WO2008152180A1 - Structure d'antenne interne de téléphone portable - Google Patents
Structure d'antenne interne de téléphone portable Download PDFInfo
- Publication number
- WO2008152180A1 WO2008152180A1 PCT/FI2007/050358 FI2007050358W WO2008152180A1 WO 2008152180 A1 WO2008152180 A1 WO 2008152180A1 FI 2007050358 W FI2007050358 W FI 2007050358W WO 2008152180 A1 WO2008152180 A1 WO 2008152180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ground plate
- antenna structure
- internal antenna
- radiator
- blocking element
- Prior art date
Links
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
- H01Q1/24—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
- H01Q1/245—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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- 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
-
- 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 invention relates to an internal antenna structure of a mobile phone, a mobile phone, and a method of manufacturing an internal antenna structure.
- An object of the invention is to provide an improved internal antenna structure of a mobile phone and a method of manufacturing such an antenna structure.
- an internal antenna structure of a mobile phone comprising: a radiator element and a ground plate configured to form a monopole-type antenna; and a blocking element electrically coupled to the ground plate and configured to reduce ra- diation power entering user's head from the ground plate based on destructive interference between the ground plate and the blocking element.
- a mobile phone comprising an internal antenna structure, wherein the internal antenna structure comprises: a radiator element and a ground plate configured to form a monopole-type antenna; and a blocking element electrically coupled to the ground plate and configured to reduce radiation power entering user's head from the ground plate based on destructive interference between the ground plate and the blocking element.
- a method of manufacturing an internal antenna structure of a mobile phone comprising: configuring a radiator element and a ground plate to form a monopole-type antenna; coupling electrically a blocking element to the ground plate; and configuring the blocking element to reduce radiation power entering user's head from the ground plate based on destructive interference between the ground plate and the blocking element.
- the invention provides several advantages.
- the internal antenna structure provides with an efficient antenna for mobile phone radio communication with reduced radiation power towards the user's head.
- Figure 2 illustrates an internal antenna structure from the top
- Figure 3 is a perspective view of an internal antenna structure
- Figure 4 shows a first example of a mobile phone according to an embodiment of the invention
- Figure 5 shows a second example of a mobile phone according to an embodiment of the invention
- Figure 6 is a flow chart presentation of an example of a methodology of manufacture of an internal antenna structure.
- the internal antenna structure 100 includes a monopole-type antenna which comprises a ground plate 102 and a radiator element 106.
- a radio frequency between the ground plate 102 and the radiator element 106 is generated by a modulating element (MOD) 108, such as a radio frequency front-end.
- MOD modulating element
- the ground plate 102 and the radiator element 106 are electrically and physically coupled to form a monopole-type antenna.
- the radiator element 106 and the ground plate 102 are gal- vanically isolated from each other, or the impedance between the radiator ele- ment 106 and the ground plate 102 is very high at the operating frequency.
- a monopole-type antenna provides advantages, such as a wider bandwidth, than a PIFA (Planar Inverted F-Antenna).
- a monopole-type antenna may be sized smaller than PIFAs, thus making a monopole-type antenna an attracting choice for internal mobile phone antenna applications.
- the monopole-type antenna is an antenna structure where the radiator element 106 extends from the ground plate 102 such that the radiator element 106 is substantially in a non-overlapping position relative to the ground plate 102 when observed from the direction of the normal of the ground plate 102.
- Figure 1 illustrates such a configuration.
- the monopole-type antenna may be made thin and configured suitable for internal mobile phone antenna applications.
- the monopole-type antenna is a monopole antenna.
- the monopole-type antenna is an inverted F-antenna (IFA).
- the monopole-type antenna is an inverted L-antenna (ILA).
- ILA inverted L-antenna
- more than half of the radiator element 106 is in a non-overlapping position relative to the ground plate 102 when observed from the direction of the normal of the ground plate 102.
- the radiator element 106 is made of conductive material, such as aluminium, copper, stainless steel, electrically conductive ink and/or magnesium.
- the radiator element 106 is typically a planar member whose plane is separated from the plane of the ground plate 102. The plane of the radiator element 106 may be parallel to the ground plate 102. Such a situation is illustrated in an internal antenna structure 200 shown Figure 2.
- the radiator element 106 may comprise a slot structure for provid- ing the radiator element 106 with desired frequency characteristics.
