WO2001037367A1 - Terminal de communication mobile par satellite - Google Patents

Terminal de communication mobile par satellite Download PDF

Info

Publication number
WO2001037367A1
WO2001037367A1 PCT/JP2000/007993 JP0007993W WO0137367A1 WO 2001037367 A1 WO2001037367 A1 WO 2001037367A1 JP 0007993 W JP0007993 W JP 0007993W WO 0137367 A1 WO0137367 A1 WO 0137367A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
communication
satellite
satellite communication
terminal
Prior art date
Application number
PCT/JP2000/007993
Other languages
English (en)
Japanese (ja)
Inventor
Takuji Mochizuki
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to AU13089/01A priority Critical patent/AU1308901A/en
Publication of WO2001037367A1 publication Critical patent/WO2001037367A1/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
    • H01Q1/244—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 extendable from a housing along a given path
    • 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
    • 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
    • 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
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18569—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
    • H04B7/18571—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance for satellites; for fixed or mobile stations

Definitions

  • the present invention relates to a mobile satellite communication terminal, and more particularly to a mobile satellite communication terminal suitable for a satellite communication antenna to prepare a nearby environment that does not affect an antenna radiation pattern.
  • a mobile terminal antenna is used in a dual mode mobile satellite communication terminal (mobile terminal) having a mobile satellite terminal function using a satellite in orbit and a terrestrial mobile terminal function, particularly in a satellite communication mode.
  • the transmitted output power tends to increase compared to the terrestrial communication mode because the distance between the mobile terminal and the satellite is large, and the reception requires higher sensitivity reception than the terrestrial mode. Become.
  • the elevation angle and azimuth from the terminal to the satellite can be very wide, and the gain and radiation pattern of the antenna Similarly, it is necessary to secure characteristics with a wide elevation angle and azimuth angle for stable communication. Therefore, designing the radiation pattern of the satellite communication antenna so as to have a wide range of coverage from the beginning is a disaster, and the radiation pattern from the satellite communication antenna from the mobile terminal to the satellite is generally However, the antenna is easily affected by conductors and non-conductors near the antenna, making it impossible for satellites to receive signals stably due to changes in the radiation pattern for transmission, and changes in antenna gain due to changes in the radiation pattern for reception. There was a problem that the reception electric field strength deteriorated and fluctuated, and it was difficult to obtain stable reception.
  • the human body becomes a conductor, non-conductor, or changes drastically depending on the conditions.However, as a mobile terminal is often used as a portable device, it can be held in a hand. For the radiation pattern of the antenna for satellite communication, it is desirable to keep the antenna as far away from the human body as possible.
  • FIG. 1 is an explanatory diagram showing an example of use of a conventional dual mode mobile terminal.
  • the conventional portable terminal 11 integrated terminal or dividable terminal
  • the conventional portable terminal 11 is provided with a terrestrial communication antenna 12 and a satellite communication antenna 13 used for radiating a transmission wave to the satellite 10 at the upper part of the housing. Since the conventional mobile terminal 11 has a structure in which a microphone, a speaker, and an antenna are provided in a small housing, the user and the satellite communication antenna 13 are in close proximity during communication.
  • JP-A-10-233609 JP-A-10-243453, JP-A-10-256939, JP-A-10-294608, GB 2314483A, JP-A-5-153026 (EP 0521609A2) and the like have been proposed.
  • the technique described in Japanese Patent Application Laid-Open No. H10-233609 is intended to prevent reduction of radiation by a user.
  • a mobile communication portable mechanism is disclosed, comprising a possible antenna module, wherein the antenna module is held by itself independently of the portable device.
  • Japanese Patent Application Laid-Open No. H10-224341 has been proposed.
  • the technology described in this publication is intended to provide an antenna structure with reduced influence from the human body.
  • This publication discloses that the antenna structure is always stored on the back of the mobile phone housing, and is used at the time of use.
  • a handheld mobile phone for satellite communication characterized in that an antenna deploying member having a small antenna attached near its tip is provided so as to extend substantially perpendicularly to the longitudinal direction of the back of the body.
  • Japanese Patent Laid-Open No. 5-183330 is proposed.
  • the technology described in the publication is intended to make the antenna foldable during standby reception or when not in use.
  • This publication discloses that a directional antenna section is provided in the main body of the portable wireless device.
  • the antenna unit is movably mounted between a position and a second position, and the antenna unit is fixed at the first position so as to mainly emit radio waves in a first direction, and the antenna unit is opposite to the first position.
  • a portable wireless device is disclosed which is fixed so as to mainly emit radio waves in a second direction at a second position.
  • Japanese Patent Laid-Open No. Hei 7-115380 has been proposed.
  • the technique described in the publication is intended to enable the antenna to be folded when not in use.
  • the extension attached to the upper portion of the housing via a hinge at the time of use is described as follows.
  • a portable terminal or telephone is disclosed, wherein the portable terminal or the telephone is rotated so as to expand above the upper part, and the plane radiating antenna is turned upward and away from the user.
