EP2190065B1 - Wireless terminal and wireless network interface card - Google Patents

Wireless terminal and wireless network interface card Download PDF

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Publication number
EP2190065B1
EP2190065B1 EP09176708.7A EP09176708A EP2190065B1 EP 2190065 B1 EP2190065 B1 EP 2190065B1 EP 09176708 A EP09176708 A EP 09176708A EP 2190065 B1 EP2190065 B1 EP 2190065B1
Authority
EP
European Patent Office
Prior art keywords
slot
network interface
interface card
circuit board
processing circuit
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP09176708.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2190065A1 (en
Inventor
Yanping Xie
Ping LEI
Shuhui Sun
Rao Lan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Device Co Ltd
Original Assignee
Huawei Device Co Ltd
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Filing date
Publication date
Application filed by Huawei Device Co Ltd filed Critical Huawei Device Co Ltd
Publication of EP2190065A1 publication Critical patent/EP2190065A1/en
Application granted granted Critical
Publication of EP2190065B1 publication Critical patent/EP2190065B1/en
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • 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
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • H01Q1/2275—Supports; Mounting means by structural association with other equipment or articles used with computer equipment associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB

Definitions

  • the present invention relates to wireless communications technologies, and in particular, to a wireless network interface card.
  • PCB Printed Circuit Board
  • IFAs Inverted F Antennas
  • PIFAs Planar Inverted F Antennas
  • a slot antenna is provided with at least two conductive plates arranged to face each other.
  • a slot is arranged on one of or both of the facing conductive plates and has a long and narrow opening shape.
  • a power feeding unit is arranged between the facing conductive plates and is electrically and physically connected with the facing conductive plates, respectively. When power is fed to the power feeding unit, the power is fed between the facing conductive plates by the power feeding unit.
  • excitation with a frequency dependent on the electrical length of the slot is induced at the slot, and a current excited at the slot is distributed entirely over one conductive plate.
  • the current becomes a radiation source, and an electromagnetic wave is radiated from the one conductive plate.
  • the other conductive plate operates as the reflecting plate of the electromagnetic wave.
  • the patent US6359591B1 discloses a device for providing wireless communication.
  • the device includes a retractable antenna connected to modem and PC card.
  • the retractable antenna has a locking mechanism for providing a snap lock to maintain the antenna in the extended position during ordinary use and allowing retraction of tile antenna by force when not in use.
  • the retractable antenna has an antenna sleeve which receives the antenna and locks the antenna in the extended position.
  • the antenna also has a pivotal connection for pivoting the antenna and a rotatable connection for rotating the antenna in a direction which differs from the direction of rotation.
  • the antenna is rotatable about two axes and is retractable. In the extended position, the antenna is electrically connected with the PC card and can receive and transmit signals.
  • European patent application EP1056152A2 relates to an expansion card for an electronic device, preferably a card-like wireless communication device, which card comprises a cover surface and a bottom surface as well as an outer surface edging said card, and which card further comprises at least an antenna structure. Said antenna structure is arranged as a flexible strip attaching to said card and extending at least partly outside said outer surface.
  • Japanese patent publication JP07221538 discloses that: a conductor plate having a slot is arranged to one side of a printed circuit board of a wireless card (contactless IC card) and a microstrip line is arranged onto other side orthogonally to the slot. A reception circuit is connected to one end of the microstrip line.
  • the other end of the microstrip line is formed to be L-shape and arranged at a required interval with the slot.
  • the other end acts like a matching stub. Since the antenna is configured in a L shape, the degree of freedom of the arrangement is higher than that of straight line configuration and then the size of the antenna system is made small.
  • Embodiments of the invention intend to provide a wireless network interface card that can effectively save the space used by an antenna and improve the quality of signal transmission.
  • a wireless network interface card includes a network interface card shell and a signal processing circuit board, where:
  • the terminal shell is made of an electrically conductive material with a cavity slot cut on its surface; the terminal shell is connected to the signal processing circuit board and acts as a slot antenna for the signal processing circuit board to receive or transmit signals.
  • the shell structure of a terminal product realizes functions of an antenna. Thus, the space above the board and the cost of mechanical parts are saved, and the terminal shell plays a double role.
  • Embodiments of the present invention provide a wireless network interface card. The embodiments will be described in detail.
  • a wireless terminal includes a terminal shell 110 and a signal processing circuit board 120.
  • the thickness of the terminal shell 110 and how the signal processing circuit board 120 is fixed with the terminal shell 110 are ignored.
  • the fixing may be in such conventional modes such as screwing, clipping or conglutination.
  • the terminal shell 110 is made of an electrically conductive material with a cavity slot 111 cut on its surface.
  • the terminal shell 110 is connected to the signal processing circuit board 120 and acts as a slot antenna for the signal processing circuit board 120 to receive or transmit signals.
  • the wireless terminal may be a wireless communications terminal device such as a handset, a wireless router, a Bluetooth headphone, a Bluetooth adapter or a wireless network interface card.
  • the terminal shell is made of an electrically conductive material with a cavity slot cut on its surface; the terminal shell is connected to the signal processing circuit board and acts as a slot antenna for the signal processing circuit board to receive or transmit signals.
