WO2012081610A1

WO2012081610A1 - Wireless device

Info

Publication number: WO2012081610A1
Application number: PCT/JP2011/078884
Authority: WO
Inventors: 入山　明浩; 武部　裕幸; 俊範近藤
Original assignee: シャープ株式会社
Priority date: 2010-12-15
Filing date: 2011-12-14
Publication date: 2012-06-21

Abstract

A wireless communication device (1) comprises a connector (10) to which an earphone cable (50) can be connected, and a substrate on which a ground pattern and wiring pattern are formed, wherein a signal terminal (11) is directly or indirectly supplied with power from a wireless circuit (17), and wherein, on the substrate, at least the ground pattern is not disposed on an upper layer and lower layer of the substrate nor in the interior thereof, relative to at least a part of an installation region of the connector (10) and a formation region of a first wiring connected to the signal terminal (11).

Description

transceiver

The present invention relates to a wireless device.

In recent years, wireless devices (mobile wireless communication devices) typified by mobile phones and the like have been equipped with, for example, a viewing function such as a radio broadcast and a television broadcast, a GPS function, etc. in addition to a call function. Yes. However, since an antenna corresponding to each function is required, the number of antennas increases as the number of functions increases. Wireless devices are required to be small and thin, and the design is very much considered, so that the arrangement of antennas is required.

Therefore, a technique for using an external component connected to a radio as a part of an antenna has been proposed. For example, in the technique described in Patent Document 1, an earphone cable connected to a receiver is operated as an antenna by supplying power to a signal line and a GND (ground) of an earphone connector. Such an earphone antenna has a function as an earphone that outputs sound and a function as an antenna that receives radio waves (in particular, a VHF (Very High Frequency) band or a UHF (Ultra High Frequency) band).

Japanese Patent Publication “JP 2008-92265 A (published April 17, 2008)”

However, the conventional radio using the earphone antenna has a problem that the antenna performance (antenna characteristics) is greatly deteriorated when the earphone antenna is not connected.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to obtain good antenna performance when connecting parts such as an earphone cable, and to ensure antenna performance even when parts are not connected, The object is to provide a wireless device capable of communication.

In order to solve the above-described problem, the wireless device of the present invention includes a connector to which a component that inputs or outputs a first frequency signal can be connected, and transmits and receives a wireless signal having a second frequency different from the first frequency. A radio device is mounted with a signal processing circuit for processing the first frequency signal, a radio circuit for processing the second frequency radio signal, the connector, and a ground pattern and a wiring pattern. And the connector includes at least one signal terminal electrically connected to the signal processing circuit and a ground terminal electrically connected to the ground pattern, and the wiring pattern Includes a first wiring connected to the signal terminal and a second wiring connected to the ground terminal, the signal terminal being directly or indirectly Power is supplied from a circuit, and in the first board, at least the ground pattern is provided in an upper layer, a lower layer, and an inside of the first board with respect to at least a part of the connector mounting area and the first wiring forming area. Is not arranged.

According to the above configuration, assuming that the signal terminal and the ground terminal are separated from the signal processing circuit and the ground pattern at the second frequency by, for example, a filter, a connector (including the signal terminal and the ground terminal), and Since the wiring connected to the connector is reduced in coupling with the ground pattern as compared with the case where they are overlapped with the ground pattern, the wiring can be contributed to radiation. Therefore, since the signal terminal is supplied with power from the wireless circuit in this state, the connector can operate as an antenna for transmitting and receiving wireless signals regardless of the connection of components.

Therefore, good antenna performance can be ensured by the connector both when the component is not connected and when it is connected. Therefore, it is possible to provide a radio device that not only provides good antenna characteristics when connecting components, but also ensures antenna performance and enables communication even when components are not connected.

In order to solve the above-described problem, the wireless device of the present invention includes a connector to which a component that inputs or outputs a first frequency signal can be connected, and transmits and receives a wireless signal having a second frequency different from the first frequency. A radio device, a signal processing circuit for processing the first frequency signal, a radio circuit for processing the second frequency radio signal, a first board on which the connector is mounted, the signal processing circuit, and The wireless circuit is mounted, and a second substrate on which a ground pattern is formed is provided. The first substrate is connected to the second substrate by a connection component, and the connector is connected via the connection component. At least one signal terminal electrically connected to the signal processing circuit, and a ground terminal electrically connected to the ground pattern via the connection component, and the signal terminal , Via the connection part is electrically connected to the radio circuit, it is characterized in that it is directly or indirectly fed from the radio circuit.

According to the above configuration, the ground terminal is electrically connected to the ground pattern formed on the second substrate via the connection component, and the ground pattern is formed on the first substrate on which the connector is mounted. It has not been. Therefore, if the signal terminal and the ground terminal are separated from the signal processing circuit and the ground pattern at the second frequency by, for example, a filter, the signal terminal and the ground terminal are connected to the connector (including the signal terminal and the ground terminal) and the connector. Since the wiring does not couple with the ground pattern, it can contribute to radiation well. Therefore, since the signal terminal is supplied with power from the wireless circuit in this state, the connector can operate satisfactorily as an antenna for transmitting and receiving wireless signals regardless of the connection of components.

In order to solve the above-described problem, the wireless device of the present invention includes a connector to which a component that inputs or outputs a first frequency signal can be connected, and transmits and receives a wireless signal having a second frequency different from the first frequency. A radio device, a signal processing circuit for processing the first frequency signal, a radio circuit for processing the second frequency radio signal, a first board on which the connector is mounted, the signal processing circuit, and The wireless circuit is mounted, and a second substrate on which a ground pattern is formed is provided. The first substrate is connected to the second substrate by a connection component, and the connector is connected via the connection component. At least one signal terminal electrically connected to the signal processing circuit; and a ground terminal electrically connected to the ground pattern via the connection component; Terminals, via the connection part is electrically connected to the radio circuit, is characterized in that it is directly or indirectly fed from the radio circuit.

According to the above configuration, the ground terminal is electrically connected to the ground pattern formed on the second substrate via the connection component, and the ground pattern is formed on the first substrate on which the connector is mounted. It has not been. Therefore, if the signal terminal and the ground terminal are separated from the signal processing circuit and the ground pattern at the second frequency by, for example, a filter, the signal terminal and the ground terminal are connected to the connector (including the signal terminal and the ground terminal) and the connector. Since the wiring does not couple with the ground pattern, it can contribute to radiation well. Therefore, since the ground terminal is supplied with power from the wireless circuit in this state, the connector can operate well as an antenna for transmitting and receiving wireless signals regardless of the connection of components.

As described above, in the wireless device of the present invention, the signal terminal of the connector is directly or indirectly supplied with power from the wireless circuit, and in the first substrate, at least of the connector mounting region and the first wiring forming region. Since at least a ground pattern is not arranged in the upper layer, the lower layer, and the inside of the first substrate with respect to a part, the connector and the wiring connected thereto can contribute to the emission of a radio signal.

The radio of the present invention includes a first board on which a connector is mounted, and a second board on which a signal processing circuit and a radio circuit are mounted and a ground pattern is formed. And the connector is electrically connected to the ground pattern via the connection component and the signal terminal electrically connected to the signal processing circuit via the connection component. The signal terminal is electrically connected to the wireless circuit via the connection component, and is fed directly or indirectly from the wireless circuit.

The wireless device of the present invention includes a first substrate on which a connector is mounted, and a second substrate on which a signal processing circuit and a wireless circuit are mounted and a ground pattern is formed. The connector is connected to the second substrate by a connection component, and the connector is electrically connected to the ground pattern via the connection component and a signal terminal electrically connected to the signal processing circuit via the connection component. The ground terminal is electrically connected to the wireless circuit via the connection component, and is directly or indirectly supplied with power from the wireless circuit.

Therefore, the ground pattern is not formed on the first board on which the connector is mounted, and the connector and the wiring connected thereto can be made to contribute well to radio signal radiation.

Therefore, good antenna performance can be ensured by the connector both when the component is not connected and when it is connected. Therefore, it is possible to provide a radio device capable of providing good antenna performance when connecting a component such as an earphone cable, and ensuring the antenna performance even when the component is not connected, and enabling communication.

It is a block diagram which shows 1st Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 2nd Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 3rd Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 4th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 5th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 6th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 7th Embodiment of the radio | wireless machine in this invention. It is a figure which shows the effect when performing conjugate matching. It is a block diagram which shows 8th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 9th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 10th Embodiment of the radio | wireless machine in this invention. It is a block diagram which shows 11th Embodiment of the radio | wireless machine in this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a schematic configuration of a wireless communication device having a television viewing function according to an embodiment of a wireless device in the present invention. It is a block diagram of the radio | wireless communication apparatus of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a schematic configuration of a wireless communication device having a television viewing function and a GPS function according to an embodiment of a wireless device in the present invention. It is a block diagram of the radio | wireless communication apparatus of FIG.

Embodiments of the present invention will be described with reference to the drawings as follows. The configuration other than that described in each embodiment is the same as that of the above-described embodiment. Further, for convenience of explanation, in each embodiment, members having the same functions as those shown in the drawings of the above-described embodiments are denoted by the same reference numerals and description thereof is omitted.

