KR20070017514A - Portable telephone device - Google Patents

Abstract

The mobile phone apparatus has a display case 10 including display panels 10A and 10B, a television antenna unit 4, and an operation case including an operation unit 20 and a mobile phone antenna unit 5. (2) and the hinge part 3 which connects so that they may mutually rotate. The television antenna unit 4 is provided at an end portion opposite to the hinge portion 3 of the display case 1, and the antenna portion 5 for the cellular phone is at the hinge portion 3 side of the operation case 2. Since it is provided in the edge part, these antennas are always spaced apart by the length of the display case 1. In addition, a continuous ground electrode is formed in the display case 1 and the operation case 2, and one end of the television antenna unit 4 is connected to an end of the ground electrode, thereby providing a television. A ground electrode of the length along the antenna portion 4 is secured.

Mobile Phone Device, Display Panel, Control Panel, Television Antenna Unit, Display Case

Description

Mobile phone device {PORTABLE TELEPHONE DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile telephone apparatus capable of receiving digital television broadcasting, and a mobile telephone apparatus with a so-called television reception function.

A cellular phone device capable of receiving digital television broadcasts (hereinafter referred to simply as a cellular phone device with a television reception function) is a frequency band (470 MHz to 770 MHz) of a digital television broadcast signal and a frequency band (800 MHz band) of a mobile communication signal. Because of this difference, an antenna for receiving a digital television broadcast signal (hereinafter simply referred to as a "television reception antenna") and an antenna for transmitting and receiving a cellular phone communication signal (hereinafter simply referred to as a "mobile phone antenna") are individually. Equipped with. Since the digital television broadcast signal has a wide frequency band, in order to receive the signal of this frequency band with high efficiency, a plurality of antenna lengths must be realized, and various configurations have been devised to realize this (for example, , Patent Document 1, Patent Document 2.).

In the antenna described in Patent Document 1, the antenna core is formed of a plurality of antenna cores having different permeability, and the portions to be used for each target frequency band are different. In addition, the apparatus described in Patent Literature 2 uses a rod antenna protruding from the case to the outside and a passive element disposed inside the case, and selects whether or not to use the passive element or sets the characteristic value of the passive element. By changing, the reception frequency band of high gain is changed.

Patent Document 1: Japanese Patent Publication No. 2003-142928

Patent Document 2: Japanese Patent Application Laid-Open No. 2001-339329

However, with the recent miniaturization of portable telephone apparatuses, in the portable telephone apparatus with a television reception function as described above, the distance between the installation position of the television reception antenna and the installation position of the cellular telephone antenna tends to be shortened. For this reason, there is a possibility that these antennas interfere with each other and cause interference in reception of digital television broadcast signals and transmission and reception of mobile phone communication signals. The digital television broadcast signal has a higher frequency band than the analog television broadcast signal, but the lowest frequency (about 470 MHz) is about 1/2 of the frequency (about 800 MHz) of the cellular phone communication signal. For this reason, in order to receive a digital television broadcast signal with high efficiency, the length of the ground which contributes to the antenna length is required about twice, and it is difficult to form such a ground electrode in a miniaturized portable telephone apparatus.

Accordingly, an object of the present invention is to provide a mobile phone apparatus which can suppress mutual interference between a television antenna and a mobile phone antenna and can receive digital television broadcast signals with high efficiency.

The present invention provides a foldable cellular phone having a first case with display means, a second case with operation means, and a hinge for rotatably connecting the first case and the second case. An apparatus comprising: a first antenna for receiving a television broadcast signal provided at an end opposite to a hinge side of a first case, a second antenna for transmitting and receiving a mobile phone communication signal provided at a second case, and a first antenna A ground electrode is formed continuously from an end portion of the first antenna side to an end portion opposite to the hinge side of the second case.

More specifically, the cellular phone apparatus of the present invention uses a signal of the first frequency band as a television broadcast signal, a signal of the second frequency band as a cellular phone communication signal, and transmits and receives a cellular phone communication signal through a second antenna. It is characterized by.

