JP2006333387A - Sliding mobile radio terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding mobile radio terminal, capable of reducing the electric currents flowing in a flexible cable and improving the radiation characteristics of an antenna. <P>SOLUTION: A conductive sliding part 23 is fixed mechanically with respect to the terminal, while being fixed to a KEY case 1, and engages with a rail groove 21 formed in an LCD case 11, and freely slidingly combines the KEY case 1 and the LCD case 11. The sliding part 23 electrically connects a conductor line 22, laid in the rail groove 21 and the ground of the KEY substrate 7, when the KEY case 1 and LCD case 11 are slid and opened. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sliding portable wireless terminal such as a cellular phone in which a KEY casing in which an operation unit is arranged and an LCD casing in which a display unit is arranged are slidably coupled.

In a sliding portable wireless terminal such as a mobile phone in which a KEY housing in which an operation unit is disposed and an LCD housing in which a display unit is disposed are slidably coupled, a current serving as a radiation source is generated by the KEY housing. It flows through a flexible cable that connects the body and the LCD housing.
Further, in the slide type mobile phone, in order to reduce the thickness, it is necessary to reduce the distance between the board built in the KEY casing and the board built in the LCD casing.
For this reason, the space | interval between a flexible cable and both board | substrates becomes very narrow (generally 1 mm or less order), and a big electric current will flow into a flexible cable.

Thereby, the slide-type mobile phone has a very complicated current distribution, and radiation is suppressed.
Also, if a lossy medium exists between the flexible cable and both substrates, a large current flows through the flexible cable, so that power is lost and the radiation efficiency of the antenna deteriorates.

Although not a sliding mobile phone, a folding mobile phone is provided with a conductor element that is not connected to the ground in a part of the housing, and when the KEY housing and the LCD housing are closed, the conductor element is connected to the antenna element. Some have improved the radiation efficiency of the antenna by changing the radiation pattern by coupling (see, for example, Patent Document 1).
However, this foldable mobile phone requires a space for providing a conductor element.
Moreover, it does not improve the radiation characteristics of the antenna when the KEY casing and the LCD casing are open.

JP 2003-37415 A (paragraph numbers [0030] to [0041], FIG. 1)

  Since the conventional sliding portable wireless terminal is configured as described above, a large current flows through the flexible cable connecting the KEY casing and the LCD casing, resulting in a large power loss and a deterioration in the radiation characteristics of the antenna. There was a problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a sliding portable wireless terminal capable of reducing the current flowing through a flexible cable and improving the radiation characteristics of an antenna. .

  The sliding portable wireless terminal according to the present invention is mechanically fixed to the first casing, and is fitted to a rail groove formed in the second casing, so that the first casing And a second housing are slidably coupled to each other, and the conductive member is in a state where the first housing and the second housing are slid open, or the first housing. When the body and the second housing are in a closed state, the conductor wire laid in the rail groove and the ground in the first housing are electrically connected.

  According to the present invention, the first casing and the second casing are mechanically fixed to the first casing and fitted into the rail groove formed in the second casing. A conductive member for slidably coupling the body is provided, and the conductive member is in a state where the first casing and the second casing are slid open, or the first casing and the second casing When the housing is in a closed state, the conductor wire laid in the rail groove and the ground in the first housing are configured to be electrically connected, so the current flowing through the flexible cable is reduced, There is an effect that the radiation characteristic of the antenna can be improved.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a sliding mobile phone (sliding mobile wireless terminal) according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram showing the basic configuration of the sliding mobile phone according to the first embodiment of the present invention, and FIG. 3 is an explanatory diagram showing the current distribution on the substrate in the sliding mobile phone according to the first embodiment of the present invention. It is.
In the figure, a KEY casing 1 that is a first casing is provided with an operation section 2 and a transmission section 3, and the KEY casing 1 includes an antenna housing section 4 containing an antenna element 5, The substrate housing 6 includes a KEY substrate 7 including an RF circuit (feed circuit) that feeds power to the antenna element 5 and the like.
A display unit 12, a transmitter unit 13, and a receiver unit 14 are disposed in an LCD casing 11 that is a second casing, and the LCD casing 11 includes an LCD substrate 15.
The KEY housing 1 and the LCD housing 11 are formed of a member such as resin, for example.