[Embodiment 1]
FIG. 1 is a block diagram illustrating a configuration example of the wireless communication device 1 according to the present embodiment. The wireless communication device 1 is a device that can control the earphone cable 50 connected to the connector 10 so that the original function of the earphone cable 50 is performed, and can use the connector 10 and the earphone cable 50 as an antenna. .

As shown in FIG. 1, the wireless communication device 1 includes a connector 10 having a signal terminal 11 and a GND terminal (ground terminal) 12, an audio circuit 16 (signal processing circuit), and a wireless circuit 17. , A structure mounted (arranged) on a substrate (first substrate) (not shown). Reference numeral 18 denotes a GND (ground) of the substrate. Reference numeral 19 denotes a feeding point when feeding power from the radio circuit 17 to the signal terminal 11.

The connector 10 has a configuration in which a signal terminal 11 and a GND terminal 12 made of metal are inserted into an insulating resin body. The signal terminal 11 and the GND terminal 12 are insulated from each other. The connector 10 only needs to include at least the signal terminal 11 and the GND terminal 12, and other configurations and shapes are not limited.

The connector 10 has an earphone cable 50 (part) having a plug 51 that can be inserted and removed (connected). The earphone cable 50 includes, for example, a conductor (audio signal line) for transmitting an audio signal and a GND potential conductor (GND line) while being insulated from each other. In the present embodiment, it is assumed that the earphone cable 50 includes a right-ear audio signal line, a left-ear audio signal line, and a GND line. Note that the earphone cable 50 only needs to have a conventional general configuration, and thus the description thereof is omitted here.

The signal terminal 11 is a connection part (relay point) for electrically connecting the audio signal line of the earphone cable 50 to the audio circuit 16, and is provided with two (shown collectively in the figure). One signal terminal 11 is electrically connected to the audio circuit 16. The other signal terminal 11 is electrically connected to the audio circuit 16. When the plug 51 is inserted into the connector 10, the signal terminal 11 is electrically connected to the audio signal line of the earphone cable 50. In addition, since the signal terminal 11 should just be provided corresponding to the audio | voice signal line | wire of the earphone cable 50, at least 1 should just be provided.

The GND terminal 12 is a connection part (relay point) for electrically connecting the GND line of the earphone cable 50 to the board GND 18, and one GND terminal 12 is provided. The GND terminal 12 is electrically connected to the substrate GND18. When the plug 51 is inserted into the connector 10, the GND terminal 12 is electrically connected to the GND line of the earphone cable 50.

The connector 10 and the earphone cable 50 operate as an antenna that transmits and receives high-frequency (for example, VHF band, UHF band, etc.) radio signals (high-frequency signals, RF signals). Here, hereinafter, a band in which an antenna constituted by the connector 10 and the earphone cable 50 operates is referred to as a “communication frequency” (second frequency).

The audio circuit 16 is a circuit that controls the audio output of the earphone cable 50. The audio circuit 16 processes the audio signal at a frequency different from the communication frequency. Hereinafter, the band used by the audio circuit 16 is referred to as “audio frequency” (first frequency). The earphone cable 50 inputs or outputs an audio signal having an audio frequency.

The wireless circuit 17 is a circuit that controls wireless communication using the connector 10 and the earphone cable 50 as an antenna. The radio circuit 17 is electrically connected to the signal terminal 11 and supplies power to the signal terminal 11 at a communication frequency.

A ground pattern, which is the substrate GND18, and a wiring pattern are formed on the substrate. The substrate may have either a single layer structure or a multilayer structure, and the ground pattern and the wiring pattern may be arranged in any of the upper layer, the lower layer, and the inside of the substrate. The wiring pattern includes a signal wiring (first wiring) connected to the signal terminal 11 and a GND wiring (second wiring) connected to the GND terminal 12. The signal wiring is a wiring for connecting to the audio circuit 16 and the radio circuit 17 respectively. The GND wiring is a wiring for connecting to the substrate GND18. The board GND 18 is arranged so as not to overlap at least a part (at least a part of the range X in FIG. 1) of the connector 10 mounting area and the signal wiring forming area.

According to the above configuration, the board GND 18 is not arranged in the upper layer, the lower layer, and the inside of the board with respect to at least a part of the mounting area of the connector 10 and the signal wiring forming area. Therefore, if the signal terminal 11 and the GND terminal 12 are separated from the audio circuit 16 and the board GND 18 at the communication frequency by a filter or the like (floating in an RF manner), for example, they are connected to the connector 10 and the connector 10. The wiring is in a state that can contribute to radiation because the coupling with the substrate GND 18 is reduced as compared with the case where the wiring overlaps the substrate GND 18. Therefore, since the signal terminal 11 is supplied with power from the wireless circuit 17 in this state, the connector 10 can operate as an antenna for transmitting and receiving wireless signals regardless of the connection of the earphone cable 50.

That is, when the earphone cable 50 is not connected to the connector 10, the “connector itself” operates as an antenna. This is because power is supplied only to the signal terminal 11, but the connector 10 is small, so that the connector itself can be used as an antenna. A in FIG. 1 indicates an antenna when the earphone cable is not connected. More specifically, part of the signal wiring and part of the GND wiring also operate as the antenna A. The antenna A can ensure the antenna performance to the extent that there is no problem in radio wave reception.

On the other hand, when the earphone cable 50 is connected to the connector 10, the “connector + earphone cable” operates as an antenna. B in FIG. 1 indicates an antenna when the earphone cable is connected. Similarly to the antenna A, also in the antenna B, a part of the signal wiring and a part of the GND wiring operate as an antenna. Compared to the case where only the earphone cable is used as an antenna like the conventional earphone antenna, the antenna B is slightly deteriorated because the base portion of the antenna is buried in the casing (surrounded by the substrate GND18 or the like). Since the earphone cable 50 operates as an antenna, a sufficient antenna volume can be secured, so that very good antenna performance can be obtained.

Therefore, good antenna performance can be ensured by the connector 10 both when the earphone cable 50 is not connected and when it is connected. Therefore, in the wireless communication device 1, not only good antenna characteristics can be obtained when the earphone cable is connected, but also antenna performance can be ensured and communication can be performed even when the earphone cable is not connected.

In the wireless communication device 1, the input impedance of the antenna changes between when the earphone cable 50 is not connected and when it is connected. Specifically, when the earphone cable is not connected, the impedance distribution is widened, but when the earphone cable is connected, transition is made to converge to a certain impedance. In anticipation of this transition, it is desirable to adjust the antenna input impedance at the time of non-connection so that a large mismatch with the circuit side impedance does not occur at the time of connection.

In addition, the wiring pattern may include other wiring that is not connected to the connector 10 in addition to the signal wiring and the GND wiring. In this case, the other wiring is arranged so as not to overlap at least a part (at least a part of the range X in FIG. 1) of the connector 10 mounting area and the signal wiring forming area. . That is, on the substrate, neither the substrate GND 18 nor other wiring is arranged in the upper layer, the lower layer, and the inside of the mounting region of the connector 10 and at least a part of the signal wiring formation region.

The wireless communication device 1 can be applied to an electronic device equipped with a wireless communication function, particularly a small and portable wireless device. For example, a mobile phone, a portable television, a portable radio, and a PDA with a wireless communication function. It can be realized as such. The configuration shown in FIG. 1 is a main configuration related to the antennas A and B described above, and the wireless communication device 1 has other general configurations (for example, a display unit and an input device) not shown. You may have. Furthermore, in addition to the wireless communication function using the antennas A and B, the wireless communication device 1 can be appropriately mounted with other functions, and other antennas may be mounted.

For example, when the wireless communication device 1 is a mobile phone having a call function, a TV viewing function, and a GPS function, a call antenna and a GPS antenna are individually provided, and the above-described antenna for TV viewing is used as the antenna described above. The antennas A and B by the connector 10 and the earphone cable 50 can be used.

In addition, the connector 10 of the wireless communication device 1 is configured to be connected to the earphone cable 50 having the plug 51. However, the present invention is not limited to this, and the connector 10 includes other exterior components (components) that can be used as an antenna. It may be connected. As the exterior component, for example, an earphone microphone, USB (registered trademark), HDMI (High-Definition Multimedia Interface) (registered trademark) cable, or the like can be used. Here, the exterior component is a component that inputs or outputs a signal having a specific frequency and performs an original function mounted on the exterior component. The audio circuit 16 may be changed to a signal processing circuit that performs signal processing in accordance with the above-described exterior component.

Here, we will supplement the reason why the connector 10 operates as an antenna. In fact, most of the metal part of the connector 10 contributes to the antenna radiation of the connector 10. However, in this embodiment, power is supplied only to the signal terminal 11 which is a part of the metal part. On the other hand, paying attention to the configuration of the connector 10, since the connector 10 is small, the signal terminal 11, the GND terminal 12, and other metal parts are mostly arranged close to each other. Therefore, these metal parts are capacitively coupled to each other and can be viewed as being integrated at the communication frequency using the antenna. Therefore, even if the power is supplied only to the signal terminal 11, the connector 10 itself can be operated as an antenna.

