WO2003063293A1 - Dispositif de réception et terminal de téléphonie mobile avec un tel dispositif de réception - Google Patents
Dispositif de réception et terminal de téléphonie mobile avec un tel dispositif de réception Download PDFInfo
- Publication number
- WO2003063293A1 WO2003063293A1 PCT/FR2003/000240 FR0300240W WO03063293A1 WO 2003063293 A1 WO2003063293 A1 WO 2003063293A1 FR 0300240 W FR0300240 W FR 0300240W WO 03063293 A1 WO03063293 A1 WO 03063293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reception
- sensors
- antenna
- processing
- stages
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
Definitions
- the present invention relates to a reception device for a mobile telephone terminal. It also relates to a mobile telephone terminal provided with such a reception device.
- Such a terminal can be provided with antennas having a wire structure, in helix, in plate, ....
- the principle of operation of these antennas implies that their dimensions are related to the wavelength of radio waves that they capture. Therefore, such antennas have a significant size.
- one of the major concerns of telecommunications operators is to optimize the link between the receiver and the transmitter, namely the base station with which the terminal communicates, in order to allow a good quality of service and a sufficiently high data rate, taking into account the technical constraints imposed on them, linked in particular to the narrowness and cost of the usable radio frequency spectrum.
- optimizing the radio link involves optimizing the information rate between the transmitter and the receiver and, in particular, minimizing the rate of transmission errors. More specifically, for a mobile telephone terminal, improving the reception speed is a major concern of telecommunications operators.
- Another objective is to improve the link budget so as to optimize the range of the terminal, or to minimize the electrical energy consumption of the terminals.
- the object of the invention is to provide a reception device for a mobile telephone terminal making it possible to increase the performance of the terminal antenna, and this with a relatively small footprint.
- a reception device for a mobile telephone terminal comprising an antenna connected to a circuit for receiving and processing the radio waves picked up by the antenna.
- the antenna is constituted by a multisensor antenna adapted to obtain a predetermined level of spatial diversity and the sensors of which are connected in parallel to the reception and processing circuit.
- the reception and processing circuit comprises a set of reception and processing stages connected in parallel, to which the sensors of the multisensor antenna are connected.
- the signal-to-noise ratio is increased and the speed is optimized. information to the receiving device.
- the range of the terminal is improved as well as its autonomy.
- the number of reception and processing stages corresponds to the number of sensors of the antenna to which they are respectively connected.
- the multisensor antenna includes a set of broadband sensors whose bandwidth corresponds to the operating frequency range of the reception device, the reception and processing stages being constituted by single-band circuits each adapted for reception and processing of radio waves picked up by the antenna according to a frequency range corresponding to a mode of operation of the receiver and which are each connected to all the sensors of the multisensor antenna.
- the multisensor antenna comprises a set of broadband sensors, the reception and processing stages being constituted by broadband circuits, the bandwidth of the sensors and reception and processing stages corresponding to the operating frequency range of the reception device.
- it includes means for adjusting the operating frequency band of each reception and processing stage.
- the multisensor antenna comprises several stages of single-band sensors, the stages of sensors each having a bandwidth corresponding to an operating range of the reception device.
- the sensors of each stage are jointly adapted to obtain said level of spatial diversity.
- the reception and processing stages each have a bandwidth corresponding to the operating range of the reception device, each stage of sensors being connected to all of the reception and treatment stages.
- the multisensor antenna and the reception and processing circuit are integrated into an integrated circuit chip.
- the invention also relates to a mobile telephone terminal, comprising a device for transmitting and a device for receiving radio waves connected to telephone circuits, according to which the receiving device is constituted by a receiving device such as defined above.
- the transmitting and receiving devices consist respectively of distinct and separate telephony circuits.
