WO2010028522A1 - Systèmes d'antenne pour terminaux multimédias mobiles, et procédés permettant de les utiliser - Google Patents

Systèmes d'antenne pour terminaux multimédias mobiles, et procédés permettant de les utiliser Download PDF

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Publication number
WO2010028522A1
WO2010028522A1 PCT/CN2008/072336 CN2008072336W WO2010028522A1 WO 2010028522 A1 WO2010028522 A1 WO 2010028522A1 CN 2008072336 W CN2008072336 W CN 2008072336W WO 2010028522 A1 WO2010028522 A1 WO 2010028522A1
Authority
WO
WIPO (PCT)
Prior art keywords
television
antenna
mobile device
mobile
antenna system
Prior art date
Application number
PCT/CN2008/072336
Other languages
English (en)
Inventor
Corbett R. Rowell
Chi Lun Mak
Angus Chi Keung Mak
Original Assignee
Hong Kong Applied Science And Technology Research Institute Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hong Kong Applied Science And Technology Research Institute Co., Ltd filed Critical Hong Kong Applied Science And Technology Research Institute Co., Ltd
Priority to PCT/CN2008/072336 priority Critical patent/WO2010028522A1/fr
Priority to CN2008800001276A priority patent/CN101548429B/zh
Publication of WO2010028522A1 publication Critical patent/WO2010028522A1/fr

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
    • H01Q1/243—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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths
    • 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
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • 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
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Definitions

