KR20060014657A - Multi-channel transceiver and method of mobile communication terminal - Google Patents

Abstract

The present invention is equipped with a dual external antenna to improve the antenna characteristics and multi-channel reception in the converged mobile communication terminal having a CDMA, GPS, DMB, BLUETOOOTH function, according to the characteristics of each frequency band It is optional.

When using the multi-channel transmission and reception antenna apparatus and the transmission and reception method of the mobile communication terminal of the present invention, it is possible to improve the characteristics of the radiation pattern of the antenna to increase the transmission and reception sensitivity, and also to lower the value of electromagnetic waves harmful to the human body.

 The improved method eliminates the use of the internal antenna provided inside the mobile communication terminal, thereby making it possible to reduce the slip size of the mobile communication terminal. Further, the additional design of parts having new functions by utilizing the secured space can be achieved. It is to facilitate.

The present invention is provided with a matching circuit unit for DMB, BLUETOOOTH and CDMA, GPS matching circuit unit to match the corresponding frequency characteristics at the upper and lower ends of one side of the printed circuit board to set feeding points; Upper and lower external antennas are vertically disposed on the outside of the printed circuit board so as to be folded to one another or to be unfolded in opposite directions to each other by a slide method, so that the selected upper and lower external antennas correspond to a frequency. Provided is a multi-channel transceiver of a mobile communication terminal which is connected to and energized.

On the other hand, starting the use of the antenna corresponding to each frequency band in the CDMA, GPS, DMB, BLUETOOTH functions of the converged mobile communication terminal; After this step, inquiring whether a mode is used for the CDMA and GPS functions; Using a lower external antenna in the CDMA and GPS mode after this step; In the step, automatically switching to DMB, BLUETOOH function mode when not in CDMA, GPS mode; In this step, using the upper antenna in the DMB, BLUETOOTH mode; In the step (D), if the DMB, BLUETOOTH mode is not provided, the multi-channel transmission and reception method of the mobile communication terminal comprising a return step to return to the step of asking whether the mode for the CDMA, GPS function is provided.

Terminal, Multi, Antenna, Transmit, Receive

Description

Multi-channel transceiver and method of mobile communication terminal {Multi Channel Device and Method of Mobile Communication Terminal}             

1 is a plan view schematically illustrating an interior of a general mobile communication terminal in an open state.

2 is a plan view schematically showing a state of use of an external antenna for CDMA, DMB, and GPS as a mobile communication terminal of the present invention is open;

3 is a plan view schematically showing a state of use of the external antenna for the DMB, BLETOOTH as the mobile communication terminal of the present invention is open;

4 is a flowchart illustrating a multi-channel transmission and reception method according to the present invention.

     <Description of the symbols for the main parts of the drawings>

10: convergence terminal 12: external antenna for CDMA, DMB, GPS

14: printed circuit board 16: built-in antenna for DMB

18: Built-in antenna for Bluetooh 20: LCD

22: camera 24: data line

30: Matching circuit part for DMB, BLUETOOTH 32: Matching circuit part for CDMA, GPS                 

34,36 feeding point 38: conductor

40: upper outer antenna 42: lower outer antenna

44,46: Whip 48: Slide Groove

The present invention relates to a multi-channel transmission and reception apparatus and method of a mobile communication terminal, and more particularly, to provide an antenna characteristic suitable for a converged mobile communication terminal and an external antenna having a dual structure to enable multi-channel reception according to a frequency band. It is made available to users selectively.

In addition, by improving the characteristics of the radiation pattern of the antenna to further improve the transmission and reception sensitivity, and also to reduce the value that the electromagnetic wave generated from the antenna is absorbed by the human body.

This improved approach eliminates the use of built-in antennas and facilitates the additional design of parts with new functions through the secured space.

In general, converged mobile communication terminals are referred to as Code Division Multiple Access (hereinafter referred to as CDMA), Global Positioning System (hereinafter referred to as GPS), and Digital Multimedia Broadcasting (DMB). Abbreviated as), and has a wireless data communication (BLUETOOTH) function.

Attached Exemplary Drawings The general convergence mobile communication terminal 10 shown in FIG. 1 is provided with an external antenna 12 for CDMA, GPS, and DMB. In addition, the printed circuit board 14 is provided with a built-in antenna 16 for DMB and a built-in antenna 18 for BLUETOOTH, respectively. That is, the external antenna 12 and the internal antennas 16 and 18 of the frequency band corresponding to each function are separately installed.

For reference, the DMB is a mobile multimedia broadcasting that can enjoy high quality voice (radio) and video service (TV) while moving, and is divided into satellite and terrestrial wave. First of all, terrestrial waves receive and watch radio waves transmitted from a transmission station like regular TVs, and satellites receive and watch radio waves that are scattered throughout the country.

