JP2011029747A - Portable terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device having a function of receiving broadcasting electric waves to view a broadcast program and a radio communication function of transmitting and receiving radio communication electric waves, wherein it is possible to save housing space for an antenna and secure the electric length of the antenna. <P>SOLUTION: The portable terminal device includes a first antenna 110, an electric length auxiliary part 120, and a broadcast reception circuit 130. The first antenna 110 receives broadcasting electric waves to be broadcast in a predetermined frequency band. The electric length auxiliary part 120 is connected to the first antenna 110 and increases the electric length of the first antenna 110. The broadcast reception circuit 130 receives an electric power supplied through the electric length auxiliary part 120. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mobile terminal device, and more particularly to a mobile terminal device having a function of receiving broadcast radio waves and viewing a broadcast program and a radio communication function of transmitting and receiving radio communication radio waves.

For portable terminal devices having a function of viewing a conventional broadcast program and a wireless communication function, the hinge part of the foldable casing or the upper surface of the lower casing of the slidable casing is used for multiband wireless communication. In many cases, the built-in antenna is provided with a pullable whip antenna for receiving broadcast radio waves on the hinge part or the side of the casing.
In such portable terminal devices that transmit and receive radio waves in different frequency bands such as radio communication radio waves and broadcast radio waves, broadcasting due to interference between the radio radio waves of each other and differences in reception sensitivity due to disposing different antennas in the same housing There has been a problem in that it may not be possible to secure sufficient reception sensitivity of broadcast radio waves to satisfactorily view the program.

  With respect to the above problems, an antenna configuration (Patent Document 1) that improves the resistance to standing waves and fading and widens the reception band by configuring two antennas of different shapes on the same substrate. A configuration (Patent Document 2) of a housing built-in antenna having radiation directivity that avoids the direction of the user when the upper and lower housings of the folding portable wireless communication device are opened has been proposed. In addition, a mobile communication device (Patent Document 3) having an antenna configuration for receiving two radio signals in different frequency bands without interference has been proposed.

JP 2004-112744 A JP-A-2005-217917 Special table 2009-509445 gazette

  However, whip antennas with sufficient electrical length to obtain good broadcast radio wave reception characteristics in accordance with recent changes in the housing structure that emphasizes design such as drastic downsizing and thinning of mobile terminal devices However, the conventional techniques disclosed in Patent Documents 1 to 3 have a problem that it is impossible to provide an antenna that secures the design of the mobile terminal device and obtains good reception characteristics of broadcast radio waves.

For example, the techniques of Patent Documents 1 and 2 have an antenna configuration for improving the transmission / reception characteristics of one desired radio wave, and the technique of Patent Document 3 receives two radio signals in different frequency bands. In addition, the configuration of a mobile communication device having an antenna assembly that reduces the influence between these radio signals improves the reception characteristics of a desired radio wave. Both technologies save the space for storing antennas. It is not intended to improve the reception sensitivity of broadcast radio waves while achieving both space saving and securing the electrical length of the antenna.
In order to solve the above-mentioned problems, the present invention provides a portable terminal device having a function of receiving broadcast radio waves and viewing a broadcast program and a radio communication function of transmitting and receiving radio communication radio waves, and saving an antenna storage space. It is characterized by providing a portable terminal device that achieves both space saving and securing the electrical length of an antenna.

  In order to achieve the above object, the present invention provides a first antenna unit for receiving broadcast radio waves broadcast in a predetermined frequency band, and the first antenna unit connected to the first antenna unit. An electrical length auxiliary unit that increases the electrical length of the unit, and a broadcast receiving circuit unit that is fed through the electrical length auxiliary unit.

According to the present invention, only the first antenna unit is good by connecting the first antenna unit and the electrical length auxiliary unit and feeding power to the broadcast receiving circuit unit via the electrical length auxiliary unit. Even when the reception sensitivity of the broadcast radio wave cannot be obtained, the electrical length of the first antenna unit and the electrical length auxiliary unit can be ensured.
Therefore, even when a space for housing an antenna having good broadcast radio wave reception characteristics cannot be secured in the housing, the reception sensitivity of the broadcast radio wave can be improved by the first antenna part and the electrical length auxiliary part. It is possible to listen to various broadcast programs.