In addition, although the signal terminal 11, the GND terminal 12, and other metal parts are arranged apart from each other, when it is desired to integrate them at a communication frequency, for example, by connecting capacitors between the metal parts with a capacitor (RF May be capacitively coupled. The capacitor can be provided on a substrate, for example. Alternatively, the signal terminal 11 and the GND terminal 12 may be integrated by supplying power. This configuration will be described in an embodiment described later.

Further, when they are arranged apart from each other as described above, for example, there may be a metal part that is not capacitively coupled to the signal terminal 11 even when power is supplied to the signal terminal 11. That is, the connector 10 may be provided with a terminal (conductor) that is not capacitively coupled to a terminal that operates as an antenna. However, in the wireless communication device 1, since power is supplied in consideration of the antenna length and the antenna volume in order to ensure the necessary antenna performance, the antenna performance is affected even in the above case. The connector 10 can be operated as an antenna.

In this way, the connector 10 has an antenna in both a configuration in which the entire metal portion is integrated at a communication frequency using the antenna and a configuration in which there is a metal portion that is not integrated with the metal portion to be fed. Is functioning as

The wireless communication device 1 described above has a configuration in which power is supplied to the signal terminal 11. However, power supply from the wireless circuit 17 to the signal terminal 11 may be performed directly or indirectly. May be. That is, the feeding point 19 may be disposed on the signal terminal 11 or may be disposed on a conductor (for example, signal wiring) connected to the signal terminal 11.

[Embodiment 2]
FIG. 2 is a block diagram illustrating a configuration example of the wireless communication device 2 according to the present embodiment. As illustrated in FIG. 2, the wireless communication device 2 includes a configuration in which a wireless circuit 17 is electrically connected to the GND terminal 12 in addition to the configuration of the wireless communication device 1 illustrated in FIG. 1.

The radio circuit 17 supplies power to the GND terminal 12 at the communication frequency. Reference numeral 20 in FIG. 2 denotes a power supply point when power is supplied from the wireless circuit 17 to the GND terminal 12. A wiring for connecting the GND terminal 12 and the radio circuit 17 is a GND wiring. The board GND 18 is arranged so as not to overlap at least a part (at least part of the range Y in FIG. 2) of the connector 10 mounting area, the signal wiring forming area, and the GND wiring forming area. Yes.

In the wireless communication device 2, the connector 10 (including the signal terminal 11 and the GND terminal 12), the signal wiring, and the GND wiring are reduced in coupling with the substrate GND 18 as compared with the case where they are overlapped with the substrate GND 18. Therefore, it is in a state that can contribute to radiation. Therefore, since the signal terminal 11 and the GND terminal 12 are fed from the radio circuit 17 in this state, regardless of the connection of the earphone cable 50, the signal terminal 11 and the GND terminal 12 are integrated to satisfactorily connect the connector 10 to the antenna. It becomes possible to operate as.

Note that the power supply from the radio circuit 17 to the GND terminal 12 may be performed directly or indirectly. That is, the feeding point 20 may be disposed on the GND terminal 12 or may be disposed on a conductor (for example, GND wiring) connected to the GND terminal 12.

[Embodiment 3]
FIG. 3 is a block diagram illustrating a configuration example of the wireless communication device 3 according to the present embodiment. As shown in FIG. 3, in addition to the configuration of the wireless communication device 2 shown in FIG. 2, the wireless communication device 3 includes an RF blocking filter 13 (first filter), an RF blocking filter 14 (first filter), and An RF blocking filter 15 (first filter) is provided. The RF blocking filters 13 to 15 are mounted on the substrate.

RF blocking filters 13 to 15 are filters that block communication frequency signals. In the wireless communication device 3, one of the two signal terminals 11 is electrically connected to the audio circuit 16 via the RF blocking filter 13, and the other signal terminal 11 is connected to the RF blocking filter 14. Is electrically connected to the audio circuit 16. The GND terminal 12 is electrically connected to the substrate GND 18 via the RF blocking filter 15. When the number of signal terminals 11 increases or decreases, it is provided for each transmission line between the signal terminals 11 and the audio circuit 16. Note that the RF blocking filters 13 to 15 need only have a conventional general configuration, and thus the description thereof is omitted here.

The board GND 18 is arranged so as not to overlap at least a part (at least a part of the range Z in FIG. 3) of the connector 10 mounting area, the signal wiring forming area, and the GND wiring forming area. Yes. The signal wiring referred to here is each wiring between the signal terminal 11, the RF blocking filters 13 and 14 (specifically, the land on the connector 10 side of the RF blocking filters 13 and 14), and the feeding point 19. is there. The GND wiring is a wiring between the GND terminal 12, the RF blocking filter 15 (specifically, the land on the connector 10 side of the RF blocking filter 15) and the feeding point 20.

According to the above configuration, the RF blocking filters 13 to 15 can easily separate the signal terminal 11 and the GND terminal 12 from the audio circuit 16 and the board GND 18 at the communication frequency (floating in an RF manner). . Therefore, the connector 10, the signal wiring, and the GND wiring can be made to contribute to radiation, and the connector 10 can be favorably operated as an antenna.

In other words, when the earphone cable 50 is not connected to the connector 10, the connector 10, the signal wiring (the signal terminal 11, the RF blocking filters 13 and 14, and the feeding point 19 are connected as shown by A in FIG. 3. And the GND wiring (the wiring between the GND terminal 12 and the RF blocking filter 15 and the feeding point 20) operate as the antenna A.

On the other hand, when the earphone cable 50 is connected to the connector 10, as shown by B in FIG. 3, the earphone cable 50, the connector 10, the signal wiring (the signal terminal 11, the RF blocking filters 13, 14 and the feeding point) 19) and GND wiring (wiring between the GND terminal 12, the RF blocking filter 15, and the feeding point 20) operates as the antenna B.

In the present embodiment, the wireless communication device 3 including the RF blocking filters 13 to 15 in addition to the configuration of the wireless communication device 2 illustrated in FIG. 2 has been described. However, the wireless communication device 1 illustrated in FIG. A configuration in which RF blocking filters 13 and 14 are added to the configuration is also possible.

[Embodiment 4]
FIG. 4 is a block diagram illustrating a configuration example of the wireless communication device 4 according to the present embodiment. As shown in FIG. 4, the wireless communication device 4 is different from the wireless communication device 3 shown in FIG. 3 in the arrangement of the board GND 18.

In other words, in the wireless communication device 4, the board GND 18 does not overlap with all the areas (range W in FIG. 4) of the connector 10 mounting area, the signal wiring forming area, and the GND wiring forming area. Is arranged. The signal wiring referred to here is each wiring between the signal terminal 11, the RF blocking filters 13 and 14, and the feeding point 19. The GND wiring is a wiring between the GND terminal 12, the RF blocking filter 15 and the feeding point 20.

According to the above configuration, the coupling between the connector 10 (including the signal terminal 11 and the GND terminal 12), the signal wiring, the GND wiring, and the RF blocking filters 13 to 15 and the substrate GND 18 is further reduced. The antenna volume (the volume of the part contributing to radiation) is further increased. Therefore, it is possible to further improve the antenna performance when the earphone cable is not connected.

[Embodiment 5]
FIG. 5 is a block diagram illustrating a configuration example of the wireless communication device 5 according to the present embodiment. As illustrated in FIG. 5, the wireless communication device 5 includes an extension conductor 21 in addition to the configuration in which the RF blocking filters 13 and 14 are added to the configuration of the wireless communication device 1 illustrated in FIG. 1.

The extension conductor 21 is made of a long conductor and is provided on the substrate. The extension conductor 21 is connected to the signal terminal 11 in a direct current manner and electrically connected to the radio circuit 17. The feeding point 19 is disposed on the extension conductor 21 (or may be a conductor connected to the extension conductor 21), and the extension conductor 21 is fed from the radio circuit 17. The substrate GND 18 is arranged so as not to overlap at least a part of the arrangement region of the extension conductor 21 or the entire arrangement region of the extension conductor 21.

In the wireless communication device 5, since the extension conductor 21 is connected to the signal terminal 11 in a DC manner, the area of the signal terminal 11, that is, the conductor to be fed increases. Therefore, when the earphone cable is not connected, the “connector + extension conductor” (antenna A in FIG. 5) is the antenna, and when the earphone cable is connected, the “connector + extension conductor + earphone cable” (antenna B in FIG. 5) is the antenna. Operate. Therefore, since the antenna volume is increased, it is possible to improve the antenna performance when connected and when not connected.

In FIG. 5, as indicated by a broken line between the GND terminal 12 and the wireless circuit 17, power may be supplied from the wireless circuit 17 to the GND terminal 12 also in the wireless communication device 5. When power is supplied to the GND terminal 12, an extension conductor 21 can be provided between the GND terminal 12 and the power supply point 20 as appropriate, similarly to the signal terminal 11.

[Embodiment 6]
FIG. 6 is a block diagram illustrating a configuration example of the wireless communication device 6 according to the present embodiment. As illustrated in FIG. 6, the wireless communication device 6 includes a filter 22 (second filter) in addition to the configuration of the wireless communication device 5 illustrated in FIG. 5.