However, when a plurality of built-in antennas 16 and 18 are installed on the printed circuit board 14 of the mobile communication terminal 10, there is a difficulty in securing an installation area and a space. If the installation takes up a lot of space and space, there is a problem that it is difficult to install additional components.

On the other hand, there is also a converged mobile communication terminal 10 to install a plurality of external antenna 12, but if a plurality of external antenna 12 is installed, there is a problem that a lot of constraints on the design of the exterior design of the mobile communication terminal 10 There is this.

In particular, during the CDMA and GPS transmission and reception of the 800MHz band affected by the reception sensitivity and radio waves, the external antenna 12 is generally pulled upward. In this case, regardless of the folder method and the slide method of the mobile communication terminal 10, the external antenna 12 is drawn out close to the upper case, and thus the LCD 20, the camera 22, and the data provided in the upper case. There is a problem that the transmission and reception sensitivity is lowered due to the influence of radio interference between the line 24 and the external antenna 12.

In addition, most of the external antenna (12) provided in the mobile communication terminal 10 is designed to be pulled upward, the user's body structure is close to the head portion, and accordingly the human body by the electromagnetic waves generated from the external antenna 12 There is a problem that will adversely affect.

Accordingly, the present invention has been invented to solve the above problems, and an object thereof is to enable an appropriate antenna characteristic and multi-channel reception for a corresponding function in a converged mobile communication terminal.

In addition, it is another object to improve the characteristics of the radiation pattern of the antenna to improve the transmission and reception sensitivity, and to lower the value absorbed by the human body by electromagnetic waves generated from the mobile communication terminal.

In order to achieve the above object, the present invention provides a matching circuit part for DMB and BLUETOOOTH and a CDMA and GPS matching circuit part to set a feeding point so as to correspond to the corresponding frequency characteristics at the upper and lower ends of one side of the printed circuit board. ; Upper and lower external antennas are vertically disposed on the outside of the printed circuit board so as to be folded to one another or to be unfolded in opposite directions to each other by a slide method, so that the selected upper and lower external antennas correspond to a frequency. There is a technical feature in the multi-channel transceiver of the mobile communication terminal is energized and connected to.

On the other hand, starting the use of the antenna corresponding to each frequency band in the CDMA, GPS, DMB, BLUETOOTH functions of the converged mobile communication terminal; After this step, inquiring whether a mode is used for the CDMA and GPS functions; Using a lower external antenna in the CDMA and GPS mode after this step; In the step, automatically switching to DMB, BLUETOOH function mode when not in CDMA, GPS mode; In this step, using the upper antenna in the DMB, BLUETOOTH mode; In the step (D), if the DMB, BLUETOOTH mode is not in the multi-channel transmission and reception method of the mobile communication terminal consisting of a return step to return to the step asking whether the mode for the CDMA, GPS function has a technical feature.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a plan view schematically illustrating a state of use of an external antenna for CDMA, DMB, and GPS as an open state of a mobile communication terminal of the present invention, and FIG. 3 is a state in which a mobile communication terminal of the present invention is opened, and includes a DMB and BLETOOTH. A plan view schematically showing a state of use of the external antenna for use.                     

Referring to the accompanying drawings, first, the matching circuit for DMB, BLUETOOOTH configured to fit each frequency characteristic at the lower portion corresponding to the upper portion vertically at one end of the printed circuit board 14 of the mobile communication terminal 10 (30) ) And a matching circuit 32 for CDMA and GPS to set feeding points 34 and 36, respectively. The feeding points 34 and 36 are electrically conductive conductors 38 (for example, iron plate and copper plate). It is connected and provided.

And, the outer side corresponding to the upper exterior antenna 40 and the lower exterior antenna 42 is configured to be inserted into each other by folding or folded or unfolded by a slide method. This structure description will be described later.

The upper external antenna 40 is an antenna suitable for the frequency band of the DMB, BLUETOOTH function, the lower external antenna 42 is used an antenna suitable for the frequency band of the CDMA, GPS function.

In the accompanying drawings of the present invention, the upper and lower exterior antennas 40 and 42 and the upper and lower cases forming the exterior of the mobile communication terminal for explaining the arrangement and operation of the feeding points 34 and 36 are deleted. Although shown in the actual product, all the external antennas 40 and 42 are accommodated inside the lower case forming the exterior of a typical mobile communication terminal 10 so that one end of the upper and lower external antennas 40 and 42 may be disposed. All parts except for this are covered, and thus do not affect the appearance design of the mobile communication terminal 10 at all.

On the other hand, the upper sheath antenna 40 is provided with a whip 44 having a predetermined length, the inside of the whip 44 is a slide groove so that the whip 46 provided in the lower sheath antenna 42 can be inserted into the slide groove 48 is formed.

In addition, a multi-switching stopper 50 is provided at the lower end of the whip 44 of the upper antenna 40 so as to be electrically connected to the conductor 38 while reciprocating between the feeding points 34 and 36. have.

