KR100825928B1 - Sliding portable radio - Google Patents

Abstract

One of the conductors 1 and the other of the conductors 2 has a slide structure, and the other conductor 2 is provided with a radiating element 3. On one of the conductors 1 and the other of the conductors 2, one connection terminal 5 and the other connection terminal 6 which are in an electrically connected state at the time of extraction are provided, respectively. In addition, the load 7 is connected in series between the other connecting terminal 6 and the other conductor 2, so that at the time of drawing, one conductor 1 and the other conductor 2 are loaded. Electrical connection is made through (7).

Conductor, load, connection terminal, slide structure

Description

Sliding portable radio {SLIDING PORTABLE RADIO}

The present invention relates to a slide type portable radio which slides a plurality of casings into a drawing and storing state.

BACKGROUND ART In general, portable radios use a flexible cable to connect conductors to each other in order to exchange electrical signals between two or more conductors. At this time, the current induced in the conductor is almost determined by the size of the conductor, the length and width of the flexible cable, and the connection position, which are mainly determined by the design of the portable radio. For this reason, even if the electrical length of the radiating element and the arrangement method of the element are changed, there is no means for drastically changing the radiation pattern, and realizing a high-gain antenna that is optimal for holding states of a plurality of frequency bands and various portable radios. It was difficult.

In order to solve the above problems, in a fold-type portable radio apparatus, a radiating element is provided on any one of a plurality of conductors, and a wire conductor which connects the conductors to each other besides the flexible cable and the wire conductors. There existed a structure provided with the load connected in series and changing a radiation pattern by changing the impedance of a load (for example, refer patent document 1).

[Patent Document 1] Japanese Patent Laid-Open No. 2003-332931

However, the conventional portable radio apparatus relates to a folding portable radio apparatus, and when such a configuration is applied to a portable radio apparatus having a slide structure, it is also dependent on the amount of slide for drawing or storing the casing, but the conductors are connected to each other. In order to prevent the linear conductors to be broken, there was a problem that very long linear conductors were required.

Disclosure of Invention The present invention has been made to solve the above problems, and an object of the present invention is to obtain a portable radio which can realize a high gain antenna so as to be optimal for a plurality of frequency bands and various holding states of portable radios. It is done.

The slide type portable radio | wireless apparatus which concerns on this invention provides a radiating element in any one of the some conductor, and extracts these conductors to each of the one lead body and the other lead body which have a slide structure. One and the other connection terminal which are electrically connected at the time of a city are provided. The load is connected in series between one connection terminal and one conductor or between the other connection terminal and the other conductor.

This makes it possible to obtain a slide type portable radio having a high gain antenna so as to be optimal for a plurality of frequency bands and various portable radios.

1 is a configuration diagram showing a drawing state of a slide-type portable radio apparatus according to the first embodiment of the present invention.

2 is a configuration diagram showing a storage state of the slide-type portable radio apparatus according to the first embodiment of the present invention.

Fig. 3 is a block diagram showing the respective conductors of the slide type portable radio apparatus according to the first embodiment of the present invention.

4 is an explanatory diagram showing a relationship between a control signal and a frequency of the slide-type portable radio apparatus according to the first embodiment of the present invention.

5 is an explanatory diagram of an inclined state in the slide-type portable radio apparatus according to the first embodiment of the present invention.

6 is an explanatory diagram of a space radiation pattern in an inclined state of the slide-type portable radio apparatus according to the first embodiment of the present invention.

7 is a configuration diagram showing a storage state of the slide-type portable radio apparatus according to the second embodiment of the present invention.

Fig. 8 is a configuration diagram showing each map member of the slide-type portable radio apparatus according to the second embodiment of the present invention.

Fig. 9 is a configuration diagram showing each map member of the slide-type portable radio apparatus according to the third embodiment of the present invention.

10 is an explanatory diagram showing a relationship between a control signal and a frequency of the slide-type portable radio apparatus according to the third embodiment of the present invention.

