• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an apparatus for alarming when an electromagnetic wave radiated from a mobile communication terminal is excessively exposed to a human body, and in particular, when a user uses the mobile communication terminal, the electromagnetic wave cannot be radiated by an antenna due to an incorrect call habit or method. It is an object of the communication terminal to continuously increase the output so that the user can be alerted when the electromagnetic wave is excessively transmitted to the human body. To this end, the present invention provides a transmitter for modulating and outputting transmission data transmitted from a mobile station modem; A power amplifier receiving and amplifying and transmitting a transmission signal transmitted from the transmitter; A circulator for transmitting a transmission signal input from the power amplifier to an antenna through a duplexer; And a power detector that receives the transmission signal reflected from the duplexer due to the antenna mismatch through the circulator, senses the power of the signal, and transmits the signal to the mobile station modem. Therefore, the present invention has the effect of minimizing the effects of electromagnetic waves by informing the alarm or lamp so that electromagnetic waves are not induced to the human body by excessive transmission power when the antenna mismatch is increased due to a wrong communication habit or carelessness of the user.
    公开号:KR20030096922A
    申请号:KR1020020034019
    申请日:2002-06-18
    公开日:2003-12-31
    发明作者:천호철
    申请人:엘지전자 주식회사；
    IPC主号:
    专利说明:

    ELECTROMAGNETIC WAVE ALARM APPARATUS USING CIRCULATOR IN MOBILE TERMINAL}
    [7] The present invention relates to an apparatus for alarming when an electromagnetic wave radiated from a mobile communication terminal is excessively exposed to a human body, and in particular, when a user uses the mobile communication terminal, the electromagnetic wave cannot be radiated by an antenna due to an incorrect call habit or method. The present invention relates to an electromagnetic wave alarm device using a circulator in a mobile communication terminal that can alert a user when an electromagnetic wave is excessively transmitted to a human body by continuously increasing the output.
    [8] Looking at the conventional technology for alarming the output of excessive electromagnetic waves are as follows.
    [9] As one embodiment of the prior art, Korean Patent Laid-Open Publication No. 2001-0107013 (name: electromagnetic wave warning device of a mobile communication terminal) warns a user of a mobile communication terminal when a power level of an RF signal, which is a time when harmful electromagnetic waves are output, is higher than a certain level. In an embodiment, the apparatus may include: means for extracting a changing RF input or output signal, a detector for detecting a constant amplitude signal from the signal extracted by the RF signal extracting means, and a switching on when the detection signal is larger than a predetermined reference signal. Means and warning means for giving a warning when a turn-on signal is output from said switching means.
    [10] As another embodiment of the prior art, Korean Patent Laid-Open Publication No. 2000-049943 (name: electromagnetic wave alarm device of a mobile phone) is calculated by detecting an electromagnetic wave output from a mobile communication terminal and calculating the intensity and time of the detected electromagnetic wave It is configured to generate an alarm signal according to the value.
    [11] As described above, the embodiments of the two prior arts may be configured to detect an intensity of the electromagnetic wave output from the mobile communication terminal to sound an alarm when the detected intensity of the electromagnetic wave is above a certain level.
    [12] However, there is a case where the output of the mobile communication terminal must be increased inevitably according to the change of the communication environment between the base station and the mobile communication terminal.
    [13] Therefore, simply alarming when an electromagnetic wave of a certain intensity or more is detected has a problem that the user is inconvenient when talking to the other party.
    [14] In general, antenna matching of a mobile communication terminal is optimized for the case where there is no conductor or dielectric around the antenna. However, when the user holds the mobile communication terminal to the ear to talk to the other party, the brain has a change in the dielectric constant of the antenna, and a severe antenna mismatch occurs due to the lack of the ground plane due to the miniaturization of the mobile communication terminal.
    [15] As a result, since the electromagnetic waves radiated from the antenna do not reach the base station and become small, the output of the mobile communication terminal is continuously increased by controlling forward power at the base station. Accordingly, electromagnetic waves emitted from the mobile communication terminal are induced in the brain of the human body.
    [16] In addition, when making a call with the finger on the antenna or making a call with the antenna close to the head, the base station controls the transmission power of the mobile terminal to be higher.
    [17] The mobile communication terminal limits the transmission power by setting the maximum allowable output, but this is used to increase the call capacity of the code division multiple access system, not to protect the user.
