JP5061834B2 - ANTENNA DEVICE AND PORTABLE RADIO DEVICE USING THE SAME - Google Patents

Description

  The present invention relates to a hinge-integrated antenna device mainly used for communication equipment such as a mobile phone, and a portable wireless device using the same.

  Portable wireless devices have been transformed into data terminals that are used not only as conventional telephones, but also for sending and receiving e-mail and browsing web pages on the World Wide Web (WWW). Increasing size is being promoted. Under such circumstances, a two-fold type mobile phone terminal that is suitable for downsizing a portable wireless device and considered to be suitable for an increase in the screen size of a display has become widespread. In addition, miniaturization and thinning of wireless communication devices such as mobile phones are rapidly progressing, and a two-fold type mobile phone terminal has a function of automatically opening the terminal up to an angle where it can be operated when a button is pressed. There is a portable wireless device equipped with a one-push hinge. Furthermore, there is an antenna device of a conventional portable terminal in which an antenna element is disposed in the vicinity of the hinge portion. FIG. 13 shows a configuration example of such a conventional portable wireless device.

  FIG. 13 (a) is a plan view of a conventional two-fold portable wireless device in an open state, FIG. 13 (b) is a side view thereof, and FIG. 13 (c) is a conventional one-push hinge. It is a figure which shows the example of a structure. 13A to 13C, the portable wireless device 1301 is connected so that the upper housing 202 and the lower housing 1302 can be folded via the hinge portion 204, and the upper housing 202 includes A display 205 for displaying information of the portable wireless device and a sound hole portion 206 through which a voice can be heard during a call are arranged. A key 207 for performing button operation, a microphone 208, a battery 209 are provided in the lower housing 1302. And a built-in antenna 1304, and a metal one-push hinge 1303 is fixedly connected to the inside of the hinge portion 204. Further, a built-in antenna 1304 is built in the lower housing 1302 and in the vicinity of the hinge unit 204.

As a prior art document related to the invention of this application, for example, Patent Document 1 is known.
Japanese Patent No. 3984305

  However, the conventional portable radio apparatus needs to be arranged at a predetermined interval from the metal such as GND or one push hinge of the lower substrate so that the built-in antenna arranged in the vicinity of the hinge portion satisfies desired characteristics. For this reason, there is a problem that the lower housing protrudes from the hinge portion, and there is a problem that the thickness of the portable wireless device cannot be reduced because electromagnetic coupling with the one-push hinge increases. Furthermore, the space occupied by the built-in antenna is increased, and there is a problem that it is difficult to reduce the size of the entire terminal.

  The present invention has been made in view of such a situation. In addition to minimizing the number of dedicated components as an antenna, the present invention maintains the good antenna characteristics while reducing the number of components and reducing the thickness and weight. An object of the present invention is to provide a portable wireless device.

In order to solve the above problems, an antenna device of the present invention is an antenna device mounted on a portable terminal having a hinge portion that connects a first housing and a second housing, and the hinge portion includes A feed element including a metal one-push hinge, a feed part formed on a ground layer in a second housing, and electrically connected to the feed part and the one-push hinge; and the one-push This is an antenna device that functions as an antenna of the first frequency band using a hinge. In addition, a multi-band communication is realized by using a resonance element connected to a feed element and functioning as an antenna in a second frequency band higher than the first frequency band using the feed element and the resonance element. It is an antenna device.

With the above configuration, by allowing the one-push hinge to function as a part of the antenna, it is possible to suppress the protrusion of the lower housing, which has been a problem in the conventional portable wireless device, and to reduce the thickness of the entire terminal. It becomes possible. That is, it is possible to provide a portable radio device that has both a reduction in the number of components and a reduction in thickness and weight while maintaining good antenna characteristics in the two-fold portable radio device. In addition, a multi-band communication is realized by using a resonance element connected to a feeding element and functioning as an antenna in a second frequency band higher than the first frequency band using the feeding element and the resonance element. Can do.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same component.

(First embodiment)
FIGS. 1A and 1B are diagrams showing the configuration of the antenna device according to the first embodiment of the present invention, and FIGS. 2A, 2B, and 2C include the antenna device of FIG. It is a figure which shows the structural example of the portable radio | wireless communication apparatus.