  • the present description is related, in general, to systems and methods employing antenna designs and, more specifically, to antenna systems for mobile devices.
  • RF Radio Frequency
  • mobile phones Personal Digital Assistants (PDAs)
  • email devices such as BLACKBERR YTM-brand devices
  • mobile televisions/radios mobile televisions/radios
  • PMP Portable Multimedia Players
  • Each such device includes at least one type of antenna.
  • Antennas for these mobile devices are usually divided into two categories — internal and external.
  • An external antenna is an antenna that extends outside of the device.
  • some wire antennas, helical antennas, and monopole antennas are external antennas. Examples include telescoping antennas commonly found in portable stereos and televisions. Other instances of external antennas include pull-out antennas in cell phones.
  • Most external antennas are grounded monopole antennas that use the components within a device, such as a Printed Circuit Board (PCB), as a ground plane.
  • PCB Printed Circuit Board
  • an external antenna is single -banded and has relatively poor multipath performance. In other words, typical external antenna designs only receive signals of a single polarization, whereas in the multipath environment, the polarization of a signal changes.
  • an internal antenna element is usually contained within a device so that it shares space with the other circuitry of the device, and it is not easy to be seen by the user.
  • One kind of internal antenna includes "miniature" antennas. Examples include dielectric loaded antennas, meander-line antennas, Planar Inverted F Antennas (PIFA), and the like.
  • Internal antenna designs often include multi-band designs and multi-polarized designs, and thus typically provide better multipath performance.
  • a concern with internal antennas is that they typically compete for space with the other device circuitry. Internal antennas have found favor in high-frequency applications, such as Global System for Mobile communications (GSM) phones.
  • GSM Global System for Mobile communications
  • the longest GSM wavelength is about 35 cm, so it is possible to make an internal antenna small enough to fit inside a mobile phone.
  • it is difficult to design an internal antenna that operates in the 100 MHz range because the wavelength is over one meter, which, even for a miniaturized antenna, is still too large to fit inside most portable devices.
  • a current mobile television on the market uses a pull-out, telescoping, external antenna with an expensive connector that provides swiveling and positioning.
  • a mobile device providing television reception, includes a screen cover that flips open to reveal the screen and closes to protect the screen.
  • the screen cover conceals an external antenna system that operates at low frequency bands and provides television reception.
  • Some embodiments of the invention provide multi-band performance, which is often not provided with external antenna designs. Some embodiments also provide multi-polarization performance and, therefore, better multi-path performance than typical external antenna designs.
  • Advantages of some embodiments of the invention include improved multipath performance, as well as multi-band performance. Also, some embodiments reduce competition for space in the main body of the device. Another advantage of some embodiments is that the space occupied by the cover is much less intrusive than the space occupied by typical wire antennas.
  • FIGURE 1 is an illustration of an exemplary system, adapted according to one embodiment of the invention
  • FIGURE 2 is an exploded view of the system of FIGURE 1 ;
  • FIGURE 3 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 4 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 5 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 6 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 7 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 8 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 9 is an illustration of an exemplary system adapted according to one embodiment of the invention.
  • FIGURE 10 is an illustration of an exemplary method adapted according to one embodiment of the invention.
  • FIGURE 1 is an illustration of exemplary system 100, adapted according to one embodiment of the invention.
  • System 100 includes a mobile multimedia terminal that provides, among other things, reception for television and/or radio.
  • System 100 includes main body portion 101, flip cover 102, screen 103, user controls 104 and speakers 110.
  • the user opens cover 102 and turns on system 100.
  • System 100 receives the television signal using an antenna (not shown) inside cover 102, and the picture is displayed upon screen 103.
  • System 100 is not limited to television and/or radio, as communication on other frequency bands can also be accommodated.
  • system 100 can be adapted to communicate with a wireless network (e.g., using IEEE 802.11 techniques), a cellular telephone network, or the like.
  • a wireless network e.g., using IEEE 802.11 techniques
  • a cellular telephone network e.g., cellular telephone network, or the like.
  • FIGURE 2 is an exploded view of system 100.
  • Main body portion 101 includes housing 107, which holds and protects the internal electronic components, such as screen 103, circuit board 108, and transducers 109 .
  • Flip cover 102 has two parts that conceal antenna system 105 therebetween.
  • antenna system 105 is disposed on a flexible film, which in this example includes a flexible PCB with copper coated on flexible plastic (polyethylene) and a thickness of 0.2 mm.
  • Antenna system 105 is in communication with circuit board 108 through mini-cable 106, and in this example, is a cable that is small enough to pass through the hinge, connecting cover 102 to main body portion 101.
  • antenna system 105 is located in an area separate from other circuitry it is an external, rather than internal, antenna and does not compete with circuit board 108, screen 103, and transducers 109 for space.
  • flip cover 102 provides an illusion of a lack of an external antenna.
  • FIGURE 3 is an illustration of exemplary system 300, adapted according to one embodiment of the invention.
  • System 300 includes a three-band antenna system located within cover 304.
  • the three-band antenna system includes antenna elements 301 and 302.
  • Antenna element 301 is a single-band element, and it is in communication with Radio Frequency (RF) module 305 through mini-cable 307.
  • RF module 305 is disposed on Printed Circuit Board (PCB) 303, which acts as a ground plane and is located within the module's main body portion.
  • antenna element 301 is used for Wireless Local Area Network (WLAN) communications or BluetoothTM communications that operate at Industrial, Scientific and Medical (ISM) band, e.g. 2.4 - 2.48 GHz.
  • WLAN Wireless Local Area Network
  • ISM Industrial, Scientific and Medical
  • Antenna element 302 is a dual-band antenna element, which is in communication with RF module 306 through mini-cable 308. Antenna element 302 is used to receive television signals in Band III (174 - 240 MHz) and L-band (1452 - 1492 MHz), both of which are used for digital TV reception. However, to conserve space, antenna element 302 is a meander-type element. Thus, the dimensions of cover 304, as well as the dimensions of the mobile device as a whole, can be appropriate for hand-held, portable use. PCB 303 also acts as a ground plane for element 302.
  • FIGURE 4 is an illustration of exemplary system 400 adapted according to one embodiment of the invention.
  • System 400 is another three-band system.
  • system 400 employs a different meander structure for its antenna 402.
  • FIGURE 4 illustrates, in a general sense, that the shapes of antennas in various embodiments can be adapted to the specific design constraints of a given system, such as operating bands and cover size.
  • FIGURE 5 is an illustration of exemplary system 500 adapted according to one embodiment of the invention.
  • Horizontal- vertical structures, such as structure 502 may be especially useful in some embodiments due to their typically good reception in a multi-path environment.
  • FIGURE 6 is an illustration of exemplary system 600 adapted according to one embodiment of the invention.
  • System 600 is another three-band system, similar to the one shown in FIGURE 3. However, system 600 includes the addition of slots 610 - 612. Slots 610 - 612 can be used for impedance matching.
  • FIGURE 7 is an illustration of exemplary system 700 adapted according to one embodiment of the invention.
  • System 700 includes shorting connections 701 and 703.
  • Shorting connections 701 and 703 transform antenna elements 301 and 702 from monopole elements into Planar Inverted F Antenna (PIFA) elements.
  • PIFA Planar Inverted F Antenna
  • FIGURE 8 is an illustration of exemplary system 800 adapted according to one embodiment of the invention.
  • System 800 employs flexible traces 801 and 802 instead of mini-cables.
  • antenna elements 301 and 302 are made of a conductor (usually a metal, such as copper) disposed on a flexible film (shown in FIGURE 2) substrate. Some of the conductor and thin portions of the flexible film are extended beyond the flip cover and coupled to RF modules 305 and 306, thereby providing electrical contact thereto.
  • flexible traces are not mutually exclusive of mini-cables in a given embodiment, as shown by FIGURE 7, which includes mini-cables for feed connections and flexible traces for shorting connections. Any of the features shown above, including slots, shorting connections, and different feed types, can be adapted for use in various embodiments together or separately.
  • FIGURE 9 is an illustration of exemplary system 900 adapted according to one embodiment of the invention.
  • System 900 includes antenna elements 901 - 903, feed connections 904 - 906, and RF modules 907 - 909.
  • antenna elements 901 and 903 have directional diversity but operate in the same band with good isolation between them, typically more than 10 dB isolation.
  • system 900 can be employed in some Multiple Input Multiple Output (MIMO) systems.
  • MIMO Multiple Input Multiple Output
  • a multimedia system that connects to a network using IEEE 802. Hn (or other technique using MIMO) can benefit from the design of system 900.
  • system 900 can receive television and/or radio signals using antenna element 902.
  • FIGURE 10 is an illustration of exemplary method 1000, adapted according to one embodiment of the invention.
  • action 1001 the cover is opened to reveal a screen of the mobile device.
  • the concealed antenna is positioned in a vertical posture.
  • exact verticality is not required, as general verticality is usually sufficient.
  • television broadcast signals are polarized such that they are best received by vertical antenna elements; however, enough verticality to receive a clear signal is usually sufficient to satisfy a human user.
  • action 1002 the user interacts with the mobile device to cause the mobile device to receive television signals using the television antenna and to cause the mobile device to display visual output on the screen based on the received television signals.
  • Action 1002 can include any of a variety of user actions, such as turning the mobile device on, selecting a channel to be received, adjusting the display settings, and the like.
  • the user may change channels and settings and may even switch to receive content from another medium, such as from a WiFi- enabled network.
  • the user may shut down the device, e.g., by powering down and closing the cover.
  • method 1000 is shown as a series of discrete steps, the scope of embodiments is not so limited. Actions may be added, omitted, rearranged, and/or modified. For instance, in some embodiments, the user may open the cover and interact wirelessly with a computer or cellular telephone network before using the television function of the mobile device.
  • Various embodiments of the invention include one or more advantages over prior art solutions. For instance, external antennas for mobile devices, especially for television and radio devices, tend to be large and intrusive in a user's personal space. By contrast, some embodiments of the present invention minimize the amount of space used by external antennas, and the cover used by some embodiments is much less intrusive of a user's personal space than is an erect, wire antenna, which can even pose an eye hazard.
  • some embodiments are multi-polarized, which provides better multipath performance.
  • Multi-polarization is typically not a quality of available external antennas.
  • some embodiments provide the advantages of internal antenna systems while delivering very good television and radio reception.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)