  • Japanese Patent Application Laid-Open No. Hei 7-288880 has been proposed.
  • the technique described in the publication is intended to improve operability.
  • This publication discloses a first housing provided with a receiver and a display, and a second housing provided with a dial and a transmitter.
  • a portable wireless telephone connected by a first hinge shaft, and rotating about the first hinge shaft. Is disclosed. DISCLOSURE OF THE INVENTION
  • the above-described conventional example has the following problems.
  • the user holds the phone and talks, especially when using satellite mode, because the antenna for satellite communication forms a radiation pattern from a low elevation angle to a wide range, so the influence of nearby conductors (human body) is affected.
  • the condition may significantly affect the characteristics of the antenna for satellite communication.
  • a dual-mode mobile terminal that has a mobile satellite terminal function and a terrestrial mobile terminal function, it is necessary to hold the satellite communication while holding it so that radio waves can reach from a satellite communication antenna to a distant satellite.
  • the human body which is the ground potential of the antenna for communication, is still a conductor, the human body may be in a semi-insulated state, the radiation from the satellite communication antenna will be disturbed, and the radiated electric field will also change easily. It must be as far away from the human body as possible.
  • the above-mentioned Japanese Patent Application Laid-Open No. Hei 10-230336 has a problem that it is characterized in that the high-output portion is simply completely separated and is not considered for use in a portable device.
  • the terminal configuration was not characterized due to the effects of radiation patterns from the human body.
  • An object of the present invention is to increase the distance between a satellite communication antenna and a housing of a mobile terminal in particular, and to prevent a decrease in effective transmission power due to shadowing by a human body as described above according to the distance. It forms a stable radiation pattern of a satellite communication antenna to transmit stable radio waves to orbiting satellites or geostationary satellites, and to prevent deterioration of reception sensitivity, as well as to improve reliability, reduce costs, and improve terminal shape. It provides dual-mode mobile terminals and mobile satellite communication terminals that have been downsized.
  • a communication terminal includes: a first housing that contacts a user's head during use; a second housing; a first antenna attached to the second housing; The first housing and the first antenna so that one antenna can be separated from the head.
  • a second hinge rotatably coupled to the first housing, an end of a shaft being attached to the first housing, and a first hinge enclosing the shaft in the second housing.
  • the first antenna may be a satellite communication antenna.
  • the first casing may include a baseband signal processing circuit.
  • the second housing may be provided with an RFZIF signal processing circuit.
  • the first antenna may be telescopic.
  • the communication terminal according to the present invention may include a second antenna having a common axis with the first hinge.
  • the second antenna may be a ground communication antenna.
  • At least one of a microphone, a speaker, and a keyboard may be attached to the first housing.
  • the first housing and the second housing may be integrated at a predetermined angle of the first hinge.
  • the second housing may include at least a first part and a second part, and the first part and the second part may be connected by a second hinge. Good.
  • the communication terminal according to the present invention may include a second antenna having a common axis with the second hinge.
  • the second antenna may be a ground communication antenna.
  • the second housing further includes a third part and a fourth part, wherein the first part and the third part are connected by the first hinge, The third portion and the fourth portion may be connected by a third hinge, and the second portion and the fourth portion may be connected by a fourth hinge.
  • the first housing and the second housing are detachable. It may be.
  • the second housing may have a shape such that the second housing can be placed on an object at an angle when the first antenna is set up, while being separated from the first housing. .
  • the distance between the satellite communication antenna and the user in normal use is increased as compared with the conventional case, and the antenna radiation pattern in the satellite direction by the satellite communication antenna is stabilized. It can be used as it is, while improving reliability, lowering costs, and reducing the size of the terminal.
  • Japanese Patent Application Laid-Open No. H10-233690 discloses that a completely high output section is simply provided.
  • the present invention is characterized by the fact that it is characterized by the form of separation and is not considered for use in a mobile phone, and that other public announcements do not characterize the terminal configuration due to the radiation pattern suffering from the human body. It is different from the feature of
  • antennas for terrestrial terminals are omni-directional with linear polarization transmission / reception and are mainly radiation patterns with horizontal beams, but antennas for satellite terminals are assumed to be low-orbit satellites. Therefore, it is omnidirectional with circularly polarized transmission and reception, and its radiation pattern is a beam with a wide elevation angle over almost the entire circumference of the upper hemisphere with respect to the vertical plane with the antenna. Therefore, separating the satellite terminal antenna from the terrestrial terminal antenna can reduce the influence of the outside world and increase the electric field strength reaching the satellite due to the omnidirectionality of the circularly polarized wave transmission / reception of the satellite terminal antenna. The above is also valid.