It is a block diagram which shows the structure of the portable terminal device concerning the 1st Embodiment of this invention. It is a block diagram which shows the structure of the portable terminal device concerning the 2nd Embodiment of this invention (at the time of a whip antenna accommodation). It is a block diagram which shows the structure of the portable terminal device concerning the 2nd Embodiment of this invention (at the time of a whip antenna expansion | extension). It is a block diagram which shows the structure of the portable terminal device concerning the 3rd Embodiment of this invention. It is a figure which shows notionally an example of the electrical length auxiliary | assistant part 320 and the 2nd antenna part 311 in the portable terminal device concerning the 3rd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
The mobile terminal device according to the first embodiment of the present invention includes an antenna that receives broadcast radio waves, and has a viewing function that allows a broadcast program to be viewed from the broadcast radio waves received by the antenna. As shown in FIG. 1, the mobile terminal device 10 according to the present embodiment includes a first antenna unit 110, an electrical length auxiliary unit 120, and a broadcast receiving circuit unit 130.

The first antenna unit 110 is an antenna that receives broadcast radio waves broadcast in a predetermined frequency band.
The electrical length auxiliary unit 120 has an effect of increasing the electrical length of the first antenna unit 110 by being connected to the first antenna unit 110.

  The broadcast receiving circuit unit 130 has a function of enabling viewing of broadcast programs from broadcast radio waves received by the mobile terminal device 10. That is, when a broadcast radio wave is received by the mobile terminal device 10, the broadcast receiving circuit unit 130 converts the received broadcast radio wave into a broadcast signal (such as an audio or video signal) that enables viewing of the broadcast program, and can watch the broadcast program. Thus, the broadcast signal is output.

In FIG. 1, the first antenna unit 110 and the electrical length auxiliary unit 120 are connected, and the effective electrical length when receiving broadcast radio waves is equal to the electrical length of the first antenna unit 110. The electrical length is 120 plus the electrical length. The broadcast receiving circuit unit 130 is supplied with power via the electrical length auxiliary unit 120.
Therefore, the broadcast radio wave input to the broadcast receiving circuit unit 130, that is, the broadcast radio wave received by the mobile terminal device 10 is based on an effective electrical length that combines the first antenna unit 110 and the electrical length auxiliary unit 120. Obtained by the reception characteristics.

  As described above, according to the mobile terminal device 10 according to the present embodiment, the first antenna unit 110 and the electrical length auxiliary unit 120 are connected, and the broadcast receiving circuit unit 130 is connected via the electrical length auxiliary unit 120. By supplying power to the cable, it is possible to ensure the electrical length of the first antenna unit and the electrical length auxiliary unit even when the first antenna unit alone cannot obtain good broadcast radio wave reception sensitivity. The reception sensitivity of broadcast radio waves can be improved.

[Second Embodiment]
The portable terminal device according to the second embodiment of the present invention has a viewing function for receiving broadcast radio waves and enabling viewing of broadcast programs, and has a wireless communication function for transmitting and receiving radio communication radio waves.
In addition, about the component of the portable terminal device concerning this Embodiment, the same code | symbol is attached | subjected to what has the same structure and function as the component demonstrated in 1st Embodiment, and detailed description is Omitted.

As shown in FIG. 2, the mobile terminal device 20 according to the present embodiment includes a first antenna unit 110, an antenna unit 210, a broadcast receiving circuit unit 130, a wireless communication circuit unit 230, and a built-in power supply unit 240. ing.
Here, in the portable terminal device 20 according to the present embodiment, the expandable whip antenna is the first antenna unit 110.

  The antenna unit unit 210 includes an electrical length auxiliary unit 120, a second antenna unit 211, a connection unit 212, a broadcast radio wave power supply unit 213, and a wireless communication radio wave power supply unit 214, and includes a first antenna. The electrical length auxiliary unit 120 having an effect of increasing the electrical length of the unit 110 and the second antenna unit 211 that transmits and receives radio communication radio waves are integrated.