FIG. 4 is an explanatory view showing a sliding mechanism of a sliding mobile phone according to Embodiment 1 of the present invention, and FIG. 5 is an explanatory view showing a main part of the sliding mobile phone according to Embodiment 1 of the present invention.
In the figure, a rail groove 21 is formed in the LCD casing 11, and a conductor wire 22 is laid in the rail groove 21.
A slide part 23, which is a conductive member, is mechanically fixed to the KEY casing 1, and the slide part 23 is fitted to a rail groove 21 formed in the LCD casing 11, so that the KEY casing 1 and the LCD When the casing 11 is slidably coupled and the KEY casing 1 and the LCD casing 11 are slid open, the conductor wire 22 and the ground of the KEY substrate 7 are electrically connected.

  FIG. 6 is an explanatory diagram showing a detailed configuration of the KEY substrate 7 built in the board housing portion 6 of the KEY housing 1, and FIG. 7 shows the antenna element 5 built in the antenna housing portion 4 of the KEY housing 1. It is explanatory drawing which shows.

Next, the operation will be described.
As shown in FIG. 1, the slide-type mobile phone is composed of a KEY housing 1 and an LCD housing 11, and the KEY housing 1 and the LCD housing 11 are slidably coupled.
A KEY substrate 7 is built in the substrate housing portion 6 of the KEY housing 1, and the KEY substrate 7 is provided with an RF circuit as shown in FIG.
Further, the RF circuit of the KEY substrate 7 and the antenna element 5 are coupled by a transmission line, and the antenna element 5 is fed from the RF circuit of the KEY substrate 7 to transmit and receive radio waves.

The antenna element 5 may be formed on a dielectric base as shown in FIG. 6A, or may be formed on the KEY substrate 7 as shown in FIG. 6B. It may be configured.
Further, the antenna element 5 is assumed to be an antenna of a type in which a current flows through the KEY substrate 7, such as a monopole antenna.
In the case of a monopole antenna, as shown in FIGS. 7A to 7D, an antenna element such as a plate antenna, a meander antenna, a whip antenna, or a helical antenna may be used.

Various slide parts 23 constituting the slide mechanism can be considered. In the first embodiment, as shown in FIGS. 4 and 5, the slide parts 23 are fitted with rail grooves 21 formed in the LCD casing 11. Thus, a slide part 23 that slidably couples the KEY housing 1 and the LCD housing 11 is assumed.
That is, the slide part 23 moves along the rail groove 21 to constitute a slide mechanism that slides the KEY casing 1 and the LCD casing 11.

In the first embodiment, a conductor wire 22 is laid in the rail groove 21 as shown in FIG. 5 (the conductor wire 22 is ideally made of copper having a high conductivity. In the state where the KEY casing 1 and the LCD casing 11 are slid open, the slide part 23 is a conductor as shown in FIGS. 5 (a) and 5 (b). It is electrically connected to the line 22.
Further, since the slide part 23 is always electrically connected to the ground of the KEY substrate 7, the slide part 23 is connected to the conductor wire 22 in a state where the KEY casing 1 and the LCD casing 11 are slid open. And the ground of the KEY substrate 7 are electrically connected.
As a result, a current serving as a radiation source flows from the KEY substrate 7 to the conductor wire 22.

Here, when the conductor length of the conductor wire 22 is Lx and the length in the width direction of the KEY substrate 7 is Ly, the conductor length Lx of the conductor wire 22 and the width of the KEY substrate 7 are set so that Lx + Ly≈λ / 2. If the length Ly in the direction is determined, the radiated current resonates in the width direction of the KEY substrate 7 and the length of the conductor wire 22, and power is radiated from the conductor wire 22.
When a large current flows through the conductor wire 22 in this way, the current flowing from the radiation source to the flexible cable or the KEY substrate 7 is reduced.

  In the conventional slide type mobile phone, since the distance between the KEY substrate 7 built in the KEY housing 1 and the LCD substrate 15 built in the LCD housing 11 is narrow, a large current flows through the flexible cable, resulting in a large power loss. In the state where the KEY casing 1 and the LCD casing 11 are slid and opened as in the first embodiment, a large current flows through the conductor wire 22 and the current flowing through the flexible cable is generated. Therefore, the power loss can be suppressed and the radiation efficiency of the antenna can be improved.