  • the same terminal can perform dual mode communication in a satellite system and a terrestrial system, and when the terminal is used as a satellite terminal, that is, when the satellite is used as a satellite terminal, in particular, by folding and elasticity of a satellite communication antenna, that is, when the satellite is used,
  • the terminal configuration naturally increases the distance between the satellite communication antenna installed at the terminal and the common part, and the satellite communication antenna and the human body that easily disturbs its radiation pattern are connected to the common part. The distance can be secured.
  • the satellite communication call can be set up stably with a stable radiation pattern and the reception pattern of the satellite communication antenna in the reception state. The stability of the call of the satellite portable terminal used in the seized usage mode can be greatly guaranteed.
  • FIG. 1 is an explanatory diagram showing the positional relationship of a conventional portable terminal.
  • FIG. 2 is a perspective view showing an example of use of the dual mode mobile satellite communication terminal according to the first embodiment of the present invention.
  • FIG. 3 is an explanatory diagram showing a positional relationship between a dual-mode mobile satellite communication terminal and a common unit according to the first embodiment of the present invention.
  • FIG. 4 is a block diagram showing a configuration of a dual mode mobile satellite communication terminal according to the first embodiment of the present invention.
  • FIG. 5 is a perspective view showing a use example of the dual mode mobile satellite communication terminal according to the first embodiment of the present invention.
  • FIG. 6 is a perspective view showing a use example of the dual mode mobile satellite communication terminal according to the second embodiment of the present invention.
  • FIG. 7 is an explanatory diagram showing a positional relationship between a dual-mode mobile satellite communication terminal and a common unit according to the second embodiment of the present invention.
  • FIG. 8 is a block diagram showing a configuration of a dual mode mobile satellite communication terminal according to Embodiment 2 of the present invention.
  • FIG. 9 shows the use of the dual mode mobile satellite communication terminal according to the second embodiment of the present invention. It is a perspective view showing an example of use. BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings.
  • the dual mode mobile satellite communication terminal includes a common unit 101 forming a lower housing and a terrestrial communication-satellite communication forming an upper housing.
  • RF / IF section 102 the common section 101 is equipped with a display 103, a microphone 104, a speaker 105, and a keyboard 106, and a terrestrial communication / satellite communication RF (radio frequency) ZIF.
  • the unit 102 is equipped with a ground communication antenna 107 and a satellite communication antenna 108. 9 indicates a base station, and 10 indicates a satellite.
  • the common unit 101 constitutes a lower housing of the mobile satellite communication terminal, and includes a display 103, a microphone 104, a speaker 105, a keyboard 1 06, etc., and has a circuit configuration shown in FIG. 4 described later.
  • the display 103 displays a date, a time, a telephone number, a message, a received electric field strength, a still image with a future effect, a moving image, and the like.
  • the microphone 104 inputs a user's voice when communicating (transmitting) with the other party via the terrestrial communication antenna 107 or the satellite communication antenna 108.
  • the speaker 105 outputs the voice of the other party when communicating (receiving) with the other party via the terrestrial communication antenna 107 or the satellite communication antenna 108.
  • the keyboard 106 is used for inputting the telephone number of the other party and various settings.
  • the RFZIF section 102 for terrestrial communication and satellite communication constitutes the upper housing of the mobile satellite communication terminal, and includes a terrestrial communication antenna 107, a satellite communication antenna 108, etc.
  • the ground communication antenna 107 transmits and receives radio waves via the base station 9 when used as a ground terminal.
  • the ground communication antenna 107 and the coaxial hinge 111 are used as a main axis
  • the satellite communication antenna 108 is used as a sub-axis.
  • the satellite communication antenna 108 transmits and receives radio waves via the satellite 10 when used as a satellite terminal, and is configured as a vertically movable type that can be vertically extended and contracted by manual operation.
  • the RFZIF unit 102 for terrestrial communication and satellite communication is extended to the side of the common unit 101 via the hinges 111 so that it is mounted coaxially with the sub shaft.
  • the satellite communication antenna 108 is used in a state where it is farthest from the hinge 111 serving as the main shaft.
  • the dual-mode mobile satellite communication terminal has a lower part as shown in FIG. 2 in order to optimize the radiation energy to the satellite 10 and to stably reach the received wave.
  • an RFZIF unit 102 for terrestrial communication and satellite communication including a terrestrial communication antenna 107 and a satellite communication antenna 108 located at the top.
  • the RFZIF unit 102 for the terrestrial communication and satellite communication in the upper part is the common part in the lower part.
  • the RFZIF unit 102 for terrestrial communication and satellite communication and the common unit 101 are used in a thin form so as to fit on the top of the unit.
  • the terrestrial communication antenna 107 may be extendable and contractable along the side of the common part 101.