In this configuration, when the television broadcast is received, the cellular phone device is opened, so that the first antenna for receiving the television broadcast signal and the second antenna for transmitting and receiving the cellular phone communication signal are separated by at least the length of the first case. . This suppresses mutual interference between the first antenna and the second antenna. Further, since the ground electrode is formed from the first antenna side end portion of the first case to the end portion opposite to the hinge side of the second case, i.e., almost the entire length of the mobile telephone apparatus, the wavelength is higher than that of the mobile telephone communication signal. For the first antenna which receives the long television broadcast signal, a ground electrode of sufficient length is secured, and the television broadcast signal is also received from the ground electrode.

In addition, the present invention provides a linear conductor antenna which projects the first antenna outwardly from an end portion of the first antenna side of the first case, and a chip disposed in the first case and conducting to the linear conductor antenna. It is characterized by including the antenna.

In this configuration, since the first antenna includes the linear conductor antenna and the chip antenna, the antenna performance is improved because the television broadcast signals are received by these plural kinds of antennas. In addition, since the antenna length required by these antennas may be secured, the length of the linear conductor antenna is shortened by using a chip antenna.

Moreover, the present invention is characterized in that the linear conductor antenna is rotatably provided in the first case.

In this configuration, when the linear conductor antenna is rotated, when receiving a television broadcast signal, the linear conductor antenna is straight in the vertical direction from the mounting end face (upper surface of the mobile telephone apparatus) of the first case to the outside. When the conductor antenna is rotated and the television broadcast signal is not received, the installation cross section of the linear conductor antenna of the first case or the cross section of the first conductor of the linear conductor antenna of the first case (upper surface of the mobile telephone apparatus). ), The linear conductor antenna is rotated in the vertical direction. Thus, when in use, the linear conductor antenna functions effectively as part of the television broadcast signal receiving antenna, and when not in use, the linear conductor antenna does not come out than the external appearance of the cellular phone device. It is kept compact.

The present invention is also characterized in that the first antenna is configured to include a plate-shaped conductor antenna disposed in the first case and a chip antenna that is connected to the plate-shaped conductor antenna.

In this configuration, since the entire first antenna is provided in the first case, the mobile telephone apparatus becomes small. In addition, since the plate-shaped conductor antenna and the chip antenna are used as the first antenna, the television broadcast signal is received more efficiently than using only the chip antenna.

The present invention is also characterized in that the plate-shaped conductor antenna is attached to the inner surface of the first case and formed.

In this configuration, since the plate-shaped conductor antenna is formed by being attached to the inner surface of the first case, it is not necessary to form the mounting area of the plate-shaped conductor antenna in the form of a mounting board inside the first case. By mounting the chip antenna, the antenna forming area in the first case is prevented from being widened.

The present invention is also characterized in that the first antenna is provided with antenna length selecting means for selectively varying the effective antenna length.

In this configuration, since the antenna length of the first antenna is variable, a plurality of resonance frequencies can be set for a television broadcast signal of a wide frequency band. For this reason, the resonance frequency can be changed in accordance with the frequency of the received television broadcast signal.

In addition, the present invention is characterized in that the first antenna is detachably attached to the first case.

In this configuration, since the first antenna needs to be mounted only when the television broadcast signal is received, mutual interference does not occur when the cellular phone communication signal is transmitted and received.

Moreover, this invention is equipped with the 2nd antenna at the hinge side edge part of the 2nd case, It is characterized by the above-mentioned.

In this configuration, since the second antenna is provided at the hinge side end of the second case, the distance from the first antenna becomes the length of the first case even when the cellular phone device is opened or closed, so that mutual interference between these antennas Suppressed.

The present invention is also characterized in that the second antenna is provided at an end portion on the side opposite to the hinge side of the second case.

In this configuration, since the distance between the first antenna and the second antenna becomes the entire length of the mobile telephone apparatus with the portable telephone apparatus open, mutual interference between these antennas is further suppressed.

The present invention also provides a chip antenna for supplying power to a base formed of at least one of a dielectric material or a magnetic material, a power supply conductor formed on at least one of the inside or surface of the base, and the power supply conductor. It is characterized by including the power supply terminal.

In this configuration, the chip antenna can be made compact and can be mounted in a mounting board shape in the first case as compared with the linear conductor antenna and the plate conductor antenna, so that the transmission and reception characteristics are deteriorated. The size of the first antenna can be reduced.

In addition, the present invention is characterized in that the antenna length selection means comprises a switching element connected between one end of the chip antenna and the signal output unit, and a passive element connected between the other end of the chip antenna and the signal output unit. have.

