WO2006011322A1 - 携帯電話装置 - Google Patents
携帯電話装置 Download PDFInfo
- Publication number
- WO2006011322A1 WO2006011322A1 PCT/JP2005/011421 JP2005011421W WO2006011322A1 WO 2006011322 A1 WO2006011322 A1 WO 2006011322A1 JP 2005011421 W JP2005011421 W JP 2005011421W WO 2006011322 A1 WO2006011322 A1 WO 2006011322A1
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- WO
- WIPO (PCT)
- Prior art keywords
- field mode
- mobile phone
- phone device
- antenna
- antenna element
- Prior art date
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Classifications
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
-
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- 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
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
- H04N2007/145—Handheld terminals
Definitions
- the present invention relates to a cellular phone device including a loop antenna element as a broadcast receiving antenna having a broadcast receiving function.
- a monopole antenna and a battery are used to form a dipole antenna, which is arranged perpendicular to the receiver (for example, Patent Documents). 1).
- this type of mobile phone device a diversity operation is performed by switching between an earphone cable antenna, which is an antenna that operates in an electric field mode, and a loop antenna, which is an antenna that operates in a magnetic field mode, according to the reception level.
- this mobile phone device has a folding structure in which an upper housing 1 and a lower housing 2 are supported by a hinge portion 3 so as to be rotatable! / RU
- loop element 4 operates as a built-in antenna for television broadcast reception, and impedance matching is taken by matching circuit 5.
- a received signal from the matching circuit 5 is input to a broadcast receiving circuit 6 which is a first receiving circuit that receives a television broadcast wave.
- the earphone 7 is connected to the earphone connector 9 by an earphone cable 8.
- the earphone cable 8 also operates as an external antenna that transmits audio signals and receives television broadcast waves.
- the television broadcast signal received by the earphone cable 8 is input via the earphone connector 9 to a broadcast receiving circuit 10 that is a second receiving circuit that receives a television broadcast wave.
- the demodulated signal selection circuit 13 is demodulated in the broadcast receiving circuit 6 and the broadcast receiving circuit 10.
- the digital signal is always operated so as to select the one having the higher signal quality.
- the demodulated signal output from the demodulated signal selection circuit 13 is processed by the video processing unit 14, and an image is displayed on the display unit 15 which is a liquid crystal display device arranged on the surface of the upper housing 1, that is, the X side surface. .
- Patent Document 1 Japanese Patent Laid-Open No. 2001-251131
- Patent Document 2 Japanese Patent Laid-Open No. 10-84209
- the receiving antenna of the mobile phone device shown in Patent Document 1 has sensitivity to horizontal polarization, which is mainstream in television broadcast radio waves, because the main polarization is vertical polarization. There was a problem that could not be raised.
- An object of the present invention is to provide a mobile phone device that can obtain high reception sensitivity in any use state.
- the mobile phone device of the present invention includes broadcast receiving means for receiving broadcasts, a first electric field mode antenna element that is detachable from the device main body, and a second electric field provided in the mobile phone device.
- a mode antenna element, a magnetic field mode antenna element, and antenna switching means for selectively switching each antenna element are employed.
- the antenna switching unit selectively selects each antenna element. Since it can be switched, high reception sensitivity can be obtained for various usage conditions.
- the present invention for example, watch a television broadcast! / Get ready!
- the diversity effect between the electric field mode antenna and the magnetic field mode antenna can be obtained regardless of whether the earphone is used or not, so that high reception sensitivity is always obtained.
- FIG. 1 is a schematic perspective view showing a basic configuration of a conventional mobile phone device.
- FIG. 2 is a schematic perspective view showing the basic configuration of the mobile phone device according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic diagram for explaining the operation of the mobile phone device according to Embodiment 1 of the invention.
- FIG. 4 is a usage pattern diagram showing a state where the user holds the mobile phone device according to Embodiment 1 of the present invention by hand and watches / listens to the television broadcast!
- FIG. 5 is a graph showing the average gain of each antenna in the mobile phone device according to Embodiment 1 of the present invention.
- FIG. 6 is a schematic perspective view showing another basic configuration of the mobile phone device according to Embodiment 1 of the present invention.
