CN206472169U - Board structure of circuit, antenna assembly and mobile terminal - Google Patents

Abstract

The embodiment of the utility model discloses a circuit board structure, an antenna device and a mobile terminal. The circuit board structure is applied to a mobile terminal. The mobile terminal includes a terminal body. The terminal body includes a top end and a bottom end arranged relative to the top end. The circuit board The structure includes a first main board, a radio frequency main collection module and a baseband module. The main board, and the radio frequency main set module is electrically connected to the feed point of the main set antenna. The embodiment of the utility model can avoid the attenuation caused by the transmission of the radio frequency signal through the cable, and improve the performance of the antenna.

Description

Circuit board structure, antenna device and mobile terminal

technical field

The utility model relates to the field of electronic equipment, in particular to a circuit board structure, an antenna device and a mobile terminal.

Background technique

The technology of mobile terminals such as smartphones is constantly being updated, and people have higher and higher requirements for mobile terminals. Not only do they require good network signals, but they also require thin, light, and beautiful mobile phones.

For the purpose of reducing radiation to the human body, the antenna of the mobile terminal is often arranged at the lower part of the mobile terminal, and then the feeding point of the antenna is connected to the communication module in the mainboard of the upper part of the mobile terminal through a cable. Therefore, in the process of talking, due to the relatively long distance between the head and the antenna, the radiation value received by the human body will be significantly reduced.

However, this method will increase the insertion loss and return loss of the radio frequency signal on the cable, which is not conducive to the reception and transmission of mobile terminal signals.

Utility model content

The embodiment of the utility model provides a circuit board structure, an antenna device and a mobile terminal, which can avoid the attenuation caused by the transmission of a radio frequency signal through a cable with a certain length, and improve the performance of the antenna.

The first aspect of the embodiment of the present invention provides a circuit board structure, which is applied to a mobile terminal. The mobile terminal includes a terminal body. The terminal body includes a top end and a bottom end arranged relative to the top end. The circuit board The structure includes a first main board, a radio frequency main set module and a baseband module, the first main board is fixed on the bottom, wherein:

The first main board is provided with a main set antenna feed point, the radio frequency main set module and the baseband module are fixed on the first main board, and the radio frequency main set module is electrically connected to the main set antenna feed point electric point.

The second aspect of the embodiment of the present invention provides an antenna device, which is applied to a mobile terminal. The antenna device includes the circuit board structure disclosed in the first aspect of the embodiment of the present invention. The antenna device also includes a main set antenna radiation The radiator of the main antenna is electrically connected to the feeding point of the main antenna.

The third aspect of the embodiment of the present invention provides a mobile terminal, the mobile terminal includes the antenna device disclosed in the second aspect of the embodiment of the present invention, the mobile terminal also includes the terminal body, the antenna device is fixed on the terminal body.

As can be seen from the above technical solutions, the utility model embodiment has the following advantages:

In the embodiment of the utility model, the baseband module, the radio frequency main set module and the main set antenna feed point are arranged on the first main board, and the first main board is fixed on the bottom of the mobile terminal, so that the radio frequency main set module and the main set antenna feed The electrical points can be directly connected without cables, avoiding the attenuation caused by the transmission of radio frequency signals through a certain length of cables, and improving the performance of the antenna.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those of ordinary skill in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative labor.

Fig. 1 is the schematic diagram of a kind of circuit board structure disclosed by the utility model embodiment;

Fig. 2 is a schematic diagram of another circuit board structure disclosed in the embodiment of the present invention;

Fig. 3 is a schematic diagram of an antenna device disclosed in an embodiment of the present invention;

Fig. 4 is a schematic diagram of a mobile terminal disclosed in an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, not all of them. the embodiment. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of said features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection, electrical connection or mutual communication; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the mutual communication of two components role relationship. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The embodiment of the utility model provides a circuit board structure, an antenna device and a mobile terminal, which can avoid the attenuation caused by the transmission of a radio frequency signal through a cable with a certain length, and improve the performance of the antenna. Each will be described in detail below.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a circuit board structure disclosed in an embodiment of the present invention. Wherein, the circuit board structure shown in FIG. 1 is applied to a mobile terminal, and the mobile terminal may be a mobile phone, a tablet computer, a notebook computer, and the like.