It is a block diagram which shows each map member of the slide type portable radio | wireless apparatus by Embodiment 4 of this invention.

Fig. 12 is a configuration diagram showing a drawing state of the slide-type portable radio apparatus according to the fifth embodiment of the present invention.

Fig. 13 is a configuration diagram showing a storage state of the slide-type portable radio apparatus according to the fifth embodiment of the present invention.

It is explanatory drawing of the linear conductor of the slide-type portable radio | wireless apparatus which concerns on Example 5 of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, in order to demonstrate this invention further in detail, the best form for implementing this invention is demonstrated according to attached drawing.

Example  One.

1 and 2 are structural diagrams showing a portable radio apparatus according to the first embodiment of the present invention, in which FIG. 1 shows a casing pulled out state and FIG. 2 shows a casing housed state.

3 is a block diagram showing the respective conductors of the portable radio apparatus according to the first embodiment of the present invention.

The slide type portable radio apparatus of this embodiment has one conductor 1, the other conductor 2, a radiation element 3, a linear conductor 4, one connection terminal 5, and the other connection. The terminal 6, the load 7, the high frequency switch 8, and the control part 9 are provided. One of the conductors 1 is, for example, a conductor (casing) in which a speaker, a display, a camera, etc. are arranged, and the other of the conductors 2 is, for example, an RF circuit, a battery, a microphone, a dial. It is a map body (casing) in which a key, a camera, and the like are arranged. These one lead member 1 and the other lead member 2 have a slide structure, and have a mechanism for sliding out, withdrawing, and storing, and are configured to be in a stored state when not in use.

The radiating element 3 is an antenna electrically supplied through distribution lines (not shown for these RF circuits and distribution lines) which are electrically supplied from the RF circuit provided on the other conductor 2. . The linear conductor 4 is a linear conductor that connects electrical signals between one of the conductors 1 and the other of the conductors 2, and uses the conductors 4 to operate a speaker, a display, and a camera. I'm making it. As the linear conductors 4, about 40 to about 90 linear conductors are usually wired, and a bundle of these wires is used as a linear conductor (flexible cable).

One connection terminal 5 and the other connection terminal 6 are connectors for connection provided in order to electrically connect the one conductor 1 and the other conductor 2, and one connection terminal (5) is connected to one conductor 1, and the other connection terminal 6 is connected to the other conductor 2, respectively. Moreover, these one connecting terminal 5 and the other connecting terminal 6 are provided in both sides (two places) with respect to a slide direction. The one connecting terminal 5 and the other connecting terminal 6 are electrically connected at the time of withdrawing as shown in FIGS. 1 and 2, and are arranged at positions that are electrically separated during storage. have.

The load 7 is a load which can be connected in series with the other connection terminal 6 and can change an impedance. In other words, the load 7 is actually composed of a plurality of inductances or capacitors, and the inductance actually used by the high frequency switch 8 which is selectively operated by the control signal from the control unit 9 as shown in FIG. 3. And condenser can be selected. The high frequency switch 8 is based on the control signals ctl-a and ctl-b from the control unit 9 and each of the two other connection terminals 6 and the load 7 (Zl, Z2). Alternatively, for example, an SPDT switch for switching the loads 7 (Z3 and Z4). The high frequency switch 8 may be a mechanical switch such as a MEMS switch, a PIN diode, a variable capacitance diode, or the like.

The control part 9 is a function part for switching control of the load 7 (Zl, Z2, Z3, Z4), and the control signal ctl-a, ctl for load switching according to the frequency band and hold | maintenance state to be used. It is configured to output -b.

Next, the operation of the first embodiment will be described.

As an example, the slide-type portable radio of the present embodiment is used at two frequencies f1 and f2, and these frequencies are f1 = 2.0 GHz and f2 = 800 MHz. Now, it is assumed that control signals using the frequency f1 are exchanged by the control from the control unit 9.

