CN106887700A - Board structure of circuit, antenna assembly and mobile terminal - Google Patents

Abstract

The invention discloses a circuit board structure, an antenna device and a mobile terminal. The circuit board structure is used for a mobile terminal. The bottom end of the mobile terminal is provided with a main antenna radiator. The circuit board structure includes a circuit board, A radio frequency main collection module and a radio frequency diversity module, the circuit board is provided with a first radio frequency area close to the main collection antenna radiator, and a main collection antenna feed point and a diversity antenna feed point are arranged in the first radio frequency area The radio frequency main collection module and the radio frequency diversity module are both fixed in the first radio frequency area, and are respectively electrically connected to the main collection antenna feed point and the diversity antenna feed point. The cable is omitted between the radio frequency main collection module and the main collection antenna feed point, and the cable is omitted between the radio frequency diversity module and the diversity antenna feed point, which reduces the attenuation of radio frequency signals, Improved antenna performance.

Description

Circuit board structure, antenna device and mobile terminal

technical field

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

Background technique

At present, the antenna of the mobile phone separates the radio frequency module and the antenna feed point, and the radio frequency signal is transmitted from the radio frequency module to the antenna feed point through a cable. Due to the long distance between the RF module and the antenna feed point, the length of the cable is relatively long, which causes attenuation of the RF signal transmitted by the cable and affects the performance of the antenna.

Contents of the invention

The invention provides a circuit board structure for improving antenna performance, an antenna device and a mobile terminal.

The present invention provides a circuit board structure, wherein the circuit board structure includes a circuit board, a radio frequency main collection module and a radio frequency diversity module, and the circuit board is provided with a first radio frequency area close to the main collection antenna radiator, so The main set antenna feed point and the diversity antenna feed point are set in the first radio frequency area, the radio frequency main set module and the radio frequency diversity module are fixed in the first radio frequency area, and are respectively electrically connected to the main set antenna The collection antenna feed point and the diversity antenna feed point.

The present invention provides an antenna device, wherein the antenna device includes the above-mentioned circuit board structure, and the antenna device further includes a main antenna radiator and a diversity antenna radiator, and the main antenna radiator and the diversity antenna The radiators are respectively electrically connected to the feed point of the main antenna and the feed point of the diversity antenna.

The present invention also provides a mobile terminal, wherein the mobile terminal includes the antenna device, the mobile terminal also includes a terminal body, the circuit board, the main antenna radiator and the diversity antenna radiator All are fixed on the terminal body.

In the circuit board structure, antenna device and mobile terminal of the present invention, the circuit board is provided with a first radio frequency area close to the main set antenna, and the main set antenna feed point and the diversity antenna feed point are arranged in the first radio frequency area. Electrical point, the radio frequency main collection module and the radio frequency diversity module are both fixed in the first radio frequency area, so that cables are omitted between the radio frequency main collection module and the main collection antenna feed point, and the Cables are omitted between the radio frequency diversity module and the feed point of the diversity antenna, which reduces attenuation of radio frequency signals and improves antenna performance.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is the schematic diagram of circuit board structure provided by the present invention;

Fig. 2 is another schematic diagram of the circuit board structure provided by the present invention;

Fig. 3 is another schematic diagram of the circuit board structure provided by the present invention;

Fig. 4 is another schematic diagram of the circuit board structure provided by the present invention;

Fig. 5 is another schematic diagram of the circuit board structure provided by the present invention;

Fig. 6 is another schematic diagram of the circuit board structure provided by the present invention;

Fig. 7 is a schematic diagram in one embodiment of the circuit board structure provided by the present invention;

Fig. 8 is a schematic diagram in one embodiment of the circuit board structure provided by the present invention;

Fig. 9 is a schematic diagram of the antenna device provided by the present invention;

Fig. 10 is a schematic diagram of a mobile terminal provided by the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present invention, it should be noted that unless otherwise specified 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 detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Please refer to FIG. 1 , a circuit board structure 100 provided by the present invention is used for a mobile terminal, and a main antenna radiator 210 is provided at the bottom of the mobile terminal. The circuit board structure 100 includes a circuit board 10, a radio frequency main collection module 20 and a radio frequency diversity module 30, the circuit board 10 is provided with a first radio frequency area 11 for approaching the main collection antenna radiator 210, the first radio frequency area 11 is provided with a main set antenna feed point 111 and a diversity antenna feed point 112, the radio frequency main set module 20 and the radio frequency diversity module 30 are fixed in the first radio frequency area 11, and are respectively electrically connected to the The feed point 111 of the main set antenna and the feed point 112 of the diversity antenna. It can be understood that the circuit board structure 100 is applied to a mobile terminal, which may be a mobile phone, a tablet computer, a notebook computer, and the like.