- the ground plate 102 may be integrated into a circuit board, such as an engine printed wired board or a main printed wired board.
- the radiator element 106 may be fixed to the substrate material extension 202 of the circuit board. In an embodiment of the invention, the radiator element 106 is fixed to the housing or other mechanics of the mobile phone.
- the radiator element 106 is a conductive pattern formed on the surface of a printed circuit board of the mobile phone.
- the ground plate 102 acts as a substantial source of electromagnetic radiation.
- the internal antenna structure 100 also comprises a blocking element 104 electrically coupled to the ground plate 102.
- a blocking element may also be referred to as a parasitic element.
- the radio frequency electromagnetic waves emitted by the blocking element 104 and the radio frequency electromagnetic waves emitted by the ground plate 102 interfere destructively, thus reducing the radiation power entering the user's head.
- the blocking element 104 is situated between the ground plate 102 and the user's head during a normal use situation of the mobile phone.
- the blocking element 104 typically comprises a blocking radiator
- the current phase of the blocking radiator 1 12 is opposite to that of the ground plate 102. In such a case, the electromagnetic waves emitted by the blocking radiator 1 12 at least partially cancel those emitted by the ground plate 102.
- the blocking radiator 1 12 may be fixed to a separator part 114 which separates the blocking radiator 1 12 from the ground plate 102.
- the separation between the ground plate 102 and the blocking radiator 1 12 may be in the order of a few millimeters, such as 2 to 3 millimeters. The relatively small separation enables the internal antenna structure to be implemented as a thin structure suitable for mobile phones.
- the blocking element 104 is electrically coupled to a radiation concentration region 1 10 of the ground plate 102 and located between the ground plate 102 and the user's head in a use situation of the mobile phone.
- the radiation concentration region may also be referred to as a hot spot, whose location may be predicted based on the dimensions of the ground plate and the wave length associated with the electromagnetic radiation, simulations, or by measuring the density of electromagnetic fields in the proximity of the ground plate 102.
- the blocking element 104 is electrically coupled to the central region 204 of the ground plate 102 and located between the ground plate 102 and the user's head in a use situation of the mobile phone.
- the blocking radiator 302 may be a planar structure parallel to the plane of the ground plate 102.
- the blocking radia- tor 302 may further be shaped in a U-shape with open ends 308A, 308B.
- the blocking radiator 302 typically comprises side stripes 310A, 310B which may be separated from each other as much mobile phone housing allows.
- the open ends 308A, 308B are directed towards the radiator element 106.
- FIG. 3 further shows an internal antenna structure 300 equipped with tuning elements 304A, 304B between the ground plate 102 and the blocking radiator 302.
- the tuning elements 304A, 304B may be coils which affect the resonance frequency of the blocking radiator 302.
- Figure 4 shows a mobile phone 400 with user interface components, such as a microphone 404 and an earpiece 402.
- the cover 406 faces towards the user's head during normal use situation of the mobile phone 400.
- the blocking element 302 is located between a cover 406 and the ground plate 102 in order to reduce the electromagnetic wave entering the user's head.
- Figure 5 shows an embodiment, where the blocking element 302 is integrated into a keypad or keyboard mask or the inner surface of the front cover of the mobile phone 500.
- Figure 6 embodiments of the method of manufacturing an internal antenna structure are illustrated with a flow chart presentation.
- a radiator element 106 and a ground plate 102 are config- ured to form a monopole-type antenna.
- the radiator element 106 extends from the ground plate 102 such that the radiator element 106 is in a non- overlapping position relative to the ground plate 102 when observed from the direction of the normal of the ground plate 102.
- a blocking element 104 is electrically coupled to the ground plate 102.
- the blocking element 104 is electrically coupled to the radiation concentration region 110 of the ground plate 102 and located between the ground plate 102 and the user's head in a use situation of the mobile phone. In an embodiment of the invention, the blocking element 104 is electrically coupled to the central region of the ground plate 102 and located between the ground plate 102 and the user's head in a use situation of the mobile phone. In an embodiment of the invention, the blocking element 104 is configured to provide a different current phase relative to the current phase of the ground plate 102, thus reducing radiation power from radiating towards the user's head.
- the blocking element 104 com- prises a planar structure which acts as a blocking radiator 1 12 parallel to the plane of the ground plate 102.