  • FIG. 2 (c) shows a state in which the common unit 101 and the satellite communication antenna 108 are further separated from the state of the upper housing shown in FIG. 2 (b). That is, the terrestrial communication / satellite communication RFZIF unit 102 is arranged so that the hinge 111 arranged coaxially with the terrestrial communication antenna 107 and the satellite communication antenna 108 are in the most distant state. Is extended by rotating it approximately 90 degrees via the hinge 111, which is the state in which the most stable communication with the satellite is possible for the satellite communication antenna 108. In this case, it is the most distant from the hand holding the common part 101, and it can be said that the state is excellent in stable communication. In this case, as shown in FIG. 2 (d), by expanding and contracting the satellite communication antenna 108 in the axial direction, it is possible to obtain more stable and optimum antenna radiation characteristics.
  • this dual-mode mobile satellite communication terminal as shown in Fig. 3, the user holds the common part 101 of the housing by hand, puts it on his ear and puts it through the satellite 10 Since a call is made with the other party connected to the base station 9, the satellite communication antenna 108 and the common unit 101 having a voice input / output unit are used in a state where they are separated via the hinge 111. . Therefore, compared to the conventional example shown in FIG. 1, the satellite communication antenna 108 apart from the common unit 101 has a radiation pattern of the antenna that is higher than that of the satellite 10 in the sky.
  • the rate of disturbance is small and it is separated from the human hand holding the common part 101, it moves away from a human body that easily becomes a conductor or non-conductor, and the radiated radio wave reaches the satellite 10 with a stable radiation pattern, The radio wave from the satellite 10 can stably reach the satellite communication antenna 108 and be received.
  • the dual-mode mobile satellite communication terminal when used as a satellite terminal, that is, when it is transmitted to satellite 10, the radiation pattern is naturally changed to the satellite communication antenna 108 of the mobile satellite communication terminal. In other words, it can be said that the human body which is easily affected can be separated.
  • the dual mode mobile satellite communication terminal includes a terrestrial communication antenna 107, a satellite communication antenna 108, a terrestrial communication RFZIF circuit 131, Common baseband unit 13 2, IF (interface) circuit 13 3, RFZIF circuit 13 4 for satellite communication, I / F (internal interface) circuit 13 5, signal processing control unit ZC odec (Coder-decoder ) Part 1 3 6, display 103, a microphone 104, a speaker 105, and a keyboard 106.
  • reference numeral 137 surrounded by a dashed line indicates the whole including the members of the RFZ IF section 102 for terrestrial communication and the RF / IF circuit for terrestrial communication shown in FIG.
  • Reference numeral 139 surrounded by indicates the whole including the members and the circuit configuration of the common part 101 shown in FIG.
  • the ground communication RFZ IF circuit 131 performs transmission / reception radio communication via a base station and frequency conversion between a radio band and an IF band when used as a terrestrial terminal. It has an amplifier, filter, mixer, etc.
  • the common baseband section 132 performs error correction coding Z-frame formation / modulation of a transmission signal, demodulation / error correction decoding of a received signal Z-frame decomposition, etc., and includes an AZD converter, a D / A converter, It is equipped with a DSP (Digital Signal Processor), etc.
  • the I / F circuit 133 is composed of a radio transceiver (RFZIF circuit 131 for ground communication, common baseband unit 132, RF / IF circuit 134 for satellite communication) in the upper case and a lower common unit (signal processing control unit). It is responsible for the interface with the Codec department136).
  • the RFZIF circuit for satellite communication 134 performs transmission / reception wireless communication via satellite and frequency conversion between the radio band and the IF band when used as a satellite terminal, and includes an amplifier, filter, mixer, etc. Have.
  • the I ZF circuit 135 is, like the upper I ZF circuit 133, the lower common part (signal processing controller ZCodec part 136) and the upper transceiver wireless transceiver (ground communication RFZ IF circuit 131, common It controls the interface between the baseband unit 132 and the RFZ IF circuit 134) for satellite communication.
  • the signal processing control unit (Co dec unit) 136 performs processing Z control for signal transmission / reception to / from the wireless transceiver in the upper housing via the I / F circuit 135, display processing Z control for the display 103, and a microphone 104 It performs Z-control of baseband processing of audio input from the PC, baseband processing / control of audio output to the speaker 105, and Z-control of key input signal input from the keyboard 106.
  • it has a CPU (Central Processing Unit), a memory, a display control unit, an audio input / output control unit, a keyboard control unit, and the like. That is, in the embodiment of the present invention, the upper block in FIG.
  • the lower block in Fig. 4 shows the internal circuit configuration of the common part, including an I / F circuit 135 that interfaces with the upper block, a signal processing controller / Codec 136, a display 103, a microphone 104, and a speaker. It has a power of 105 and a keyboard. As shown in the figure, a low-rate data is transmitted and received between the upper block and the lower common part.
  • the upper surface of the upper block section 102 is distinguished by a broken line because the RFZIF section of the radio section for satellite communication is half equipped as a functional section, and the other half is the radio section for terrestrial communication.
  • This is a conceptual diagram when the common baseband section and the IF section are stored. These sections may be installed in such a manner, or the gap may be reduced as much as possible to reduce the size, and may be arranged so as to enter each other. .
  • the present dual-mode mobile satellite communication terminal has a common unit 101 located at a lower part, and an upper block part including a terrestrial communication antenna 107 and a satellite communication antenna 108 located at an upper part (
