CN206451812U - Board structure of circuit and terminal - Google Patents

Abstract

The utility model provides a circuit board structure, comprising opposite first ends and second ends, a first circuit board arranged along the first end and a second circuit board arranged along the second end, the first A baseband chip, a diversity module and a diversity antenna feed point are arranged on a circuit board, a radio frequency transceiver, a main collection module and a main collection antenna feed point are arranged on the second circuit board, and the baseband chip is electrically connected to the radio frequency transceiver , the radio frequency transceiver is electrically connected to the diversity module and the main set module, the diversity module is electrically connected to the diversity antenna feed point, and is used to provide a feed current for the diversity antenna feed point, and the main set The module is electrically connected to the main antenna feed point, and is used to provide feeding current for the main antenna feed point. In addition, the utility model also provides a terminal. The circuit board structure and the terminal can reduce the transmission loss and improve the performance of the antenna by shortening the distance for the radio frequency signal to be transmitted from the main set module to the main set antenna feed.

Description

Circuit Board Structure and Terminals

technical field

The utility model relates to the technical field of communication, in particular to a circuit board structure and a terminal.

Background technique

At present, in the layout scheme of the radio frequency module of mobile phones, tablet computers and other terminals, one is to place the main set module and baseband chip on the circuit board at the top of the terminal, and the radio frequency signal is output from the main set module through the form of radio frequency cable It is transmitted to the antenna feed point at the bottom of the terminal, as shown in Figure 1; the other is to make the top circuit board into an L shape, and the main collector module is placed on the side of the L-shaped circuit board facing the bottom of the terminal, and the main collector module outputs The radio frequency signal still needs to be transmitted to the antenna feed point at the bottom of the terminal through the radio frequency cable, as shown in Figure 2. In the above two schemes, when the RF signal is transmitted from the main module to the antenna feed point, it needs to be realized through a long RF cable, and the use of the RF cable will undoubtedly bring a certain insertion loss and affect the terminal antenna. Excellent radio frequency transceiver performance, at the same time, will increase the production cost of the terminal.

Utility model content

In view of the above-mentioned problems existing in the prior art, embodiments of the present utility model provide a circuit board structure and a terminal to reduce the distance between the main set module and the main set antenna feed point in the circuit board structure, thereby reducing the radio frequency signal from the main set The loss between the set module and the feed point of the main set antenna improves the RF transceiver performance of the terminal.

The first aspect of the embodiment of the utility model provides a circuit board structure, including opposite first ends and second ends, a first circuit board arranged along the first end, and a second circuit arranged along the second end board, the first circuit board is provided with a baseband chip, a diversity module and a diversity antenna feed point, and the second circuit board is provided with a radio frequency transceiver, a main collection module and a main collection antenna feed point, and the baseband chip and The radio frequency transceiver is electrically connected, the radio frequency transceiver is electrically connected to the diversity module and the main collection module, and the diversity module is electrically connected to the diversity antenna feed point for feeding the diversity antenna A feeding current is provided, and the main set module is electrically connected to the main set antenna feed point for providing a feed current for the main set antenna feed point.

In one embodiment, the circuit board structure further includes a third circuit board, the first circuit board is connected to the second circuit board through the third circuit board, and the radio frequency transceiver is arranged on the The radio frequency signal line on the third circuit board is electrically connected to the diversity module, and is electrically connected to the baseband chip through a signal bus.

In one embodiment, the third circuit board is connected to the same side of the first circuit board and the second circuit board, and forms a half together with the first circuit board and the second circuit board. Frame-shaped circuit board structure.

The second aspect of the embodiment of the utility model provides a terminal, including a first circuit board and a second circuit board, the first circuit board is arranged along the top of the terminal, and the second circuit board is arranged along the bottom of the terminal The first circuit board is provided with a baseband chip, a diversity module and a diversity antenna feed point, and the second circuit board is provided with a radio frequency transceiver, a main collection module and a main collection antenna feed point, and the baseband chip Electrically connected to the radio frequency transceiver, the radio frequency transceiver is electrically connected to the diversity module and the main module, the diversity module is electrically connected to the diversity antenna feed point, and is used to feed the diversity antenna The feed point provides a feed current, and the main set module is electrically connected to the main set antenna feed point, and is used to provide a feed current for the main set antenna feed point.

