EP1221203A2 - Dispositif amovible sans fil - Google Patents

Dispositif amovible sans fil

Info

Publication number
EP1221203A2
EP1221203A2 EP00977655A EP00977655A EP1221203A2 EP 1221203 A2 EP1221203 A2 EP 1221203A2 EP 00977655 A EP00977655 A EP 00977655A EP 00977655 A EP00977655 A EP 00977655A EP 1221203 A2 EP1221203 A2 EP 1221203A2
Authority
EP
European Patent Office
Prior art keywords
platform
card
removable
wireless device
antenna
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.)
Withdrawn
Application number
EP00977655A
Other languages
German (de)
English (en)
Inventor
Lionel Wolovitz
Richard J. Horan
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.)
Psion Connect Ltd
Original Assignee
Psion Connect 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
Priority claimed from GBGB9926984.7A external-priority patent/GB9926984D0/en
Application filed by Psion Connect Ltd filed Critical Psion Connect Ltd
Publication of EP1221203A2 publication Critical patent/EP1221203A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1698—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/06—Guiding cards; Checking correct operation of card-conveying mechanisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/08—Feeding or discharging cards
    • G06K13/0806—Feeding or discharging cards using an arrangement for ejection of an inserted card
    • 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
    • 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
    • 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
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices

Definitions

  • This invention relates to a removable wireless device which can be readily inserted into and entirely removed from a computing device.
  • the term 'wireless device' used in this specification refers to any electronic device which includes a wireless reception and/or transmission capability, irrespective of whether or not other (e.g. wire based) forms of communications capabilities are also supported.
  • Applicable wireless formats include, without limitation, the Bluetooth and 802.11 short range radio standards.
  • Providing a conventional notebook computer with wireless communications capabilities can be done in several ways, including for example, the use of a GSM PC Card inserted into the PC Card bay of the notebook computer.
  • One design constraint affecting wireless devices is that an antenna generally has to protrude significantly from the wireless device casing, since that casing is usually metal and would therefore screen incoming and outgoing radiation.
  • an antenna formed on a PC Card also has to extend significantly from the metal casing of the PC Card when in use.
  • antennas which are permanently connected to their associated radio receiver/ transmitter hardware but are hinged and can fold out of a casing for use.
  • An example of this would be a PC Card with a small hinged antenna which is hinged flush with the top of the PC Card when not in use, so that the antenna extends only slightly from the casing of the notebook computer into which the PC Card is inserted.
  • FM radios typically also use a hinged, telescopically extensible antenna. When wireless communications are required, the antenna can be hinged outwards and extended as required.
  • a second kind of design is an antenna which is removable when not in use but which can be readily connected for use.
  • An example would be a clip-on antenna for a PC Card offering wireless capabilities: a small antenna connects to the PC Card body via a high quality electrical connector.
  • the third kind of antenna is the permanently fixed antenna, for example the stub antenna as commonly found on mobile telephones.
  • hinges of hinged antenna can often be readily damaged; removable antenna can be too readily lost and permanently fixed antennas are susceptible to damage.
  • Another disadvantage with conventional designs is that the electrical connectors leading from the antenna to the radio receiver/transmitter circuitry have to carry radio frequency signals with high integrity and are therefore relatively expensive, high quality components.
  • a removable wireless device which is adapted to be insertable and fully removable from a computing device, the wireless device comprising:
  • an analogue radio ampUfier connected to the antenna;
  • a platform on which the antenna and radio ampUfier are mounted the platform being retractable into a casing of the device when the antenna is not in use and extendable out of the casing to enable the antenna to operate effectively;
  • the device further comprises one or more components, mounted on the platform, which perform a digital process.