The above-mentioned mobile terminal includes a terminal body 110, the terminal body 110 includes a top and a bottom set relative to the top, the circuit board structure includes a first main board 120, a radio frequency master module 130 and a baseband module 140, the first main board 120 is fixed on the terminal body 110 at the bottom of , where:

The main antenna feed point 121 is set on the first main board 120 , the RF main module 130 and the baseband module 140 are fixed on the first main board 120 , and the RF main module 130 is electrically connected to the main antenna feed point 121 .

By setting the baseband module 140, the radio frequency main set module 130 and the main set antenna feed point 121 on the first main board 120, and the first main board 120 is fixed on the bottom of the mobile terminal, so that the radio frequency main set module 130 and the main set antenna feed point 121 The electrical points 121 can be directly connected without cables, avoiding the attenuation caused by the transmission of radio frequency signals through a certain length of cables, and improving the performance of the antenna.

In addition, the baseband module 140 and the radio frequency master module 130 are all arranged on the first motherboard 120, so that the distance between the baseband module 140 and the radio frequency master module 130 is shortened, and the gap between the baseband module 140 and the radio frequency master module 130 can be avoided. A transmission problem occurs; in addition, the baseband module 140 is arranged on the first motherboard 120, and the first motherboard 120 is fixed on the bottom of the terminal body 110, which can serve the purpose of dispersing the heat source in the terminal device, thereby improving the performance of the baseband module 140. cooling performance.

As an optional implementation manner, the circuit board structure further includes a radio frequency diversity module 150, and the circuit board structure further includes a second main board 160 arranged relative to the first main board 120, and the second main board 160 is fixed on the top of the terminal body 110. A diversity antenna feed point 161 is disposed in the second main board 160 , the radio frequency diversity module 150 is fixed on the second main board 160 , and the radio frequency diversity module 150 is electrically connected to the diversity antenna feed point 161 .

In the embodiment of the present invention, the radio frequency diversity antenna 170 is arranged on the top of the terminal body 110, and the radio frequency diversity module 150 and the diversity antenna feed point 161 are arranged on the second main board 160, and the second main board 160 is fixed on the top of the terminal body 110 The radio frequency signal is fed into the radio frequency diversity antenna 170 from the radio frequency diversity module 150 through the diversity antenna feed point 161, which can reduce the transmission distance between the radio frequency diversity module 150 and the radio frequency diversity antenna 170, and reduce the attenuation loss of the radio frequency signal on the cable.

When the first main board 120 is fixed on the terminal body 110, the first main board 120 is close to the radio frequency main antenna 180 of the mobile terminal, and the second main board 160 is close to the radio frequency diversity antenna 170 of the mobile terminal. It can be understood that there are other areas between the first main board 120 and the second main board 160 , for example, an area for setting a battery. The first main board 120 is close to the radio frequency main collection antenna 180 and means that the distance from the first main board 120 to the radio frequency main collection antenna 180 is less than the distance from the above-mentioned other areas and the second main board 160 to the radio frequency main collection antenna 180; the second main board 160 is close to the radio frequency diversity antenna 170 means that the distance from the second main board 160 to the radio frequency diversity antenna 170 is smaller than the distance from the above other areas and the first main board 120 to the radio frequency diversity antenna 170 .

In the embodiment of the present invention, the radio frequency master module 130 is composed of a plurality of electronic components. 130 is a radio frequency feed source of the main radio frequency antenna 180 . The plurality of electronic components of the radio frequency main assembly module 130 are scattered and arranged on the first main board 120, which fully utilizes the use area of the first main board 120, minimizes the area of the first main board 120, and fully optimizes the size of the first main board 120. volume. Since both the radio frequency main module 130 and the main antenna feeding point 121 are located in the first main board 120 , the distance between the radio frequency main module 130 and the main antenna feeding point 121 is reduced. The radio frequency main set module 130 and the main set antenna feed point 121 can be directly electrically connected, and can also be electrically connected through a shorter cable, that is, the time required to connect the radio frequency main set module 130 and the main set antenna feed point 121 can be reduced. The length of the cable, or omit the cable connecting the radio frequency main set module 130 and the main set antenna feed point 121, for example, connect the radio frequency main set module 130 and the main set antenna feed point 121 through a metal shrapnel.

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of another circuit board structure disclosed in an embodiment of the present invention. Wherein, the circuit board structure shown in FIG. 2 is applied to a mobile terminal, and the mobile terminal may be a mobile phone, a tablet computer, a notebook computer, and the like.