In one embodiment, the terminal further includes a third circuit board, the first circuit board is connected to the second circuit board through the third circuit board, and the radio frequency transceiver is arranged on the The radio frequency signal lines on the three circuit boards are electrically connected to the diversity module, and are electrically connected to the baseband chip through a signal bus.

In one embodiment, the third circuit board is connected to the same side of the first circuit board and the second circuit board, and forms a half together with the first circuit board and the second circuit board. A frame-shaped circuit board structure, the semi-frame-shaped circuit board structure encloses a half closed space for accommodating the battery of the terminal.

In one embodiment, the third circuit board is a flexible circuit board.

In one embodiment, the terminal further includes a main antenna and a diversity antenna, the main antenna is arranged along the bottom of the terminal, and is electrically connected to the feed point of the main antenna for sending and receiving For the main signal, the diversity antenna is arranged along the top of the terminal and is electrically connected to the feed point of the diversity antenna for receiving the diversity signal.

In one embodiment, the first circuit board is also provided with a GPS module and a Wi-Fi module, and the GPS module communicates with the radio frequency transceiver through a radio frequency signal line arranged on the third circuit board. connected, the Wi-Fi module is electrically connected to the baseband chip.

In one embodiment, the terminal further includes a GPS antenna and a Wi-Fi antenna, the GPS antenna is arranged along the top of the terminal, and is electrically connected to the GPS module for receiving GPS positioning signals, the The Wi-Fi antenna is arranged along the top of the terminal and is electrically connected to the Wi-Fi module for sending and receiving Wi-Fi signals.

The circuit board structure can effectively reduce the transmission of the radio frequency signal output by the main set module to the main set by arranging the radio frequency transceiver and the main set module on the second circuit board at the bottom of the terminal. The distance between the feed point of the integrated antenna can reduce the loss of the radio frequency signal from the main set module to the feed point of the main set antenna, improve the transmission efficiency of the radio frequency signal, and improve the radio frequency transceiver performance of the terminal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a first layout scheme of a radio frequency module of a terminal in the prior art;

FIG. 2 is a schematic diagram of a second layout scheme of a radio frequency module of a terminal in the prior art;

Fig. 3 is a structural schematic diagram of a circuit board structure provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of a first structure of a terminal provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a second structure of a terminal provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. 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.

For the convenience of description, spatially relative terms such as "under", "under", "under", "over", "on" and other spatially relative terms may be used herein to describe an element as shown in the drawings Or the relationship of a feature to another element or feature(s). It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, directly on, or directly on the other element or layer. Connected or coupled to another element or layer, or intervening elements or layers may be present.

It can be understood that the terms used here are only used to describe specific embodiments, not to limit the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly dictates otherwise. Further, when used in this specification, the term "comprises" and/or "comprises" indicates the existence of said features, integers, steps, elements and/or components, but does not exclude one or more other features, integers, The presence or addition of steps, elements, components and/or combinations thereof.

Please refer to FIG. 3 , in one embodiment of the present invention, a circuit board structure 100 is provided, including a first end 101 and a second end 103 opposite to each other, a first circuit board 110 arranged along the first end 101 and The second circuit board 130 is disposed along the second end 103 . The first circuit board 110 is provided with a baseband chip 111, a diversity module 113 and a diversity antenna feed point 115, and the second circuit board 130 is provided with a radio frequency transceiver 131, a main set module 133 and a main set antenna feed point 135 . The baseband chip 111 is electrically connected to the radio frequency transceiver 131 , and the radio frequency transceiver 131 is electrically connected to the diversity module 113 and the main collection module 133 . The diversity module 113 is electrically connected to the diversity antenna feed point 115 and is used for providing a feed current for the diversity antenna feed point 115 . The main set module 133 is electrically connected to the main set antenna feed point 135 , and is used to provide a feed current for the main set antenna feed point 135 . It can be understood that the number of the diversity antenna feed point 115 and the number of the main antenna feed point 135 may be one or more.