  In FIG. 1, a hinge-integrated antenna 101 of this embodiment has a metal one-push hinge 102 connected to a power feeding unit 104 via an antenna element 103. In this case, one end of the substantially cylindrical fixed portion 102a of the one-push hinge 102 is connected to the substantially cylindrical sliding portion 102b so as to be concentrically rotatable, and is connected to the other end of the fixed portion 102a. Is connected to the button portion 102c. Although not shown, a metal spring and a shaft are provided inside the one-push hinge 102, and the sliding portion 102b rotates by pressing the button portion 102c. One end of the electrical length correction element 103a is electrically connected to the surface of the side surface of the fixed portion 102a via the connection portion 103d of the antenna element 103, and the other end of the electrical length correction element 103a is connected to the resonance element. 103b is connected. Further, the connection point between the electrical length correction element 103a and the resonance element 103b is connected to the power feeding unit 104 via the power feeding line 103c.

  In addition, although the case where the one push hinge 102 is made of metal has been described, a resin is used in part, such as a configuration in which the surface is covered with a resin material, or the surface of the fixed portion or the sliding portion is formed of resin. Needless to say.

  In the present embodiment, the configuration example using the electrical length correction element has been described. However, the present invention is not limited to this, and a case where a desired characteristic is satisfied in a desired frequency band without using the electrical length correction element is described. Of course, the electrical length correction element can be omitted. Furthermore, although the case where the electrical length correction element has a meander line shape has been described, the invention is not limited to this, and it is needless to say that the electrical length correction element may have a helical shape.

  In order to enable the antenna device to operate in a plurality of frequency bands, for example, both the 900 MHz band and the 2 GHz band, the electrical length of the one-push hinge 102, the electrical length correction element 103a, and the feeder line 103c is 900 MHz. The frequency is adjusted to be approximately ¼ wavelength, and the electrical lengths of the resonant element 103b and the feed line 103c are adjusted to be approximately ¼ wavelength at 2 GHz. In this case, due to the electromagnetic coupling between the resonant element 103b and the one-push hinge 102, the anti-resonance occurs in a frequency band between the 900 MHz band and the 2 GHz band. As a result, the impedance characteristic of the 2 GHz band may become a narrow band characteristic. In such a case, the open end of the resonance element 103b is higher than the open end of the sliding portion 102b by being arranged so as to protrude by D1. It is possible to widen the band side antenna characteristics. In particular, when the 900 MHz band, 1.7 GHz band, and 2 GHz band are covered, the impedance characteristics of the 1.7 GHz band may be greatly degraded by electromagnetic coupling between the resonant element and the one-push hinge. Of course, it can be expected that the 1.7 GHz band and the 2 GHz band will be covered at the same time.

  In FIG. 2, the portable wireless device 201 including the hinge-integrated antenna 101 of the present embodiment is connected so that the upper housing 202 and the lower housing 203 can be folded in two via the hinge portion 204. The display 205 for displaying information of the portable wireless device is disposed on the folded inner surface of the upper casing 202, and the sound hole portion 206 through which the other party's voice can be heard during a call is opposite to the upper hinge 204c of the upper casing 202. The key 207 for operating the buttons is disposed on the folded inner surface of the lower housing 203, and the microphone 208 is disposed near the lower end of the lower housing 203 on the opposite side of the hinge portion. The battery 209 is disposed on the surface of the lower housing 203 opposite to the key 207. An upper GND portion 210 is built in the upper housing 202 at a predetermined distance D2 from the hinge portion 204, and a lower GND portion 211 is built in the lower housing 203, and the lower GND A wireless circuit unit 212 is disposed on the unit 211. In this case, the lower hinges 204a and 204b of the hinge portion 204 are connected or integrally formed with the lower casing 203, and the upper hinge 204c is connected or integrally formed with the upper casing 202. Further, the fixed portion 102a of the hinge-integrated antenna 101 is fixedly connected to the inside of the lower hinge 204a, the sliding portion 102b is fixedly connected to the inside of the upper hinge 204c, and the antenna element 103 is connected to the lower casing 203. And is connected to the radio circuit unit 212 via the power feeding unit 213.