The filter 22 is a filter that cuts off a signal having a frequency (third frequency) different from the communication frequency and the audio frequency. The filter 22 is provided in a path connecting the signal terminal 11 and the extension conductor 21. Note that the filter 22 only needs to have a conventional general configuration, and a description thereof will be omitted here.

In the wireless communication device 6, since the filter 22 is provided, the extension conductor 21 can be operated as an antenna of another communication system (antenna C in FIG. 6). Therefore, the number of antennas that can be used at the same time increases, so that multiple functions can be achieved. Further, the antenna elements are shared by the antennas A and B and the antenna C, which contributes to the miniaturization of the wireless communication device 6.

[Embodiment 7]
FIG. 7 is a block diagram illustrating a configuration example of the wireless communication device 7 according to the present embodiment. As shown in FIG. 7, the wireless communication device 7 includes a conjugate matching circuit 23 (first conjugate matching circuit) in addition to the configuration in which the RF blocking filters 13 and 14 are added to the configuration of the wireless communication device 1 shown in FIG. It has.

The conjugate matching circuit 23 is an impedance adjustment circuit that matches the input impedance of the antenna A (signal terminal 11 side) and the input impedance of the radio circuit 17 (radio circuit 17 side) so as to be complex conjugate. That is, the conjugate matching circuit 23 is a matching element having an input impedance that is a complex conjugate of the antenna impedance when the earphone cable is not connected. The conjugate matching circuit 23 is provided in a power feeding path between the signal terminal 11 fed from the radio circuit 17 and the radio circuit 17 (that is, a power feeding path from the radio circuit 17 to the feeding point 19). Note that the conjugate matching circuit 23 only needs to have a conventional general configuration, and a description thereof is omitted here.

The antenna element is relatively small when the earphone cable is not connected. For this reason, since the antenna A has a high Q value and impedance fluctuation within a desired band may increase, a mismatch with the characteristic impedance (for example, 50Ω) of the transmission line including the radio circuit 17 may occur. .

On the other hand, in the wireless communication device 7, since the matching between the antenna A and the wireless circuit 17 is satisfactorily performed by providing the conjugate matching circuit 23, the antenna performance when the earphone cable is not connected is improved. Is possible. This effect is shown in FIG. From FIG. 8, it can be seen that a wider band can be secured especially during conjugate matching, and the band edge of the desired band is improved.

Note that, as indicated by a broken line between the GND terminal 12 and the wireless circuit 17 in FIG. 7, the wireless communication device 7 may also supply power to the GND terminal 12 from the wireless circuit 17. When power is supplied to the GND terminal 12, a conjugate matching circuit 23 can be provided between the power supply point 20 and the radio circuit 17 as appropriate, similarly to the signal terminal 11.

[Embodiment 8]
FIG. 9 is a block diagram illustrating a configuration example of the wireless communication device 8 according to the present embodiment. As shown in FIG. 9, the wireless communication device 8 includes an amplifier circuit 24 in addition to the configuration in which the RF blocking filters 13 and 14 are added to the configuration of the wireless communication device 1 shown in FIG. 1. The amplifier circuit 24 is a general amplifier circuit that amplifies an input signal. The amplifier circuit 24 is provided in a power feeding path between the signal terminal 11 fed from the radio circuit 17 and the radio circuit 17.

Since the wireless communication device 8 is provided with the amplification circuit 24, it is possible to amplify the wireless signal received by the antennas A and B. Therefore, even when the reception power of the antenna is low, The received power (input power) can be improved.

In addition, as shown between the GND terminal 12 and the wireless circuit 17 in FIG. 9 by a broken line, the wireless communication device 8 may also supply power to the GND terminal 12 from the wireless circuit 17. When power is supplied to the GND terminal 12, an amplifier circuit 24 can be provided between the power supply point 20 and the radio circuit 17 as appropriate, similarly to the signal terminal 11.

[Embodiment 9]
FIG. 10 is a block diagram illustrating a configuration example of the wireless communication device 9 according to the present embodiment. As shown in FIG. 10, the wireless communication device 9 includes a conjugate matching circuit 23 ′ (second conjugate matching circuit) in addition to the configuration of the wireless communication device 8 shown in FIG. The conjugate matching circuit 23 ′ has a function equivalent to that of the conjugate matching circuit 23, and a feeding path between the signal terminal 11 fed from the radio circuit 17 and the amplification circuit 24 (that is, from the amplification circuit 24 to the feeding point 19). Provided in the power supply path). Thereby, the conjugate matching circuit 23 ′ matches the input impedance of the antenna A (signal terminal side) and the input impedance of the amplifier circuit 24 (amplifier circuit side) so as to be complex conjugate.

In the wireless communication device 9, since the impedance matching between the antenna A and the amplifier circuit 24 is satisfactorily performed by providing the conjugate matching circuit 23 ′, it is possible to improve the antenna performance when the amplifier circuit is used. It becomes.

[Embodiment 10]
FIG. 11 is a block diagram illustrating a configuration example of the wireless communication device 30 according to the present embodiment. As illustrated in FIG. 11, the wireless communication device 30 includes a switching determination unit 25 in addition to the configuration of the wireless communication device 7 illustrated in FIG. 7.

The switching determination unit 25 is electrically connected to the conjugate matching circuit 23 and switches presence / absence of matching performed by the conjugate matching circuit 23. The switching determination unit 25 may use the received power of the radio circuit 17 as a determination criterion, or may use the connection state (plug information) of the earphone cable 50 as a determination criterion. For example, it is possible to effectively perform impedance matching by performing matching when the earphone cable is not connected and not matching when the earphone cable is connected. The switching determination unit 25 is mounted on the board, but may not be a board on which the conjugate matching circuit 23 is mounted.

In the wireless communication device 30, since it is possible to switch the presence / absence of matching by the switching determination unit 25, optimal adjustment is possible according to the antenna impedance when the earphone cable 50 is connected (connected or not connected). It becomes.

[Embodiment 11]
FIG. 12 is a block diagram illustrating a configuration example of the wireless communication device 31 according to the present embodiment. As shown in FIG. 12, the wireless communication device 31 includes an amplifier circuit 24 and a switching determination unit 25 in addition to the configuration of the wireless communication device 3 shown in FIG.

The amplifier circuit 24 includes a power supply path between the signal terminal 11 and the radio circuit 17 fed from the radio circuit 17 (that is, a power feed path from the radio circuit 17 to the feed point 19), and a GND terminal 12 fed from the radio circuit 17. It is provided at two locations, the power supply path to the radio circuit 17 (that is, the power supply path from the radio circuit 17 to the power supply point 20).

The switching determination unit 25 is electrically connected to each amplifier circuit 24 and switches presence / absence of amplification performed by the amplifier circuit 24. The switching determination unit 25 may use the received power of the radio circuit 17 as a determination criterion, or may use the connection state (plug information) of the earphone cable 50 as a determination criterion. For example, amplification can be effectively performed by performing amplification when the reception power of the radio circuit 17 is small and not performing amplification when the reception power of the radio circuit 17 is large. The switching determination unit 25 is mounted on the substrate, but may not be a substrate on which the amplifier circuit 24 is mounted.

In the wireless communication device 31, since it is possible to switch the presence / absence of amplification by the switching determination unit 25, the optimum adjustment is made according to the received power of the antenna when the earphone cable 50 is connected (connected or not connected). Is possible. Note that the switching determination unit 25 can be configured to switch the magnitude of the amplification amount of the amplifier circuit 24.

The first to eleventh embodiments have been described above. Here, in each of the above-described embodiments, the connector 10, the audio circuit 16, and the radio circuit 17 are mounted on the same substrate. According to this configuration, it is possible to reduce the cost by suppressing an increase in the number of parts.

However, the present invention is not limited to this, and the connector 10, the audio circuit 16, and the radio circuit 17 may be mounted on different substrates. For example, the connector 10 can be configured to be mounted on a substrate (substrate B) different from the substrate (substrate A) on which the audio circuit 16 and the radio circuit 17 are mounted.

As a specific example, a flexible board (first board) on which the connector 10 is mounted, and a main board (second board) on which the audio circuit 16 and the radio circuit 17 are mounted, the flexible board is an inter-board connector. There is a configuration in which the main board is connected by (connecting parts) or the like. The wiring line from the audio circuit 16 and the power supply line from the radio circuit 17 on the main board and the signal terminal on the flexible board (that is, the signal wiring connected to the signal terminal) are connected via the board-to-board connector. Electrically connected. The connection between the two is not limited to the board-to-board connector, and a spring or the like may be used. Moreover, although not limited to a flexible substrate, a rigid substrate may be used, but a flexible substrate is preferable in terms of increasing the degree of freedom in arrangement.

As described above, according to the configuration in which the connector 10 is mounted on another board, the height of the connector 10 is relatively high, and the degree of freedom of arrangement of the connector 10 that affects the device size is increased. It is possible to reduce the thickness. For example, when the connector 10 is mounted on the main board, the height from the mounting surface of the main board to the inner wall of the housing is required to be higher than the height of the connector 10. When mounted on a flexible board, the height from the mounting surface of the main board to the inner wall of the housing can be made equal to or less than the height of the connector 10 by arranging the flexible board so that the height is shifted from the main board. Thus, the wireless communication device can be thinned.