4 is an explanatory diagram showing a relationship between control signals ctl-a and ctl-b and frequencies f1 and f2.

When using at the frequency f1, the control signal is a ctl-a of "H" and a ctl-b of "L". At this time, each of the high frequency switches 8 includes the load 7 (Z1) and the load 7. Select (Z3).

In addition, in the slide type portable radio apparatus of the present embodiment, the control unit 9 records information on the frequency band currently used, the holding state of the portable radio apparatus, and voice and data. At this time, if there is no sensor capable of detecting the holding state, only information in the frequency band is assumed to be recorded.

Based on this information, the control part 9 sends a signal to the high frequency switch 8, detects this signal with the high frequency switch 8, and the impedance of the load 7 connected to each high frequency switch 8 is carried out. Select. As a result, the current distribution induced by one of the conductors 1 and the other of the conductors 2 is changed, so that the radiation pattern that is optimal for the use state can be selected.

At this time, in order to obtain an optimal radiation pattern, in consideration of the usage form (used frequency band and holding state of the radio) in advance, the load 7 that becomes the radiation pattern that is optimal for each usage form is determined by experiment or simulation. It needs to be placed.

Here, the effect of changing the radiation pattern can also be described.

Current portable radios provide various functions such as browsing and mail in addition to calls. When using e-mail or browsing, the portable radio remains inclined, and the antenna gain is lowered due to polarization loss or human body loss due to human influence.

5 is an explanatory diagram of a slide-type portable radio in such an inclined state.

In this embodiment, when the portable radio device is tilted in the free space, it is possible to obtain high-gain antenna performance that reduces antenna deterioration caused by the human body by improving the directivity of the principal polarization of the antenna opposite to the human body. In addition, in FIG. 5, 0 degree direction has shown the opposite side to a human body.

6 is an explanatory diagram of a spatial radiation pattern showing this state.

In FIG. 6, the pattern 101 has no one connecting terminal 5 and the other connecting terminal 6, and only one conductor 1 and the other conductor 2 using the linear conductors 4 alone. ) Is a spatial radiation pattern in the case where it is connected, and the pattern 102 is a spatial radiation pattern in the case where the directivity of the principal polarization of the antenna on the opposite side to the human body is increased. In Fig. 6, 103 represents a principal polarization and 104 represents a vertical polarization. Here, looking at the level of the main polarization wave 103 in the 0 ° direction, it can be seen that the pattern 102 is stronger than the pattern 101. In other words, it can be seen that the directivity in the 0 ° direction is getting stronger.

In addition, as the use frequency increases or the holding state of the portable radio becomes complicated, the state to be selected increases. However, in modern portable radios, which are miniaturized, the radiating element is dependent on the use frequency or the holding state of the portable radio. Increasing the antenna results in an increase in the size of the external dimension, and when a plurality of antennas are provided, there is also a problem that the coupling between the antennas should be considered. Therefore, this configuration that optimizes the spatial radiation pattern without increasing the number of antennas is also effective in this respect.

As described above, according to the slide-type portable radio apparatus of the first embodiment, the radiating element provided on at least one of the plurality of conductors, and one of the conductors having the slide structure, and the other of the conductors, One and the other connection terminal which are respectively connected to the conductor, and are electrically connected at the time of extraction of these conductors, and between the one connection terminal and the one conductor or the other connection terminal Since a load connected in series with the conductors is provided, it is possible to obtain a slide type portable radio having a high gain antenna that is optimal for holding states of a plurality of frequency bands and various portable radios.

Further, according to the slide-type portable radio apparatus of the first embodiment, since the impedance of the load is configured to be switched, even if the response to a large number of frequencies and the maintenance state of the portable radio apparatus are complicated, There is an effect that a sliding portable radio having an antenna can be obtained.

Example  2.

