Electromagnetic radiation protection device of a mobile phone

An electromagnetic radiation protection device of a mobile phone installed at one side of an antenna of a mobile phone. The device comprises an electromagnetic wave absorbing piece, a dielectric plate, an electronic joint loop, a negative electrode lead, etc. The electromagnetic wave absorbing piece serves to absorb the electromagnetic wave toward the user's head. Then the electromagnetic wave irradiates to the negative electrode lead of a power source through the electronic joint loop and the negative electrode lead. Thereby, the electromagnetic radiation from the mobile phone to user's head will be reduced effectively, and the threat of brain harm is also reduced.

BACKGROUND OF THE INVENTION
 In current communication world, those controlling the communication
 technology will become a winner of current information world. Thus,
 communication devices have become necessary equipment. Since mobile phones
 are more and more popular, almost everybody has one. However, with the
 increment of communication traffic, electromagnetic radiation is also
 filled in the air. But this is harmful to the human body. Especially, the
 electromagnetic radiation from the mobile phone of user himself (herself)
 because the radiation from user's mobile phone is very near the body of
 user, especially the brain.
 The current mobile phone system has been advanced to digital mobile phones
 from early analog mobile phones, the frequency band ranges from 800 MHz to
 1000 MHz, recently, 1800 MHz frequency is also included. Such high
 frequency electromagnetic radiation has a great transmission property.
 When the mobile phone with a power of 0.5 watt is emitted, it the mobile
 phone is near the neck portion of user, about 0.2 watt of power will
 penetrate through the head of the user and is probably produced a bad
 effect.
 SUMMARY OF THE INVENTION
 Accordingly, the primary object of the present invention is to provide an
 electromagnetic radiation protection device of a mobile phone installed at
 one side of an antenna of a mobile phone, thereby 80% of electromagnetic
 radiation is absorbed, therefore the sub-effect of the mobile phone is
 reduced greatly.
 Another object of the present invention is to provide an electromagnetic
 radiation protection device of a mobile phone installed at one side of an
 antenna of a mobile phone. The device comprises an electromagnetic wave
 absorbing piece, a dielectric plate, an electronic joint loop, a negative
 electrode lead, etc. The electromagnetic wave absorbing piece serves to
 absorb the electromagnetic wave toward the user's head. Then the
 electromagnetic wave irradiates to the negative electrode lead of a power
 source through the electronic joint loop and the negative electrode lead.
 A further object of the present invention is to provide an electromagnetic
 radiation protection device of a mobile phone, which may be assembled and
 used easily and is effective for isolating the electromagnetic radiation
 of a mobile phone. The device is formed simply by a plurality of metal
 pieces, plastic piece, and electronic circuit.
 The various objects and advantages of the present invention will be more
 readily understood from the following detailed description when read in
 conjunction with the appended drawing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 As shown in FIGS. 1, 2 and 3, the present invention is formed by an
 electromagnetic wave absorbing piece 8, a dielectric plate 9, an
 electronic joint loop 7, a negative electrode lead 6, etc. The whole
 structure is further packaged with the signaling joint 1, antenna fixture
 2 (negative electrode), an insulating cover of the signaling joint 3, an
 antenna joint 3, an antenna joint 4, a helical antenna 5, etc of the
 antenna structure by plastic or rubber filling. The electromagnetic wave
 absorbing piece 8 is installed at the side near the helical antenna 5. The
 dielectric plate 9 serves to isolate the electromagnetic wave absorbing
 piece 8 and the helical antenna 5. The lower end of the electromagnetic
 wave absorbing piece 8 is connected to the input of the joint of the
 electronic joint loop 7. The output of the joint of the electronic joint
 loop 7 is connected to the negative electrode lead 6. Another end of the
 negative electrode lead 6 is connected to the negative electrode of the
 power source of a mobile phone (such as the antenna fixing seat (2)). In
 practical using, the original antenna structure is still a preferred
 embodiment and is convenient in using. Although it is not embodied by the
 antenna, the present invention can be used at the periphery of the antenna
 for achieving the predict effect.