In the configuration including the flexible substrate and the main substrate, the feeding points 19 and 20 may be disposed on the flexible substrate side or on the main substrate side. In either case, power is supplied via the board-to-board connector.

Further, the ground pattern (substrate GND 18 in FIG. 1) may be formed on a flexible substrate or a main substrate. When forming on a flexible substrate, as shown in each embodiment, the ground pattern does not overlap the mounting region of the connector 10 and the signal wiring formation region (and the GND wiring formation region) on the flexible substrate. By arranging in this manner, the above-described effects can be achieved.

On the other hand, when forming on the main board, the GND terminal 12 of the connector 10 is electrically connected to the ground pattern on the main board via the board-to-board connector, so the flexible board on which the connector 10 is mounted. No ground pattern is formed. That is, it is not necessary to form a ground pattern on the flexible substrate. Therefore, since the connector 10 (including the signal terminal 11 and the GND terminal 12) and the wiring on the flexible board connected to the connector 10 do not couple with the ground pattern, the wiring 10 can be well contributed to radiation. Yes. Therefore, in this state, since the signal terminal 11 or both the signal terminal 11 and the GND terminal 12 are supplied with power from the radio circuit 17, the antenna through which the connector 10 transmits and receives radio signals regardless of the connection of the earphone cable 50. Can work as well.

In the case where the ground pattern is formed on the main board, since the ground pattern is not formed on the flexible board, the connector 10 can be operated as the antenna by supplying power only to the GND terminal 12. Also in this configuration, a conjugate matching circuit that performs matching between the ground terminal side and the radio circuit side, an amplifier circuit, and the like can be provided, as in the case where power is supplied only to the signal terminal 11.

When the ground pattern is formed on the main board, the ground pattern is connected to the board-to-board connector and the wiring formation area separated from the audio circuit 16 and the board GND 18 (ground pattern) at the communication frequency. It is more preferable that they are arranged so as not to overlap at least a part of them, or the entire region thereof. As the separated wiring, for example, there is a wiring for connecting from the land on the inter-board connection connector side of the RF blocking filter 13 to the contact portion of the inter-board connection connector.

Hereinafter, as an example of the present invention, an example in which a wireless communication device in which RF blocking filters 13 and 14 are added to the wireless communication device 1 described in the first embodiment configures a DTV antenna with an earphone jack (Example 1). ) And an example (Example 2) in which a wireless communication device configured by a combination of the

wireless communication devices

6 and 10 shown in the sixth and tenth embodiments configures a DTV antenna with an earphone jack and a GPS antenna. Two examples will be described.

[Example 1]
FIG. 13 is a perspective view illustrating a configuration example of the wireless communication device 100 according to the present embodiment. FIG. 13 is a block diagram of the wireless communication device 100. The wireless communication device 100 has a digital television (DTV) viewing function and a DTV antenna (DTV built-in antenna) A that receives radio waves in the DTV band (UHF band).

As shown in FIGS. 13 and 14, the wireless communication device 100 includes a substrate 101 (first substrate), an earphone jack 102, a DTV band notch filter 104 (first filter), a DTV wireless circuit 106 (wireless circuit), and A control circuit 107 (signal processing circuit) is provided. A power supply point 105 is used when power is supplied from the DTV wireless circuit 106 to the GND terminal of the earphone jack 102.

The configuration of the wireless communication device 100 corresponds to the configuration of the wireless communication device in which the RF blocking filters 13 and 14 are added to the wireless communication device 1 shown in the first embodiment as described below. That is, the earphone jack 102 corresponds to the connector 10, the DTV band notch filter 104 corresponds to the RF blocking filter 13 and the RF blocking filter 14, the DTV radio circuit 106 corresponds to the radio circuit 17, and the control circuit 107 corresponds to the audio circuit 16. Corresponding to The feeding point 105 corresponds to the feeding point 19. In FIGS. 13 and 14, the substrate GND (ground pattern) is not shown.

On the substrate 101, an earphone jack 102, a DTV band notch filter 104, and a DTV radio circuit 106 are mounted. The control circuit 107 is mounted on the substrate 101, but may be mounted on another substrate.

The earphone jack 102 is a connector part, and an earphone cable (not shown) is detachable (connectable). Three signal terminals of the earphone jack 102 are provided, and correspondingly, three DTV band notch filters 104 are also provided. A signal terminal 103 formed on the substrate 101 is connected between the signal terminal of the earphone jack 102 and the DTV band notch filter 104. The signal wiring 103 is equivalently integrated with the signal terminal of the earphone jack 102 and may be a part of the signal terminal or may be a separate unit connected in a direct current. Further, one signal wiring 103 is formed so as to branch on the substrate 101, and extends between the signal terminal and the feeding point 105.

The DTV band notch filter 104 is a filter that blocks a DTV band signal. The DTV wireless circuit 106 is a circuit that controls DTV communication, and includes a tuner and the like. The DTV wireless circuit 106 and the feeding point 105 are connected by a transmission line (feeding path) formed on the substrate 101. The control circuit 107 is a circuit that performs various controls, and the various controls include an audio output control of the earphone cable and a control of the DTV radio circuit 106. The control circuit 107 is electrically connected to the DTV band notch filter 104 and the DTV radio circuit 106, respectively.

Although not shown, the ground pattern formed on the substrate 101 is arranged so as not to overlap at least part of the mounting region of the earphone jack 102 and the formation region of the signal wiring 103. Note that the ground pattern may be arranged so as not to overlap the mounting area of the earphone jack 102 and the entire formation area of the signal wiring 103. It is preferable that the GND terminal of the earphone jack 102 is electrically connected to the ground pattern by wiring, and a DTV band notch filter is provided on the wiring.

According to the above configuration, when the signal terminal and the GND terminal of the earphone jack 102 are separated from the control circuit 107 and the ground pattern in the DTV band, the earphone jack 102 and the wiring connected thereto are connected to the ground pattern. Since the coupling with the ground pattern is reduced as compared with the case where it is in a position where it overlaps, it can contribute to radiation. Therefore, in this state, by feeding power with the connection point between the signal wiring 103 and the transmission line extending from the DTV radio circuit 106 as the feeding point 105, the earphone jack 102 and the signal wiring 103 are connected regardless of the connection of the earphone cable. It can be operated as a DTV antenna A.

When the earphone cable is not connected to the earphone jack 102, the DTV antenna A operates. The DTV antenna A can ensure the antenna performance to the extent that there is no problem in radio wave reception.

On the other hand, when the earphone cable is connected to the earphone jack 102, the audio signal line of the earphone cable and the signal terminal of the earphone jack 102 are connected, and the earphone cable is also included in the DTV antenna A and operates. The DTV antenna A ′ at this time has an antenna volume that increases as the earphone cable operates as an antenna, so that very good antenna performance can be obtained.

Therefore, good antenna performance can be ensured by the earphone jack 102 both when the earphone cable is not connected and when it is connected. Therefore, in the wireless communication device 100, when the earphone cable is connected to the earphone jack 102, not only good antenna characteristics can be obtained, but also when the earphone cable is not connected, antenna performance can be ensured and communication is performed. It is possible.

Note that, according to the configuration of the wireless communication device 100, the input impedance of the antenna changes between when the earphone cable is not connected and when it is connected. Specifically, when the earphone cable is not connected, the impedance distribution is widened, but when the earphone cable is connected, transition is made in a direction that converges to a certain impedance. In anticipation of this transition, it is desirable to adjust the antenna input impedance at the time of non-connection so that a large mismatch with the circuit side impedance does not occur at the time of connection.

Power may be supplied from the DTV wireless circuit 106 to the GND terminal of the earphone jack 102, or a wiring (separated in terms of RF) connected to the GND terminal may be capacitively coupled to the DTV antenna A to It is good also as a part. Further, the DTV antenna A can be configured by connecting the GND terminal and the signal terminal of the earphone jack 102 by DC cut and strengthening the RF coupling.

[Example 2]
FIG. 15 is a perspective view illustrating a configuration example of the wireless communication device 200 according to the present embodiment. FIG. 16 is a block diagram of the wireless communication device 200. The wireless communication device 200 has a digital TV (DTV) viewing function and a GPS function, and receives a DTV antenna (DTV built-in antenna) A that receives DTV band (UHF band) radio waves and a GPS band electromagnetic wave. A GPS antenna is provided.

As shown in FIGS. 15 and 16, the wireless communication device 200 includes a substrate 201 (first substrate), an earphone jack 202, a DTV band notch filter 204 (first filter), a GPS band notch filter 205 (second filter), Extension conductor 206, springs 207 and 208, GPS / DTV branch circuit 209, GPS wireless circuit 210 (wireless circuit), conjugate matching circuit 211, DTV wireless circuit 212 (wireless circuit), switching determination unit 213, and control circuit 214 ( Signal processing circuit). 215 in FIG. 16 is a feeding point when feeding power from the GPS radio circuit 210 and the DTV radio circuit 212.