  • the function of an antenna is realized by the indispensable shell of a terminal product with a slot antenna on the shell.
  • a wireless terminal includes a terminal shell 210 and a signal processing circuit board 220.
  • the thickness of the terminal shell 210 and how the signal processing circuit board 220 is fixed with the terminal shell 210 are ignored.
  • the fixing may be in such conventional modes such as screwing, clipping or conglutination.
  • the terminal shell 210 is made of an electrically conductive material with a cavity slot 211 cut on its surface; the electrically conductive material is a metal material or a non-conductive material coated with a conductive medium.
  • the terminal shell is improved to make the terminal shell act as a slot antenna.
  • the material of the terminal shell need meet the requirement for acting as a slot antenna. It is understandable that all materials that enable the terminal shell to act as a slot antenna, including copper, aluminum, alloy, plastic shell interlined with a copper foil, and a plastic shell coated with a metal material.
  • the terminal shell 210 is connected to the signaling processing circuit board 220 and acts as a slot antenna for the signal processing circuit board 220 to transmit or receive signals.
  • the terminal shell 210 is connected to the signal processing circuit board 220 at the feeding point and the ground point of the signal processing circuit board 220. It is understandable that the connection is not limited to this mode and all conventional connection modes that enable the terminal shell to act as a slot antenna of the signal processing circuit board are possible. antenna of the signal processing circuit board are possible.
  • the cavity slot 211 is 2 mm wide. It is understandable that, in view of the regular size of a wireless terminal and basic requirements for acting as a slot antenna, a width of about 2 mm is preferable, and that the practical slot width may be adjusted according to the radio performance, size and appearance requirements of the terminal.
  • the cavity slot 211 may be of a line shape, an arc shape or an S shape.
  • an S-shape slot is adopted in view of the required slot length for a slot antenna.
  • an arc shape or S shape is more effective in space utilization and applicable to terminals with irregular appearances.
  • the suitable slot length is about one fourth of the wavelength corresponding to the central frequency where the signal processing circuit board works. The specific length may be slightly adjusted during product design for a better technical result.
  • a wireless network interface card is provided in an embodiment of the present invention.
  • the wireless network interface card includes a network interface card shell 310 and a signal processing circuit board 320.
  • the thickness of the network interface card shell 310 and how the signal processing circuit board 320 is fixed with the network interface card shell 310 are ignored.
  • the fixing may be in such conventional modes as screwing, clipping or conglutination.
  • the network interface card shell 311 is made of an electrically conductive material with a cavity slot 310 cut on its surface.
  • the network interface card shell 310 is connected to the signal processing circuit board 320 and acts as a slot antenna for the signal processing circuit board 320 to receive or transmit signals.
  • the cavity slot 311 is 2 mm wide. It is understandable that, in view of the regular size of a wireless network interface card and basic requirements for acting as a slot antenna, a width of about 2 mm is preferable, and that the practical slot width may be adjusted according to the size and appearance requirements of the wireless network interface card.
  • the cavity slot 311 may be of a line shape, an arc shape or an S shape in view of the required slot length for acting as a slot antenna.
  • an arc shape or S shape is more effective in space utilization and applicable to wireless network interface cards with irregular appearances.
  • the suitable slot length is about one fourth of the wavelength corresponding to the central frequency where the signal processing circuit board works.
  • the specific length may be slightly adjusted during product design for a better technical result.
  • antennas of 3G wireless network interface cards in service normally work at five frequency bands (824 MHz to 894 MHz, 880 MHz to 960 MHz, 1710 MHz to 1880 MHz, 1850 MHz to 1990 MHz, and 1920 MHz to 2170MHz).
  • the bands are wide and the required effective antenna length is about 85 mm.
  • a slot on a network interface card shell is easily capable of realizing such an effective length in most cases.
  • the usual practice may be as follows: coating a network interface card shell with metal, opening a slot on the metal surface, connecting one longer edge of the slot to the feeding point of the signal processing circuit board through a curved spring and connecting the other longer edge of the slot to the ground point of the signal processing circuit board.
  • the slot may be of a rectangle shape, the length of which depends on its working frequency (usually the initial length is one fourth of the wavelength corresponding to the central frequency of a working band) and the width of which is usually limited to about 2 mm. If a wireless network interface card is short, the slot is not limited to the shape shown in figures below. There may be bents and arcs so as to meet the requirement that the slot length is one fourth of the wavelength corresponding to the central frequency of the working band.
  • function of a slot antenna is realized through adding a slot cut on the surface of the indispensable shell of a terminal product.
  • the description is based on one slot. It is understandable that more than one cavity slot may be cut on the shell according to the requirements for the slot antenna.
  • the slot may be short-circuited at both ends, or short-circuited at one end and open-circuited at the other end, or open-circuited at both ends.
  • the length of a slot and positions of the feeding point and the ground point may be determined according to practical needs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Waveguide Aerials (AREA)
EP09176708.7A 2008-11-24 2009-11-23 Wireless terminal and wireless network interface card Active EP2190065B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008101784010A CN101420060A (zh) 2008-11-24 2008-11-24 无线终端和无线网卡