- FIG. 7 is a schematic perspective view showing the basic configuration of the mobile phone device according to Embodiment 2 of the present invention.
- FIG. 8 is a graph showing the average gain of each antenna in the mobile phone device according to Embodiment 2 of the invention.
- FIG. 2 is a schematic perspective view showing the basic configuration of the mobile phone device according to Embodiment 1 of the present invention.
- the mobile phone device 100 includes an upper case 101 and a lower case.
- the unit housing 102 is composed of a foldable mobile phone device that is pivotally supported by a hinge portion 103 so as to be opened and closed.
- the mobile phone device according to the present invention may be a straight-type mobile phone device having a single casing force! /.
- an upper housing 101 and a lower housing 102 are formed of a molded product of a resin material that is an insulator.
- a loop element 104 as a loop antenna element is disposed along the width direction (Y-axis direction) of the mobile phone device 100.
- This loop element 104 operates as a built-in antenna for television reception.
- the loop element 104 is impedance matched by the matching circuit 105 in the range of about 470 MHz to 700 MHz which is a television broadcast frequency.
- a received signal from the matching circuit 105 is input to the broadcast receiving circuit 106.
- the broadcast receiving circuit 106 is a first receiving circuit that receives television broadcast waves.
- the earphone 107 is for a user 300 (see FIG. 4) to insert it into his / her ear and listen to the sound of television broadcasting, and is connected to the earphone connector 109 via an earphone cable 108.
- Earphone cable 108 also operates as an external antenna that transmits audio signals and receives television broadcast waves.
- the television broadcast signal received by the earphone cable 108 is input to the broadcast receiving circuit 110 via the earphone connector 109.
- the broadcast receiving circuit 110 is a second receiving circuit that receives television broadcast waves.
- the length of the earphone cable 108 is set to about 50 cm to 100 cm, for example.
- the length of the earphone cable 108 is about 0.8 wavelength power and about 2.3 wavelengths in the television broadcast reception band. It should be noted that the earphone cable 108 has a configuration that provides a practically sufficient antenna performance even when its length is 0.8 wavelength or less.
- a helical element 111 that operates as a built-in antenna for receiving television broadcasts is disposed.
- This helical element 111 has a conductive element at the upper end of the upper casing 101, and several times around the outer surface of the upper casing 101 (housing case) while maintaining a predetermined element spacing (for example, about 1 mm). It is formed to wrap around.
- the helical element 111 configured as described above is used as a normal mode helical antenna. It operates and its helical axis is arranged in the longitudinal direction of the mobile phone, that is, the z-axis direction.
- the total length of the conductor element constituting the helical element 111 is set to about 0.25 wavelength (1Z4 wavelength) to 0.625 wavelength (5Z8 wavelength) in the television broadcast reception band.
- the helical element 111 is impedance-matched by the matching circuit 112 in the range of about 470 MHz to 700 MHz, which is a television broadcast frequency.
- the television broadcast signal received by the helical element 111 is input to the transmission / reception circuit 110 via the earphone connector 109.
- the earphone connector 109 has a function of switching between a television broadcast signal received by the earphone cable 108 and a television broadcast signal received by the helical element 111 and inputting it to the broadcast receiving circuit 110.
- the demodulated signal selection circuit 113 operates so as to always select the digital signal demodulated by the broadcast receiving circuit 106 and the broadcast receiving circuit 110, which has a higher signal quality.
- the quality of the demodulated digital signal eg, bit error rate, packet error rate, field strength, CZN ratio (carrier to noise level ratio) is detected in order to detect the quality of both signals.
- baseband signal quality parameters such as SZN ratio (signal to noise level ratio) are used.
- a demodulated signal at a time interval as short as possible, such as a minimum slot unit (several milliseconds, time interval of mSec or less) of the digital broadcast signal format.
- Diversity effect can be increased.
- the antenna performance improvement effect including the influence of the human body obtained by the difference between the electric field mode and the magnetic field mode can be obtained.
- the demodulated signal output from the demodulated signal selection circuit 113 is processed by the video processing unit 114 and the video is displayed on the display unit 115.