  Note that the predetermined distance D2 between the upper GND portion 210 and the hinge portion 204 is desirably 3 mm or more as an example. When the distance D2 is less than 3 mm, the electromagnetic coupling between the hinge-integrated antenna and the upper GND portion becomes strong, and the characteristics of the hinge-integrated antenna may change greatly between the open state and the closed state.

  In the present embodiment, D2 is set to 3 mm or more. However, the present invention is not limited to this. For example, when the desired band is narrow, D2 may be within 3 mm. Furthermore, it goes without saying that the hinge-integrated antenna and the upper GND portion may be electrically connected, but in this case, the effect of reducing the resonance frequency of the antenna when using the portable wireless device in an open state or a wideband Of course, the effect of reducing the influence of the human body during a call can be expected in addition to the effect of making it easier, but on the other hand, the performance of the hinge-integrated antenna deteriorates when used in a closed state, so it satisfies the desired characteristics It is preferable to combine with other antennas.

  In the portable wireless device configured as described above, when voice, data, images, and the like are transmitted, a signal converted into a high-frequency signal in the wireless circuit unit 212 is input to the hinge-integrated antenna 101 via the power feeding unit 213. When the signal is in the 900 MHz band, it is radiated as a radio wave from the feeder line 103c, the electrical length correction element 103a, and the one-push hinge 102 to the space. When the signal is in the 2 GHz band, the signal is radiated as a radio wave mainly from the feeder line 103 and the resonance element 103b. Next, when receiving voice, data, images, or the like, the 900 MHz band signal received by the one-push hinge 102, the electrical length correction element 103a, and the feed line 103c is transmitted to the wireless circuit unit 212 via the feed unit 104. On the other hand, a signal in the 2 GHz band received by the resonant element 103b and the feeder line 103c is inputted to the radio circuit unit 212 via the feeder unit 104, and each inputted high frequency signal is demodulated in the radio circuit unit 212. Is done.

  Thus, by operating the one-push hinge 102 as a part of the antenna, it is possible to significantly reduce the antenna occupation space as compared with the conventional antenna device. In particular, by operating the one-push hinge 102 as a part of the application antenna on the low frequency side, it is possible to shorten the length of the antenna in the longitudinal direction as compared with the conventional case. Electromagnetic effects such as cables can be reduced, and improvement in radiation efficiency can be expected. In addition, it is natural that the thickness of the lower casing in the portable wireless terminal can be reduced by forming the resonant element 103b and the feeder line 103c in a two-dimensional structure. In addition, by operating the resonant element as part of the application antenna on the high frequency side, it is possible to significantly reduce the size compared to conventional antenna elements, so the lower housing must be protruded near the hinge. Of course, the design will be improved.

  In addition, although the antenna apparatus in this embodiment demonstrated the case where it can respond to a some frequency band, it is not limited to this, and it cannot be overemphasized that it is applicable also to a single frequency band. For example, as shown in FIG. 3, the electrical length correction element 302 is electrically connected to the open end of the sliding portion 102b, thereby allowing resonance at a desired frequency band. In addition, the electrical length correction element 302 is not limited to the configuration shown in FIG. 3, and may be configured by a linear or plate-like element. For example, a meander line structure may be used as shown in FIG. That is natural.

(Second Embodiment)
FIG. 5 is a diagram illustrating a configuration of an antenna device according to the second embodiment of the present invention, and FIG. 6 is a diagram illustrating a configuration example of a portable wireless communication device including the antenna device of FIG.

  In FIG. 5, in the hinge integrated antenna 501 of this embodiment, the sliding portion 102b of the one-push hinge 102 is electrically connected to one end portion of the electrical length correction element 502a through the connection portion 502d, and the electrical length correction is performed. A resonant element 502b is connected to the other end of the element 502a. The connection point between the electrical length correction element 502a and the resonance element 502b is connected to the power feeding unit 104 via the power feeding line 502c. In this case, in order to enable the antenna device to operate in a plurality of frequency bands, for example, both the 900 MHz band and the 2 GHz band, the electrical length of the one-push hinge 102, the electrical length correction element 502a, and the feeder line 502c is 900 MHz. The electrical lengths of the resonant element 502b and the feeder line 502c are adjusted to be approximately ¼ wavelength at 2 GHz.