- the blocking radiator 1 12 is U- shaped with open ends 308A, 308B.
- the open ends 308A, 308B are directed towards the radiator element 106.
- the blocking element 104 is configured to reduce radiation power entering the user's head from the ground plate 102 based on destructive interference between the ground plate 102 and the blocking element 104.
Abstract
La présente invention concerne une structure d'antenne interne de téléphone portable ; elle comprend : un élément de radiateur (106) et une plaque de mise à la terre (102) configurée pour former une antenne de type monopole ; un élément de blocage (302) électriquement couplé à la plaque de mise à la terre (102) et configuré pour réduire la puissance de radiation qui pénètre dans la tête de l'utilisateur depuis la plaque de mise à la terre (102) en se basant sur l'interférence destructive située entre la plaque de mise à la terre (102) et l'élément de blocage (302).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FI2007/050358 WO2008152180A1 (fr) | 2007-06-14 | 2007-06-14 | Structure d'antenne interne de téléphone portable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FI2007/050358 WO2008152180A1 (fr) | 2007-06-14 | 2007-06-14 | Structure d'antenne interne de téléphone portable |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008152180A1 true WO2008152180A1 (fr) | 2008-12-18 |
Family
ID=40129282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2007/050358 WO2008152180A1 (fr) | 2007-06-14 | 2007-06-14 | Structure d'antenne interne de téléphone portable |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2008152180A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011159416A1 (fr) * | 2010-06-18 | 2011-12-22 | Motorola Mobility, Inc. | Système d'antenne avec élément parasite pour une émission électromagnétique compatible avec les prothèses auditives |
EP2439853A3 (fr) * | 2010-10-08 | 2014-05-07 | BlackBerry Limited | Dispositif de communication mobile sans fil incluant des éléments allongés écartés pour réduire le SAR et procédés correspondants |
WO2017018851A1 (fr) * | 2015-07-29 | 2017-02-02 | Samsung Electronics Co., Ltd. | Antenne interne de dispositif d'affichage |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1152481A2 (fr) * | 2000-04-20 | 2001-11-07 | Sony Corporation | Dispositif d'antenne et appareil de communiation sans fil portable |
EP1170821A2 (fr) * | 2000-07-05 | 2002-01-09 | Sony Corporation | Dispositif d'antenne |
US20040046701A1 (en) * | 2001-03-07 | 2004-03-11 | Stefan Huber | Radio communications device comprising an sar value-reducing correction element |
DE10248756A1 (de) * | 2002-09-12 | 2004-03-18 | Siemens Ag | Funkkommunikationsgerät mit reduziertem SAR-Wert |
US20040130492A1 (en) * | 2002-02-27 | 2004-07-08 | Kiyoshi Egawa | Antenna device for radio apparatus |
EP1796207A1 (fr) * | 2004-09-28 | 2007-06-13 | Matsushita Electric Industrial Co., Ltd. | Dispositif d antenne d appareil radio et appareil radio portable |
-
2007
- 2007-06-14 WO PCT/FI2007/050358 patent/WO2008152180A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1152481A2 (fr) * | 2000-04-20 | 2001-11-07 | Sony Corporation | Dispositif d'antenne et appareil de communiation sans fil portable |
EP1170821A2 (fr) * | 2000-07-05 | 2002-01-09 | Sony Corporation | Dispositif d'antenne |
US20040046701A1 (en) * | 2001-03-07 | 2004-03-11 | Stefan Huber | Radio communications device comprising an sar value-reducing correction element |
US20040130492A1 (en) * | 2002-02-27 | 2004-07-08 | Kiyoshi Egawa | Antenna device for radio apparatus |
DE10248756A1 (de) * | 2002-09-12 | 2004-03-18 | Siemens Ag | Funkkommunikationsgerät mit reduziertem SAR-Wert |