 When the mobile phone is in using, the signal is carried by electromagnetic
 wave and thus is sent by the antenna. This signal electromagnetic wave is
 energetic and transmitted, that is so called electromagnetic radiation.
 The emission of the electromagnetic radiation is omnidirectionary around
 the cylinder of the antenna as a center. The strength of the
 electromagnetic radiation is decreased with the square of the distance to
 the antenna. When the mobile phone is near the ear, it is apparently that
 the head of the user is within the range of the electromagnetic radiation.
 In the present invention, an electromagnetic wave absorbing piece 8 serves
 to absorb the electromagnetic wave radiating toward the head. The material
 of the electromagnetic wave absorbing piece may be a metal and located at
 the neck of the user in the same side of the antenna 5.
 The object of the dielectric plate 9 serves to avoid the directly contact
 of the electromagnetic wave absorbing piece 8 and the helical antenna 5.
 Thus, the electromagnetic wave absorbing piece 8 is assured to perform the
 function of absorption. The material of the dielectric plate 9 is plastic
 or other material. The width of the material of the dielectric plate 9
 will effect the absorption efficiency of the electromagnetic wave
 absorbing piece 8. The wider the width, the lower the absorption
 efficiency. While the absorbing radiation energy will irradiate to the
 negative electrode of the power source system through the negative
 electrode lead 6.
 If the electromagnetic wave absorbed by the electromagnetic wave absorbing
 piece 8 is not be cancelled, one half of the electromagnetic wave will be
 reflected toward the direction of the antenna. While another one half will
 transfer toward the head of the user. Thus, the received electromagnetic
 wave is necessary to be cancelled. The way for canceling the
 electromagnetic wave is that the electronic joint loop 7 is connected to
 the negative electrode lead 6, then the electromagnetic wave is converted
 as a current to flow to the negative electrode of the power source so as
 to be cancelled. One end of the negative electrode lead 6 is connected to
 the output of the electronic joint loop 7, while another end thereof is
 connected to the negative electrode of the power source system of a mobile
 phone. The power source system may be circularly around the antenna fixing
 seat 2. The electromagnetic wave absorbing piece absorbed by the
 electromagnetic wave absorbing piece 8 is converted as current by the
 negative electrode lead 6 and then flow to the negative electrode of the
 power source for canceling, then the electromagnetic wave toward user's
 head is canceled and therefore the harm to the user is reduced to a
 minimum.
 The electronic joint loop 7 is combined to an electronic (or mechanic)
 joint through a signal driver. The signal driver receives the signal from
 the signaling joint for switching over the electronic (or mechanic) joint.
 Namely, in standby, the antenna severs to receive signal, thus the signal
 is as small as not to drive a signal, then the electronic (or mechanic)
 joint is opened. Now, the electromagnetic wave absorbing piece 8 has no
 any effect. While as a ring is actuated or in speaking, the antenna is in
 an emitting state, a larger signal will be sent from the signaling joint 1
 to the antenna for emitting. The signal is large enough to drive the
 signal driver and force the electronic (or mechanic) joint to close. Now,
 the electromagnetic wave absorbing piece 8 will act. Namely, the radiating
 energy absorbed by the electromagnetic wave absorbing piece 8 will be
 transferred to the negative electrode of the power source through the
 joint so that the electromagnetic radiation is reduced properly and the
 harm to human brain is decreased.
 The advantages of the present invention will now described in the
 following:
 1. The electromagnetic radiation from the conventional antenna to the head
 of the user will be decreased greatly.
 2. In dial the handset and in standby condition, the receiving signal in
 the head of user is approximately equal to that of the conventional one.
 3. The transceiver of the original user is unnecessary to add any extra
 devices. It is only needed to update the original antenna to the antenna
 of the present invention. Even the transceiver is assembled with the
 antenna of the present invention.
 Although the present invention has been described with reference to the
 preferred embodiments, it will be understood that the invention is not
 limited to the details described thereof. Various substitutions and
 modifications have been suggested in the foregoing description, and others
 will occur to those of ordinary skill in the art. Therefore, all such
 substitutions and modifications are intended to be embraced within the
 scope of the invention as defined in the appended claims.