In this configuration, since the antenna length is changed only by the switching element, the chip antenna, and the passive element, the antenna length is changed by an easy structure and easy control.

The present invention is also characterized in that the passive element is an inductor or a capacitor.

In this configuration, since the passive element is composed of simple elements such as an inductor and a capacitor, the portable telephone apparatus having the above-described characteristics is configured with a simpler structure.

Effect of the Invention

According to the present invention, a first antenna for receiving a television broadcast signal having a lower frequency band than a cellular phone communication signal and a second antenna for transmitting / receiving a cellular phone communication signal are separated by at least the length of the first case, so that the first antenna is separated from the first antenna. Mutual interference with the second antenna can be suppressed. As a result, the reception characteristics of the television broadcast signal can be improved by the first antenna.

Further, since the ground electrode is formed from the first antenna side end portion of the first case to the end portion opposite to the hinge side of the second case, a ground electrode having a sufficient length can be ensured for the first antenna. As a result, the television broadcast signal can also be received from the ground electrode, and the reception characteristics of the television broadcast signal can be further improved.

In addition, according to the present invention, the first antenna for receiving a television broadcast signal consists of a linear conductor antenna protruding outward from the first case and a chip antenna provided in the first case, thereby using only the linear conductor antenna. The reception characteristic can be improved more than in the case. In addition, the length of the linear conductor antenna is shortened by the chip antenna with respect to the required antenna length, so that the entire length of the mobile telephone apparatus at the time of receiving the television broadcast signal can be shortened.

Further, according to the present invention, when the linear conductor antenna is rotated, the linear conductor antenna can be projected outward from the first case when in use, and when not in use, the linear conductor antenna can be enclosed within the outer dimensions of the first case. The appearance of the mobile telephone device when not in use can be miniaturized while maintaining the characteristics.

Further, according to the present invention, by using the plate-shaped conductor antenna instead of the linear conductor antenna, all the first antennas for receiving the television broadcast signal are installed in the first case, so that the portable telephone apparatus can be miniaturized. .

In addition, according to the present invention, by attaching and forming a plate-shaped conductor antenna on the inner surface of the first case, it is possible to secure an area for mounting mounting components such as a chip antenna on the mounting substrate, and save space inside the first case. Can be mad. As a result, the mobile telephone apparatus can be further miniaturized.

Further, according to the present invention, the resonance frequency of the antenna can be changed in accordance with the frequency of the television broadcast signal to be received, so that the television broadcast signal can be efficiently received over the entire television broadcast signal of a wide frequency band.

Further, according to the present invention, since the first antenna for receiving a television broadcast signal is detachable, it is only necessary to mount this antenna when necessary, and mutual interference does not occur when transmitting and receiving mobile phone communication signals, thereby providing a mobile phone communication signal. It can transmit and receive efficiently.

Further, according to the present invention, since the distance from the first antenna becomes the length of the first case even when the cellular phone device is opened or closed, mutual interference between these antennas is suppressed, so that mobile phone communication is possible even during a call. The signal can be transmitted and received efficiently.

Further, according to the present invention, with the cellular phone device open, the distance between the first antenna and the second antenna is equal to the entire length of the cellular phone device, and mutual interference between these antennas is further suppressed, thereby receiving television broadcast signals and It is possible to transmit and receive each signal more efficiently when transmitting and receiving mobile phone communication signals.

1 is an external view of a mobile telephone apparatus according to the first embodiment.

FIG. 2 is a diagram showing the configuration of the television antenna unit 4 of the mobile telephone apparatus according to the first embodiment.

FIG. 3 is a circuit diagram showing when the DC control voltage is applied and when the DC control voltage is not applied in the television antenna unit 4.

4 is a graph showing the VSWR characteristic and the gain characteristic when the diode D48 of the cellular phone device according to the first embodiment is in an OFF state, and a Smith chart in this state.

Fig. 5 is a diagram showing the directivity of the radiated electric field strength when the diode D48 of the cellular phone device according to the first embodiment is in the OFF state.

6 is a graph showing the VSWR characteristic and the gain characteristic when the diode D48 of the cellular phone device according to the first embodiment is in an ON state, and a Smith chart in this state.

FIG. 7 is a diagram showing the directivity of the radiated field intensity when the diode D48 of the cellular phone device according to the first embodiment is in the ON state.

8 is an external view of a mobile telephone apparatus according to the second embodiment.