  • the terrestrial communication / satellite communication RF interface section 102, etc.) is used, and when used as a terrestrial terminal, or when in both modes, and when carrying, as shown in Fig. 2 (a), the upper block is It is used in an integrated state so that it fits on the common part.
  • one hinge and one RFZIF part (such as a terrestrial communication satellite) are moved by the arrow force in the figure as shown in Fig. 2 (b).
  • the upper block is rotated via the hinges 111 with the member constituting the communication RFZIF section 102, and the upper block is extended to the side of the common section 101 for use.
  • the trust antenna 108 is pulled out and used as shown in FIG. 2 (d).
  • FIG. 3 the positional relationship between the common unit 101 and the satellite communication antenna 108 used for radiating the transmitted wave to the satellite 10 in the first embodiment of the present invention is shown in the above-described conventional example. It is possible to secure a sufficiently large interval as shown in FIG. However, a radiation pattern sufficient for mobile satellite communication can be formed around the satellite communication antenna 108, and stable transmission and reception communication can be performed.
  • the first embodiment of the present invention it is possible to perform satellite-mode and terrestrial-system dual-mode communication with the same terminal, and to change the terminal configuration to the radiation when the satellite communication antenna 108 is used in actual communication.
  • a configuration is adopted that minimizes the effect on the pattern, and a terminal form that naturally increases the distance between the satellite communication antenna 108 installed at the terminal and the common unit 101 is provided. This has the effect of realizing a simple dual mode mobile satellite communication terminal.
  • the mobile satellite receiver normally has the ability to operate the terrestrial communication terminal function and set it to the reception state during normal standby mode, and it is not limited to this, and it is possible to switch both functions at predetermined time intervals. Good.
  • the horizontal distance between the satellite communication antenna and the common part is generally short, Since the radiation pattern spreading around the antenna is disturbed and the stability of communication transmission / reception needs to be increased, it is necessary to extend the antenna upward from a common part as compared with the present invention, which complicates the antenna mechanism.
  • the antenna radiation pattern at the time of transmission / reception spread over a low elevation angle is changed by the human body and common parts, and By improving the quality of satellite communications, improving the reliability of communication connections, lowering the cost of terminals, and reducing the size of terminals by separating them from nature There is an effect that kill.
  • a lower common unit 101 having microphone-speech power or connected to a data terminal, a terrestrial communication antenna 107 and a satellite communication antenna 108 are provided.
  • the upper block section 102 is separated from the upper block section 102 by a low-rate infrared communication (IrDA) or wired or wireless communication. It is conceivable to provide each IZF (interface) circuit of 102.
  • each IZF (internal face) circuit has an upper block section 102 provided with an RF / F section for ground communication and satellite communication as described in FIG. 2 according to the first embodiment. It has a function of exchanging transmission / reception signals with the lower common unit 101 using baseband signals.
  • the terrestrial communication or satellite communication received wave received by the upper block 102 is demodulated, and the infrared, carrier, or radio frequency is modulated by the baseband signal demodulated by the IZF, and the lower common unit is demodulated.
  • the lower common unit 101 demodulates the infrared, carrier, or radio frequency, converts it into a baseband signal, performs signal processing, and outputs the signal from a speaker or as data.
  • the lower common part 101 receives a voice signal or data from a microphone or a personal computer, etc., and uses these as a baseband signal.
  • Infrared, carrier, or radio frequency are modulated and transmitted to the upper block 102, and once demodulated to a baseband signal in the upper block 102, and transmitted to the terrestrial or satellite communication transmitter for high frequency.
  • the signal is converted to a signal and transmitted to the terrestrial communication base station or the satellite communication base station via the satellite.
  • the radiation pattern characteristics of the satellite communication antenna 108 be affected by the human body, but also the upper block unit 102 including the satellite communication antenna 108 and the satellite communication RF / IF unit. Separation and installation within the visible range of the satellite 10 near the window, etc., and installation of the lower common part 101 at a distance indoors, easily through the lower common part 101 placed indoors. In addition, it is possible to connect a telephone, fax, PC (Personal Computer), etc. to the satellite line, and it is possible to realize a usage form that can easily use satellite communication.
  • the lower common portion 101 and the upper block portion 102 are combined to form a portable, dual-mode mobile satellite communication terminal that is portable and portable as in the first embodiment. As a matter of course, it can be transported, Various mobile satellite communication terminals can be effectively used.
  • FIG. 6 is a perspective view showing an example of use of the dual mode mobile satellite communication terminal according to the embodiment of the present invention.
  • a dual mode mobile satellite communication terminal according to an embodiment of the present invention includes a common unit 201, a terrestrial communication RF (Radio Frequency) / IF (Inter mediate Frequency) unit 202, and a satellite communication R FZ IF It is roughly composed of a part 203 and Further, the common unit 201 is equipped with a display 204, a microphone 205, a speaker 206, and a keyboard 207, and the terrestrial communication RFZIF unit 202 is equipped with a terrestrial cellular antenna 208 (hereinafter abbreviated as a terrestrial communication antenna).