    [18] In addition, there is no alarm means for preventing the mobile communication terminal from increasing the output of the antenna due to a wrong call habit of the user.
    [19] Accordingly, the present invention has been made in view of the above problems, and when the user uses the mobile communication terminal, the electromagnetic wave is not radiated through the antenna due to a wrong call habit or method, and thus the excessive electromagnetic wave is continuously raised as the output of the antenna is continuously increased. It is an object of the present invention to provide an electromagnetic wave alarm device using a circulator in a mobile communication terminal that can alert when the body is abandoned to the human body.
    [1] 1 is an exemplary view showing a configuration of an electromagnetic wave alarm device according to the present invention.
    [2] ** Description of the symbols for the main parts of the drawings **
    [3] 10 mobile station modem 20 transmitter
    [4] 30: power amplifier 40: circulator
    [5] 50: duplexer 60: antenna
    [6] 70: power detector
    [20] The present invention for achieving the above object is a transmitter for modulating and outputting the transmission data transmitted from the mobile station modem; A power amplifier receiving and amplifying and transmitting a transmission signal transmitted from the transmitter; A circulator for transmitting a transmission signal input from the power amplifier to an antenna through a duplexer; And a power detector that receives the transmission signal reflected from the duplexer due to the antenna mismatch through the circulator, senses the power of the signal, and transmits the signal to the mobile station modem.
    [21] Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
    [22] 1 is a block diagram showing a configuration of an electromagnetic wave alarm device according to the present invention, and a transmitter 20 for modulating and outputting transmission data transmitted from a mobile station modem 10, as shown therein; A power amplifier 30 which receives the amplified signal transmitted from the transmitter 20 and amplifies and outputs it; A circulator 40 for transmitting a transmission signal input from the power amplifier 30 to the antenna 60 through a duplexer 50; The mobile communication of the present invention comprises a power detector 70 receiving the transmission signal reflected from the duplexer 50 due to the antenna mismatch through the circulator 40 and sensing the power of the signal and transmitting it to the mobile station modem 10. The electromagnetic alarm device using the circulator in the terminal will be described.
    [23] When the user talks to the other party, the mobile communication terminal and the base station control forward / reverse power control with each other to adjust the transmission / reception output.
    [24] The transmission signal is output from the transmitter 20 and amplified by the power amplifier 30 and radiated back to the atmosphere via the antenna 60 via the circulator 40 and again via the circulator 40.
    [25] At this time, when the user touches the antenna 60 or touches the face, antenna mismatch occurs, and the transmission signal is reflected from the antenna 60 and transmitted to the power detector 70 through the circulator 40.
    [26] Here, the circulator 40 transmits the signal reflected from the antenna 60 to the power detector 70 instead of the power amplifier 30 due to its unique characteristics.
    [27] The power detector 70 calculates the power of the reflected signal, and the mobile station modem 10 receives the reflected power and converts it digitally using an analog / digital converter.
    [28] The mobile station modem 10 compares the digitally converted reflected power with the reference power and determines that the power above the reference is reflected so that the user can recognize the alarm sound or the alarm lamp.
    [29] As described in detail above, the present invention has an effect of minimizing the effects of electromagnetic waves by informing the alarm or lamp so that electromagnetic waves are not induced to the human body by excessive transmission power when the antenna mismatch is increased due to a wrong call habit or carelessness of the user. .
    [30] In addition, there is an effect of improving the talk time of the mobile communication terminal by reducing the power consumption by alerting when unnecessary transmission output occurs.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] A transmitter for modulating and outputting transmission data transmitted from the mobile station modem; A power amplifier receiving and amplifying and transmitting a transmission signal transmitted from the transmitter; A circulator for transmitting a transmission signal input from the power amplifier to an antenna through a duplexer; And a power detector configured to receive a transmission signal reflected from the duplexer due to the antenna mismatch through a circulator, detect a power of the signal, and transmit the detected signal to the mobile station modem.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-06-18|Application filed by 엘지전자 주식회사
    2002-06-18|Priority to KR1020020034019A
    2003-12-31|Publication of KR20030096922A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020020034019A|KR20030096922A|2002-06-18|2002-06-18|Electromagnetic wave alarm apparatus using circulator in mobile terminal|
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