130016026A1 (en) | 2013-01-17 |
KR20110109383A (ko) | 2011-10-06 |
WO2011122821A3 (ko) | 2011-12-08 |
CN102823058A (zh) | 2012-12-12 |
KR101120864B1 (ko) | 2012-03-16 |
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