9 is an external view of a mobile telephone apparatus according to the third embodiment.

Fig. 10 is an external view of a mobile telephone apparatus according to the fourth embodiment.

11 is a circuit diagram of a television antenna unit 4 of the portable telephone apparatus according to the fourth embodiment.

12 is an external view of a mobile telephone apparatus according to the fifth embodiment.

Fig. 13 is an exploded configuration diagram of the cellular phone device according to the fifth embodiment.

<Description of the code>

1: display case 10 A: main display panel

10B: sub display panel 101: substrate

111: ground electrode 2: operation case of substrate 101

20: operation unit 102: substrate

112: ground electrode 3: hinge portion of substrate 102

113: flat cable 4: antenna unit for television

5: antenna unit for mobile phone 6: antenna member for television

ANT41: rod antenna ANT42, ANT43, ANT52: chip antenna

ANT51: plate antenna

A mobile telephone apparatus with a television function according to a first embodiment of the present invention will be described with reference to Figs.

BRIEF DESCRIPTION OF THE DRAWINGS The external view of the mobile telephone apparatus which concerns on this embodiment, (A) is a front view in the open state, (B) is a side view in the open state, (C) is the front view of the board | substrate in a case in the open state. (D) is a front view in a closed state.

As shown in FIG. 1, the mobile telephone apparatus with a television function of this embodiment is provided with the main display panel 10A in one main surface, and the display case provided with the sub display panel 10B in the opposing main surface. (1), the operation case 2 provided with the operation part 20 which consists of several buttons etc. in one main surface, and the hinge part 3 which connects so that they may mutually rotate. The display case 1 and the operation case 2 are arranged so that the surface on the main display panel 10A side and the surface on the operation unit 20 face each other, and the cellular phone device is closed (Fig. 1 (D). These surfaces are opposed to each other in ()) and are rotatably fixed so that their surfaces face in substantially the same direction in the open state (Fig. 1 (A)).

In the display case 1, together with the main display panel 10A and the sub display panel 10B, a panel control circuit (not shown) for controlling these display panels or a main control circuit for controlling the entire cellular phone device is performed. The board | substrate 101 by which the board | substrate (not shown) etc. were mounted is built-in, The television antenna part 4 which consists of predetermined effective antenna length in the edge part which opposes the hinge 3 side of this board | substrate 101. Is formed. As described later, the television antenna unit 4 functions as an antenna of two antenna lengths substantially by a DC control voltage, and each antenna length has two desired heights within the frequency band of the television broadcast signal. It is configured to be almost 1/4 wavelength of frequency. The substrate 101 has a predetermined pattern of ground electrodes 111 extending from the longitudinal direction of the substrate 101, that is, from the end on which the television antenna unit 4 is mounted, to the end on the hinge 3 side. It is formed.

In the operation case 2, together with the operation part 20, the board | substrate 102 in which the operation control circuit which controls this operation part 20, and a power supply circuit (all are not shown) is mounted, is built in this board | substrate ( The antenna part 5 for a cellular phone is formed in the edge part on the side of the hinge 3 of 102. As shown in FIG. The cellular phone antenna section 5 is formed such that the effective antenna length is approximately 1/4 wavelength of the frequency of the cellular phone communication signal. In addition, the substrate 102 has a ground electrode continuous from the longitudinal direction of the substrate 102, that is, from an end portion on the side of the hinge portion 3 on which the cellular phone antenna portion 5 is mounted, to an end portion opposite to the substrate 102. 112 is formed in a predetermined pattern.

The hinge portion 3 has a flat cable for electrically connecting a circuit electrode on the substrate 101 embedded in the display case 1 and a circuit electrode on the substrate 102 embedded in the operation case 2 ( 103 is built-in, and conducts the control circuits mounted on the substrate 101 and the control circuits mounted on the substrate 102, and the round electrode 111 and the substrate ( The ground electrode 112 of 102 is turned on.

Here, the display case 1 corresponds to the "first case" of the present invention, the operation case 2 corresponds to the "second case" of the present invention, and the television antenna section 4 is viewed. Corresponds to the "first antenna" of the invention, and the cellular phone antenna portion 5 corresponds to the "second antenna" of the present invention.