  • the components By placing at least some of the circuitry which appUes digital processes on the movable platform itself, significant manufacturing advantages can be obtained. For example, where the components perform digital processes such as signal detection or digital demodulation, then placing the components on a platform shared with the analogue radio ampUfier (and generaUy also the radio transceiver) leads to the expensive co-axial connections otherwise needed to bring a radio signal to a radio transceiver placed in the body of the PC Card being entirely eliminated. More generaUy, the component mounted on the platform may perform one or more of the foUowing digital processes: (i) D/A conversion;
  • the component may be a baseband processor and/or a radio transceiver.
  • the term 'computing device' used in this patent specification should be expansively construed to cover any form of data handling device, including without limitation a portable computer, desktop computer, communications device, mobUe telephone, desktop phone, smart phone or communicator.
  • the platform may be a printed circuit board.
  • the platform need not be a single unitary piece: the only requirement is for the part of the platform on which the antenna is attached to be fixed relative to the part of the platform on which the circuitry handling at least some digital signal processes is mounted.
  • An advantage of mounting the antenna on a PCB shared with the related analogue transceiving circuitry and also at least some of the circuitry which can process or handle digital signals is that the required electrical connections can for example be a simple rigid connection such as a connection printed directly onto the printed circuit board.
  • the baseband processor is typically connected via a data connector interface to the computing device via cheap and robust fixed tracks. No high integrity cabUng needed to carry a wireless signal is therefore required at aU in such an implementation.
  • several chips typicaUy a physical interface, a baseband processor, a MAC (Media Access ControUer) and RAM are aU mounted on the retractable platform. Simple and relatively cheap fixed tracks or ribbon connectors then connect the MAC to a standard 68 way PCMCIA connector at the rear face of the card.
  • the platform sUdes within a PC Card casing conforming for example to a PCMCIA standard.
  • the term 'PC Card' as used in this specification refers to any kind of smaU computer peripheral which can be placed into electrical engagement with a computer to provide directly or indirectly additional resources or functions for that computer or enable another connected device to use resources or functions of that computer. It includes cards such as PCMCIA cards, and CompactFlash (CF) cards, which are widely used with many different kinds of computer and offer a vast range of functionaUty, including voice and data communications, and memory expansion.
  • PC Cards conform to precise physical and performance constraints and typicaUy slot into a standard si2ed bay in a computer host.
  • the card may sUde out under the force of a spring ejection mechanism, have a motorised ejector or be merely puUed out manuaUy.
  • a removable wireless device which is adapted to be insertable and fuUy removable from a computing device, the wireless device comprising: (i) an antenna;
  • the device further comprises a sensor which detects the position of the platform and automaticaUy switches the wireless device on if the platform is extended beyond a first position and automaticaUy switches the wireless device off if the platform is retracted beyond a second position.
  • this second aspect envisages a wireless device, which may be a PC Card format device, which automaticaUy switches itself on and off depending on a sensed location of the extension of the antenna. Advantages of this approach are that (i) it does not require any software appUcation to switch on/off the radio and ( ⁇ ) the status of the radio is immediately visible to a user.
  • a PC Card including a removable platform on which is mounted at least one component, the platform being removable from the PC Card to aUow replacement by a platform on which is mounted a replacement or upgraded component by sUding the platform out of an aperture on the PC Card.
  • this third aspect of the present invention is based on the fact that the PC Card can readily operate as a host or base for one or more components which provide important functionaUty or features for the computer to which the PC Card is itself connected.
  • a PC Card could include a Bluetooth antenna and radio module as the removable component.
  • Digital signal processing circuitry and memory might reside permanently in the PC Card or also be removable, depending on the economics of each option.
  • a user need only swap the replaceable, removable component with the upgraded antenna and/or radio module. This wiU be significantly cheaper for the consumer than replacing the entire PC Card.