The circuit board 10 is provided with a first radio frequency area 11 close to the main antenna radiator 210, and the first radio frequency area 11 is provided with a main antenna feed point 111 and a diversity antenna feed point 112, the Both the radio frequency main collection module 20 and the radio frequency diversity module 30 are fixed in the first radio frequency area 11, so that cables are omitted between the radio frequency main collection module 20 and the main collection antenna feeding point 111, and the Cables are omitted between the radio frequency diversity module 30 and the diversity antenna feed point 112, which reduces attenuation of radio frequency signals and improves antenna performance.

In this embodiment, the circuit board 10 is composed of a substrate and circuits arranged on the substrate. The first radio frequency area 11 is an area where electronic components are arranged on one side of the circuit board 10 . The boundary of the first radio frequency area 11 is defined as the main radio frequency module 20 , the radio frequency diversity module 30 , the main antenna feed point 111 and the diversity antenna feed point 112 . When the circuit board 10 is fixed on the mobile terminal, the first radio frequency area 11 is close to the main antenna radiator 210 of the mobile terminal. It can be understood that the circuit board 10 has other areas outside the first radio frequency area 11, and the first radio frequency area 11 is close to the main antenna radiator 210, which means that the first area 11 reaches the main antenna radiation The distance from the body 210 is smaller than the distance from other areas of the circuit board 10 to the main antenna radiator 210 . The distance from the first radio frequency area 11 to the main antenna radiator 210 is reduced, and the cable length between the first radio frequency area 11 and the main antenna radiator 210 is reduced or the first radio frequency area 11 to the main antenna radiator 210 is omitted. The cable of the main antenna radiator 210 . The main antenna feed point 111 may be electrically connected to the metal shrapnel of the radio frequency signal line. The main antenna feed point 111 sends the main radio frequency signal to the main antenna radiator 210 by elastically colliding with the main antenna radiator 210 . The cables for transmitting radio frequency signals are omitted between the main antenna feed point 111 and the main antenna radiator 210, which reduces radio frequency signal attenuation and improves antenna performance. The main antenna feed point 111 may be located at an edge of the first radio frequency region 11 close to the main antenna radiator 210 . The diversity antenna feeding point 112 may also be a metal shrapnel electrically connected to a radio frequency signal line. The diversity antenna feed point 111 is connected to the diversity antenna radiator through elastic interference with the diversity antenna radiator or a cable, and transmits the diversity radio frequency signal to the diversity antenna radiator. The diversity antenna feed point 112 may be located at an edge of the first radio frequency zone 11 close to the main antenna radiator 210 , that is, it is parallel to the main antenna feed point 111 . Of course, in other implementation manners, the main antenna feed point 111 may also be located at the edge of the first radio frequency area 11 away from the main antenna, and the diversity antenna feed point 112 may be located at the first radio frequency area 11. Zone 11 is away from the edge of the main antenna.