- the display unit 115 also serves as a liquid crystal display device, and is disposed on the surface of the upper casing 101, that is, the surface on the ⁇ X side.
- FIG. 3 is a configuration diagram of the main part for explaining the operation of the mobile phone device according to Embodiment 1 of the present invention.
- the outer ground conductor 116 is formed of, for example, a net-like conductor that covers the audio signal line 117 in the earphone cable 108 so as to shield it.
- the outer ground conductor 116 and the audio signal line 117 are connected to the earphone 107 in the earphone cable 108.
- the earphone cable 108 is connected to a circuit inside the mobile phone device 100 by inserting the insertion connector 118 into the earphone connector 109.
- the outer ground conductor 116 is connected to the ground inside the mobile phone device 100 by the coil 119 via the antenna connection terminal 121, that is, to the ground potential.
- the audio signal line 117 is shielded and shielded by the outer ground conductor 116 in the low frequency band which is the audio signal band.
- the earphone 107 When the earphone 107 is used, by inserting the insertion connector 118 into the earphone connector 109, the ground outer conductor 116 is input to the broadcast receiving circuit 110 via the antenna connection terminal 121, and the earphone cable 108 is connected. Selected as an antenna.
- the value of the coil 119 is set so that the impedance is sufficiently high in the television broadcast frequency band.
- a helical element 120 in FIG. 3 schematically shows the helical element 111 shown in FIG.
- the television broadcast signal received by the helical element 120 reaches the connection panel terminal 122 of the earphone connector 109 via the matching circuit 112.
- connection panel terminal 122 has a panel property, and is configured to be in an open state when the insertion connector 118 is inserted into the earphone connector 109. On the other hand, when the insertion connector 118 force is removed from the S earphone connector 109, the connection panel terminal 122 is short-circuited with the antenna connection terminal 121, and the helical element 120 is selected as the antenna.
- FIG. 4 is a usage pattern diagram showing a state in which the user holds the mobile phone device according to Embodiment 1 of the present invention by hand and views a television broadcast.
- the outer ground conductor 116 in the earphone cable 108 operates as an antenna having a substantially vertical polarization characteristic.
- the loop element 104 and the earphone cable 108 have two different polarization characteristics of horizontal polarization and vertical polarization. Acts as one antenna. Therefore, in the cellular phone device 100, the demodulated signal obtained by the two antennas is selected by the demodulated signal selection circuit 113, whereby the effect of polarization diversity can be obtained.
- the user 300 watches the television broadcast using the speaker of the mobile phone device 100 without using the earphone 107, the user 300 is placed in the upper housing 101 instead of the earphone cable 108.
- the helical element 111 to be arranged is selected. Therefore, in this case, the polarization diversity effect between the helical element 111 and the loop element 104 is obtained.
- FIG. 5 shows the average gain of each antenna in the mobile phone device according to Embodiment 1 of the present invention, that is, loop element 104 and earphone cable 108 in the state of watching the television broadcast shown in FIG. It is a graph which shows the change of horizontal plane (XY plane) average gain.
- FIG. 5 shows the distance d (see FIG. 4) between the face of the user 300 and the display unit 115 of the mobile phone device 100 on the horizontal axis, and the horizontal axis when the distance d is changed on the vertical axis.
- the average gain is plotted.
- symbol a represents the average gain of the loop element 104
- symbol b represents the average gain of the earphone cable antenna.
- the average gain of the earphone cable antenna is higher than the average gain of the loop element 104.
- the average gain of the earphone cable antenna is lower than the average gain of the loop element 104.
- the loop element 104 operating as a magnetic field mode antenna operates as a reflector and has an electromagnetic interaction with the human body in a range where the distance d from the human body is approximately 0.2 wavelength or less. As a result, the radiation resistance is increased and the radiation efficiency is improved. As a result, the loop element 104 operating as a magnetic field mode antenna generates a human body effect in which gain is improved in the vicinity of the human body.
- the earphone cable 108 that operates as an electric field mode antenna exhibits high radiation efficiency when the distance d between the human body and the human body is about 0.2 wavelength or more, but when it is close to the human body, Radiation efficiency is abruptly deteriorated because radiation resistance decreases due to electromagnetic interaction.