In the first embodiment, when the casing is pulled out, the one connecting terminal 5 and the other connecting terminal 6 are electrically connected, and the housing is separated when the casing is stored. It is also possible to provide a connection terminal at the time of storage to be connected with a load, which is shown next as Example 2 below.

Fig. 7 is a configuration diagram showing the portable radio apparatus according to the second embodiment of the present invention, and shows a state at the time of housing the casing.

Fig. 8 is a configuration diagram showing each leader of the portable radio apparatus according to the second embodiment of the present invention.

In this embodiment, one connecting terminal 5 is connected to one of the conductors 1, and a connecting terminal 10 is attached at the time of storing. This storage connection terminal 10 is a storage connection connector provided in the position electrically connected with the other connection terminal 6 of the other conductor 2 side at the time of storage shown in FIG. In addition, in this embodiment, the withdrawal / storage detector 11 for detecting the withdrawal / storage of the casing is provided. The draw / storage detector 11 is a function unit that detects whether the casing is in a pulled out state or a stored state, and sends this detection signal to the control unit 9a. Further, the control unit 9a is configured to output control signals ctl-a and ctl-b for selecting a load based on the withdrawal / storage detection signal from the withdrawal / storage detector 11 or information on the frequency band used. have. Since each other structure is the same as that of Example 1, the same code | symbol is attached | subjected to the corresponding part, and the description is abbreviate | omitted.

In the second embodiment, in the drawn out state, one connection terminal 5 and the other connection terminal 6 are connected, and the withdrawal / storage detector 11 can detect that it is in the drawn out state.

As a result, the control unit 9a performs the same control as in the first embodiment. For example, when performing load selection by the frequencies f1 and f2, the control unit 9a sets the control signals ctl-a and ctl-b to the values shown in Fig. 4 of the first embodiment.

On the other hand, in the housing state of the casing, the other connection terminal 6 is connected to the connection terminal 10 at the time of storage. At this time, the take-out / storage detector 11 detects the housing state of the casing, and a detection signal indicating this is output to the control unit 9a. Thereby, the high frequency switch 8 can be controlled even at the time of storing, and therefore the load 7 can be selected at the time of storing.

As described above, according to the slide-type portable radio apparatus of the second embodiment, the connection terminal is connected to the conductor side to which the connection terminal to which the load is not connected is attached, and the load is connected at the time of storing one and the other conductors. Since the connection terminal at the time of storing is arrange | positioned so that it may be electrically connected with the space | interval, the spatial radiation pattern can be changed also at the time of storage, and therefore the spatial radiation pattern suitable for each withdrawal and storage can be obtained, and it is optimal in any state. A sliding portable radio having a high gain antenna can be obtained.

Further, according to the slide-type portable radio apparatus of the second embodiment, a drawer / storage detector for detecting whether one and the other conductors are in a pulled out state or a stored state is provided, and the load or the storage state is determined by the drawer / storage detector. Since the impedance of the switch can be switched, even when the response to a large frequency band or the holding state of the portable radio becomes complicated, it is possible to switch to a suitable spatial radiation pattern at the time of withdrawal and storage, so that it is optimal under various conditions. There is an effect that a sliding portable radio having a gain antenna can be obtained.

Example  3.

FIG. 9: is a block diagram which shows one lead body 1 and the other lead body 2 of the sliding portable radio apparatus of Example 3 separately.

In the third embodiment, three or more loads 7 each have different impedances (Z1, Z2, Z3, ...) (Z4, Z5, Z6, ...), and the high-frequency switch 8a is used for these loads. (7) is a selectable configuration. In addition, a radio state holding state detector 12 is provided.

The radio state holding state detector 12 is realized using, for example, an acceleration sensor or the like, and for example, what kind of state the slide type portable radio is held in, for example, whether it is held in the vertical position or in the horizontal position. Is detected, and this detection signal is output to the control unit 9b. The control part 9b has a function which transmits a control signal to the high frequency switch 8a based on the information of the frequency band to be used, or the detection signal of the radio base holding state detector 12, for example.