  • Many other different kinds of components could be included in a PC Card and therefore upgraded in this way.
  • a modular system of different removable components may be avaUable: Having a PC Card with a standard aperture able to receive one of many different kinds of removable components, can significantly reduce manufacturing costs.
  • Figure 1 is an exploded perspective view of a PC Card implementation of the present invention with a radio transceiver and baseband processor modules and an antenna mounted on a platform retractable within the PC Card;
  • Figure 2 is a perspective internal view of the PC Card implementation with the platform fuUy extended
  • Figure 3 is a perspective internal view of the PC Card implementation with the platform fuUy retracted
  • Figure 4 is a perspective internal view of the PC Card implementation with the platform extended and showing the components fixed within the PC Card casing;
  • Figure 5 is a perspective internal view of the PC Card implementation with the platform retracted and showing the components fixed within the PC Card casing;
  • Figure 6 is a perspective external view of the PC Card implementation with the platform extended
  • Figure 7 is a perspective external view of the PC Card implementation with the platform extended
  • Figure 8 is a perspective external view of part of the PC Card implementation showing a part which prevents the platform from being readily fuUy retracted;
  • Figure 9 is a perspective external view of part of the PC Card implementation showing a part which prevents the platform from being reacUly fuUy retracted;
  • Figure 10 is a perspective view of connector tracks used in the PC Card implementation
  • Figure 11 is a schematic of the electronic components used in the PC Card.
  • PCMCIA format card which includes a 802.11 antenna, radio transceiver and baseband processor, aU mounted on a platform which can sUde in and out of the card casing.
  • the card itself can be inserted into a standard PC Card bay in a laptop computer to give 802.11 standard short range radio connectivity for data transfer.
  • the PC Card comprises a top metal cover 1 and a bottom metal cover 11, which provide electromagnetic screening to the electrical components positioned within them.
  • a plastic frame 4 sits between the two metal covers 1 and 11; a fixed PCB 2 is positioned on frame 4 and includes at one end a standard PCMCIA 68 way connector 12, which in use electrically connects the PC Card to the lap top computer (not shown).
  • a grounding cUp 3 is positioned on frame 4 such that when the PC Card is in use, it electricaUy contacts a grounded portion of the PCB 2 and also the top and bottom metal covers 1 and 11, thereby grounding each of those covers 1 and 11.
  • a radio transceiver PCB 9 is a platform which is arranged to sUde in and out of frame 4 approximately 10mm, as shown more clearly in Figures 2 and 3.
  • Radio transceiver PCB 9 has mounted upon it a radio transceiver unit 13; an inverted F antenna 14 and three LEDS 8 which indicate the functioning of the PC Card.
  • Radio transceiver unit 13 is a Bluetooth radio chip such as the BlueCoreOl from Cambridge Silicon radio. Many other vendors also supply Bluetooth radio chips; further information can be found at the Bluetooth.com web site.
  • the Bluetooth radio is a digital radio operating at 2.4GHz.
  • Figures 2 and 3 show respectively the assembled PC Card with the top cover 1 removed and the combined antenna/radio transceiver platform 9 fuUy extended and fuUy retracted. As can be seen, with the platform 9 fully extended, antenna 14 fully protrudes from the card, clear of the shielding offered by the metal covers.
  • Radio transceiver PCB 9 Additional signal processing components are also mounted on the radio transceiver PCB 9, including a baseband processor and RAM.
  • a single component including several discrete chips e.g. RF transceiver, Baseband and Unk manager
  • the Bluemoon component from Infineon AG is one such example.
  • a top radio cover 5 and bottom radio cover 10 is positioned around the end of the radio transceiver PCB 9 which in use may extend out of the PC Card.
  • Inverted F antenna 14 is a slim and cheap form of printed antenna and is therefore very suitable for a slim, low cost product such as a 802.11 or Bluetooth PC Card.
  • Antenna 14 is positioned at the outer edge of the radio transceiver PCB 9 so that it extends substantiaUy from the top and bottom metal covers 1 and 11 when the platform, i.e. the radio transceiver PCB 9, is fuUy extended, as shown in Figures 2 and 7.
  • LEDS 8 need to be visible at the front face of the radio transceiver PCB 9 but cannot overUe the antenna 14 since they and their leads would interfere with radio reception and transmission; LEDS 8 are therefore positioned back from the front face, but a Ught pipe 6 feeds Ught from them to the front face, as more clearly shown in Figures 2 and 3.