  • the RFZIF section 203 for satellite communication is equipped with a satellite communication antenna 209. In the figure, 10 indicates a satellite and 9 indicates a base station.
  • the RFZI F section 202 for terrestrial communication and the RFZI F section 203 for satellite communication are each composed of two members and constitute the upper part of the housing of the mobile satellite communication terminal. It is provided with an antenna 209 and the like, and is configured to be foldable and expandable via four hinges 211 to 214, and has a circuit configuration shown in FIG. 8 described later.
  • the hinge 211 among the hinges 211 to 214 is supported on the upper part of the common part 201 as a main shaft.
  • the hinges 212, 214 are primary sub-axes, and one of the sub-axes, hinge 214, is also used as a ground communication antenna.
  • Hinge 213 is a secondary used as a satellite communication antenna It is configured as a countershaft.
  • the hinges 2 1 1 to 2 14 constitute a folding Z-rotatable mechanism.
  • the terrestrial communication antenna 208 of the terrestrial communication RFZIF unit 202 transmits and receives radio waves such as 800 MHz and 1900 MHz to and from the base station 9 when used as a terrestrial terminal.
  • the satellite communication antenna 209 of the RFZIF unit 203 for satellite communication transmits and receives radio waves such as 1.8 GHz and 2.2 GHz to and from the satellite 10 when used as a satellite terminal. It moves up and down by operation.
  • the dual-mode mobile satellite communication terminal has a lower part as shown in FIG. 6 in order to optimize the radiation energy to the satellite and to stably reach the received wave. It comprises a common part 201 located there, an RFZIF part 202 for terrestrial communication including an antenna 208 for terrestrial communication and an antenna 209 for satellite communication located above, and an RFZIF part 203 for satellite communication.
  • the RF ZIF unit 202 for terrestrial communication and the satellite communication are applied by applying the force indicated by the arrow in Fig. 6 (b).
  • the hinges 2 12 and 2 14 are expanded and the hinges 2 1 1 and 2 13 are folded so that the RFZ IF unit 203 is integrated.
  • the hinges 2 11 and 2 13 are farthest apart, and the hinges 2 12 and 2 14 are closest together.
  • the state shown in FIG. 6 (d) is obtained.
  • This state With the star communication antenna 209, the most stable communication with the satellite is possible.
  • the satellite communication antenna 209 is farthest from the human hand holding the common unit 201, and is excellent in stable communication. Further, as shown in FIG. 6 (d), the satellite communication antenna is extended and contracted in the direction of the secondary axis, so that more stable and optimum antenna radiation characteristics can be obtained.
  • this dual-mode mobile satellite communication terminal as shown in Fig. 7, the user holds the common part of the housing with his / her hand and puts it on the ear to reach the ground switching station via the satellite. Since a call is made with the connected party, the satellite communication antenna 209 and the common unit 201 having a voice input / output unit are the farthest apart. At this time, compared to the conventional example shown in FIG. 1, the satellite communication antenna 209 further away from the common part 201 has a radiation pattern of the antenna common to the satellite 10 in the sky.
  • the dual-mode mobile satellite communication terminal When used as a satellite terminal, it naturally separates the satellite communication antenna 209 of the mobile satellite terminal from the human body that is likely to affect the radiation pattern. It is possible to make it.
  • FIG. 8 is a block diagram showing a circuit configuration of the dual mode mobile satellite communication terminal according to the embodiment of the present invention.
  • the dual mode mobile satellite communication terminal according to the embodiment of the present invention includes a terrestrial communication antenna 208, a satellite communication antenna 209, a terrestrial communication RFZIF circuit 231, a common baseband unit 232, IZF (In-Face) circuit 2 3 3, RFZIF circuit for satellite communication 2 3 4, I / ⁇ (In-Face) circuit 2 3 5, Signal processing control unit / Codec (Coder-decoder) ⁇ 36,
  • a display 204, a microphone 205, a speaker 206, and a keyboard 207 are provided.
  • the I / F circuit 235 like the upper IF circuit 233, has a lower common part (signal processing control part ZCodec part 236) and a wireless transceiver in the upper housing (ground communication RF / IF circuit 231, common baseband).
  • the module 232 controls the interface with the RFZ IF circuit for satellite communication 234).
  • the signal processing control unit ZCodec unit 236 performs processing Z control for signal transmission / reception to / from the wireless transceiver in the upper housing via the IZF circuit 235, display processing Z control for the display 204, and processing of audio input from the microphone 205.
  • the upper block of FIG. 8 includes an RFZIF circuit 231 for terrestrial communication, an RFZ IF circuit 234 for satellite communication, and a common baseband section 232 and an IZF circuit 233. These are stored in the upper R FZ IF unit in the form of four divisions.
  • a ground communication antenna 208 and a vertically movable satellite communication antenna 209 are connected to the ground communication RFZ IF circuit 231 and the satellite communication RF / IF circuit 234, respectively.
  • the dual-mode mobile satellite communication terminal has a common block 201 located at the lower part, and an upper block part (terrestrial communication antenna 208 and satellite communication antenna 209 located at the upper part).
  • RFZ IF section 202 for terrestrial communication RFZIF section 203 for satellite communication, etc.
  • the upper block section is common to the lower section as shown in Fig. 6 (a). It is folded and used to fit over the part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Transceivers (AREA)
  • Telephone Set Structure (AREA)