10 is an explanatory diagram showing a relationship between a control signal and a frequency.

As shown in the figure, the control signals are ctl-a, ctl-b, ctl-c,... By this, the frequency to be used is selected.

In the slide-type portable radio apparatus configured as described above, when controlling the radiation pattern corresponding to the frequency to be used, the control unit 9b outputs the control signal corresponding to the frequency to the high frequency switch 8a. For example, when the frequency is f1, the control signal is ctl-a "H", ctl-b is "H", and ctl-c is "H".

When the radiation pattern is controlled based on the detection signal from the radio state holding state detector 12, the control unit 9b controls the control signal ctl with respect to the high frequency switch 8a so that the load 7 corresponding to the state of holding is selected. -a, ctl-b, ctl-c,... Outputs

As described above, according to the slide-type portable radio apparatus of the third embodiment, three or more impedances of the loads can be selected, so that even if the correspondence to more frequencies and the maintenance state of the portable radio are complicated, There is an effect that a sliding portable radio having a high gain antenna can be obtained.

Example  4.

Fig. 11 is a configuration diagram showing each leader in the slide-type wireless radio of the fourth embodiment.

In this embodiment, instead of the load 7 and the high frequency switch 8, the LC series resonant circuit 13 is provided as a circuit whose reactance changes with frequency. In other words, in the first embodiment, it is possible to change the radiation pattern in the frequency bands f1 and f2 by changing the load 7 corresponding to two frequencies f1 and f2 and using the high frequency switch 8. Made possible. In contrast, in the fourth embodiment, the high frequency switch 8 according to the first embodiment is not used.

For example, f1 = 2.OGHz, f2 = 800MHz, z1 for f1 and z2 for f2 are selected. In Example 1, the load selected at this time is Z1 → short, Z2 → 1.5pF. In this case, the LC series resonant circuit 13 capable of obtaining a reactance of short at 2.OGHz and 1.5pF equivalent at 800 MHz can be used, and the same effects as those of the first embodiment can be obtained. In the example of illustration, one of the loads 7 (Z3, Z4) has already been configured in the same manner as in the first embodiment, but in this regard, the LC series resonant circuit 13 is replaced in the same manner as above. The switch 8 may not be necessary. In addition to the LC series resonant circuit 13, in order to obtain a desired reactance, an effect equivalent to that of Example 4 can be obtained by using a series capacitor, inductance, OΩ (short), or an LC parallel resonant circuit.

As described above, according to the slide-type portable radio apparatus of the fourth embodiment, since a circuit whose reactance changes with frequency is used as a load, a switch for switching the load or a control circuit around the switch may not be required. In addition, the cost can be reduced, and the elimination of parts installation area such as a switch can contribute to miniaturization as a slide type portable radio.

Example  5.

12 and 13 are structural diagrams of the slide-type portable radio apparatus of the fifth embodiment, in which FIG. 12 shows a casing take-out and FIG. 13 shows a casing stowage.

In Example 5, the length is specific to each of the one conductor 1 and the other conductor 2 instead of one of the connection terminals 5 to the high frequency switch 8 in Example 1. FIG. The linear conductor 14 which becomes (lambda) / 4 of a frequency is provided. This linear conductor 14 is provided in the position which is close at the time of casing extraction, and isolate | separates at the time of housing | casing storage.

14 is an explanatory diagram of the linear conductor 14.

In the figure, impedance Za, which determines the B side from the A side, is the impedance of the transmission line with the open end. In other words, when the characteristic resistance of the transmission line is R0, the impedance Za becomes Za = I * RO * cot (KL). Here, K is the wave number (= 2π / λ), L is the line length, and when the line length L is λ / 4, the impedance Za = OΩ (short). For example, by selecting the line length L to be? / 4 in the 2.OGHz band, Za = O? Can be realized in the 2.OGHz band. At this time, for example, in the 800 MHz band, RO is set to a predetermined value, and the impedance can be set to a value equivalent to the load 7 (Z2, Z4) in the first embodiment.