In this embodiment, the circuit board structure 100 can be applied to terminals such as mobile phones and tablet computers. The first circuit board 110 may be arranged along the top end of the terminal, and the second circuit board 130 may be arranged along the bottom end of the terminal. The first circuit board 110 and the second circuit board 130 are arranged at a distance from each other, and the battery of the terminal may be arranged between the first circuit board 110 and the second circuit board 130 . It can be understood that the top end of the terminal is the end where the earpiece is set, and the bottom end of the terminal is the end where the main call microphone is set.

In one embodiment, the circuit board structure 100 further includes a third circuit board 150, the first circuit board 110 is connected to the second circuit board 130 through the third circuit board 150, and the radio frequency transceiver The device 131 is electrically connected to the diversity module 113 through a radio frequency signal line arranged on the third circuit board 150 , and is electrically connected to the baseband chip 111 through a signal bus 151 . Wherein, the signal bus 151 may be arranged on the third circuit board 150 , or may be separately arranged on the flexible circuit board.

In one embodiment, the third circuit board 150 is connected to the same side of the first circuit board 110 and the second circuit board 130, and is connected to the first circuit board 110 and the second circuit board 130. Boards 130 collectively form a half-frame circuit board structure. The battery of the terminal can be accommodated in the semi-enclosed space surrounded by the semi-frame-shaped circuit board structure. In this embodiment, the width range of the third circuit board 150 is approximately 3.5 mm˜4 mm.

In one implementation manner, the diversity antenna feed point 115 may be set on the side of the first circuit board 110 facing the top of the terminal, that is, set along the first end 101 of the circuit board structure 100, for The diversity antenna is connected to receive diversity signals through the diversity antenna. The main antenna feed point 135 may be arranged on the side of the second circuit board 130 facing the bottom end of the terminal, that is, arranged along the second end 103 of the circuit board structure 100, for connecting the main antenna, to send and receive a main set signal through the main set antenna.

It can be understood that by arranging the radio frequency transceiver 131 and the main set module 133 on the second circuit board 130 close to the bottom of the terminal, the output of the main set module 133 and the feed point of the main set antenna can be effectively shortened. 135, the RF signal output end of the main set module 133 can be directly connected to the main set antenna through the antenna shrapnel, so that there is no need to set a radio frequency cable between the main set module 133 and the main set antenna feed point 135, which can avoid the The insertion loss caused by the use of radio frequency cables improves the over-the-air (OTA) test performance of the antenna.

Simultaneously, the radio frequency transceiver 131 and the diversity module 113 are connected by the radio frequency signal line on the 3rd circuit board 150, because the diversity antenna connected with the diversity module 113 is only used for receiving the diversity signal, and the low noise amplifier in the diversity module ( A Low Noise Amplifier (LNA) is set next to the diversity antenna, and the insertion loss caused by the signal routing between the LNA and the radio frequency transceiver 131 is canceled by the LNA, so that the reception performance of the diversity antenna is basically not affected. In this embodiment, by arranging the radio frequency transceiver 131 and the main set module 133 on the second circuit board 130 next to the main set antenna, the radio frequency performance of the main set antenna of the terminal can be improved by about 1 dB.

In one embodiment, the first circuit board 110 is also provided with a GPS module 117 and a Wi-Fi module 119, and the GPS module 117 communicates with the third circuit board 150 through a radio frequency signal line. The radio frequency transceiver 131 is electrically connected, and the Wi-Fi module 119 is electrically connected to the baseband chip 111 . The GPS module 117 is used for connecting a GPS antenna to receive GPS positioning signals through the GPS antenna. The Wi-Fi module 119 is used to connect to a Wi-Fi antenna, so as to send and receive Wi-Fi signals through the Wi-Fi antenna.