In such a mobile telephone apparatus with a television function, when the main body is opened, that is, the display case 1 is rotated to expose the operation surface, and the operation unit 20 operates the mobile telephone function, the display according to this is displayed as the main display. In addition to being displayed on the panel 10A, the cellular phone communication signal is transmitted and received through the cellular phone antenna unit 5. On the other hand, when the main body is opened and the television function is operated by the operation unit 20, the television antenna unit 4 receives the television broadcast signal, thereby reproducing the television broadcast received on the main display panel 10A. The image is displayed.

Here, since the television antenna unit 4 and the cellular phone antenna unit 5 are separated by the length of the display case 1 as described above, the interference between them is suppressed. As a result, the television broadcast signal can be efficiently received at the time of receiving the television broadcast signal, and the mobile phone communication signal can be transmitted and received efficiently at the time of transmitting and receiving the mobile phone communication signal. In addition, since the ground electrode is formed from the display case 1 to the operation case 2 and over almost the entire length of the cellular phone device, the length of the ground electrode with respect to the television antenna unit 4 is sufficiently increased. The television broadcast signal can be efficiently received from the ground electrode, and the television broadcast signal can be received more efficiently as a whole. In addition, even when the main body is closed, the distance between the two antennas is separated by the length of the display case 1, so that these antennas do not interfere with each other even when the mobile phone is in standby, and thus the call signal of the mobile phone can be efficiently I can receive it well.

Next, the specific structure of the television antenna part 4 is demonstrated with reference to FIG. 2, FIG.

2 is a diagram showing the configuration of the television antenna unit 4, (A) is a plan view showing the configuration of the television antenna unit 4, and (B) is a circuit diagram of the television antenna unit 4.

Fig. 3 shows a circuit in which the DC control voltage is applied and the DC control voltage is not applied in the television antenna unit 4, where (A) is the DC control voltage and (B) is the DC control voltage. Indicates.

As shown in FIG. 2A, the television antenna unit 4 is mounted on one corner of an end portion opposite to the hinge portion 3 of the substrate 101. A rod antenna ANT41 extending in a direction opposite to the branch portion 3, chip antennas ANT42 and ANT43 mounted along a cross section facing the hinge portion 3 of the substrate 101, and these rod antennas ( ANT41 and chip resistors R44 mounted near chip antennas ANT42 and ANT43, chip capacitors C45 and C46, chip coils L47, and chip diodes D48. These elements and circuit patterns 40, it is comprised in the circuit corresponding to the circuit shown in FIG.2 (B). Here, the rod antenna ANT41 corresponds to the "linear conductor antenna" of the present invention.

The rod antenna ANT41 is connected to one end of the chip antenna ANT42, and the other end of the chip antenna ANT42 is connected to one end of the chip antenna ANT43. The other end of the chip antenna ANT43 is connected to the feed point 50, that is, the output terminal of the television broadcast signal, through the chip capacitor C45. In addition, one end of the chip antenna ANT43 (connection point with the chip antenna ANT42) is connected to the feed point 50 through the chip diode D48, and the DC application terminal 51 through the chip resistor R44. ). The feed point 50 is connected to the ground electrode 111 via the chip coil L47, and the DC application terminal 51 is connected to the ground electrode 111 through the chip capacitor C46. Here, the chip antennas ANT42, ANT43 are formed by a chip-shaped helical antenna. The chip-shaped helical antenna has an almost rectangular parallelepiped shape, and is formed on a base made of at least one of a dielectric material and a magnetic material, a helical conductor formed on or in the surface of the base, and a surface of the base. It is comprised by the electrode terminal which electrically connects to a conductor.

In the television antenna unit 4 having such a configuration, as shown in FIG. 3, the DC control voltage is applied to the DC applying terminal 51 and the other characteristics are not applied when the DC control voltage is not applied.