The above-mentioned mobile terminal includes a terminal body 210, the terminal body 210 includes a top end and a bottom end arranged relative to the top end, the circuit board structure includes a first main board 220, a radio frequency master module 230 and a baseband module 240, the first main board 220 is fixed on the bottom end, where:

The main antenna feed point 221 is set on the first main board 220 , the RF main module 230 and the baseband module 240 are fixed on the first main board 220 , and the RF main module 230 is electrically connected to the main antenna feed point 221 .

As an optional implementation manner, the circuit board structure further includes a first radio frequency diversity module 250 and a second radio frequency diversity module 260, and the circuit board structure further includes a second main board 270 arranged relative to the first main board 220, the second The main board 270 is fixed on the top of the terminal body 210, the second main board 270 is provided with a diversity antenna feed point 271, the first radio frequency diversity module 250 is fixed on the first main board 220, and the second radio frequency diversity module 260 is fixed on the second main board 270, And the first radio frequency diversity module 250 is electrically connected to the second radio frequency diversity module 260 , and the second radio frequency diversity module 260 is electrically connected to the diversity antenna feed point 271 .

In this embodiment, the original radio frequency diversity module is divided into a first radio frequency diversity module 250 and a second radio frequency diversity module 260, and the first radio frequency diversity module 250 is fixed on the first motherboard 220, and the second radio frequency diversity module 260 is fixed on the The second main board 270 . It can be understood that the original radio frequency diversity module is composed of multiple electronic components, and the electronic components that are more sensitive to transmission loss in the original radio frequency diversity module can be set in the second radio frequency diversity module 260, and the The electronic components that are not sensitive to transmission loss are arranged in the first radio frequency diversity module 250. Since the second main board 270 is fixed on the top of the terminal body 210, so as to be close to the radio frequency diversity antenna, the electronic components that are sensitive to transmission loss can be ensured. Less signal loss improves antenna performance. On the other hand, disposing electronic components that are not sensitive to transmission loss in the first radio frequency diversity module 250 can reduce the area of the second main board 270, and when designing the terminal body 210, the upper part of the shell can be reduced to The gap in the antenna design improves the texture and aesthetics of the case.

As an optional implementation manner, the circuit board structure further includes a radio frequency transceiver chip 280 , the radio frequency transceiver chip 280 is fixed on the first motherboard 220 and electrically connected to the radio frequency main collection module 230 and the first radio frequency diversity module 250 .

In this embodiment, the radio frequency transceiver chip 280 is responsible for receiving radio frequency signals or sending radio frequency signals. The radio frequency transceiver chip 280 is electrically connected to the radio frequency master module 230 , obtains radio frequency signals from the radio frequency master module 230 , or sends radio frequency signals to the radio frequency master module 230 . The radio frequency transceiver chip 280 is electrically connected to the first radio frequency diversity module 250 , and obtains radio frequency signals from the first radio frequency diversity module 250 . The radio frequency transceiver chip 280 may be located near the first main board 220 to the main radio frequency module 230 and the first radio frequency diversity module 250 .

As an optional implementation, the circuit board structure also includes a global positioning system GPS module 291 and a wireless fidelity WIFI module 292, the GPS module 291 and the WIFI module 292 are fixed on the second motherboard 270, and are electrically connected to the radio frequency transceiver chip 280 connect. Wherein, the GPS module 291 and the WIFI module 292 can be respectively located on the second main board 270 near the GPS antenna radiator 293 and the WIFI antenna radiator 294, so as to shorten the distance between the GPS module 291 and the WIFI module 292 and its antenna radiator , and then the cables between the GPS module 291 and the WIFI module 292 and their antenna radiators can be removed, and connected by metal shrapnel, thereby reducing signal loss on the cables.

As an optional embodiment, the first main board 220 and the second main board 270 are hard boards, and the first main board 220 and the second main board 270 can be connected by a flexible board 295; the radio frequency main set module 230 and the main set antenna The feed point 221 can be connected by a shrapnel; the first radio frequency diversity module 250 and the second radio frequency diversity module 260 can be connected by a cable; where the cable can be a coaxial cable or a waveguide cable, which material is used for the connection , the embodiment of the present utility model is not limited.