  In FIG. 6, in the portable wireless device 601 provided with the hinge integrated antenna 501 of the present embodiment, the wireless circuit unit 602 is disposed on the upper GND unit 210 inside the upper housing 202, and the hinge integrated antenna 501 is a power feeding unit. It is connected to the wireless circuit unit 602 through 603. In this case, the upper hinge 204c of the hinge portion 204 is connected to or integrally formed with the upper housing 202, and can stably supply power to the hinge-integrated antenna 501 even when the terminal is opened and closed. In other words, when the wireless circuit unit is disposed in the upper housing, the hinge-integrated antenna can be fed by the shortest path by providing a connecting portion at the sliding portion of the hinge-integrated antenna, and by a high-frequency cable or the like Expect to avoid losses.

  Although the case where the upper hinge 204c is integrally formed with the upper housing 202 has been described in the present embodiment, the present invention is not limited to this. For example, when the upper hinge 204c is integrally formed with the lower casing 203, it is a matter of course that the same effect can be expected if the wireless circuit unit is arranged in the lower casing.

(Third embodiment)
FIG. 7 is a diagram illustrating a configuration of an antenna device according to the third embodiment of the present invention, and FIG. 8 is a diagram illustrating a configuration example of a portable wireless communication device including the antenna device of FIG.

  In FIG. 7, the hinge-integrated antenna 701 of the present embodiment has the second configuration except that the sliding portion 102b of the one-push hinge 102 is electrically connected to the antenna element 702 via the capacitive power feeding portion 702d. It has the same configuration as the embodiment. FIG. 7B is a view of the hinge-integrated antenna 701 as viewed from the side, and a predetermined gap exists between the sliding portion 102b and the capacitive power feeding portion 702d. FIG. 7C is a block diagram of the hinge-integrated antenna 701 in the present embodiment, and the one-push hinge 102 and the antenna element 702 are connected via a capacitor 703 generated by a gap between the sliding portion 102b and the capacitive power feeding portion 702d. And are connected.

  In FIG. 8, in the portable wireless device 801 provided with the hinge integrated antenna 701 of this embodiment, the wireless circuit unit 212 arranged on the lower GND unit 211 is slid on the one push hinge 102 via the power feeding unit 802. It is electrically connected to the moving part 102b. In this case, since there is a gap between the capacitive power supply unit 702d and the one-push hinge 102, it is possible to always supply power even when the portable wireless device 801 is opened and closed. Good antenna characteristics can be realized in any state.

  In the present embodiment, the case where the resin-made upper hinge 204c is disposed between the sliding portion 102b and the capacitive power feeding portion 702d has been described. However, the present invention is not limited to this. Of course, either the material, the magnetic material, or the air layer may be disposed, and the relative permittivity and relative permeability of the material, the area of the capacitive power feeding part, the one push hinge and the capacitive feeding part It goes without saying that the capacity can be adjusted to an appropriate capacity depending on the distance.

  Note that although the case where the lower hinge 204a is integrally formed with the lower housing 203 has been described in the present embodiment, the present invention is not limited to this. For example, the same effect can be expected when the lower hinge 204a is integrally formed with the upper housing 202.

(Fourth embodiment)
FIG. 9 is a diagram illustrating a configuration of an antenna device according to the fourth embodiment of the present invention, and FIG. 10 is a diagram illustrating a connection example of a portable wireless device including the antenna device of FIG.

  In FIG. 9A, the lower hinge 901 made of resin is provided with a screw receiving portion 901b at the lower end of the lower hinge core portion 901a, and fitted to one side surface of the lower hinge core portion 901a to be connected to the upper hinge 204c. A joint portion 901c is provided. In FIG. 9B, the lower hinge 902 is provided with a through hole 902c whose both ends are opened on the side surface of the lower hinge core portion 902a made of resin, and the lower hinge 902 made of resin on the lower end surface of the lower hinge core portion 902a. The antenna element core part 902d is connected, a through hole 902e is provided near the end opposite to the lower hinge core part 902a of the antenna element core part 902d, and the metal screw receiving part 902b is provided in the antenna element core part 902d. And the lower hinge core part 902a so as to reach the through hole 902c. In this case, as shown in FIG. 9C, in a state where the hinge integrated antenna 101 and the lower hinge 902 are integrated, the screw receiving portion 902b also serves as the feeder line 103c. It is important that the length correction element 103a and the resonance element 103b are electrically connected. In this way, by using the screw receiving portion as a power supply line, the number of parts can be reduced, and the surface area of the power supply line can be increased and the current density can be reduced. Therefore, the SAR (Specific Absorption Ratio) is reduced. And the effect of reducing the deterioration of antenna characteristics when the head and fingers are close to each other during a call can be expected.