Abstract

La présente invention concerne un dispositif mobile qui comprend un compartiment principal et un couvercle rabattable fixé au compartiment principal. Selon l'invention, le compartiment principal comprend une source et une masse d'antenne radiofréquence (RF), et le couvercle rabattable comprend au moins un système d'antenne multibande qui est en communication avec la source et la masse d'antenne radiofréquence (RF), l'antenne fonctionnant dans au moins une bande de diffusion de télévision.
PCT/CN2008/072336 2008-09-11 2008-09-11 Systèmes d'antenne pour terminaux multimédias mobiles, et procédés permettant de les utiliser WO2010028522A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2008/072336 WO2010028522A1 (fr) 2008-09-11 2008-09-11 Systèmes d'antenne pour terminaux multimédias mobiles, et procédés permettant de les utiliser
CN2008800001276A CN101548429B (zh) 2008-09-11 2008-09-11 移动多媒体终端的天线系统及其使用方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2008/072336 WO2010028522A1 (fr) 2008-09-11 2008-09-11 Systèmes d'antenne pour terminaux multimédias mobiles, et procédés permettant de les utiliser

Publications (1)

Publication Number Publication Date
WO2010028522A1 true WO2010028522A1 (fr) 2010-03-18

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WO (1) WO2010028522A1 (fr)

Families Citing this family (7)

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CN103024102B (zh) * 2011-09-20 2015-04-08 联想移动通信科技有限公司 一种翻盖型移动通信终端
CN102523189A (zh) * 2011-12-27 2012-06-27 中国传媒大学 基于mimo技术的公交电视系统
CN102570010B (zh) * 2012-03-28 2014-09-10 南京信息工程大学 紧凑型高隔离度超宽带双波段天线
CN102820521B (zh) * 2012-07-31 2015-11-25 深圳光启创新技术有限公司 一种内置型天线及电子设备
CN105655688B (zh) * 2016-03-04 2019-07-26 深圳市海蕴新能源有限公司 蓝牙天线
CN106972252B (zh) * 2017-04-30 2023-07-21 电子科技大学 一种手持设备多系统集成式天线
CN111193105A (zh) * 2020-04-09 2020-05-22 杭州涂鸦信息技术有限公司 一种辐射体为异形的天线及设备

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CN1930730A (zh) * 2004-03-12 2007-03-14 索尼爱立信移动通讯有限公司 具有被制造为单片的天线和接地面的可折叠移动电话终端
WO2008051057A1 (fr) * 2006-10-26 2008-05-02 Electronics And Telecommunications Research Institute Antenne à boucle

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Publication number Publication date
CN101548429A (zh) 2009-09-30
CN101548429B (zh) 2012-12-26

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