Abstract

L'invention concerne un terminal de communication mobile par satellite qui possède une fonction de terminal terrestre, destinée à la communication à travers une station de base terrestre (9), et une fonction de terminal par satellite destinée à la communication à travers un satellite (10). Le terminal de communication mobile par satellite comprend une partie commune (101) pourvue d'un microphone (104) et d'un haut-parleur (105), une partie de communication RF/IF par satellite (102) munie d'une antenne de communication au sol (107) et d'une antenne de communication par satellite (108), ainsi qu'un pivot (111) pour raccorder de manière rotative la partie commune (101) et la partie de communication RF/IF par satellite (102). En modifiant l'angle de pivotement, on intègre la partie commune (101) à la partie de communication RF/IF par satellite (102) en mode transport et en mode communication terrestre. En outre, en modifiant l'angle de pivotement, en mode de communication satellite, la partie commune (101) et la partie de communication RF/IF par satellite (102) se mettent l'une par rapport à l'autre dans une position dans laquelle elles peuvent pivoter avec un angle prédéterminé; la distance entre la tête de l'utilisateur et l'antenne de communication par satellite (108) devient plus grande, ce qui permet de produire un diagramme de rayonnement stabilisé.
PCT/JP2000/007993 1999-11-15 2000-11-13 Terminal de communication mobile par satellite WO2001037367A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU13089/01A AU1308901A (en) 1999-11-15 2000-11-13 Mobile satellite communication terminal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP11-323921 1999-11-15
JP32392199 1999-11-15
JP32719999 1999-11-17
JP11-327199 1999-11-17