In this embodiment, the radio frequency master module 20 is composed of a plurality of electronic components. The radio frequency main module 20 is responsible for feeding radio frequency signals to the main antenna radiator 210 , and the radio frequency main module 20 is a radio frequency feeding source of the main antenna radiator 210 . The radio frequency diversity module 30 is composed of multiple electronic components. The radio frequency diversity module 30 is responsible for feeding radio frequency signals to the diversity antenna, that is, the radio frequency diversity module 30 is a radio frequency feeding source of the diversity antenna. The plurality of electronic components of the radio frequency main collection module 20 and the plurality of electronic components of the radio frequency diversity module 30 are scattered and arranged in the first radio frequency area 11, making full use of the advantages of the first radio frequency area 11 Using the area minimizes the area of the first radio frequency region 11 , thereby fully optimizing the volume of the circuit board 10 . Since the radio frequency main set module 20 and the main set antenna feed point 111 are both located in the first radio frequency zone 11, the distance between the radio frequency main set module 20 and the main set antenna feed point 111 is decrease. The radio frequency main set module 20 and the main set antenna feed point 111 may be directly electrically connected, or may be electrically connected through a short cable, that is, the number of connections between the radio frequency main set module 20 and the described radio frequency main set module 20 may be reduced. The cable length of the main antenna feed point 111 , or omit the cable connecting the radio frequency main module 20 and the main antenna feed point 111 . The radio frequency diversity module 30 and the diversity antenna feed point 112 can be directly electrically connected, and can also be electrically connected through a short cable, which can reduce the number of connections between the radio frequency diversity module 30 and the diversity antenna feed point 112. The cable length of the electrical point 112, or omit the cable connecting the radio frequency diversity module 30 and the diversity antenna feed point 112.

Further, please refer to FIG. 2 , the circuit board structure 100 also includes a radio frequency transceiver chip 40, the radio frequency transceiver chip 40 is fixed on the first radio frequency area 11 and is electrically connected to the radio frequency main assembly module 20 and the radio frequency Diversity module 30 .

In this embodiment, the radio frequency transceiver chip 40 is responsible for receiving radio frequency signals or sending radio frequency signals. The radio frequency transceiver chip 40 is electrically connected to the radio frequency master module 20 , and obtains radio frequency signals from the radio frequency master module 20 , or sends radio frequency signals to the radio frequency master module 20 . The radio frequency transceiver chip 40 is electrically connected to the radio frequency diversity module 30 , and obtains radio frequency signals from the radio frequency diversity module 30 . The radio frequency transceiver chip 40 may be located in the first radio frequency zone 11 and is closer to the radio frequency main collection module 20 and the radio frequency diversity module 30 . The boundary of the first radio frequency area 11 may also surround the radio frequency transceiver chip 40 . The cable length between the radio frequency transceiver chip 40 and the radio frequency master module 20 is reduced, or the cable between the radio frequency transceiver chip 40 and the radio frequency master module 20 is removed, so that the radio frequency transceiver The chip 40 reduces the attenuation degree of the radio frequency signal sent and received, which improves the performance of the antenna. The cable length between the radio frequency transceiver chip 40 and the radio frequency diversity module 30 is reduced, or the cable between the radio frequency transceiver chip 40 and the radio frequency diversity module 30 is removed, so that the radio frequency transceiver chip 40 The degree of attenuation of the transmitting and receiving radio frequency signals is reduced, which improves the performance of the antenna. Certainly, in other implementation manners, the radio frequency transceiver chip 40 may also be located close to the edge of the first radio frequency area 11 .

Further, referring to FIG. 3 , the first radio frequency area 11 is further provided with a network antenna feed point 113 , and the network antenna feed point 113 is electrically connected to the radio frequency transceiver chip 40 .

In this embodiment, the cable length between the network antenna feed point 113 and the radio frequency transceiver chip 40 is reduced, or the cable between the network antenna feed point 113 and the radio frequency transceiver chip 40 is removed. cables to reduce radio frequency signal attenuation at the network antenna feed point 113 and improve antenna performance.

Further, referring to FIG. 4 , the circuit board structure 100 also includes a GPS radio frequency module 50, and the circuit board 10 also includes a second radio frequency area 12 set relative to the first radio frequency area 11, and the GPS radio frequency module 50 It is fixed in the second radio frequency zone 12 and electrically connected to the network antenna feeding point 113 . There is a distance between the second radio frequency area 12 and the first radio frequency area 11 . The electronic components in the second radio frequency zone 12 are electrically connected to the electronic components in the first radio frequency zone 11 through cables. The network antenna feeding point 113 is located in the first radio frequency area 11 close to the radio frequency transceiver chip 40 . The second radio frequency area 12 can be located on the circuit board 10 close to the GPS antenna radiator, so that the distance between the GPS radio frequency module 50 and the GPS antenna radiator is reduced, and then the GPS radio frequency module 50 and the GPS antenna radiator can be removed. The cables between the GPS antenna radiators, or reduce the cable length between the GPS radio frequency module 50 and the GPS antenna radiators. The GPS radio frequency module 50 is electrically connected to the network antenna feeding point 113 through a cable.