  In the present embodiment, the case where the lower hinge is made of resin has been described. However, the present invention is not limited to this, as long as the lower hinge is made of either a dielectric material or a magnetic material. It is important that the hinge-integrated antenna made of the product does not come into direct contact with the human head, fingers, or a metal desk. Of course, the same effect can be expected in these cases.

  In this embodiment, the case where the lower hinge is made of resin has been described. However, the present invention is not limited to this, and the upper hinge may be made of either a dielectric material or a magnetic material. Needless to say. In particular, there is a problem that the radiation efficiency is lowered in the conventional antenna device because the hinge portion is close to or in contact with the human head or cheek while the portable wireless device is open during a call. In such a case, the surface of the portion that becomes the display side with the portable wireless device opened in the upper hinge is made of a dielectric material or a magnetic material, so that the metal hinge-integrated antenna can be Needless to say, an effect of suppressing deterioration of antenna characteristics due to direct contact with a cheek or finger or a metal desk or the like can be expected.

  As shown in FIG. 10, after the hinge-integrated antenna 101 and the lower hinge 902 are connected, the sliding portion 102b of the one-push hinge 102 is fixed to the inside of the upper hinge 204c of the upper housing 202, and the lower The lower hinges 901 and 902 can be fixed to the lower casing 203 by screwing through the through holes 203a and 203b of the side casing 203. Obviously, by adopting such a connection method, the hinge-integrated antenna and the lower hinge can be integrally formed, which is suitable for mass production.

(Fifth embodiment)
FIG. 11 is a diagram illustrating a configuration of a portable wireless device including an antenna device according to the fifth embodiment of the present invention, and FIG. 12 is a specific block diagram of a circuit configuration of the antenna device of FIG. FIG.

  In FIG. 11, the portable wireless device 1101 having the hinge integrated antenna according to the present embodiment has a hinge integrated antenna 301 connected to the input of the matching circuit 1102 disposed inside the wireless circuit unit 212 via the power feeding unit 213. The output of the circuit 1102 has the same configuration as that of the first embodiment except that the output of the circuit 1102 is connected to the input of the tuner 1104 via the active amplifier circuit 1103.

  In FIG. 12, the hinge-integrated antenna of the present embodiment is connected to the series resonant circuit 1201 including a coil 1202 and a capacitor 1203 connected to the hinge-integrated antenna 301, and is shunt-connected between the output of the series resonant circuit 1201 and the ground. A coil 1204, a field effect transistor 1205 whose gate terminal is connected to the output of the coil 1204, a coil 1207 shunt-connected between the source terminal of the field effect transistor 1205 and the ground, and a drain terminal of the field effect transistor 1205. The power supply terminal 1206 and the tuner 1104 connected to the connection point between the drain terminal and the power supply terminal 1206 are used as components. In this case, although not shown, the power supply terminal 1206 is connected to a battery and supplies power to the field effect transistor 1205. Further, the hinge-integrated antenna functions as an antenna device that receives digital television broadcasting using the UHF band (470 MHz to 770 MHz), and the impedance characteristic of the hinge-integrated antenna 301 is capacitive in the vicinity of 470 MHz. In addition, the impedance characteristic of the field effect transistor 1205 is inductive in the vicinity of 470 MHz by the coil 1204, and has a relationship of substantially complex conjugate matching with the hinge integrated antenna, which is smaller than the wavelength of the hinge integrated antenna. Reception sensitivity can be improved.