However, when the KEY housing 1 and the LCD housing 11 are closed, the slide part 23 is not electrically connected to the conductor wire 22 as shown in FIGS. The ground of the KEY substrate 7 is not electrically connected.
For this reason, it is impossible to suppress the current flowing through the flexible cable by flowing a large current through the conductor wire 22, but impedance matching is performed in a state where the KEY casing 1 and the LCD casing 11 are closed. If the conductor length Lx of the conductor wire 22 is adjusted, the radiation efficiency of the antenna can be improved not only in the opened state of the KEY casing 1 and the LCD casing 11, but also in the closed state. .

FIG. 8A is an explanatory diagram showing a change in impedance when the conductor wire 22 is laid in the rail groove 21 on the side opposite to the feeding point of the antenna element 5.
As shown in FIG. 8A, it can be seen that when the length of the conductor wire 22 is increased, resonance appears in the impedance and the return loss is greatly improved.
When the length of the conductor wire 22 is 40 mm, resonance appears in the band, and a very good characteristic is obtained in which the return loss in the band is 12.5 dB or more.
FIG. 9 shows the radiation efficiency in this case. From this, it is understood that the radiation efficiency is improved by 3.6 dB at 2150 MHz by setting the length of the conductor wire 22 on the side opposite to the feeding point to 40 mm.

On the other hand, FIG. 8B is an explanatory diagram showing a change in impedance when the conductor wire 22 is laid in the rail groove 21 on the feeding point side of the antenna element 5.
As shown in FIG. 8B, it can be seen that a narrow band is obtained by laying the conductor wire 22 on the feeding point side.
Therefore, it can be seen that the arrangement of the conductor wire 22 is important in terms of length and position with respect to the feeding point.
Note that the slide part 23 may be arranged in the middle of the KEY housing 1 as shown in FIG. Although the length of the conductor wire 22 differs depending on the arrangement position, a similar function can be obtained.

  As is apparent from the above, according to the first embodiment, the KEY case 1 is mechanically fixed, while being fitted with the rail groove 21 formed in the LCD case 11, the KEY is obtained. A conductive slide part 23 for slidably coupling the casing 1 and the LCD casing 11 is provided. When the slide part 23 is in a state where the KEY casing 1 and the LCD casing 11 are slid open, Since the configuration is such that the conductor wire 22 laid in the rail groove 21 and the ground of the KEY substrate 7 are electrically connected, the current flowing through the flexible cable can be reduced and the radiation characteristics of the antenna can be improved. Play.

Embodiment 2. FIG.
In the first embodiment, the KEY casing 1 and the LCD casing 11 are fitted to the rail groove 21 formed in the LCD casing 11 while being mechanically fixed to the KEY casing 1. Conductive slide parts 23 that are slidably coupled are provided, and when the slide parts 23 are in a state where the KEY casing 1 and the LCD casing 11 are slid open, the conductors laid in the rail grooves 21 As shown in FIG. 11, when the KEY housing 1 and the LCD housing 11 are closed as shown in FIG. 11, the wire 22 and the ground of the KEY substrate 7 are electrically connected. The conductor wire 22 laid in the rail groove 21 and the ground of the KEY substrate 7 may be electrically connected.

In this case, when the KEY housing 1 and the LCD housing 11 are closed (see FIGS. 11C and 11D), a large current flows through the conductor wire 22 and the current flowing through the flexible cable decreases. The power loss can be suppressed and the radiation efficiency of the antenna can be improved.
However, in the state in which the KEY housing 1 and the LCD housing 11 are slid open, the slide part 23 is not electrically connected to the conductor wire 22 as shown in FIGS. The line 22 and the ground of the KEY substrate 7 are not electrically connected.
For this reason, it is impossible to suppress the current flowing through the flexible cable by flowing a large current through the conductor wire 22. However, impedance matching should be performed with the KEY housing 1 and the LCD housing 11 open. If the conductor length Lx of the conductor wire 22 is adjusted, the radiation efficiency of the antenna can be improved not only in the closed state of the KEY casing 1 and the LCD casing 11, but also in the open state. .

Embodiment 3 FIG.
FIG. 12 is an explanatory view showing a sliding mechanism of a sliding mobile phone according to Embodiment 3 of the present invention, and FIG. 13 is an explanatory view showing a main part of the sliding mobile phone according to Embodiment 3 of the present invention. In the figure, the same reference numerals as those in FIG. 4 and FIG.
A rail groove 31 is formed in the LCD housing 11, and a conductor wire 32 is laid in the rail groove 31.
A slide rail 33 is formed on the KEY housing 1, and the slide rail 33 is fitted into the rail groove 31 to slidably couple the KEY housing 1 and the LCD housing 11.
A slide part 34, which is a conductive member, is provided on the slide rail 33, and electrically connects the conductor wire 32 and the ground of the KEY substrate 7 when the KEY casing 1 and the LCD casing 11 are slid open. ing.