Further, please refer to FIG. 5 , the circuit board structure 100 further includes a wifi radio frequency module 60 , the wifi radio frequency module 60 is fixed on the second radio frequency area 12 and electrically connected to the network antenna feed point 113 . The second radio frequency area 12 can be located on the circuit board 10 close to the wifi antenna radiator, so that the distance between the wifi radio frequency module 60 and the wifi antenna radiator is reduced, and then the wifi radio frequency module 60 and the wifi antenna radiator can be removed. The cable between the wifi antenna radiator, or reduce the cable length between the wifi radio frequency module 60 and the wifi antenna radiator. The wifi radio frequency module 60 is electrically connected to the network antenna feeding point 113 through a cable.

Further, referring to FIG. 6, the circuit board structure 100 also includes a baseband 70, the baseband 70 is fixed to the second radio frequency area 12, and the baseband 70 is electrically connected to the radio frequency main collection module 20 and the radio frequency diversity module 30.

In this embodiment, the baseband 70 processes radio frequency signals and protocol radio frequency signals for the radio frequency main set module 20 , radio frequency diversity module 30 , GPS radio frequency module 50 and wifi radio frequency module 60 . The baseband 70 is close to the GPS radio frequency module 50 and the wifi radio frequency module 60, thereby reducing the radio frequency signal attenuation of the GPS radio frequency module 50 and the wifi radio frequency module 60, and improving antenna performance.

In one embodiment, as shown in FIG. 6 , the circuit board 10 is a printed circuit board, and the first radio frequency region 11 and the second radio frequency region 12 are respectively located at two ends of the circuit board 10 in the longitudinal direction. The circuit board 10 may be a main board of a mobile terminal. The circuit board 10 is in the shape of a rectangular plate.

In one embodiment, please refer to FIG. 7 , the circuit board 10 is a printed circuit board. The circuit board 10 includes a first small board 10a and a second small board 10b located at both ends in the length direction, and a strip-shaped board 10c connecting the first small board 10a and the second small board 10b. The first radio frequency region 11 and the second radio frequency region 12 are respectively located between the first small plate 10a and the second small plate 10b.

In one embodiment, please refer to FIG. 8, the circuit board 10 includes a first rigid board 13 and a second rigid board 14 arranged opposite to the first rigid board 13, and connected to the first rigid board 13. The flexible board 15 between the hard board 13 and the second hard board 14, the first radio frequency area 11 and the second radio frequency area 12 are respectively arranged on the first hard board 13 and the second Hardboard14.

Referring to FIG. 9, the present invention also provides an antenna device 200, the antenna device 200 includes the circuit board structure 100, the antenna device 200 also includes a main antenna radiator 210 and a diversity antenna radiator 220, the The main antenna 210 and the diversity antenna 220 are electrically connected to the main antenna feeding point 111 and the diversity antenna feeding point 112 respectively.

In this embodiment, the main antenna radiator 210 is close to the first radio frequency zone 11 , and the diversity antenna radiator 220 is close to the second radio frequency zone 12 . The antenna radiator 210 of the main set includes a mid-low frequency branch 211 and a high frequency branch 212 . The mid-low frequency branch 211 is responsible for transmitting or receiving mid-low frequency signals. The high frequency branch 212 is responsible for transmitting or receiving high frequency signals. The diversity antenna radiator 220 is responsible for receiving low frequency signals, intermediate frequency signals and high frequency signals.

Further, the antenna device 200 also includes a GPS+wifi antenna radiator 230 and a wifi antenna radiator 240, the GPS+wifi antenna radiator 230 is electrically connected to the GPS radio frequency module 50 and the wifi radio frequency module 60, and close to the second radio frequency zone 12 . The wifi antenna radiator 240 is electrically connected to the wifi radio frequency module 60 and is close to the second radio frequency area 12 .