  Note that the series resonance circuit 1201 operates as a bandpass filter that passes the UHF band and attenuates a 900 MHz band cellular phone signal, and the coil 1202 further increases the electrical length of the hinge-integrated antenna 301. Function as. As a result, in the UHF band, the impedance characteristic of the hinge-integrated antenna that is smaller than the wavelength can be made capacitive in the vicinity of 470 MHz, and inductive in the 770 MHz. In this case, the impedance characteristic of the field effect transistor 1205 is adjusted to be inductive in the vicinity of 470 MHz by the coil 1204 and at the same time to be capacitive in the vicinity of 770 MHz, and is substantially complex conjugate with the hinged integrated antenna in the vicinity of 470 MHz and 770 MHz. It is possible to realize a matching relationship. For this reason, the hinge-integrated antenna can operate in a wide band, and of course, it can be expected to satisfy the miniaturization of the antenna and the high sensitivity characteristics at the same time.

  When the hinge-integrated antenna and the field effect transistor have a substantially complex conjugate matching in the vicinity of 470 MHz and 770 MHz, and when the mismatch loss is small, the pass gain in the field effect transistor is increased in the vicinity of 470 MHz and 770 MHz. Therefore, by inserting the coil 1207, it is a matter of course that a special effect of reducing the pass gain in the vicinity of 470 MHz and 770 MHz in a frequency selective manner can be expected. In this case, the frequency characteristic of the pass gain of the field effect transistor becomes gentle, and at the same time, the reception sensitivity characteristic of the antenna device is maintained in a wide band, so that the stability of the active amplifier circuit is improved.

  Note that in this embodiment, a configuration example using a field effect transistor as an active amplifier circuit has been described. However, the present invention is not limited to this, and an amplifier circuit such as a bipolar transistor may be used if the noise is low. Of course, the effect of can be expected.

  Note that the wireless communication device according to the embodiment of the present invention is not limited to a mobile phone, and may be a notebook personal computer having a wireless communication function as long as it is a foldable terminal device that can be opened and closed by a one-push hinge. Needless to say, the present invention is applicable to any mobile radio communication apparatus.

  As described above in detail, according to the present invention, the one-push of the portable wireless device is provided by arranging the hinge-integrated antenna that allows the one-push hinge to function as a part of the antenna near the hinge portion of the two-fold portable wireless device. An antenna device that can simultaneously satisfy the open function and the antenna function, and a wireless communication device using the antenna device can be provided.

(A) The figure which shows the specific structural example of the hinge integrated antenna of 1st Embodiment, (b) Similarly the side view (A) The top view in the open state of the two-fold portable radio | wireless apparatus provided with the hinge integrated antenna of 1st Embodiment, (b) The side view similarly, (c) The side view in the closed state The figure which shows another structural example of the hinge integrated antenna of 1st Embodiment. The figure which shows another structural example of the hinge integrated antenna of 1st Embodiment. The figure which shows the specific structural example of the hinge integrated antenna of 2nd Embodiment. The top view in the open state of the two-fold type portable wireless apparatus provided with the hinge integrated antenna of 2nd Embodiment (A) The figure which shows the specific structural example of the hinge integrated antenna of 3rd Embodiment, (b) The side view similarly, (c) The circuit diagram (A) The top view in the open state of the two-fold portable radio | wireless apparatus provided with the hinge integrated antenna of 3rd Embodiment, (b) Similarly the side view (A) The figure which shows the specific structural example of the lower hinge shown in FIG. 2, (b) The figure which shows the specific structural example of a lower hinge similarly, (c) The hinge integrated antenna of 4th Embodiment A diagram showing a specific configuration example (A) The figure which shows the specific structural example of the upper side housing | casing shown in FIG. 2, (b) The figure which shows the connection state of the hinge integrated antenna of 4th Embodiment, and an upper side housing | casing, (c) It shows in FIG. A diagram showing a specific configuration example of the lower housing The top view in the open state of the folding portable radio | wireless apparatus provided with the hinge integrated antenna of 5th Embodiment The figure which shows the specific circuit structure of the antenna apparatus of 5th Embodiment. (A) Plan view in the open state of a conventional two-fold type portable wireless device, (b) A side view thereof, and (c) A diagram showing a specific configuration example of a conventional one-push hinge.