When the DC control voltage is applied, the chip diode D48 is short-circuited and the series circuit between the load antenna ANT41 and the chip antenna ANT42 is connected to the feed point 50. In other words, the circuit composed of the chip antenna ANT43 and the chip capacitor C45 does not function, and only a portion consisting of the load antenna ANT41 and the chip antenna ANT42 functions as a television antenna. That is, the antenna length is set to a portion consisting of the rod antenna ANT41 and the chip antenna ANT42. On the other hand, when the DC control voltage is not applied, the chip diode D48 is opened, so that a series circuit of the load antenna ANT41, the chip antenna ANT42, and the chip antenna ANT43 is connected to the chip capacitor C45. It becomes a structure connected to the feed point 50 through it. That is, as a television antenna, the part which consists of the rod antenna ANT41, the chip antenna ANT42, and the chip antenna ANT43 functions. That is, the antenna length is set to a portion consisting of the load antenna ANT41 and the chip antennas ANT42 and ANT43. As a result, by applying the DC control voltage, the antenna length is shorter by the amount of the chip antenna ANT43 than in the state where the DC control voltage is not applied, and an antenna having two resonance frequencies can be configured. The resonant frequency in the state where the DC control voltage is not applied and the resonant frequency in the state where the DC control voltage is applied are set to the low frequency region and the high frequency region within the frequency band of the television broadcast signal, thereby providing a wide frequency band. A television broadcast signal can be received. The circuit consisting of the DC applying terminal 51, the chip resistor R44, the chip diode D48, the chip coil L47, the chip antennas ANT42 and ANT43, and the chip capacitors C45 and C46 is described herein. Antenna length selection means.

Next, the specific experimental result of the radiation characteristic (corresponding to reception characteristic) of the frequency band of the television broadcast signal of the mobile telephone apparatus with a television function of the structure of this embodiment is demonstrated. Fig. 4A is a graph showing the VSWR and gain characteristics of the television antenna unit 4 when the diode D48 is in the OFF state, that is, when the antenna length is long, and Fig. 4B is in this state. Smith chart.

Fig. 5 shows the directivity of the radiated field intensity when the diode D48 is in the OFF state, and shows the planar orientation, the directivity at 470 MHz and the directivity at 570 MHz for the mobile telephone apparatus. In addition, Table 1 shows the maximum value and the average value of the gain for each of the six reference directions of the mobile telephone device, and also shows the radiation efficiency calculated from them.

6A is a graph showing the VSWR characteristic and the gain characteristic of the television antenna unit 4 when the diode D48 is in an ON state, that is, when the antenna length is short, and FIG. Smith chart in the state.

Fig. 7 shows the directivity of the radiated field intensity when the diode D48 is in the ON state, showing the planar orientation for the cellular phone device, the directivity at 670 MHz and the directivity at 770 MHz. In addition, Table 2 shows the maximum and average values of gains for each of the six reference directions of the mobile telephone apparatus, and also shows the radiation efficiency calculated from them.

Table 3 summarizes these results, and shows the VSWR characteristic (VSWR Value), peak gain [dBd], and radiation when the configuration of the television antenna unit 4 of the present embodiment is used. Efficiency [dB] is measured at 470MHz, 570MHz, 670MHz, and 770MHz.

Thus, by using the structure of the mobile telephone apparatus of this embodiment, from 470 MHz to 770 MHz, the VSWR is about 3.0, the peak gain is about -3.0 [dBd], and the radiation efficiency is about -5.0 [dB] or more. As a result, very good spinning characteristics can be obtained. That is, a portable telephone apparatus with a television function capable of receiving a television broadcast signal with high efficiency over the entire frequency band of the television broadcast signal can be realized.

As described above, since the television antenna unit and the cellular phone antenna are reliably separated at predetermined intervals by using the configuration of the present embodiment, mutual interference between the antenna for receiving the television broadcast signal and the antenna for transmitting / receiving the cellular phone communication signal is prevented. It is possible to realize a mobile telephone apparatus with a television function which suppresses and transmits and receives these signals with high efficiency.

Further, since the ground electrode formed over the entire length of the portable telephone apparatus is connected to the television antenna unit, the portable telephone apparatus with a television function for receiving a television broadcast signal with higher efficiency can be realized.

In addition, since the effective antenna length of the television antenna unit can be changed, it is possible to realize a portable telephone apparatus with a television function that provides good reception characteristics over the entire band even for a television broadcast signal having a wide use frequency band.

Next, a mobile telephone apparatus with a television function according to the second embodiment will be described with reference to FIG. 8.

Fig. 8 is an external view of the mobile telephone apparatus according to the present embodiment, wherein (A) is a front view in the open state, (B) is a side view in the open state, and (C) is a front view of the substrate in the case in the open state. (D) is a front view in a closed state.