  In the first embodiment, the slide part 23 is fitted to the rail groove 21 formed in the LCD housing 11 to slidably couple the KEY housing 1 and the LCD housing 11 to each other. In the state in which the LCD casing 11 is slid open, the conductor wire 22 and the ground of the KEY substrate 7 are electrically connected. However, as shown in FIGS. 33 is fitted to the rail groove 31 to slidably couple the KEY casing 1 and the LCD casing 11, and the slide part 34 provided on the slide rail 33 is connected to the KEY casing 1 and the LCD casing 11. When the sliding state is open, the conductor wire 32 and the ground of the KEY substrate 7 may be electrically connected, and the same effect as in the first embodiment can be obtained.

In this case, in a state where the KEY housing 1 and the LCD housing 11 are slid open (see FIGS. 13A and 13B), a large current flows through the conductor wire 32, and the current flowing through the flexible cable flows. Therefore, the power loss can be suppressed and the radiation efficiency of the antenna can be improved.
However, when the KEY housing 1 and the LCD housing 11 are closed, the slide part 34 is not electrically connected to the conductor wire 32 as shown in FIGS. The ground of the KEY substrate 7 is not electrically connected.
For this reason, it is impossible to suppress the current flowing through the flexible cable by flowing a large current through the conductor wire 32. However, impedance matching should be performed with the KEY casing 1 and the LCD casing 11 closed. If the conductor length Lx of the conductor wire 32 is adjusted, the radiation efficiency of the antenna can be improved not only in the opened state of the KEY casing 1 and the LCD casing 11, but also in the closed state. .

  In the third embodiment, the LCD housing 11 is formed with the rail groove 31 and the KEY housing 1 is formed with the slide rail 33. However, the LCD housing 11 includes the slide rail. 33, the conductor wire 32 may be laid on the slide rail 33, and the KEY housing 1 may be formed with the rail groove 31 in which the slide part 34 is provided. Can do.

Embodiment 4 FIG.
In the third embodiment, when the slide part 34 is provided on the slide rail 33 and the KEY casing 1 and the LCD casing 11 are slid and opened, the slide part 34 is connected to the conductor wire 32 and the KEY substrate 7. As shown in FIG. 14, when the slide part 34 is in a state where the KEY casing 1 and the LCD casing 11 are closed, the conductor wire 32 and the KEY substrate 7 are connected as shown in FIG. The ground may be electrically connected.

In this case, when the KEY casing 1 and the LCD casing 11 are closed (see FIGS. 14C and 14D), a large current flows through the conductor wire 32 and the current flowing through the flexible cable decreases. The power loss can be suppressed and the radiation efficiency of the antenna can be improved.
However, in the state where the KEY casing 1 and the LCD casing 11 are slid open, the slide part 34 is not electrically connected to the conductor wire 32 as shown in FIGS. The line 32 and the ground of the KEY substrate 7 are not electrically connected.
For this reason, it is impossible to suppress the current flowing through the flexible cable by flowing a large current through the conductor wire 32. However, impedance matching should be performed with the KEY housing 1 and the LCD housing 11 open. If the conductor length Lx of the conductor wire 32 is adjusted, the radiation efficiency of the antenna can be improved not only in the closed state of the KEY casing 1 and the LCD casing 11 but also in the open state. .

Embodiment 5. FIG.
In the first to fourth embodiments, the slide parts 23 and 34 electrically connect the conductor wires 22 and 32 and the ground of the KEY substrate 7. However, as shown in FIG. A reactance element 41 may be inserted between the KEY substrate 7 and the KEY substrate 7.
Depending on the frequency used, the lengths of the conductor wires 22 and 32 become longer and the conductor wires 22 and 32 may not fit in the rail grooves 21 and 31, but as described above, the slide parts 23 and 34 and the KEY substrate If the reactance element 41 is inserted between 7, the physical lengths of the conductor wires 22 and 32 can be shortened, so that the number of cases where the conductor wires 22 and 32 cannot fit in the rail grooves 21 and 31 can be reduced. .