Explanation of symbols

101, 301, 401, 501, 701 Hinge integrated antenna 102, 1303 One push hinge 102a, 1303a Fixed portion 102b, 1303b Sliding portion 102c, 1303c Button portion 103, 502, 702 Antenna element 103a, 302, 402, 502a, 702a Electrical length correction element 103b, 502b, 702b Resonance element 103c, 502c, 702c, 1305 Feed line 103d, 502d Connection part 104, 213, 603, 802 Feed part 201, 601, 801, 1101, 1301 Portable wireless device 202 Upper housing 203, 1302 Lower casing 203a, 203b, 902c, 902e Through hole 204 Hinge part 204a, 204b, 901, 902 Lower hinge 204c Upper hinge 205 Display 2 6 Sound hole part 207 Key 208 Microphone 209 Battery 210 Upper GND part 211 Lower GND part 212,602 Radio circuit part 702d Capacity feeding part 703, 1203 Capacitors 901a, 902a Lower hinge core part 901b, 902b Screw receiving part 901c Fitting part 902d Antenna element core 1102 Matching circuit 1103 Active amplifier circuit 1104 Tuner 1201 Series resonance circuit 1202, 1204, 1207 Coil 1205 Field effect transistor 1206 Power supply terminal 1304 Built-in antenna

Claims (10)

An antenna device mounted on a portable terminal having a hinge portion that connects a first housing and a second housing,
The hinge part includes a one-push hinge made of metal including a fixed part, a sliding part, and a button part,
A power feeding unit formed on a ground layer inside the second housing;
A power feeding element connected to the power feeding unit and electrically connected to the one-push hinge ;
A resonant element connected to the power feeding element,
The feed element and the one-push hinges and to function as the antenna of the first frequency band using Rutotomoni, functions as the feed element and the resonant element and the antenna of the higher second frequency band than the first frequency band using An antenna device characterized in that multiband communication is realized . The antenna device according to claim 1, wherein the power feeding unit is electrically connected to the fixing unit via the power feeding element. The antenna device according to claim 1, wherein the resonance element is disposed along the hinge portion, and an open end of the resonance element protrudes from the one-push hinge. An antenna device mounted on a portable terminal having a hinge portion that connects a first housing and a second housing,
The hinge portion includes a first hinge portion fixedly connected to the first housing and a second hinge portion fixedly connected to the second housing, as constituent elements.
The second hinge part is fixedly connected to the fixing part of the one-push hinge having a fixing part, a sliding part, and a button part as constituent elements,
The sliding portion is fixedly connected to the first hinge portion,
A power feeding unit formed in a ground layer inside the first housing;
A power feeding element connected to the power feeding portion and electrically connected to the sliding portion ;
A resonant element connected to the power feeding element,
The feed element and the one-push hinges and to function as the antenna of the first frequency band using Rutotomoni, functions as the feed element and the resonant element and the antenna of the higher second frequency band than the first frequency band using An antenna device characterized in that multiband communication is realized . An antenna device mounted on a portable terminal having a hinge portion that connects a first housing and a second housing,
The hinge part includes a one-push hinge made of metal including a fixed part, a sliding part, and a button part,
A power feeding unit formed on a ground layer inside the second housing;
A power feeding element connected to the power feeding unit and electrically connected to the one-push hinge ;
A resonant element connected to the power feeding element,
By using the feeding element and the one push hinge as an antenna in the first frequency band, and using the feeding element and the resonance element as a second frequency band antenna higher than the first frequency band, An amplifying circuit for realizing band communication and amplifying a high-frequency signal connected to the power feeding unit and output from the antenna of the first frequency band;
A ground terminal for grounding the amplifier circuit at a high frequency;
An antenna device, wherein the antenna device is connected to an output side of the amplifier circuit and demodulates an output signal from the amplifier circuit. The antenna device according to claim 1, wherein the one-push hinge is capacitively fed via either a dielectric material or a magnetic material. The antenna device includes an electrical length correction element that electrically connects the one-push hinge and the resonance element,
The antenna apparatus according to claim 1, wherein the electrical length correction element has a meander shape or a helical shape. The antenna apparatus according to claim 1, wherein the electrical length correction element includes an electrical length correction element at a tip portion of the sliding portion. 9. The antenna device according to claim 1, wherein a surface portion of the hinge portion is made of either a dielectric material or a magnetic material. 10. A portable wireless device comprising the antenna device according to any one of 1 to 9 above.

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