- the loop element 104 and the earphone cable 108 that have a higher reception level is selected.
- the cellular phone device 100 can always obtain high reception sensitivity in both the state of being close to the human body and the state of being away from the human body while watching the television broadcast.
- a switching effect on the human body effect of about 3 dB to 10 dB can be obtained as compared with the case where only one of the magnetic field mode antenna and the electric field mode antenna is used.
- the helical element 111 is selected instead of the earphone cable 108. Since the helical element 111 operates as an electric field mode antenna, the above-described switching effect with respect to the influence on the human body can be obtained in this case as well. However, since the helical element 111 is slightly inferior in performance to the earphone cable 108, the gain of the helical element 111 is less than the earphone cable 108 when the distance d from the human body is about 0.2 wavelength or more. Compared to that, it is about 2dB lower.
- the earphone cable 108 is connected to the antenna. It is preferable to preferentially select as In this cellular phone device 100, switching by the connection panel terminal 122 and the antenna connection terminal 121 in the earphone connector 109 realizes a function of preferentially selecting the earphone cable 108 as an antenna.
- the helical element 111 is selected as an antenna.
- this helical element 111 is slightly inferior in performance to the earphone cable 108, it is slightly more than the performance of the loop element 104, particularly when the distance d from the human body is about 0.2 wavelength or more. High performance can be obtained, and polarization diversity can be achieved.
- the distance d between the cellular phone device 100 and the human body is separated by about 0.2 wavelength or more. It is thought that there are many states.
- the cellular phone device 100 is operated to select the electric field mode antenna side, that is, the broadcast receiving circuit 110 side, as an initial selection when the power is turned on or when the function is turned on.
- the reception sensitivity can be obtained as an initial value.
- the force electric field mode antenna using earphone cable 108 as an electric field mode antenna which is arranged outside mobile phone device 100 and is detachable and has a high gain is not limited to this.
- a telescopic antenna or a detachable antenna that can protrude outside the mobile phone device 100 may be used.
- the electric field mode antenna of the cellular phone device 100 is an electric field mode antenna (main electric field mode antenna) that is detachable and has a high gain when attached. As long as it functions as a complementary electric field mode antenna (sub-electric field mode antenna) and further performs the diversity operation with the magnetic field mode antenna.
- this cellular phone device 100 by setting the main electric field mode antenna or the sub electric field mode antenna as an initial value for antenna selection (master side antenna), high reception sensitivity can be set as an initial value. Obtainable.
- the force loop element 104 in which the loop element 104 is built in the upper housing 101 is not covered with the hand of the user 300 in the usage state. You can place it anywhere!
- the arrangement direction of the loop element 104 is not limited to the above-described direction.
- the loop opening surface is arranged in parallel with the longitudinal direction of the mobile phone device 100, the effect of polarization diversity is low. However, a switching effect on the human body effect can be obtained.
- the electric field mode antenna selected when the earphone cable 108 is not connected is not limited to the helical element 111, and a meandering conductor element, a monopole element, a whip element, or the like is arranged inside or outside the housing. Also good.
- one or all of the broadcast receiving antennas may be shared with the mobile phone communication antenna.
- the loop element 104 is built-in antenna for mobile phone communication. You can share it as
- this cellular phone device 100 As shown in FIG. 3, the force configured to switch the earphone cable antenna and another electric field mode antenna by the mechanical switch in the earphone connector 109. Switching of this antenna For example, as shown in FIG. 6, switching is performed by a high-frequency switch 126 composed of a PIN diode or FET. It is good also as a structure.
- the antenna switching control unit 127 detects the received signal strength in the broadcast receiving circuit 110, and the received signal level thereof.
- the high-frequency switch 126 may be switched according to the operation.
- the antennas may be switched by the operation of the user 300.
- the foldable mobile phone device 100 has been described. However, the same effect can be obtained in a straight-type mobile phone device that is not divided into the upper housing 101 and the lower housing 102. Needless to say.