Please refer to FIG. 10 , the present invention also provides a mobile terminal 300, the mobile terminal 300 includes a terminal body 310, the circuit board 10, the main antenna radiator 210 and the diversity antenna radiator 220 are fixed on The terminal body 310 .

In this embodiment, the terminal body 310 is composed of functional components such as a housing, a display screen, and a battery. Specifically, the terminal body 310 includes a bottom end 311 and a top end 312 disposed opposite to the bottom end 311, the first radio frequency zone 11 is close to the bottom end 311, and the main antenna radiator 210 is fixed on the The bottom end 311 , the diversity antenna radiator 220 is fixed on the top end 312 .

In the circuit board structure, antenna device and mobile terminal of the present invention, the circuit board is provided with a first radio frequency area close to the main set antenna, and the main set antenna feed point and the diversity antenna feed point are arranged in the first radio frequency area. Electrical point, the radio frequency main collection module and the radio frequency diversity module are both fixed in the first radio frequency area, so that cables are omitted between the radio frequency main collection module and the main collection antenna feed point, and the Cables are omitted between the radio frequency diversity module and the feed point of the diversity antenna, which reduces attenuation of radio frequency signals and improves antenna performance.

The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (10)

1. A circuit board structure, in order to be applied to mobile terminal, the bottom of described mobile terminal is provided with main set antenna radiator, it is characterized in that, described circuit board structure comprises circuit board, radio frequency main set module and radio frequency diversity module, the circuit board is provided with a first radio frequency area close to the main antenna radiator, the first radio frequency area is provided with a main antenna feed point and a diversity antenna feed point, and the radio frequency main set module and the radio frequency diversity module are fixed in the first radio frequency area, and are respectively electrically connected to the main antenna feed point and the diversity antenna feed point. 2. The circuit board structure according to claim 1, characterized in that, the circuit board structure also includes a radio frequency transceiver chip, and the radio frequency transceiver chip is fixed in the first radio frequency area and electrically connected to the radio frequency master module and the RF diversity module. 3 . The circuit board structure according to claim 2 , wherein the first radio frequency area is further provided with a network antenna feed point, and the network antenna feed point is electrically connected to the radio frequency transceiver chip. 4 . 4. circuit board structure according to claim 3, is characterized in that, described circuit board structure also comprises GPS radio frequency module/and wifi radio frequency module, and described circuit board also comprises the second that is arranged relative to described first radio frequency area In the radio frequency area, the GPS radio frequency module/and the wifi radio frequency module are fixed in the second radio frequency area and electrically connected to the network antenna feed point. 5. The circuit board structure according to claim 3, characterized in that, the circuit board structure also includes a baseband, the baseband is fixed in the second radio frequency area, and the baseband is electrically connected to the radio frequency master module, RF diversity module. 6. The circuit board structure according to claim 3, wherein the circuit board is a printed circuit board, and the first radio frequency region and the second radio frequency region are respectively located at both ends of the circuit board in the length direction . 7. The circuit board structure according to claim 3, wherein the circuit board comprises a first hard board and a second hard board arranged opposite to the first hard board, and is connected to the first hard board A flexible board between a rigid board and the second rigid board, the first radio frequency region and the second radio frequency region are respectively arranged on the first rigid board and the second rigid board. 8. An antenna device, characterized in that the antenna device comprises the circuit board structure described in any one of claims 1 to 7, and the antenna device also includes a main antenna radiator and a diversity antenna radiator, the The main antenna radiator and the diversity antenna radiator are electrically connected to the main antenna feed point and the diversity antenna feed point respectively. 9. A mobile terminal, characterized in that, the mobile terminal comprises the antenna device according to claim 8, the mobile terminal further comprises a terminal body, the circuit board, the main antenna radiator and the diversity The antenna radiators are all fixed on the terminal body. 10. The mobile terminal according to claim 9, wherein the terminal body includes a bottom end and a top end disposed opposite to the bottom end, the first radio frequency zone is close to the bottom end, and the main set antenna The radiator is fixed on the bottom end, and the diversity antenna radiator is fixed on the top end.