The configuration of the wireless communication device 200 corresponds to the configuration of the

wireless communication devices

6 and 10 of the sixth and tenth embodiments as described below. That is, the earphone jack 202 corresponds to the connector 10, the DTV band notch filter 204 corresponds to the RF blocking filter 13 and the RF blocking filter 14, the GPS band notch filter 205 corresponds to the filter 22, and the extension conductor 206 corresponds to the extension conductor 21. , The conjugate matching circuit 211 corresponds to the conjugate matching circuit 23, the GPS radio circuit 210 and the DTV radio circuit 212 correspond to the radio circuit 17, the switching determination unit 213 corresponds to the switching determination unit 25, and the control circuit 214. Corresponds to the audio circuit 16. The feeding point 215 corresponds to the feeding point 19. 15 and 16 do not show the substrate GND (ground pattern).

On the substrate 201, an earphone jack 202, a DTV band notch filter 204, a GPS band notch filter 205, a GPS / DTV branch circuit 209, a GPS radio circuit 210, a conjugate matching circuit 211, a DTV radio circuit 212, and a switching determination unit 213 are provided. Has been implemented. The extension conductor 206 is fitted into

springs

207 and 208 that are also installed on the substrate 201. The control circuit 214 may be mounted on the substrate 201 or may be mounted on another substrate.

The earphone jack 202 is a connector part, and an unillustrated earphone cable can be inserted and removed (connectable). Three signal terminals of the earphone jack 202 are provided, and correspondingly, three DTV band notch filters 204 are also provided. A signal terminal 203 formed on the substrate 201 is connected between the signal terminal of the earphone jack 202 and the DTV band notch filter 204. The signal wiring 203 is equivalently integrated with the signal terminal of the earphone jack 202 and may be a part of the signal terminal or may be a separate body connected in a direct current. One signal wiring 203 is formed so as to branch on the substrate 201, and extends between the signal terminal and the GPS band notch filter 205.

The DTV band notch filter 204 is a filter that blocks a DTV band signal. The GPS band notch filter 205 is a filter that blocks GPS band signals. The GPS / DTV branch circuit 209 is a circuit for branching the GPS band signal and the DTV band signal, transmits the GPS band signal to the GPS radio circuit 210, and transmits the DTV band signal via the conjugate matching circuit 211. The data is transmitted to the DTV radio circuit 212. The GPS / DTV branch circuit 209 and the feeding point 215 are connected by a transmission line (feeding path) formed on the substrate 201.

The conjugate matching circuit 211 has two paths that can be switched internally. One path is a path that achieves complex conjugate matching between the input impedance of the DTV antenna A when the earphone cable is not connected and the input impedance of the DTV radio circuit 212, and the other path is the DTV radio circuit 212. Is a path having the characteristic impedance of the line to which is connected. A switching determination unit 213 is connected to the conjugate matching circuit 211, and the switching determination unit 213 can switch the two paths of the conjugate matching circuit 211. The switching determination unit 213 may use the received power of the DTV wireless circuit 212 as a determination criterion, or may use the connection state of the earphone cable as a determination criterion.

The GPS wireless circuit 210 is a circuit that controls GPS communication. The DTV wireless circuit 212 is a circuit that controls DTV communication, and includes a tuner and the like. Between the GPS / DTV branch circuit 209 and the GPS radio circuit 210, between the GPS / DTV branch circuit 209 and the conjugate matching circuit 211, between the conjugate matching circuit 211 and the DTV radio circuit 212, and between the conjugate matching circuit 211 and the switching determination unit 213 Are connected by transmission lines formed on the substrate 101, respectively. The control circuit 214 is a circuit that performs various types of control, and the various types of control include sound output control of the earphone cable, control of the GPS radio circuit 210, and control of the DTV radio circuit 212. The control circuit 214 is electrically connected to the DTV band notch filter 204, the GPS radio circuit 210, and the DTV radio circuit 212, respectively.

Although not shown, the ground pattern formed on the substrate 201 includes a mounting area of the earphone jack 202, a formation area of the signal wiring 203, and a conductor portion (GPS band notch filter 205 from the signal wiring 203 to the feeding point 215). The extension conductor 206 and the springs 207 and 208) are arranged so as not to overlap at least a part of them. The ground pattern may be arranged so as not to overlap with the whole. It is preferable that the GND terminal of the earphone jack 202 is electrically connected to the ground pattern by wiring, and a DTV band notch filter is provided on the wiring.

According to the above configuration, when the signal terminal and the GND terminal of the earphone jack 202 are separated from the control circuit 214 and the ground pattern in the DTV band, the earphone jack 202 and the wiring connected thereto are connected to the ground pattern. Since the coupling with the ground pattern is reduced as compared with the case where it is in a position where it overlaps, it can contribute to radiation. Therefore, in this state, by supplying power with the connection point between the spring 208 and the transmission line extending from the GPS / DTV branch circuit 209 as the power supply point 215, regardless of the connection of the earphone cable, the earphone jack 202, the signal wiring 203, The GPS band notch filter 205, the

springs

207 and 208, and the extension conductor 206 can be operated as the DTV antenna A.

When the earphone cable is not connected to the earphone jack 202, the DTV antenna A operates. The DTV antenna A can ensure the antenna performance to the extent that there is no problem in radio wave reception. Further, since the antenna volume is increased by the extension conductor 206 as compared with the DTV antenna A of the first embodiment, good antenna performance is obtained.

On the other hand, when the earphone cable is connected to the earphone jack 202, the audio signal line of the earphone cable and the signal terminal of the earphone jack 202 are connected, and the earphone cable is also included in the DTV antenna A and operates. The DTV antenna A ′ at this time has an antenna volume that increases as the earphone cable operates as an antenna, so that very good antenna performance can be obtained.

Therefore, good antenna performance can be ensured by the earphone jack 202 both when the earphone cable is not connected and when it is connected. Therefore, in the wireless communication device 200, when the earphone cable is connected to the earphone jack 202, not only good antenna characteristics can be obtained, but also when the earphone cable is not connected, antenna performance can be ensured and communication is performed. It is possible.

Even in the configuration of the wireless communication device 200, the input impedance of the antenna changes between when the earphone cable is not connected and when it is connected. That is, when the earphone cable is not connected, the impedance distribution is widened, and when the earphone cable is connected, transition is made in a direction that converges to a certain impedance. Therefore, in anticipation of this transition, it is desirable to adjust the antenna input impedance at the time of non-connection so that a large mismatch with the circuit side impedance does not occur at the time of connection.

Also, since the GPS band notch filter 205 is provided, the extension conductor 206 operates as a GPS antenna. Since the GPS antenna shares the antenna element of the DTV antenna A, it contributes to the miniaturization of the wireless communication device 200.

Furthermore, since it is possible to switch the presence / absence of impedance matching by the switching determination unit 213, optimum adjustment is possible according to the antenna impedance when the earphone cable is connected (connected or not connected). Note that the wireless communication device 200 can include an amplifier circuit instead of the conjugate matching circuit 211. Further, an amplifier circuit may be provided between the conjugate matching circuit 211 and the DTV radio circuit 212, and the conjugate matching circuit 211 may be configured to perform matching with the amplifier circuit.

(Preferred form of the present invention)
As described above, the wireless device of the present invention is a wireless device that includes a connector to which a component that inputs or outputs a first frequency signal can be connected, and that transmits and receives a wireless signal having a second frequency different from the first frequency. A first signal processing circuit for processing the first frequency signal, a radio circuit for processing the second frequency radio signal, the connector, and a ground pattern and a wiring pattern are formed. A connector, and the connector includes at least one signal terminal electrically connected to the signal processing circuit and a ground terminal electrically connected to the ground pattern, and the wiring pattern includes: A first wiring connected to the signal terminal; and a second wiring connected to the ground terminal, wherein the signal terminal is directly or indirectly fed from the wireless circuit. In the first substrate, at least the ground pattern is disposed in the upper layer, the lower layer, and the inside of the first substrate with respect to at least a part of the mounting region of the connector and the formation region of the first wiring. It is characterized by not.

The wireless device of the present invention further includes a first filter that blocks the signal of the second frequency, and the first filter is provided in a transmission line between the signal terminal and the signal processing circuit, and the first wiring Is preferably a wiring connecting the signal terminal and the first filter.

Furthermore, in the wireless device of the present invention, at least the ground pattern is provided in the upper layer, the lower layer, and the inside of the first substrate with respect to the connector mounting region and the first wiring formation region in the first substrate. It is desirable that they are not arranged.

According to the above configuration, since the coupling between the connector and the wiring connected thereto and the ground pattern is further reduced, the substantial antenna volume (the volume of the portion contributing to radiation) is further increased. Accordingly, it is possible to further improve the antenna performance when the components are not connected.

In the wireless device of the present invention, the ground terminal is directly or indirectly supplied with power from the wireless circuit, and in the first substrate, the first substrate has at least a part of the formation region of the second wiring. It is preferable that at least the ground pattern is not disposed in the upper layer, the lower layer, and the inside.