- FIG. 1 is a perspective view of a telephony terminal produced in accordance with the invention
- FIG. 2 is a perspective view of the motherboard of the telephony terminal of FIG. 1, showing the installation of the reception device with which the terminal of FIG. 1 is provided;
- FIG. 3 is a block diagram illustrating a first embodiment of the device for receiving the terminal of FIG.
- FIG. 4 schematically illustrates another embodiment of a device for receiving radio waves in accordance with the invention
- FIG. 5 illustrates a third embodiment of a reception device according to the invention.
- FIG. 6 is a block diagram of a fourth embodiment of a reception device according to the invention.
- FIG. 1 a telecommunication terminal according to the invention is shown, designated by the general reference 10.
- the telecommunications terminal 10 is constituted by a personal assistant or
- PDA portable telecommunication terminal
- the terminal 10 essentially comprises a box 12 comprising a lower part 14 and an upper part 16 articulated one on the other and incorporating respectively, on the one hand, a motherboard 18 and a keyboard 20 and, on the other hand, a screen (not shown).
- the motherboard 18 includes a set of electronic circuits mounted on an integrated circuit card comprising, in particular, a central unit associated with mobile telephone circuits and memories, generally designated by the reference digital 22, and a device for receiving radio waves comprising an antenna with several sensors 24, 26, 28 and 30, dedicated to the reception of radio waves.
- the motherboard 18 incorporates a device for transmitting radio waves comprising an antenna associated with mobile telephone circuits jointly ensuring the transmission of radio signals to a base station of a cell of a telephone network. cell with which the terminal 12 communicates.
- the transmission device of the terminal 12 namely the transmitting antenna as well as the transmission circuits associated therewith, have not been shown in FIG. 2. It will however be noted that, preferably , it consists of separate telephone circuits separate from the circuits of the receiving device.
- the antenna of the reception device of the terminal 12 which receives the radio waves coming from the base station of the cell of the network in which the terminal is located , is constituted by a multisensor antenna mounted on the motherboard 18.
- the multisensor antenna used for producing the reception device according to the invention comprises a set of sensors 24, 26, 28 and 30, of the conventional type, within the reach of a person skilled in the art. They will therefore not be described in detail below. It should nevertheless be noted that they are preferably made in the form of SMD components, that is to say components for surface mounting or in the form of integrated components mounted on a silicon chip, itself implanted on the motherboard 18.
- the sensors 24, 26, 28 and 30 of the antenna are positioned on the motherboard 18 so as to obtain a level of spatial diversity allowing the obtaining of a bit rate level or of a range sufficient for obtaining an acceptable link between the terminal and the base station with which the terminal 12 communicates.
- the sensors 24, 26, 28 and 30 each consist of single-band sensors, that is to say sensors having a narrow passband centered on the operating frequency of the receiving device or, in other words, of the sensors chosen so that their band bandwidth corresponds to the frequency of the standard of the mobile telecommunications system to which the terminal belongs.
- Each sensor 24, 26, 28 and 30 is connected to a circuit 32, 34 for receiving and processing the radio waves received by the sensors, arranged in the form of a set of reception and processing stages connected in parallel on a diversity processing processor 35 adapted to extract from the set of signals from the reception and processing circuit 32, 34, a single signal corresponding to the signal as it is transmitted by the base station.
- Each reception and processing circuit 32, 34 also consists of a single-band circuit, the bandwidth of which substantially corresponds to the bandwidth of the sensor 24, ..., 30, to which it is connected.
- each reception and processing circuit 32, 34 comprises a low noise amplification and filtering circuit (LNA) 36 connected, at output, to a mixer circuit 38, which is associated with a local oscillator ( NCO) 39 and which is itself connected to a demodulation circuit 40 and to an analog / digital converter (CA ⁇ ).
- LNA low noise amplification and filtering circuit
- NCO local oscillator
- CA ⁇ analog / digital converter
- the antennas and the reception and processing circuits are integrated on the same motherboard, it is possible to connect the sensors as close as possible to these circuits, which further contributes to avoiding power losses at very high frequency. It is indeed possible, according to this arrangement, to couple the sensors and the reception and processing circuits so that they are approximately 1 or 2 mm apart, or, in general, that they are separated from a distance corresponding to approximately two dimensions of a CMS component.