The second antenna unit 211 is an antenna that transmits and receives communication radio waves in a frequency band different from the broadcast radio wave received by the first antenna unit 110.
The connection unit 212 electrically connects the first antenna unit 110 and the electrical length auxiliary unit 120.
The broadcast radio wave power supply unit 213 connects the electrical length auxiliary unit 120 and the broadcast reception circuit unit 130, and supplies the received broadcast radio wave to the broadcast reception circuit unit 130.
The radio communication radio wave power supply unit 214 connects the second antenna unit 211 and the radio communication circuit unit 230 and supplies the received radio communication radio wave to the radio communication circuit unit 230.

The wireless communication circuit unit 230 realizes a wireless communication function by converting the radio wave received by the second antenna unit into communication data, and converting the communication data into a radio wave and transmitting it from the second antenna unit. .
The built-in power supply unit 240 is a built-in power supply of the mobile terminal device 20 and supplies power to the components of the mobile terminal device 20 such as the broadcast receiving circuit unit 130 and the wireless communication circuit unit 230.

  Here, FIG. 2 and FIG. 3 show the configuration of the mobile terminal device 20 according to the present embodiment. 2 and 3 indicate the inside of the casing of the mobile terminal device 20. As shown in FIG. 2, a whip antenna, which is a first antenna unit 110 for receiving broadcast radio waves, is housed inside the housing, and a state in which the whip antenna is pulled out is shown in FIG.

  As shown in FIG. 2 and FIG. 3, the electrical length auxiliary unit 120 in the antenna unit 210 of the mobile terminal device 20 according to the present embodiment is connected to the first antenna unit 110 via a connection unit 212 on one side. The other is connected to the broadcast receiver circuit unit 130 via the broadcast radio wave power supply unit 213. The second antenna unit 211 in the antenna unit 210 is connected to the wireless communication circuit unit 230 via the wireless communication radio wave power supply unit 214.

Therefore, when listening to a broadcast program, it is received by the first antenna unit 110 for receiving broadcast radio waves and the electrical length auxiliary unit 120 in the antenna unit 210 connected to the first antenna unit via the connection unit 212. A broadcast program can be auditioned by feeding the broadcast radio wave to the broadcast receiving circuit unit 130 from the broadcast radio wave power supply unit 213.
In addition, when performing wireless communication, the second antenna unit in the antenna unit 210 is connected to the wireless communication circuit unit 230 via the wireless communication radio wave power supply unit 214, so that wireless communication data can be transmitted and received.

  As described above, according to the mobile terminal device 20 according to the present embodiment, the electrical length auxiliary unit having an effect of increasing the electrical length of the first antenna unit that receives broadcast radio waves, and the antenna for transmitting and receiving radio communication radio waves By arranging the second antenna unit as an integrated antenna unit, it is not necessary to add the electrical length auxiliary unit as a new part, and the space inside the housing can be effectively used. It is possible to secure a wider storage space for the antenna portion.

  In addition, the second antenna portion, which is an antenna for transmitting and receiving radio communication radio waves, is arranged so as to avoid the vicinity of the metal portion in the housing or the ground area of the substrate in order to ensure transmission / reception characteristics. Therefore, by providing the electrical length auxiliary unit in the antenna unit integrated with the second antenna unit, the electrical length auxiliary unit is also disposed at a position where the reception characteristic of the broadcast radio wave is good, and the first antenna unit and the electrical unit are electrically connected. It is possible to further improve the electrical length by the long auxiliary section, and it is possible to audition a better broadcast program.

[Third Embodiment]
The portable terminal device according to the third embodiment of the present invention has a broadcast program viewing function and a wireless communication function, and has the effect of increasing the electrical length of the first antenna unit that receives broadcast radio waves. An electrical length auxiliary element having an antenna, a transmission / reception antenna for radio communication radio waves, a control circuit for realizing a trial listening function for a broadcast program, and a control circuit for realizing radio communication are configured on the same substrate.
In addition, about the component of the portable terminal device concerning this Embodiment, what has the same structure and function as the component demonstrated in 2nd Embodiment attaches | subjects the same code | symbol, and detailed description Omitted.