Embodiment 6 FIG.
In the first to fourth embodiments described above, the slide parts 23 and 34 electrically connect the conductor wires 22 and 32 and the ground of the KEY substrate 7. However, as shown in FIG. As shown, an SPDT switch 42 (SPDT switch is an abbreviation for a Single Pole Double Throw switch, which is a switch for one input and two outputs) between the slide parts 23 and 34 and the KEY board 7. And a reactance element 43 corresponding to the frequency f1 for opening the slide and a reactance element 44 corresponding to the frequency f2 for closing the slide may be inserted.
The SPDT switch 42 serving as a selection frequency switching switch may be a semiconductor switch or a MEMS switch (MEMS is an abbreviation for Micro Electro Mechanical System and is a minute mechanical switch). In addition, an SP3T switch (SP3T switch is an abbreviation for a Single Pole 3 Throw switch and is a switch with one input and three outputs) may be used instead of the SPDT switch 42 for a triple band antenna.

Further, as shown in FIG. 16 (d), a lumped constant filter 45 may be inserted between the slide parts 23 and 34 and the KEY substrate 7.
The filter 45 based on the lumped constant obtains a reactance element for the frequency f1 for the frequency f1 when the slide is open and a reactance element for the frequency f2 for the frequency f2 when the slide is closed.

FIG. 18 is an explanatory diagram showing impedance characteristics when the conductor wire 22 is laid in the rail groove 21 when the frequency is in the 800 MHz band.
In particular, FIG. 18A shows a change in impedance when the conductor wire 22 is laid in the rail groove 21 opposite to the feeding point of the antenna element 5, and FIG. A change in impedance when the conductor wire 22 is laid in the rail groove 21 is shown.
FIG. 18A shows that the impedance narrows as the length of the conductor wire 22 on the side opposite to the feeding point is increased.
Further, from FIG. 18B, it can be seen that when the length of the conductor wire 22 on the feeding point side is 55 mm, the impedance characteristic does not change greatly, but when the length is 65 mm or more, the band is narrowed.

From this, it can be seen that laying the 40 mm conductor wire 22 in the rail groove 21 opposite to the feeding point is optimal in the 2 GHz band, but has an adverse effect in the 800 MHz band.
Furthermore, in the 800 MHz band, the case where the conductor wire 22 is not used is optimal. This case can be dealt with by providing the SPDT switch 42.
When using the 2 GHz band, the SPDT switch 42 selects a reactance element for 2 GHz, and when using the 800 MHz band, the SPDT switch 42 is opened (not connected to the conductor line 22) (see FIG. 17A). .
As a result, in the 800 MHz band, the conductor wire 22 is not connected to the KEY substrate 7, so that the impedance characteristics are not affected.
On the other hand, in the 2 GHz band, since the conductor wire 22 is connected to the KEY substrate 7, the impedance characteristics can be improved. That is, it is possible to adapt to a dual band antenna.