In the cellular phone device shown in FIG. 8, the antenna part 5 for cellular phone is formed in the edge part which opposes the hinge part 3 side of the operation case 2, The other structure is the cellular phone device shown in FIG. Is the same as

With such a configuration, with the main body open, the television antenna unit 4 and the cellular phone antenna unit 5 have the length of the display case 1 and the operation case 2, that is, the mobile telephone apparatus. Since they are separated by the length, they are spaced more between these antennas than the portable telephone apparatus shown in 1st Embodiment. For this reason, mutual interference between these antennas is further suppressed, and a television broadcast signal can be received more efficiently, and a mobile phone communication signal can be transmitted and received more efficiently. On the other hand, in this embodiment, although the antenna part for television 4 and the cellular phone antenna part 5 are close in the state which closed the main body, since the power supply is not supplied to the television antenna part 4 in the state which closed the main body. These antennas do not interfere with each other.

Next, a mobile telephone apparatus with a television function according to the third embodiment will be described with reference to FIG.

9 is an external view of the mobile telephone apparatus according to the present embodiment, (A) is a front view in the open state, (B) is a side view in the open state, and (C), (D) is a front view in the closed state. to be.

The mobile telephone apparatus shown in FIG. 9 is provided with a rod antenna ANT41 of the television antenna unit 4 rotatably with respect to the display case 1, and the other configuration is the same as that of the mobile telephone apparatus shown in FIG. .

In this configuration, since the rod antenna ANT41 is rotatably provided with respect to the display case 1, the rod antenna ANT41 is hinged from the display case 1 when the television broadcast signal is received. When projecting in a direction opposite to the direction of receiving the television broadcast signal, as shown in Figs. 9C and 9D, the load antenna ANT41 is placed along the cross section of the display case 1 for display. It can arrange | position within the external dimension of (1). Thereby, when using, the television antenna part 4 which can receive a television broadcast signal efficiently is comprised, and when not in use, the mobile telephone apparatus with a television function which keeps the external dimension small can be comprised. Can be.

Next, the mobile telephone apparatus with a television function according to the fourth embodiment will be described with reference to FIGS. 10 and 11.

Fig. 10 is an external view of the mobile telephone apparatus according to the present embodiment, wherein (A) is a front view in the open state, (B) is a side view in the open state, and (C) is a front view of the substrate in the case in the open state. (D) is a front view in a closed state.

11 is a circuit diagram of the television antenna unit 4 of the present embodiment.

The configuration of the television antenna unit 4 is changed in the mobile telephone apparatus shown in FIG. 10, and the other configuration is the same as the mobile telephone apparatus shown in FIG.

Specifically, instead of the rod antenna ANT41 of the television antenna unit 4, a plate-shaped antenna ANT51 attached to the inner surface of the display case 1 is disposed, and the plate-shaped antenna ANT51 is disposed. One end of is connected to one end of the chip antenna ANT42. In addition, a series circuit of the chip antenna ANT52 and the chip capacitor C54 and a parallel circuit of the chip diode D56 are connected between the chip capacitor C45 and the feed point 50 connected to the chip antenna ANT43. The connection point between the parallel circuit and the chip capacitor C45 is connected to the second DC application terminal 52 connected to the ground electrode 111 by the chip capacitor C55 via the chip resistor R53. have. By controlling the combination of the DC control voltages applied to the two DC applying terminals 51 and 52, three different antenna lengths can be realized. Specifically, the mode with the shortest antenna length in which only the plate-shaped antenna ANT51 and the chip antenna ANT42 function as an antenna, and the intermediate length in which the plate-shaped antenna ANT51 and the chip antennas ANT42 and ANT43 function as antennas. The mode consisting of the antenna length and the plate antenna ANT51 and the chip antennas ANT42, ANT43, and ANT52 can be selectively set to the mode consisting of the longest antenna length which functions as an antenna.

In this way, by replacing the rod antenna with a plate-shaped antenna formed in the display case, since the television antenna unit 4 does not protrude from the case at all, the appearance of the mobile telephone apparatus can be reduced even when receiving a television broadcast signal. At this time, in the plate-shaped antenna, the radiation characteristics deteriorate in comparison with the rod antenna protruding to the outside. However, the setting of the antenna length is subdivided as described above, whereby the impedance matching of the antenna can be finely set and the aforementioned degradation can be suppressed. have. At this time, since the plate-shaped antenna ANT51 is attached to the inner surface of the display case 1, the chip antennas ANT42, ANT43, and ANT52 can be mounted on the surface of the substrate 101 opposite thereto. As a result, a portable telephone apparatus for receiving television broadcast signals with high efficiency can be formed compact.