  • LED(s) 8 are used in the antenna module to indicate the status or condition of the device, for example the received signal strength, Unk status, and data flow.
  • the LEDs 8 can be modulated in intensity (for example the stronger the received signal, the brighter the LED), or on/off duty cycle (for example the stronger the received signal, the more rapidly the LED bUnks, or is on for longer).
  • the LEDs 8 can for example pulse on for a short period each time a specified amount of data is transmitted or received.
  • the user may specify which status each LED indicates and the means by which this is indicated.
  • a combination of LEDs or multi-colour LED can be used to indicate status, for example colour could be varied from red, through orange to green could be used to indicated signal strength from none, weak through to strong.
  • a sUding connector 7 comprising a comb of eight metal fingers is positioned on the rear of the radio transceiver PCB 9; sUding connector 7 transfers digital signals to and from the signal processing circuitry on radio transceiver PCB 9, to the connector tracks 15, which are formed on the fixed PCB 2, as more clearly shown in Figures 4 and 5.
  • Figure 4 shows the PC Card from the rear; the holes of the PCMCIA 68 way connector 12 are clearly visible; these mate with pins located within the PC Card bay of the laptop computer (not shown).
  • a PCMCIA interface chip 16, mounted on fixed PCB 2 is connected to 68 way connector 12 and receives digital signals passing along printed connector tracks 15 (and vice versa). Connector tracks 15 are in turn electricaUy connected to the 8 way sUding connector 7, as noted above.
  • FIG. 10 shows the detaU of one of the connector tracks 15 in more detaU.
  • a break 19 exists in one connector track; this enables a simple mechanism for sensing the position of the platform to be implemented as foUows: different voltages are appUed to the track 15 on one side of the break 19 as compared to the other side of the break 19. The voltage picked up by the contacting comb of 8 way connector 7 wiU be different depending on which side of the break 19 it is positioned.
  • Suitable signaUing therefore enables the position of the platform 9 to be sensed so that when the platform is puUed out ready for operation, the PC Card is automaticaUy switched on; when the platform is pushed back in, then the appropriate power down process is automaticaUy initiated.
  • This is useful for quick disabling as may be required, for example, on or when entering an aeroplane.
  • the switch off is properly designed so that aU appropriate switch off protocols are foUowed - e.g. remotely connected devices know that the device is being turned off in a controUed manner.
  • One advantage of this approach is that it does not require any software appUcation to switch on/ off the radio and the status of the radio is immediately visible to a user.
  • the antenna When the antenna is to be used, it can be readUy extended by the user gently pushing the front face of the radio covers 5 and 10. This causes a 1-way locking mechanism to be disengaged, aUowing a spring mounted on frame 4 to push platform 9 out. SmaU stops on the platform 9 ensure that it is not extended too far. When the user wishes to turn the wireless device off, then the user simply pushes platform 9 back into the PC Card casing and 1-way locking mechanism engages again.
  • a software upgrade may however sometimes be inappUcable.
  • radio circuitry designed for one standard is not able to conform to the different or higher data speed modulations of a new standard, then a product incorporating that radio circuitry can be rendered obsolete.
  • Some limited forms of hardware upgradeabiUty have been common in the computer field for many years; for example, RAM memory, hard drives and microprocessors can be swapped out and upgraded in many personal computers.
  • engineering a product so that it is readUy upgradeable can add significantly to the complexity of the product and hence its manufacturing cost.
  • profit margins are already highly pressured, making it difficult to justify reducing the margins further by adding upgradeabiUty features which may or may not be attractive to purchasers.
  • the term 'upgraded component' denotes both a component with increased functionaUty and/or specification as weU as a component with a merely different functionaUty and/or specification.