Moreover, in the said Embodiment 1, as shown in FIG. 8, the return loss of 1.7 GHz-1.8 GHz band is 12.5 dB by making the length of the conductor wire 22 on the opposite side to a feeding point into 45 mm. Very good characteristics are obtained. This case can be dealt with by using an SP3T switch.
On the output side of the SP3T switch, a reactance element for 2 GHz band, an open for 800 MHz band (not connected to the conductor line), and a reactance element for 1.7 GHz band are connected, and either SP3T switch is selected (Refer to FIG. 17B).
Here, as a reactance element, a conductor wire having a physical length of 40 mm is electrically equivalent to a conductor wire of 45 mm by being connected to a conductor wire of 40 mm through an inductance of 1 nH, so that an antenna in the 1.7 GHz band is used. The characteristics can be improved.
That is, it can be seen that good antenna characteristics can be obtained for all bands of 800 MHz, 1.7 GHz, and 2 GHz, and that the antenna can be applied to a triple band antenna.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a sliding mobile phone (sliding mobile wireless terminal) according to Embodiment 1 of the present invention. It is explanatory drawing which shows the basic composition of the slide type mobile telephone by Embodiment 1 of this invention. It is explanatory drawing which shows the electric current distribution on the board | substrate in the slide type mobile telephone by Embodiment 1 of this invention. It is explanatory drawing which shows the sliding mechanism of the sliding type mobile telephone by Embodiment 1 of this invention. It is explanatory drawing which shows the principal part of the slide-type mobile phone by Embodiment 1 of this invention. It is explanatory drawing which shows the detailed structure of the KEY board | substrate incorporated in the board | substrate accommodating part of a KEY housing | casing. It is explanatory drawing which shows the antenna element incorporated in the antenna accommodating part of a KEY housing | casing. (A) is explanatory drawing which shows the change of an impedance when a conductor wire is laid in the rail groove on the opposite side to the feeding point of an antenna element. (B) is explanatory drawing which shows the change of an impedance when a conductor wire is laid in the rail groove | channel by the side of the feeding point of an antenna element. It is a table | surface figure showing the radiation efficiency in the case of laying a conductor wire in the rail groove on the opposite side to the feeding point of an antenna element. It is explanatory drawing which shows the principal part of the slide-type mobile phone by Embodiment 1 of this invention. It is explanatory drawing which shows the principal part of the slide type mobile telephone by Embodiment 2 of this invention. It is explanatory drawing which shows the sliding mechanism of the sliding type mobile telephone by Embodiment 3 of this invention. It is explanatory drawing which shows the principal part of the slide-type mobile telephone by Embodiment 3 of this invention. It is explanatory drawing which shows the principal part of the slide type mobile telephone by Embodiment 4 of this invention. It is explanatory drawing which shows the principal part of the slide-type mobile phone by Embodiment 5 of this invention. It is explanatory drawing which shows the principal part of the slide type mobile telephone by Embodiment 6 of this invention. (A) is explanatory drawing which shows the usage example with a dual band antenna. (B) is explanatory drawing which shows a triple band antenna. (A) is explanatory drawing which shows the change of an impedance when a conductor wire is laid in the rail groove on the opposite side to the feeding point of an antenna element. (B) is explanatory drawing which shows the change of an impedance when a conductor wire is laid in the rail groove | channel by the side of the feeding point of an antenna element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 KEY housing | casing (1st housing | casing), 2 operation part, 3 transmission part, 4 antenna accommodating part, 5 antenna element, 6 board | substrate accommodating part, 7 KEY board | substrate, 11 LCD housing | casing (2nd housing | casing) , 12 Display unit, 13 Transmitter unit, 14 Receiver unit, 15 LCD board, 21 Rail groove, 22 Conductor wire, 23 Slide part (conductive member), 31 Rail groove, 32 Conductor wire, 33 Slide rail, 34 Slide part ( Conductive member), 41 reactance element, 42 SPDT switch (selection frequency switching switch), 43, 44 reactance element, 45 filter with lumped constant.

Claims (6)

  A first housing having a built-in antenna element for transmitting and receiving radio waves and a feeding circuit for feeding power to the antenna element, and a second housing having a rail groove in which a conductor wire is laid And mechanically fixed to the first casing, while being fitted to a rail groove formed in the second casing, the first casing and the second casing When the body is slidably coupled and the first casing and the second casing are slid open, or the first casing and the second casing are closed A sliding portable wireless terminal comprising: a conductive member that electrically connects the conductor wire and the power feeding circuit when in a state of being present.   A first housing having a built-in antenna element for transmitting and receiving radio waves and a feeding circuit for feeding power to the antenna element, and a rail groove in which a conductor wire is laid are formed, and the rail groove is A second housing that is slidably coupled to the first housing, and a slide formed on the first housing; Provided in the rail, when the first casing and the second casing are slid open, or when the first casing and the second casing are closed A sliding portable wireless terminal comprising a conductive member that electrically connects the conductor wire and the power feeding circuit.   A first housing having a built-in antenna element for transmitting and receiving radio waves and a feeding circuit for feeding power to the antenna element, and a slide rail on which a conductor wire is laid are formed. A second casing that is slidably coupled to the first casing and is fitted to a rail groove formed in the first casing; and a rail formed in the first casing Provided in the groove, when the first casing and the second casing are slid open, or when the first casing and the second casing are closed A sliding portable wireless terminal comprising a conductive member that electrically connects the conductor wire and the power feeding circuit.   The sliding portable wireless terminal according to any one of claims 1 to 3, wherein a reactance element is inserted between the conductive member and the power feeding circuit.   The sliding portable wireless terminal according to any one of claims 1 to 3, wherein a selection frequency switching switch is inserted between the conductive member and the power feeding circuit. The sliding portable wireless terminal according to any one of claims 1 to 3, wherein a filter with a lumped constant is inserted between the conductive member and the power feeding circuit.

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