Please refer to FIG. 4. In one embodiment of the present invention, a terminal 200 is provided, including a first circuit board 210 and a second circuit board 230. The first circuit board 210 is arranged along the top of the terminal, and the The second circuit board 230 is arranged along the bottom end of the terminal, the first circuit board 210 is provided with a baseband chip 211, a diversity module 213 and a diversity antenna feed point 215, and the second circuit board 230 is provided with a radio frequency transceiver device 231, main set module 233 and main set antenna feed point 235, the baseband chip 211 is electrically connected to the radio frequency transceiver 231, and the radio frequency transceiver 231 is electrically connected to the diversity module 213 and the main set module 233 connected, the diversity module 213 is electrically connected to the diversity antenna feed point 215, and is used to provide feed current for the diversity antenna feed point 215, and the main set module 233 is electrically connected to the main set antenna feed point 235 , used to provide feed current for the main antenna feed point 135 .

Wherein, the terminal may be a mobile phone, a tablet computer, and the like. The first circuit board 210 and the second circuit board 230 may be two independent circuit boards, or may be two areas on the same circuit board that are close to the top end and the bottom end of the terminal respectively. The first circuit board 210 and the second circuit board 230 are arranged at a distance from each other, and the two can be electrically connected through a high-speed signal bus.

In one embodiment, the terminal 200 further includes a third circuit board 250, the first circuit board 210 is connected to the second circuit board 230 through the third circuit board 250, and the radio frequency transceiver 231 The third circuit board 250 is electrically connected to the diversity module 213 through a radio frequency signal line, and is electrically connected to the baseband chip 211 through a signal bus 251 . Wherein, the signal bus 251 can be arranged on the third circuit board 250 , or can be arranged separately on the flexible circuit board. In this embodiment, the width range of the third circuit board 250 is approximately 3.5 mm˜4 mm.

In one embodiment, the third circuit board 250 is connected to the same side of the first circuit board 210 and the second circuit board 230, and is connected to the first circuit board 210 and the second circuit board 210. The boards 230 together form a semi-frame-shaped circuit board structure, and the semi-frame-shaped circuit board structure encloses a semi-enclosed space for accommodating the battery (not shown) of the terminal 200 . In one embodiment, the third circuit board 250 may be a flexible circuit board.

In one embodiment, the terminal 200 further includes a main antenna 220 and a diversity antenna 240, the main antenna 220 is arranged along the bottom end of the terminal, and is electrically connected to the main antenna feed point 235, Used for sending and receiving main set signals, the diversity antenna 240 is arranged along the top of the terminal, and is electrically connected with the diversity antenna feed point 215, and is used for receiving diversity signals.

It can be understood that the diversity module 113 may include a diversity antenna filter (not shown in the figure) and a diversity antenna amplifier (not shown in the figure), and the diversity antenna filter is used to filter out clutter in the diversity signal received by the diversity antenna, The diversity antenna amplifier is coupled between the diversity antenna filter and the radio frequency transceiver 131, and is used to amplify the filtered diversity signal, and transmit the amplified diversity signal to the third circuit board 150 The radio frequency signal line on the radio frequency is transmitted to the radio frequency transceiver 131.

The main set module 133 may include a main set antenna filter (not shown) and a main set antenna amplifier (not shown), and the main set antenna filter is used to filter out the main set signal received by the main set antenna clutter, the main set antenna amplifier is coupled between the main set antenna filter and the radio frequency transceiver 131, and is used to amplify the filtered main set signal, and amplify the main set signal by The radio frequency signal line on the third circuit board 150 is transmitted to the radio frequency transceiver 131 .