Furthermore, the multi-switching stopper 50 is made of a conductor, and the whip 46 of the lower sheathing antenna 42 is slide-inserted into the upper sheathing antenna 40 through the bottom of the multi-switching stopper 50. If you can, any structure is fine.

4 is a flowchart illustrating a multi-channel transmission and reception method according to the present invention.

Referring to the drawings, first, a user starts using an antenna corresponding to each frequency band in accordance with CDMA, GPS, DMB, and BLUETOO functions of a converged mobile communication terminal (A); (B) asking whether the CDMA, GPS function mode is requested after this step; After this step, in the case of CDMA and GPS modes, a step (C) of using a lower external antenna is performed.

Further, in the step (B), the step (D) to automatically switch to the DMB, BLUETOO function mode when the CDMA, GPS mode is not; In the step (D), in the case of the DMB, BLUETOOTH mode, using the upper antenna (E);

If the DMB is not in the DMB, BLUETOOTH mode, the process returns to the step B.

Accordingly, when using a converged mobile communication terminal having a CDMA, GPS, DMB, and BLUETOOTHDML function, referring to the accompanying drawings, FIGS. 2 and 3, for example, when transmitting / receiving a DMB, BLUETOOT band, an upper external antenna (40 ) Is pulled out completely in the upper direction, the multi-switching stopper 50 interworking with the upper exterior antenna 40 is located at the upper feeding point 34, and the energization connection is made to transmit and receive the frequencies of the DMB and BLUETOOTHL bands. Done.

On the other hand, if you want to transmit and receive the CDMA, GPS band, the moment when the lower external antenna 42 is pulled out completely, the multi-switching stopper 50 is located at the feeding point 36, the conduction connection is made to CDMA, Transmit and receive frequencies in the GPS band.

That is, according to the characteristics of the frequency band to be transmitted and received, the user selects the upper and lower external antennas 40 and 42 to transmit and receive.

In particular, when transmitting and receiving CDMA and GPS in the 800 MHz band affected by reception sensitivity and radio wave, the lower external antenna 42 is opposed to the position where the LCD 20, the camera 22, and the data line 24 are provided. By drawing in the direction, radio interference is first prevented and reception sensitivity is improved.

In addition, when the lower exterior antenna 42 is pulled out in the lower direction, it is farther away from the user's head than in the prior art, thereby rapidly reducing the harmfulness of the human body by electromagnetic waves generated from the antenna.

In addition, when the upper and lower external antennas 40 and 42 of the present invention are used, the frequency bands can be divided and used to satisfy the antenna structure required for the converged mobile communication terminal.

As described above, the present invention provides dual antennas to improve antenna characteristics and multi-channel reception in a converged mobile communication terminal having CDMA, GPS, DMB, and BLUETOTH functions. It is possible to selectively use according to the, and accordingly there is an effect that can satisfy the antenna structure required by the converged mobile communication terminal.

In addition, the present invention can be expected to further improve the characteristics of the radiation pattern of the antenna to increase the air sensitivity, and to lower the value of the electromagnetic wave generated from the mobile phone is absorbed by the human body.

In addition, the use of the present invention, the use of the built-in antenna provided in the inside of the mobile communication terminal is eliminated, it is also possible to obtain the effect that the additional design of the part having a new function through the secured space.

Claims (3)

A matching circuit part for DMB and BLUETOOOTH and a CDMA and GPS matching circuit part are provided at the upper and lower ends of one side of the printed circuit board to match the frequency characteristics, respectively, and set feeding points; Upper and lower external antennas are vertically disposed on the outside of the printed circuit board so as to be folded to one another or to be unfolded in opposite directions to each other by a slide method, so that the selected upper and lower external antennas correspond to a frequency. Multi-channel transceiver of a mobile communication terminal, characterized in that the electricity is connected to. The method of claim 1, The multi-switch stopper is fixed to the bottom of the whip of the upper sheathing antenna so as to be energized at a feeding point, and the inside of the whip of the upper sheathing antenna slides so that the whip of the lower sheathing antenna can be inserted through the bottom of the multi-switching stopper Multi-channel transceiver of a mobile communication terminal, characterized in that the groove is formed. Starting the use of an antenna corresponding to each frequency band in the CDMA, GPS, DMB, and BLUETOO functions of the converged mobile communication terminal (A); (B) asking whether a mode for the CDMA and GPS functions is performed after this step; (C) using the lower external antenna in the CDMA and GPS modes after this step; In step (B), step (D) automatically switching to DMB, BLUETOOH function mode when not in CDMA, GPS mode; Using the upper antenna in the step (D) of DMB, BLUETOOTH mode (E); and; And a return step (F) to return to the step (B) when the step (D) is not in the DMB, BLUETOOTH mode.

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