The wireless device of the present invention further includes a first filter that blocks the signal of the second frequency, and the first filter includes a transmission line between the signal terminal and the signal processing circuit, and the ground terminal and the above The first wiring is a wiring for connecting the signal terminal and the first filter, and the second wiring is for connecting the ground terminal and the first filter. It is desirable that the wiring be used.

Furthermore, in the wireless device of the present invention, in the first substrate, the connector mounting region, the first wiring formation region, and the upper layer, the lower layer, and the interior of the first substrate with respect to the second wiring formation region It is desirable that at least the ground pattern is not disposed.

In the wireless device of the present invention, it is preferable that the signal processing circuit and the wireless circuit are mounted on the first substrate.

According to the above configuration, it is possible to reduce the cost by suppressing an increase in the number of parts.

Alternatively, the wireless device of the present invention includes a second substrate different from the first substrate, the signal processing circuit and the wireless circuit are mounted on the second substrate, and the first substrate is connected to the first substrate by a connecting component. It is preferable that the signal terminal connected to the second substrate is electrically connected to the signal processing circuit and the wireless circuit via the connection component.

The wireless device of the present invention includes a second substrate different from the first substrate, the signal processing circuit and the wireless circuit are mounted on the second substrate, and the first substrate is connected to the first substrate by a connecting component. Connected to the second substrate, the signal terminal is electrically connected to the signal processing circuit and the wireless circuit via the connection component, and the ground terminal is connected to the wireless circuit via the connection component. It is preferable to be electrically connected.

According to each of the above-described configurations, the degree of freedom of the arrangement of the connectors that are relatively high and have an influence on the device size is increased, and it is possible to realize the miniaturization and thinning of the radio.

The radio of the present invention includes a connector to which a component for inputting or outputting a first frequency signal can be connected, and transmits and receives a radio signal having a second frequency different from the first frequency, A signal processing circuit for processing a signal of the first frequency, a wireless circuit for processing a wireless signal of the second frequency, a first board on which the connector is mounted, the signal processing circuit and the wireless circuit are mounted. And a second substrate on which a ground pattern is formed. The first substrate is connected to the second substrate by a connection component, and the connector is electrically connected to the signal processing circuit via the connection component. At least one signal terminal connected to the ground pattern, and a ground terminal electrically connected to the ground pattern via the connection component, the signal terminal including the connection component And reason is electrically connected to the radio circuit, it is characterized in that it is directly or indirectly fed from the radio circuit.

The radio of the present invention further includes a first filter that blocks the signal of the second frequency, and the first filter is provided on a transmission line between the signal terminal and the signal processing circuit on the second substrate. In the second substrate, the upper layer, the lower layer, and the inside of the second substrate with respect to the connection region with the connection component and the wiring formation region connected to the connection component side of the first filter are at least the above It is desirable that no ground pattern is disposed.

In the wireless device of the present invention, it is preferable that the ground terminal is electrically connected to the wireless circuit via the connection component and is directly or indirectly supplied with power from the wireless circuit.

Furthermore, the wireless device of the present invention includes a first filter that blocks the signal of the second frequency, and the first filter includes a transmission line between the signal terminal and the signal processing circuit on the second substrate, and Provided in the transmission line between the ground terminal and the ground pattern in the second substrate, respectively, and connected to the connection region with the connection component and the connection component side of each first filter in the second substrate. It is desirable that at least the ground pattern is not disposed in the upper layer, the lower layer, and the inside of the second substrate with respect to the wiring formation region.

The radio of the present invention includes a connector to which a component for inputting or outputting a first frequency signal can be connected, and transmits and receives a radio signal having a second frequency different from the first frequency, A signal processing circuit for processing a signal of the first frequency, a wireless circuit for processing a wireless signal of the second frequency, a first board on which the connector is mounted, the signal processing circuit and the wireless circuit are mounted. And a second substrate on which a ground pattern is formed. The first substrate is connected to the second substrate by a connection component, and the connector is electrically connected to the signal processing circuit via the connection component. At least one signal terminal connected to the ground pattern, and a ground terminal electrically connected to the ground pattern via the connection component, wherein the ground terminal is connected to the connection portion. Via is electrically connected to the radio circuit, it is characterized in that it is directly or indirectly fed from the radio circuit.

The radio of the present invention includes a first filter that blocks the signal of the second frequency, and the first filter is provided on a transmission line between the ground terminal and the ground pattern on the second substrate, In the second substrate, at least the ground is provided in an upper layer, a lower layer, and an inside of the second substrate with respect to a connection region with the connection component and a wiring formation region connected to the connection component side of the first filter. It is desirable that the pattern is not arranged.

In the wireless device of the present invention, it is preferable that an extension conductor is connected in a direct current manner to a terminal that is fed from the radio circuit in the connector, and the extension conductor is fed from the radio circuit.

According to the above configuration, since the extension conductor is connected to the terminal supplied from the radio circuit in a DC manner, “connector + extension conductor” is used when the component is not connected, and “connector + extension conductor” is used when the component is connected. The “+ component” operates as an antenna. Therefore, since the antenna volume is increased, it is possible to improve the antenna performance when the components are connected and when they are not connected.

Furthermore, the wireless device of the present invention includes a second filter that cuts off a signal having a third frequency different from the first frequency and the second frequency, and the second filter includes a terminal that is fed from the wireless circuit. It is preferable to be provided in a path connecting the extension conductor.

According to the above configuration, the extension conductor can be operated as an antenna of another communication system. Therefore, the number of antennas that can be used at the same time increases, so that multiple functions can be achieved. Moreover, since the antenna element is shared by both antennas, it contributes to miniaturization of the radio.

In the wireless device of the present invention, the input impedance on the signal terminal side when the component is not connected and the wireless circuit side provided in the power supply path between the terminal supplied from the wireless circuit and the wireless circuit in the connector It is preferable to include a first conjugate matching circuit that matches the input impedance to be complex conjugate.

According to the above configuration, the first conjugate matching circuit can satisfactorily match the signal terminal side and the wireless circuit side when the component is not connected, so that it is possible to improve the antenna performance when the component is not connected. Become.

In the wireless device of the present invention, the input impedance on the ground terminal side when the component is not connected and the input impedance on the wireless circuit side are provided in a power feeding path between the ground terminal and the wireless circuit. It is preferable to include a first conjugate matching circuit that performs matching so that

According to the above configuration, the first conjugate matching circuit can satisfactorily match the ground terminal side and the wireless circuit side when the component is not connected, so that it is possible to improve the antenna performance when the component is not connected. Become.

Furthermore, it is preferable that the wireless device of the present invention further includes a switching determination unit that is electrically connected to the first conjugate matching circuit and switches presence / absence of matching performed by the first conjugate matching circuit.

According to the above configuration, since the presence or absence of matching can be switched by the switching determination unit, depending on the input impedance on the signal terminal side or the ground terminal side in the connected state (connected or not connected) of the component Optimum adjustment is possible.

In addition, it is preferable that the wireless device of the present invention includes an amplifier circuit that is provided in a power supply path between the wireless circuit in the connector and the terminal supplied from the wireless circuit and amplifies an input signal.

According to the above configuration, since the received radio signal can be amplified, the input power in the radio circuit can be improved even when the received power of the antenna is low.

Further, in the wireless device of the present invention, the input impedance on the signal terminal side when the component is not connected and the input impedance on the amplification circuit side are provided in the power supply path between the terminal supplied from the wireless circuit and the amplifier circuit. Are preferably provided with a second conjugate matching circuit for matching so as to be complex conjugate.

According to the above configuration, the second conjugate matching circuit can satisfactorily match the signal terminal side and the amplifier circuit side when the component is not connected, so that it is possible to improve the antenna performance when the component is not connected. Become.

In addition, it is preferable that the wireless device of the present invention includes an amplifier circuit that is provided in a power feeding path between the ground terminal and the wireless circuit and amplifies an input signal.

Furthermore, in the wireless device of the present invention, the input impedance on the ground terminal side and the input impedance on the amplifier circuit side when the component is not connected are provided in a power feeding path between the ground terminal and the amplifier circuit. It is preferable to include a second conjugate matching circuit that performs matching so that

According to the above configuration, the second conjugate matching circuit can satisfactorily match the ground terminal side and the amplifier circuit side when the component is not connected, so that it is possible to improve the antenna performance when the component is not connected. Become.

In addition, it is preferable that the wireless device of the present invention further includes a switching determination unit that is electrically connected to the amplification circuit and switches presence / absence of amplification performed by the amplification circuit.

According to the above configuration, since it is possible to switch the presence / absence of amplification by the switching determination unit, optimum adjustment is possible according to the received power of the antenna in the connected state (connected or not connected) of the components. It becomes.

In the wireless device of the present invention, it is preferable that the switching determination unit performs the switching based on the input power of the wireless circuit or the connection state of the components.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

The present invention relates to the use of an antenna for a radio connector.