Publications (1)

Publication Number Publication Date
WO2001037367A1 true WO2001037367A1 (fr) 2001-05-25

Family

ID=26571343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/007993 WO2001037367A1 (fr) 1999-11-15 2000-11-13 Terminal de communication mobile par satellite

Country Status (2)

Country Link
AU (1) AU1308901A (fr)
WO (1) WO2001037367A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117978260A (zh) * 2024-03-29 2024-05-03 浙江中星光电子科技有限公司 一种卫星通信终端及安装方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746015A (ja) * 1993-07-30 1995-02-14 Mitsubishi Electric Corp 携帯無線機のアンテナ装置
JPH07115380A (ja) * 1993-09-14 1995-05-02 Space Syst Loral Inc 展開自在なアンテナを有する移動通信端末
JPH0969709A (ja) * 1995-09-01 1997-03-11 Makurotetsuku:Kk 携帯電話機用補助アンテナ及び該携帯電話機
WO1997026714A1 (fr) * 1996-01-16 1997-07-24 Ericsson Inc. Systeme d'antenne pour telephones portables bimodes cellulaires/par satellites
JPH10243453A (ja) * 1997-02-28 1998-09-11 Kyocera Corp デュアルモード式移動無線端末
JPH11251953A (ja) * 1998-03-03 1999-09-17 Nec Corp 移動通信端末装置及びその待ち受け受信方法
JP2000209015A (ja) * 1999-01-14 2000-07-28 Mitsubishi Electric Corp 携帯無線機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746015A (ja) * 1993-07-30 1995-02-14 Mitsubishi Electric Corp 携帯無線機のアンテナ装置
JPH07115380A (ja) * 1993-09-14 1995-05-02 Space Syst Loral Inc 展開自在なアンテナを有する移動通信端末
JPH0969709A (ja) * 1995-09-01 1997-03-11 Makurotetsuku:Kk 携帯電話機用補助アンテナ及び該携帯電話機
WO1997026714A1 (fr) * 1996-01-16 1997-07-24 Ericsson Inc. Systeme d'antenne pour telephones portables bimodes cellulaires/par satellites
JPH10243453A (ja) * 1997-02-28 1998-09-11 Kyocera Corp デュアルモード式移動無線端末
JPH11251953A (ja) * 1998-03-03 1999-09-17 Nec Corp 移動通信端末装置及びその待ち受け受信方法
JP2000209015A (ja) * 1999-01-14 2000-07-28 Mitsubishi Electric Corp 携帯無線機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117978260A (zh) * 2024-03-29 2024-05-03 浙江中星光电子科技有限公司 一种卫星通信终端及安装方法

Also Published As

Publication number Publication date
AU1308901A (en) 2001-05-30

Similar Documents

Publication Publication Date Title
US6005525A (en) Antenna arrangement for small-sized radio communication devices
US20040203537A1 (en) Wireless transmission module
US8630581B2 (en) Repeaters for wireless communication systems
US6677903B2 (en) Mobile communication device having multiple frequency band antenna
US20030189514A1 (en) Array antenna apparatus
US6505054B1 (en) Integrated antenna assemblies including multiple antennas for wireless communications devices
KR20050027961A (ko) 알에프 커플링을 이용한 개인형 중계기
WO2006062101A1 (fr) Appareil d’antenne adaptatif
US8155607B2 (en) Antenna apparatus of portable terminal
JP3891831B2 (ja) 携帯無線機
JP4215749B2 (ja) 衛星受信アンテナを備えた携帯端末機
JP2000197126A (ja) 衛星通信機能付加装置、およびデュアルモ―ド携帯無線機
JP3517879B2 (ja) 移動体衛星通信端末
JP2000232312A (ja) 衛星用アンテナシステム及び携帯電話機
WO2001037367A1 (fr) Terminal de communication mobile par satellite
JP5386981B2 (ja) 携帯型電子装置
JP2005217836A (ja) 携帯型無線機
JPH0969798A (ja) 携帯無線機及びこれを用いた無線通信システム
JPH11251981A (ja) 移動通信機
JP2003179515A (ja) 携帯無線機
JP2003152633A (ja) 無線通信システム及び携帯無線機
US7551143B2 (en) Antenna feed line for portable terminal
JP2006270534A (ja) 無線通信装置
KR100806108B1 (ko) 안테나 장치를 구비한 이동통신 단말기
JPH0969709A (ja) 携帯電話機用補助アンテナ及び該携帯電話機

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA CN KR NO US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application