Please refer to FIG. 3 . FIG. 3 is a schematic diagram of an antenna device disclosed in an embodiment of the present invention. The antenna device is applied to a mobile terminal. The antenna device includes the circuit board structure described in FIG. 1 or the circuit board structure described in FIG. 2. In FIG. 3, the circuit board structure described in FIG. 2 is taken as an example, and the antenna device also includes The main antenna radiator is electrically connected to the main antenna feed point 221 .

In this implementation manner, the main antenna radiator is close to the first main board 220 . The antenna radiator of the main set includes a mid-low frequency branch 311 and a high frequency branch 312 . The middle and low frequency branch 311 is responsible for transmitting or receiving medium and low frequency signals, and the high frequency branch 312 is responsible for transmitting or receiving high frequency signals.

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of a mobile terminal disclosed in an embodiment of the present invention. The mobile terminal includes the antenna device described in FIG. 3 , and the mobile terminal further includes a terminal body 410 , and the antenna device is fixed to the terminal body 410 .

As an optional implementation manner, the terminal body 410 is composed of a housing, a display screen, and functional components such as a battery. The terminal body 410 includes a bottom end and a top end disposed opposite to the bottom end, the first main board 220 is fixed on the bottom end, and the main antenna radiator is fixed on the bottom end.

In the circuit board structure, antenna device and mobile terminal of the present utility model, the baseband module, the radio frequency main set module and the main set antenna feed point are arranged on the first main board, and the first main board is fixed on the bottom of the mobile terminal, so that the main radio frequency Cables can be directly connected between the collection module and the main collection antenna feed point, which avoids the attenuation caused by the transmission of radio frequency signals through a certain length of cable, and improves the performance of the antenna.

The above are only preferred specific implementations of the utility model, but the scope of protection of the utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of the technical scope disclosed in the embodiments of the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A circuit board structure, characterized in that it is applied to a mobile terminal, the mobile terminal includes a terminal body, the terminal body includes a top end and a bottom end arranged relative to the top end, and the circuit board structure includes a first Main board, radio frequency main set module and baseband module, the first main board is fixed on the bottom, wherein: The first main board is provided with a main set antenna feed point, the radio frequency main set module and the baseband module are fixed on the first main board, and the radio frequency main set module is electrically connected to the main set antenna feed point electric point. 2. The circuit board structure according to claim 1, wherein the circuit board structure also includes a radio frequency diversity module, and the circuit board structure also includes a second main board arranged relative to the first main board, the The second main board is fixed on the top, the second main board is provided with a diversity antenna feed point, the radio frequency diversity module is fixed on the second main board, and the radio frequency diversity module is electrically connected to the diversity antenna feed point. 3. The circuit board structure according to claim 1, characterized in that, the circuit board structure also includes a first radio frequency diversity module and a second radio frequency diversity module, and the circuit board structure also includes The second main board is set, the second main board is fixed on the top, the diversity antenna feed point is arranged in the second main board, the first radio frequency diversity module is fixed on the first main board, the The second radio frequency diversity module is fixed on the second main board, and the first radio frequency diversity module is electrically connected to the second radio frequency diversity module, and the second radio frequency diversity module is electrically connected to the diversity antenna feed point. 4. The circuit board structure according to claim 3, characterized in that, the circuit board structure also includes a radio frequency transceiver chip, the radio frequency transceiver chip is fixed on the first motherboard and electrically connected to the radio frequency master module and The first radio frequency diversity module. 5. The circuit board structure according to claim 4, wherein the first main board and the second main board are hard boards, and the first main board and the second main board are connected by a flexible board . 6 . The circuit board structure according to claim 5 , wherein the radio frequency main set module is connected to the main set antenna feeding point through a shrapnel. 6 . 7. The circuit board structure according to claim 6, wherein the first radio frequency diversity module is connected to the second radio frequency diversity module through a cable. 8. An antenna device, characterized in that it is applied to a mobile terminal, the antenna device includes the circuit board structure according to any one of claims 1 to 7, the antenna device also includes a main antenna radiator, the The main antenna radiator is electrically connected to the main antenna feed point. 9. A mobile terminal, characterized in that the mobile terminal comprises the antenna device according to claim 8, the mobile terminal further comprises the terminal body, and the antenna device is fixed to the terminal body. 10. The mobile terminal according to claim 9, wherein the terminal body includes the bottom end and the top end disposed opposite to the bottom end, the first main board is fixed to the bottom end, and the The main antenna radiator is fixed on the bottom end.