- the coupling of the signals received from the base stations only takes place at the output of the reception and processing circuits 32, 34 and therefore only concerns digital signals. It is also possible, thanks to this arrangement, to optimize the impedance matching, that is to say to optimize it to a value leading to an optimum power transfer, insofar as one overcomes constraints linked to specific connection requirements generated by an antenna connection.
- the antenna and the reception and processing circuits associated therewith are constituted by single-band elements whose bandwidth is centered on the operating frequency of the reception device.
- Such an arrangement can also be used for telecommunications terminals capable of operating according to different standards, such as the GSM standard (“Global System for Mobile communications”, in English), the HiperLAN standard (“High performance radio LAN “in English), the UMTS standard (“ Universal Mobile Telecommunication System “in English), or the standard known as” Bluetooth ", while having increased spatial diversity, that is to say according to operating modes according to each of which the reception device receives signals from a transmitter at a specific frequency.
- GSM Global System for Mobile communications
- HiperLAN standard High performance radio LAN "in English
- UMTS Universal Mobile Telecommunication System "in English
- Bluetooth the standard known as
- the reception device is produced in the form of four sets of four single-band sensors each connected to a corresponding reception and processing circuit, each set presenting an operating frequency corresponding to the frequency of the transmission mode considered.
- the reception device therefore has four operating modes while retaining a sufficient level of spatial diversity to obtain optimum data transfer.
- wide-band sensors 44, ... 46 are used, capable of covering the entire frequency range corresponding to the four above-mentioned operating modes, for example the frequency range from 1.8 GHz to 5 GHz.
- the sensors 44, ..., 46 are then connected to four sets of reception and processing circuits, such as 48 and 50, each dedicated to one of the operating modes considered and each comprising four reception and processing circuits. single band, identical to those described above with reference to FIG. 3, the sensors being connected to sets 48, 50 of reception and processing circuits by means of filters corresponding to the operating frequency of the latter.
- each set of single-band sensors such as 52 and 54, are used, each set having a frequency corresponding to one of the telecommunication modes, and four reception and processing circuits
- FIG. 6 making it possible to further simplify the architecture of the reception device according to the invention, four sensors 56, ..., 58 are used.
- broadband or multiband that is to say having a range of operating frequencies covering the entire frequency range of the various modes envisaged.
- broadband reception and processing circuits 60, ..., 62 are used, to which the sensors 56, ..., 58 are respectively connected.
- the modulation circuits entering into the constitution of the reception and processing circuits 64, ..., 66 are adapted to carry out demodulation in parallel of the different signals received from the sensors and comprise therefore as many exits as there are modes of operation envisaged.
- a reception device according to which all the envisaged operating modes can be implemented simultaneously, in parallel, while benefiting from the diversity effect.
- demodulation circuits are provided each having only one output, that is to say that they are capable of demodulating signals only in one mode at a time. Such an arrangement makes it possible to reduce the complexity of the demodulator circuits entering into the constitution of the reception and processing circuits.
- the reception device is equipped with means for adjusting the bandwidth of the device, for example reception and processing circuits, so as to adjust them all on the same frequency band, the signals from the different demodulators being recombined, after analog or digital conversion.