Publications (2)

Publication Number Publication Date
EP2190065A1 EP2190065A1 (en) 2010-05-26
EP2190065B1 true EP2190065B1 (en) 2013-07-31

Family

ID=40630743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09176708.7A Active EP2190065B1 (en) 2008-11-24 2009-11-23 Wireless terminal and wireless network interface card

Country Status (2)

Country Link
EP (1) EP2190065B1 (zh)
CN (1) CN101420060A (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101800361A (zh) * 2010-03-23 2010-08-11 中兴通讯股份有限公司 一种无线设备
CN102447563A (zh) * 2010-10-12 2012-05-09 上海德门电子科技有限公司 一种对称设置的双天线网卡
TWI581498B (zh) 2012-06-15 2017-05-01 群邁通訊股份有限公司 天線及具該天線的無線通訊裝置
CN103515692B (zh) * 2012-06-19 2019-11-01 深圳富泰宏精密工业有限公司 天线及具有该天线的无线通信装置
CN103259081B (zh) * 2013-04-12 2016-04-20 广东欧珀移动通信有限公司 移动终端的缝隙天线装置及移动终端
KR20150029172A (ko) * 2013-09-09 2015-03-18 삼성전자주식회사 안테나유닛을 구비한 신호중계장치
CN104767031B (zh) * 2014-01-06 2018-12-14 联想(北京)有限公司 移动通信终端天线系统、移动通信终端
CN105680153B (zh) * 2016-03-18 2019-02-15 努比亚技术有限公司 一种天线和终端
CN106374192B (zh) * 2016-10-25 2019-11-19 瑞声科技（南京）有限公司 天线组件及移动终端
JP6971163B2 (ja) * 2018-02-13 2021-11-24 株式会社ヨコオ アンテナ装置
CN112886219B (zh) 2019-11-30 2022-05-10 华为技术有限公司 无线耳机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000062432A1 (en) * 1999-04-14 2000-10-19 Ericsson, Inc. Personal communication terminal with a slot antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07221538A (ja) 1994-01-31 1995-08-18 Nippon Signal Co Ltd:The スロットアンテナ装置
FI991218A (fi) 1999-05-28 2000-11-29 Nokia Mobile Phones Ltd Elektroniikkalaitteen laajennuskortin antennirakenne
US6359591B1 (en) 2000-10-19 2002-03-19 Sierra Wireless, Inc. Locking antenna for personal computer card
FR2853996A1 (fr) * 2003-04-15 2004-10-22 Thomson Licensing Sa Systeme d'antennes
JP5088689B2 (ja) * 2005-11-18 2012-12-05 日本電気株式会社 スロットアンテナ及び携帯無線端末
TW200721588A (en) * 2005-11-30 2007-06-01 Quanta Comp Inc Portable communication device
EP1950834B1 (en) * 2007-01-24 2012-02-29 Panasonic Corporation Wireless module with integrated slot antenna

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000062432A1 (en) * 1999-04-14 2000-10-19 Ericsson, Inc. Personal communication terminal with a slot antenna

Also Published As

Publication number Publication date
EP2190065A1 (en) 2010-05-26
CN101420060A (zh) 2009-04-29

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