As shown in FIG. 4, the mobile terminal device 30 according to the present embodiment includes a first antenna unit 110, a main unit 300, and a built-in power supply unit 240.
The main unit 300 includes a connection unit 212, an electrical length auxiliary unit 320, a second antenna unit 311, a broadcast receiving circuit unit 130, and a wireless communication circuit unit 230. These components are arranged on one printed circuit board. It has an arranged configuration.

Both the electrical length auxiliary unit 320 and the second antenna unit 311 are formed by a conductive pattern having a meander shape on a printed circuit board which is the main unit 300.
Here, FIG. 5 shows an example of the electrical length auxiliary unit 320 and the second antenna unit 311 in the mobile terminal device 30 according to the present embodiment.

As shown in FIG. 5, the electrical length auxiliary part 320 formed by a conduction pattern having a meander shape in the main unit 300 is connected to the first antenna part 110 via a connection part 212 in the main unit 300. The other end is connected to the broadcast receiving circuit unit 130 disposed in the main unit 300.
The second antenna portion 311 is formed by a conduction pattern having a meander shape in the main unit 300 and is connected to the radio communication circuit portion 230 disposed in the main unit 300.

As described above, in the portable terminal device 30 according to the present embodiment, the electrical length auxiliary unit and the second antenna unit are arranged in a meander-shaped conduction pattern using the area on the printed circuit board that is the main unit. As a result, it is not necessary to add an antenna unit including the electrical length auxiliary unit and the second antenna unit as a single component, so that an increase in the number of components can be suppressed and an increase in cost can be prevented.
In addition, by making the electrical length auxiliary unit, the second antenna unit, the broadcast receiving circuit unit, and the wireless communication circuit unit integrated in the main unit, the space inside the casing of the mobile terminal device 30 can be effectively used. In addition, even in the portable terminal device 30 that is designed to be small and thin, it is possible to secure a wider storage space for the whip antenna, which is the first antenna unit. That is, it is possible to achieve both the design of the mobile terminal device and the reception characteristics of the broadcast program.

  The present invention can be used for antenna configurations of mobile phone terminal devices and mobile information terminal devices that have a broadcast program viewing function such as digital TV broadcasting and a wireless communication function that transmits and receives data such as video and audio.

  DESCRIPTION OF SYMBOLS 10, 20, 30 ... Portable terminal device, 110 ... 1st antenna part, 120, 320 ... Electrical length auxiliary | assistant part, 130 ... Broadcast receiving circuit part, 210 ... Antenna unit, 211, 311 ... 2nd antenna part, 212 Connection unit 213 Broadcast radio wave power supply unit 214 Radio communication radio wave power supply unit 230 Wireless communication circuit unit 240 Built-in power supply unit

Claims (5)

A first antenna unit for receiving broadcast radio waves broadcast in a predetermined frequency band;
An electrical length auxiliary unit connected to the first antenna unit and increasing the electrical length of the first antenna unit;
A portable terminal device comprising: a broadcast receiving circuit unit that is fed via the electrical length auxiliary unit. The mobile terminal device according to claim 1,
The mobile terminal apparatus, wherein the first antenna constitutes a whip antenna that can be housed inside a casing of the mobile terminal apparatus, and is electrically connected to the electrical length auxiliary unit. The mobile terminal device according to claim 1,
A second antenna unit that transmits and receives communication radio waves in a frequency band different from the broadcast radio wave;
A wireless communication circuit unit fed through the second antenna unit;
A portable terminal device comprising: an antenna unit unit in which the electrical length auxiliary unit and the second antenna unit are integrated. The mobile terminal device according to claim 3.
The mobile terminal apparatus, wherein the antenna unit is formed by a pattern on a printed circuit board. The mobile terminal device according to claim 4,
The antenna unit is configured by a meander-shaped pattern on a printed circuit board.

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