Next, a mobile telephone apparatus with a television function according to the fifth embodiment will be described with reference to FIG.

12 is an external view of the mobile telephone apparatus according to the present embodiment, (A) is a front view in the open state, and (B) is a side view in the open state.

FIG. 13A is an exploded view of the mobile telephone apparatus according to the present embodiment, and FIG. 13B is a plan view of the television antenna member 6 of the apparatus.

The mobile telephone apparatus with a television function shown in FIG. 12, FIG. 13 is replaced with the television antenna member 6 which the television antenna part 4 shown in 1st Embodiment is removable, and another structure is FIG. It is the same as the cellular phone apparatus with the television function shown in FIG.

The television antenna member 6 includes a rod antenna ANT61, chip antennas ANT62 and ANT63, and a tuner circuit 64 mounted on a substrate 60. The rod antenna 61 is loaded in FIG. A circuit having the same configuration as that of the antenna circuit shown in FIG. 2 is formed, which corresponds to the antenna ANT41 and the chip antennas ANT62 and ANT63 respectively correspond to the chip antennas ANT42 and ANT43 in FIG. The feed point of this circuit forms a structure in which the tuner circuit 64 is connected.

Even in such a configuration, the same effects as those in the first embodiment can be achieved, and the antenna element 6 for television only needs to be mounted at the time of television broadcast reception. Becomes As a result, mutual interference does not occur, and the mobile phone communication signal can be transmitted and received more efficiently.

On the other hand, in each of the above-described embodiments, an example is shown in which a television broadcast signal is used as a signal of a first frequency band and a cellular phone communication signal is used as a signal of a second frequency band of a higher frequency than the first frequency band. However, if the frequencies of the two signals received by the device are different, the above-described configuration can be applied and the above-described effect can be achieved.

Claims (13)

A first case having display means, A second case having an operation means, In the foldable cellular phone device provided with a hinge for rotatably connecting the first case and the second case, A first antenna for receiving a signal of a first frequency band provided at an end of the first case opposite to the hinge side; A second antenna provided in the second case for transmitting and receiving a signal of a second frequency band having a frequency higher than that of the first frequency band; And a ground electrode formed continuously from an end portion of the first case to an end portion opposite to the hinge side of the second case. 2. The portable apparatus according to claim 1, wherein the signal of the first frequency band is a television broadcast signal, the signal of the second frequency band is a mobile phone communication signal, and the second antenna performs transmission and reception of the mobile phone communication signal. Telephone device. The linear conductor antenna of claim 1 or 2, wherein the first antenna protrudes outward from an end portion of the first antenna side of the first case and is disposed in the first case. A mobile phone device comprising a chip antenna which is connected to an antenna. The mobile telephone apparatus according to claim 3, wherein the linear conductor antenna is rotatably installed at an attachment portion to the first case. The mobile phone apparatus according to claim 1 or 2, wherein the first antenna comprises a plate-shaped conductor antenna disposed in the first case and a chip antenna for conducting the plate-shaped conductor antenna. . The mobile telephone apparatus according to claim 5, wherein the plate-shaped conductor antenna is attached to an inner surface of the first case. The mobile phone apparatus according to any one of claims 1 to 6, wherein the first antenna is provided with antenna length selecting means for selectively varying an effective antenna length. The mobile phone apparatus according to any one of claims 1 to 7, wherein the first antenna is provided in a detachable manner with respect to the first case. The mobile phone apparatus according to any one of claims 1 to 8, wherein the second antenna is provided at the hinge side end portion of the second case. The mobile telephone apparatus according to any one of claims 1 to 8, wherein the second antenna is provided at an end portion of the second case opposite to the hinge side of the second case. The chip antenna according to claim 3 or 5, wherein the chip antenna includes a base formed of at least one of a dielectric material and a magnetic material, a power supply conductor formed in at least one of the inside or the surface of the base, and the power supply. And a power supply terminal for supplying power to the conductor. 8. The antenna of claim 7, wherein the antenna length selecting means includes a switching element connected between one end of the chip antenna and a signal output unit, and a passive element connected between the other end of the chip antenna and the signal output unit. Characterized in a mobile phone device. The mobile phone apparatus according to claim 12, wherein said passive element is an inductor or a capacitor.

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