- means for adjusting the bandwidth of the device for example reception and processing circuits, so as to adjust them all on the same frequency band, the signals from the different demodulators being recombined, after analog or digital conversion.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/502,781 US20050239492A1 (en) | 2002-01-25 | 2003-01-24 | Reception device and mobile telephone terminal with such a reception device |
EP03717352A EP1468470A1 (fr) | 2002-01-25 | 2003-01-24 | DISPOSITIF DE RÉCEPTION ET TERMINAL DE TÉLÉPHONIE MOBILE AVEC UN TEL DISPOSITIF DE RÉCEPTION |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02/00944 | 2002-01-25 | ||
FR0200944A FR2835367A1 (fr) | 2002-01-25 | 2002-01-25 | Dispositif de reception pour terminal de telephonie mobile et terminal de telephonie mobile pour un tel dispositif de reception |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003063293A1 true WO2003063293A1 (fr) | 2003-07-31 |
Family
ID=27589585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000240 WO2003063293A1 (fr) | 2002-01-25 | 2003-01-24 | Dispositif de réception et terminal de téléphonie mobile avec un tel dispositif de réception |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050239492A1 (fr) |
EP (1) | EP1468470A1 (fr) |
CN (1) | CN1623249A (fr) |
FR (1) | FR2835367A1 (fr) |
WO (1) | WO2003063293A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5903821A (en) * | 1995-07-13 | 1999-05-11 | Sony Corporation | Portable telephone with microstrip antennas |
US5905467A (en) * | 1997-07-25 | 1999-05-18 | Lucent Technologies Inc. | Antenna diversity in wireless communication terminals |
US5991643A (en) * | 1997-11-28 | 1999-11-23 | Acer Peripherals, Inc. | Radio transceiver having switchable antennas |
WO2000017960A1 (fr) * | 1998-09-18 | 2000-03-30 | Tantivy Communications, Inc. | Structurede reseau d'antennes empilees sur des cartes imprimees avec composants de mise en forme de faisceaux |
EP1056221A2 (fr) * | 1999-05-25 | 2000-11-29 | Toyota Jidosha Kabushiki Kaisha | Système de réception intégré pour la réception de plusieurs signaux média et procédé correspondant de traitement de signaux média reçus |
US20020000938A1 (en) * | 2000-03-29 | 2002-01-03 | Masakazu Hoashi | Diversity wireless device and wireless terminal unit |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6285324B1 (en) * | 1999-09-15 | 2001-09-04 | Lucent Technologies Inc. | Antenna package for a wireless communications device |
-
2002
- 2002-01-25 FR FR0200944A patent/FR2835367A1/fr active Pending
-
2003
- 2003-01-24 US US10/502,781 patent/US20050239492A1/en not_active Abandoned
- 2003-01-24 EP EP03717352A patent/EP1468470A1/fr not_active Withdrawn
- 2003-01-24 CN CNA038026880A patent/CN1623249A/zh active Pending
- 2003-01-24 WO PCT/FR2003/000240 patent/WO2003063293A1/fr not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5903821A (en) * | 1995-07-13 | 1999-05-11 | Sony Corporation | Portable telephone with microstrip antennas |
US5905467A (en) * | 1997-07-25 | 1999-05-18 | Lucent Technologies Inc. | Antenna diversity in wireless communication terminals |
US5991643A (en) * | 1997-11-28 | 1999-11-23 | Acer Peripherals, Inc. | Radio transceiver having switchable antennas |
WO2000017960A1 (fr) * | 1998-09-18 | 2000-03-30 | Tantivy Communications, Inc. | Structurede reseau d'antennes empilees sur des cartes imprimees avec composants de mise en forme de faisceaux |
EP1056221A2 (fr) * | 1999-05-25 | 2000-11-29 | Toyota Jidosha Kabushiki Kaisha | Système de réception intégré pour la réception de plusieurs signaux média et procédé correspondant de traitement de signaux média reçus |
US20020000938A1 (en) * | 2000-03-29 | 2002-01-03 | Masakazu Hoashi | Diversity wireless device and wireless terminal unit |
Also Published As
Publication number | Publication date |
---|---|
US20050239492A1 (en) | 2005-10-27 |
EP1468470A1 (fr) | 2004-10-20 |
CN1623249A (zh) | 2005-06-01 |
FR2835367A1 (fr) | 2003-08-01 |
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