EP1796207A1 (fr) * | 2004-09-28 | 2007-06-13 | Matsushita Electric Industrial Co., Ltd. | Dispositif d antenne d appareil radio et appareil radio portable |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011159416A1 (fr) * | 2010-06-18 | 2011-12-22 | Motorola Mobility, Inc. | Système d'antenne avec élément parasite pour une émission électromagnétique compatible avec les prothèses auditives |
US20110312393A1 (en) * | 2010-06-18 | 2011-12-22 | Motorola, Inc. | Antenna system with parasitic element for hearing aid compliant electromagnetic emission |
CN102948014A (zh) * | 2010-06-18 | 2013-02-27 | 摩托罗拉移动有限责任公司 | 具有用于助听兼容性电磁发射的寄生元件的天线系统 |
US8483415B2 (en) * | 2010-06-18 | 2013-07-09 | Motorola Mobility Llc | Antenna system with parasitic element for hearing aid compliant electromagnetic emission |
US20130273963A1 (en) * | 2010-06-18 | 2013-10-17 | Motorola Mobiltiy LLC | Antenna system with parasitic element for hearing aid compliant electromagnetic emission |
US8605922B2 (en) | 2010-06-18 | 2013-12-10 | Motorola Mobility Llc | Antenna system with parasitic element for hearing aid compliant electromagnetic emission |
CN102948014B (zh) * | 2010-06-18 | 2015-02-18 | 摩托罗拉移动有限责任公司 | 具有用于助听兼容性电磁发射的寄生元件的天线系统 |
EP2439853A3 (fr) * | 2010-10-08 | 2014-05-07 | BlackBerry Limited | Dispositif de communication mobile sans fil incluant des éléments allongés écartés pour réduire le SAR et procédés correspondants |
WO2017018851A1 (fr) * | 2015-07-29 | 2017-02-02 | Samsung Electronics Co., Ltd. | Antenne interne de dispositif d'affichage |
US10153808B2 (en) | 2015-07-29 | 2018-12-11 | Samsung Electronics Co., Ltd. | Internal antenna of display |
US10574299B2 (en) | 2015-07-29 | 2020-02-25 | Samsung Electronic Co., Ltd. | Internal antenna of display |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108461902B (zh) | 三宽带混合lte隙缝天线 | |
JP4510012B2 (ja) | 複数の共振周波数帯域を有したループ型マルチ・ブランチ平面アンテナおよびそれを組み込んだ無線端末 | |
Chi et al. | Internal compact dual-band printed loop antenna for mobile phone application | |
JP3658639B2 (ja) | 表面実装型アンテナおよびそのアンテナを備えた無線機 | |
KR101919840B1 (ko) | 휴대용 단말기의 광대역 가변 안테나 장치 | |
KR101071621B1 (ko) | 안테나 장치 및 이것을 사용한 통신 기기 | |
KR101928989B1 (ko) | 휴대용 단말기의 안테나 장치 | |
JP4297164B2 (ja) | アンテナ構造およびそれを備えた無線通信機 | |
Komulainen et al. | A frequency tuning method for a planar inverted-F antenna | |
KR20040099274A (ko) | RF 간섭을 감소하기 위한 이용 방법 및PIFA-Type 형 장치 | |
JP2004007345A (ja) | 広帯域チップアンテナ | |
KR20040004285A (ko) | 적층구조의 내장형 다중대역 안테나 | |
JP2003318640A (ja) | マルチバンド内蔵アンテナ | |
KR20020084283A (ko) | 복수의 안테나를 갖는 무선 단말기 | |
US20030174093A1 (en) | Antenna arrangement on a mobile communication terminal, in particular a mobile telephone | |
Kim et al. | Design of a compact tri-band PIFA based on independent control of the resonant frequencies | |
KR20030090141A (ko) | 신호간섭 배제특성을 개선한 표면실장형 칩 안테나 및이를 사용하는 이동통신 장치 | |
Wong et al. | Internal GSM/DCS antenna backed by a step-shaped ground plane for a PDA phone | |
WO2008152180A1 (fr) | Structure d'antenne interne de téléphone portable | |
Rhyu et al. | Multi-band hybrid antenna for ultra-thin mobile phone applications | |
US8362957B2 (en) | Radiation pattern control | |
EP1973193B1 (fr) | Dispositif d'antenne multibande, élément parasite et dispositif de communication | |
JP2005269301A (ja) | 内蔵アンテナおよびこれを有する電子機器 | |
US8199058B2 (en) | Antenna system with PIFA-fed conductor | |
Hsu et al. | Seven‐band folded‐loop chip antenna for WWAN/WLAN/WiMAX operation in the mobile phone |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07788743 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07788743 Country of ref document: EP Kind code of ref document: A1 |