- the force earphone cable antenna and the helical element 111 described as a configuration for switching between the earphone cable antenna and the helical element 111 are connected to a power distributor or a directional coupler.
- a power distributor or a directional coupler When power combining or power distribution / feeding is performed by the above, the effect is slightly reduced, but the above-mentioned essential effects can be obtained.
- the mobile phone device 100 not only the earphone cable 108 and the helical element 111, but also a part or all of a plurality of mounted antenna elements is subjected to power synthesis or power. A certain effect can be obtained even when distributed power feeding is performed.
- FIG. 7 is a schematic perspective view showing the basic configuration of the mobile phone device according to Embodiment 2 of the present invention.
- FIG. 7 the same components as those in FIG. The detailed explanation is saved.
- the loop element 104 operates as a television broadcast receiving built-in antenna.
- the loop element 104 is impedance-matched by the matching circuit 105 in the range of about 470 MHz to 700 Hmz, which is a television broadcast frequency.
- the received signal from the matching circuit 105 is input to a distribution / combination circuit 128 serving as signal synthesis means.
- the earphone 107 is for a user 300 (see FIG. 4) to insert it into his / her ear and listen to the sound of the television broadcast, and is connected to the earphone connector 109 via the earphone cable 108.
- Earphone cable 108 also operates as an external antenna that transmits audio signals and receives television broadcast waves.
- the length of the earphone cable 108 is set to about 50 cm to 100 cm, for example. In addition, the length of the earphone cable 108 is about 0.8 to 2.3 wavelengths in the television broadcast reception band.
- a helical element 111 that operates as a built-in antenna for receiving television broadcasts is disposed at the upper end of the upper casing 101 of the mobile phone device 600.
- This helical element 111 has a conductive element at the upper end of the upper casing 101 around the outer surface of the upper casing 101 (housing case) several times with a predetermined element spacing (for example, about 1 mm). It is formed to wrap around.
- Helical element 111 configured as described above operates as a helical antenna in a normal mode, and is arranged so that the axis of the helical is in the longitudinal direction of the mobile phone, that is, the Z-axis direction.
- the total length of the conductor element constituting the helical element 111 is set to about 0.25 wavelength (1Z4 wavelength) to 0.625 wavelength (5Z8 wavelength) in the television broadcast reception band.
- the helical element 111 is impedance-matched by the matching circuit 112 in the range of about 470 MHz to 700 MHz, which is a television broadcast frequency.
- the television broadcast signal received by 111 is input to the distribution / combination circuit 128 via the earphone connector 109.
- the earphone connector 109 has a function of switching between the television broadcast signal received by the earphone cable 108 and the television broadcast signal received by the helical element 111 and inputting them to the distribution / synthesis circuit 128.
- the distribution / synthesis circuit 128 is a distribution / synthesis circuit composed of, for example, a Wilkinson-type circuit, and has a function of synthesizing television broadcast signals from the earphone connector 109 and the matching circuit 105 with the same amplitude and the same phase. Have it.
- the television broadcast signal synthesized by distribution / synthesis circuit 128 is input to broadcast reception circuit 106 and demodulated into a digital signal.
- the digital signal demodulated by the broadcast receiving circuit 106 is subjected to video processing by the video processing unit 114 and displayed on the display unit 115.
- FIG. 8 shows the average gain of each antenna in the mobile phone device according to the second embodiment, that is, the loop element 104 and the earphone cable 108 in a state where the television broadcast shown in FIG. 4 is viewed. And the horizontal plane when combining the TV broadcast signals received in (
- FIG. 8 shows a distance d (see FIG. 4) between the face of the user 300 and the display unit 115 of the mobile phone device 600 on the horizontal axis, and the horizontal axis when the distance d is changed on the vertical axis.
- XY plane The average gain is plotted.
- symbol a represents the average gain of the loop element 104
- symbol b represents the average gain of the earphone cable antenna
- symbol c represents the average when the loop element 104 and the earphone cable antenna are distributed and combined. Show the gain! / Speak.
- this cellular phone device 600 the signals of the electric field mode antenna, the magnetic field mode antenna, and the antennas having different modes are combined, so that the characteristics having the advantages of both modes are obtained. .