1 to 9, 30, 31 Wireless communication device 10 Connector 11 Signal terminal 12 GND terminal 13 to 15 RF blocking filter (first filter)
16 Audio circuit (signal processing circuit)
17 wireless circuit 18 substrate GND (ground pattern)
19, 20 Feeding point 21 Extension conductor 22 Filter (second filter)
23 conjugate matching circuit (first conjugate matching circuit)
23 'conjugate matching circuit (second conjugate matching circuit)
24 Amplification circuit 25 Switching judgment part 50 Earphone cable (parts)
51

Plug

100, 200

Wireless communication device

101, 201 Substrate (first substrate)
102,202 Earphone jack (connector)
103, 203 Signal wiring (first wiring)
104,204 DTV band notch filter (first filter)
105, 215 Feed point 106 DTV wireless circuit (wireless circuit)
107 Control circuit (signal processing circuit)
205 GPS band notch filter (second filter)
206 Extension conductor 209 GPS / DTV branch circuit 210 GPS radio circuit (radio circuit)
211 Conjugate matching circuit (first conjugate matching circuit)
212 DTV radio circuit (wireless circuit)
213 switching determination unit 214 control circuit (signal processing circuit)

Claims

A wireless device that includes a connector to which a component that inputs or outputs a signal of a first frequency can be connected, and that transmits and receives a wireless signal of a second frequency different from the first frequency,
A signal processing circuit for processing the signal of the first frequency;
A radio circuit for processing the radio signal of the second frequency;
The connector is mounted, and includes a first substrate on which a ground pattern and a wiring pattern are formed,
The connector has at least one signal terminal electrically connected to the signal processing circuit, and a ground terminal electrically connected to the ground pattern,
The wiring pattern includes a first wiring connected to the signal terminal and a second wiring connected to the ground terminal,
The signal terminal is directly or indirectly powered from the wireless circuit;
In the first substrate, at least the ground pattern is not arranged in the upper layer, the lower layer, and the inside of the first substrate with respect to at least a part of the mounting region of the connector and the formation region of the first wiring. A wireless device characterized by that.
A first filter for blocking the signal of the second frequency,
The first filter is provided on a transmission line between the signal terminal and the signal processing circuit,
The wireless device according to claim 1, wherein the first wiring is a wiring that connects the signal terminal and the first filter.
In the first substrate, at least the ground pattern is not disposed in an upper layer, a lower layer, and an inside of the first substrate with respect to a mounting region of the connector and a formation region of the first wiring. The wireless device according to claim 2.
The ground terminal is fed directly or indirectly from the wireless circuit,
2. The first substrate according to claim 1, wherein at least the ground pattern is not disposed in an upper layer, a lower layer, and an inside of the first substrate with respect to at least a part of a formation region of the second wiring. The radio described.
A first filter for blocking the signal of the second frequency,
The first filter is provided on a transmission line between the signal terminal and the signal processing circuit, and a transmission line between the ground terminal and the ground pattern,
The first wiring is a wiring for connecting the signal terminal and the first filter,
The wireless device according to claim 4, wherein the second wiring is a wiring that connects the ground terminal and the first filter.
In the first substrate, at least the ground pattern is arranged in the upper layer, the lower layer, and the inside of the first substrate with respect to the connector mounting region, the first wiring forming region, and the second wiring forming region. The wireless device according to claim 5, wherein the wireless device is not used.
The radio device according to any one of claims 1 to 6, wherein the signal processing circuit and the radio circuit are mounted on the first substrate.
A second substrate different from the first substrate;
The signal processing circuit and the wireless circuit are mounted on the second substrate,
The first substrate is connected to the second substrate by a connection component,
The radio apparatus according to any one of claims 1 to 3, wherein the signal terminal is electrically connected to the signal processing circuit and the radio circuit via the connection component.
A second substrate different from the first substrate;
The signal processing circuit and the wireless circuit are mounted on the second substrate,
The first substrate is connected to the second substrate by a connection component,
The signal terminal is electrically connected to the signal processing circuit and the wireless circuit via the connection component,
The wireless device according to any one of claims 4 to 6, wherein the ground terminal is electrically connected to the wireless circuit via the connection component.
A wireless device that includes a connector to which a component that inputs or outputs a signal of a first frequency can be connected, and that transmits and receives a wireless signal of a second frequency different from the first frequency,
A signal processing circuit for processing the signal of the first frequency;
A radio circuit for processing the radio signal of the second frequency;
A first board on which the connector is mounted;
The signal processing circuit and the wireless circuit are mounted, and a second substrate on which a ground pattern is formed is provided,
The first substrate is connected to the second substrate by a connection component,
The connector includes at least one signal terminal electrically connected to the signal processing circuit via the connection component, and a ground terminal electrically connected to the ground pattern via the connection component. Have
The wireless device, wherein the signal terminal is electrically connected to the wireless circuit via the connection component and is directly or indirectly supplied with power from the wireless circuit.
A first filter for blocking the signal of the second frequency,
The first filter is provided on a transmission line between the signal terminal and the signal processing circuit in the second substrate,
In the second substrate, at least the ground is provided in an upper layer, a lower layer, and an inside of the second substrate with respect to a connection region with the connection component and a wiring formation region connected to the connection component side of the first filter. The radio according to claim 10, wherein no pattern is arranged.
11. The wireless device according to claim 10, wherein the ground terminal is electrically connected to the wireless circuit via the connection component, and is fed directly or indirectly from the wireless circuit.
A first filter for blocking the signal of the second frequency,
The first filter is provided on a transmission line between the signal terminal and the signal processing circuit on the second substrate, and on a transmission line between the ground terminal and the ground pattern on the second substrate, respectively.
In the second substrate, at least the upper layer, the lower layer, and the inside of the second substrate with respect to the connection region with the connection component and the formation region of the wiring connected to the connection component side of each first filter The radio according to claim 12, wherein a ground pattern is not disposed.
A wireless device that includes a connector to which a component that inputs or outputs a signal of a first frequency can be connected, and that transmits and receives a wireless signal of a second frequency different from the first frequency,
A signal processing circuit for processing the signal of the first frequency;
A radio circuit for processing the radio signal of the second frequency;
A first board on which the connector is mounted;
The signal processing circuit and the wireless circuit are mounted, and a second substrate on which a ground pattern is formed is provided,
The first substrate is connected to the second substrate by a connection component,
The connector includes at least one signal terminal electrically connected to the signal processing circuit via the connection component, and a ground terminal electrically connected to the ground pattern via the connection component. Have
The radio terminal, wherein the ground terminal is electrically connected to the radio circuit via the connection component, and is fed directly or indirectly from the radio circuit.
A first filter for blocking the signal of the second frequency,
The first filter is provided on a transmission line between the ground terminal and the ground pattern on the second substrate,
In the second substrate, at least the ground is provided in an upper layer, a lower layer, and an inside of the second substrate with respect to a connection region with the connection component and a wiring formation region connected to the connection component side of the first filter. The radio according to claim 14, wherein no pattern is arranged.
The extension conductor is connected to the terminal fed from the radio circuit in the connector in a DC manner, and the extension conductor is fed from the radio circuit. The wireless device according to item 1.
A second filter for blocking a signal having a third frequency different from the first frequency and the second frequency;
The wireless device according to claim 16, wherein the second filter is provided in a path connecting the terminal fed from the wireless circuit and the extension conductor.
Provided in the power supply path between the terminal fed from the radio circuit and the radio circuit in the connector, and the input impedance on the signal terminal side and the input impedance on the radio circuit side when no component is connected are complex conjugate The radio device according to any one of claims 1 to 13, further comprising a first conjugate matching circuit that performs matching.
A first conjugate that is provided in a power feeding path between the ground terminal and the wireless circuit and matches the input impedance on the ground terminal side when the component is not connected to the input impedance on the wireless circuit side to be a complex conjugate. 16. The radio device according to claim 14, further comprising a matching circuit.
20. The radio according to claim 18 or 19, further comprising a switching determination unit that is electrically connected to the first conjugate matching circuit and switches presence / absence of matching performed by the first conjugate matching circuit.
The amplifier circuit according to any one of claims 1 to 13, further comprising an amplifier circuit that is provided in a power supply path between the wireless circuit in the connector and the wireless circuit, and amplifies an input signal. The radio described.
Provided in the power supply path between the terminal fed from the wireless circuit and the amplifier circuit, so that the input impedance on the signal terminal side and the input impedance on the amplifier circuit side when components are not connected are complex conjugates The wireless device according to claim 21, further comprising a second conjugate matching circuit for matching.
The wireless device according to claim 14 or 15, further comprising an amplifier circuit provided in a power supply path between the ground terminal and the wireless circuit for amplifying an input signal.
A second conjugate is provided in a power supply path between the ground terminal and the amplifier circuit, and matches the input impedance on the ground terminal side when the component is not connected to the input impedance on the amplifier circuit side so as to be a complex conjugate. 24. The wireless device according to claim 23, further comprising a matching circuit.
The radio device according to claim 21 or 23, further comprising a switching determination unit that is electrically connected to the amplifier circuit and switches the presence or absence of amplification performed by the amplifier circuit.
26. The radio according to claim 20, wherein the switching determination unit performs the switching based on input power of the radio circuit or a connection state of the components.