With such a configuration, the length of the linear conductor 14 is set to a predetermined frequency, for example, λ / 4 in the 2.OGHz band, and when the casing is taken out, it can be regarded as OΩ in the 2.OGHz band. In addition, a configuration having a predetermined impedance can be realized at 800 MHz. At the time of storing the casing, the linear conductors 14 disposed on the respective conductors are separated from each other, as shown in Fig. 13, so that the one conductor 1 and the other conductor 2 are open. It becomes a state.

Moreover, in the example of illustration, the linear conductor 14 is provided in one slide direction of the one conductor 1 and the other conductor 2, and one connection terminal 5-high frequency switch ( 8) (not shown here) is provided, but the linear conductors 14 may be provided on both sides.

As described above, according to the slide-type portable radio apparatus of the fifth embodiment, each of the radiating elements provided on at least one of the plurality of conductors and one of the ones having the slide structure and the other of the plurality of conductors are provided. Since the linear conductors are provided at positions close to each other when the conductors are drawn out and have a line length having a value corresponding to a wavelength of a predetermined frequency, no expensive surface treatment is required, The effect equivalent to Example 1 can be acquired.

That is, since one connection terminal 5 and the other connection terminal 6 are movable contacts, it is necessary to maintain connection reliability even if the casing is taken out and stored frequently. As a result, the surface treatment of one connection terminal 5 and the other connection terminal 6 needs to perform plating etc. which are more expensive than a general connector, but the linear conductor 14 carries out casing | drawing-out and storage operation | movement. Even if it implements, since there is no part to contact, such surface treatment is not needed.

In each of the above embodiments, it has been described that the sliding portable radio has two conductors (one conductor 1 and the other conductor 2), but for example, in a three-layer structure, The same applies to a slide-type portable radio having three or more map members, to which each map member slides. In this case, the configuration of each of the above embodiments may be applied to all of the plurality of slide portions or may be applied only to one slide portion.

As described above, the slide type portable radio apparatus according to the present invention is suitable for use in cellular phones and the like by improving the spatial radiation pattern in accordance with the state of use and the frequency band of the portable radio apparatus having a slide structure of the lead. .

Claims (7)

A radiating element provided on at least one of the plurality of conductors; One of said plurality of conductors, each of which is connected to one of the conductors having a slide structure and the other of the conductors, which is electrically connected at the time of extraction of these conductors, and the other connection terminal; And a load connected in series between the one connecting terminal and one conductor or between the other connecting terminal and the other conductor. The method of claim 1, Sliding portable radio, characterized in that the load impedance is configured to be switchable. The method of claim 1, It is connected to the conductor side which the connection terminal which a load is not connected to, and the storage connection terminal provided at the time of accommodating one and the other conductor arrange | positioned so that it may be electrically connected with the connection terminal to which the load was connected. Sliding portable radio characterized in that. The method of claim 3, wherein Withdrawal / storage detectors for detecting whether one and the other of the conductors are in the drawn out state or stored state are installed, And the impedance of the load can be switched in accordance with the drawing or storing state by the drawing / storing detector. The method of claim 1, A radio | wireless holding state detector which detects the holding | maintenance state of one and the other conductor is provided, and the impedance of a load is switchable according to the holding | maintenance state by the said radio | wireless holding state detector. The method of claim 1, A slide type portable radio characterized by using a circuit whose reactance changes with frequency as a load. At a position close to each of the radiating elements provided on at least one of the plurality of conductors, and one of the plurality of conductors and one of the other conductors having a slide structure at the time of extraction of these conductors. And a linear conductor having a line length of a value corresponding to a wavelength of a predetermined frequency.

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