- the earphone cable 108 that operates as an electric field mode antenna has a radiation resistance that decreases rapidly due to electromagnetic interaction with the human body in the state of being close to the human body, so that the radiation efficiency is rapidly deteriorated.
- antennas having different modes ie, an electric field mode antenna and a magnetic field mode antenna.
- the degradation force S when approaching the human body is reduced by the operation of the magnetic field mode antenna. Therefore, in this cellular phone device 600, an improvement effect on the human body effect of about 5 dB can be obtained as compared with the earphone cable 108 operating as an electric field mode antenna.
- the loop element 104 operating as a magnetic field mode antenna has a distance d of 0 between the human body.
- the distance d between the human body and the d is 0.2 wavelength or more, compared with the loop element 104 operating as a magnetic field mode antenna,
- a configuration in which the earphone cable 108, which is a force electric field mode antenna, and the helical element 111 are distributed and combined as described in the configuration in which the electric field mode antenna and the magnetic field mode antenna are distributed and combined has a certain effect. can get.
- distribution / combining is not limited to earphone cable 108 and helical element 111, and some or all of a plurality of mounted antenna elements are combined. Even if it is performed, a certain effect can be obtained.
- the distribution / synthesis circuit 128 is not limited to the distribution / synthesis circuit configured by the Wilkinson circuit, and may be a circuit that synthesizes a high-frequency signal such as a directional coupler.
- the improvement is even higher. An effect is obtained.
- the cellular phone device according to the present invention can be used both when the cellular phone is close to the human body and when it is separated from the human body, regardless of whether or not the earphone is used, while watching the television broadcast. Regardless of the positional relationship and orientation in which the mobile phone is placed in the vicinity of the human body, the antenna performance is always high, which is useful as a mobile phone device that can improve the reception performance.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Support Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05752902A EP1770875A1 (en) | 2004-07-26 | 2005-06-22 | Mobile telephone device |
US11/658,149 US20080039043A1 (en) | 2004-07-26 | 2005-06-22 | Mobile Telephone Device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004217673A JP2006041826A (ja) | 2004-07-26 | 2004-07-26 | 携帯電話装置 |
JP2004-217673 | 2004-07-26 |
Publications (1)
Publication Number | Publication Date |
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WO2006011322A1 true WO2006011322A1 (ja) | 2006-02-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/011421 WO2006011322A1 (ja) | 2004-07-26 | 2005-06-22 | 携帯電話装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080039043A1 (ja) |
EP (1) | EP1770875A1 (ja) |
JP (1) | JP2006041826A (ja) |
CN (1) | CN1989705A (ja) |
WO (1) | WO2006011322A1 (ja) |
Cited By (2)
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US7706849B2 (en) | 2006-02-22 | 2010-04-27 | Mediatek Inc. | Mobile communication devices with internal antennas |
CN102036028A (zh) * | 2009-09-29 | 2011-04-27 | 日立视听媒介电子股份有限公司 | 接收装置及其天线切换电路和调谐器模块 |
Families Citing this family (16)
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WO2007100004A1 (ja) * | 2006-03-01 | 2007-09-07 | Pioneer Corporation | 情報再生装置、情報再生方法、情報再生プログラムおよび記録媒体 |
JP4904895B2 (ja) | 2006-04-12 | 2012-03-28 | ソニー株式会社 | アンテナ装置 |
JP4930851B2 (ja) * | 2007-10-15 | 2012-05-16 | Necカシオモバイルコミュニケーションズ株式会社 | アンテナ構造、及び携帯通信機器 |
US8116831B2 (en) * | 2007-11-29 | 2012-02-14 | Motorola Mobility, Inc. | Hand-held communication device with auxiliary input apparatus, and method |
US8325955B2 (en) * | 2008-03-17 | 2012-12-04 | Auden Techno Corp. | Method for improving compatibility of hearing aid with antenna |
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Also Published As
Publication number | Publication date |
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JP2006041826A (ja) | 2006-02-09 |
EP1770875A1 (en) | 2007-04-04 |
CN1989705A (zh) | 2007-06-27 |
US20080039043A1 (en) | 2008-02-14 |
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