  • the present invention addresses this issue: When the sUdable platform 9 is first mated into the PC Card frame 4 (typicaUy during first manufacture or a user upgrade procedure), a simple sUding engagement is enough to cause an adequate electrical connection between connector comb 7 and connector tracks 15. SUdable platform 9 can be entirely withdrawn without any damage to the PC Card or the sUdable platform 9. This is achieved as foUows: a smaU spring feature 20 (shown in Figure 8) is present on the sUdable platform 9. Feature 20 normaUy engages stop feature 21 (shown in Figure 9), positioned on frame 4, therefore preventing sUdable platform 9 from being fuUy withdrawn from frame 4.
  • a more forceful puU can cause the spring feature 20 to be pushed to one side, aUowing the sUdable platform 9 to be withdrawn past stop feature 21.
  • a sUdable platform 9 with upgraded components can then readUy be sUd into the frame 4, automaticaUy engaging the connector tracks 15 when sufficiently inserted.
  • FIG 11 shows a simpUfied schematic of the main electronic components.
  • digital data is passed into a PCMCIA 68 way interface 12, controUed by PCMCIA interface 16.
  • Digital data passes along fixed connector tracks 15 and is picked up by a siding connector 7 which is fixed to sUdable platform 9.
  • SUdable platform 9 has mounted on it a baseband processor 30 as weU as a radio transceiver chip 13, feeding an antenna 14.
  • the typical transmit sequence is as foUows: source digital data is received at the baseband processor from the laptop. At the baseband processor, the foUowing functions are carried out: first, channel coding occurs.
  • the source digital data is multiplexed with forward error correction and framing bits.
  • the purpose is to add redundancy to the information content so that bit errors can be detected in the receiver.
  • a channel bitstream is generated as a result of the channel coding process. Digital modulation then occurs; the channel bitstream is merged to the signal samples which wUl be transmitted over the 2.4GHz air Unk.
  • the GFSK digital modulation process occurs.
  • the resultant signal is pulse shape filtered and then converted to analogue in a D/A converter.
  • the analogue signal is then upconverted to the required frequency range and ampUfied to the required transmit power.
  • the ampUfied signal is then passed to the antenna for transmission.
  • the reception process is in essence the inverse of the above process.
  • a baseband processor can be used to perform aU steps up to and including the D ⁇ A conversion, including Unk control and management functions, leaving the radio transceiver to perform solely the analogue signal processing functions of upconversion and ampUfication.
  • the radio transceiver chip can itself perform significant digital signal processing tasks, such as modulation/demodulation; carry digital signals such as control logic signals (e.g. for controlUng an ampUfier); and perform digitaUy controUed power management tasks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne une carte d'ordinateur personnel (PC), comprenant une plate-forme d'antenne escamotable sur laquelle est monté au moins un composant, tel qu'un processeur de bande de base, pouvant exécuter des traitements numériques. Le positionnement du composant, qui exécute le traitement numérique, près de l'antenne élimine de recours à une connexion souple et chère qui serait requise si, par exemple, ladite plate-forme comprenait uniquement des composants H.F. Lorsque la plate-forme sort partiellement par coulissement du logement de la carte PC, elle met automatiquement le dispositif sous tension; lorsque ladite plate-forme rentre par coulissement dans le logement de la carte PC, elle met automatiquement de dispositif hors tension. Cette plate-forme peut également être complètement retirée de la carte PC et remplacée par une extension.
EP00977655A 1999-11-15 2000-11-15 Dispositif amovible sans fil Withdrawn EP1221203A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GBGB9926984.7A GB9926984D0 (en) 1999-11-15 1999-11-15 Antenna for a wireless device
GB9926984 1999-11-15
GB0000783A GB0000783D0 (en) 1999-11-15 2000-01-14 Antenna for a wireless device
GB0000783 2000-01-14
PCT/GB2000/004339 WO2001037437A2 (fr) 1999-11-15 2000-11-15 Dispositif amovible sans fil

Publications (1)

Publication Number Publication Date
EP1221203A2 true EP1221203A2 (fr) 2002-07-10

Family

ID=26243399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00977655A Withdrawn EP1221203A2 (fr) 1999-11-15 2000-11-15 Dispositif amovible sans fil

Country Status (4)

Country Link
EP (1) EP1221203A2 (fr)
JP (1) JP2003514482A (fr)
GB (2) GB2357190B (fr)
WO (1) WO2001037437A2 (fr)

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Also Published As

Publication number Publication date
GB0027867D0 (en) 2000-12-27
GB2357189A (en) 2001-06-13
GB2357190A (en) 2001-06-13
GB2357190B (en) 2002-05-01
GB0027881D0 (en) 2000-12-27
WO2001037437A3 (fr) 2002-05-10
JP2003514482A (ja) 2003-04-15
GB2357189B (en) 2001-11-07
WO2001037437A2 (fr) 2001-05-25

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