It can be understood that the embodiment of the present invention does not limit the specific structural forms of the main antenna 220 and the diversity antenna 240. For example, both the main antenna 220 and the diversity antenna 240 may include a plurality of radiators, and the radiators may be antenna radiators independently arranged inside the terminal or multiplexing the antenna radiation formed by the metal frame of the terminal. body. The main set antenna 220 and the diversity antenna 240 can be but not limited to monopole antenna, loop (Loop) antenna, inverted F antenna (Inverted F-shaped Antenna, IFA), planar inverted F antenna (Planar Inverted F-shaped Antenna, PIFA) and other antenna forms.

In this embodiment, since the main antenna 220 is arranged on the side close to the bottom of the terminal 200, the distance between the main antenna 220 and the user's head can be increased when the terminal is in a talking state, thereby Reduce the radiation to the user's head, and at the same time reduce the impact of the head and hand holding on the antenna radiation performance in the call state, and improve the call signal quality of the terminal.

In one embodiment, the first circuit board 210 is also provided with a GPS module 217 and a Wi-Fi module 219, and the GPS module 217 communicates with the third circuit board 250 through a radio frequency signal line The radio frequency transceiver 231 is electrically connected, and the Wi-Fi module 219 is electrically connected to the baseband chip 211. The terminal also includes a GPS antenna 260 and a Wi-Fi antenna 270. The GPS antenna 260 is arranged along the top of the terminal and is electrically connected to the GPS module 217 for receiving GPS positioning signals. The Wi-Fi The antenna 270 is arranged along the top of the terminal and is electrically connected to the Wi-Fi module 219 for sending and receiving Wi-Fi signals. It can be understood that since both Bluetooth and Wi-Fi can work in the 2.4GHz frequency band, the Wi-Fi module 219 can also be multiplexed as a Bluetooth module, and accordingly, the Wi-Fi antenna 270 can also be multiplexed as a Bluetooth antenna .

In this embodiment, the top end of the terminal 200 is the end where the earpiece is set, and the bottom end of the terminal is the end where the main call microphone is set, that is, the end where the main key (Home key) is set. As shown in FIG. 5 , 200 is the terminal, 201 is the handset, 202 is the top of the terminal, 203 is the main key, 204 is the bottom of the terminal, and 205 is the battery of the terminal. The positions of the first circuit board 210 , the second circuit board 230 and the third circuit board 250 relative to the top end and the bottom end of the terminal 200 are shown as dotted boxes in FIG. 5 . It can be understood that since the first circuit board 210, the second circuit board 230, the third circuit board 250 and the battery 205 are actually enclosed in the housing of the terminal 200, only the dotted line frame is used in FIG. Indicate their relative positions. For the positional relationship of the components on the first circuit board 210, the second circuit board 230, and the third circuit board 250 and the positional relationship of the antennas of the terminal 200, reference may be made to the relevant description in the embodiment shown in FIG. , which will not be repeated here.

The terminal 200 can effectively reduce the transmission of the radio frequency signal output by the main module 233 to The distance between the main set antenna feed point 235 reduces the loss of the radio frequency signal from the main set module 233 to the main set antenna feed point 235, which is conducive to improving the transmission efficiency of the radio frequency signal and improving the radio frequency transceiver performance of the terminal.

It can be understood that what is disclosed above is only a preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited by this. Those of ordinary skill in the art can understand all or part of the processes for realizing the above embodiments, and The equivalent changes made according to the claims of the utility model still belong to the scope covered by the utility model.

Claims (10)

1. a kind of board structure of circuit, it is characterised in that the set including relative first end and the second end, along the first end Baseband chip, diversity mould are provided with one circuit board and the second circuit board set along second end, the first circuit board RF transceiver, main collection module and main collection antenna feed point are provided with block and diversity antenna feed point, the second circuit board, it is described Baseband chip is electrically connected with the RF transceiver, and the RF transceiver is electrically connected with the diversity module and the main collection module Connect, the diversity module is electrically connected with the diversity antenna feed point, for providing feed current for the diversity antenna feed point, institute State main collection module to electrically connect with the main collection antenna feed point, for providing feed current for the main collection antenna feed point.

2. board structure of circuit as claimed in claim 1, it is characterised in that the board structure of circuit also includes tertiary circuit plate, The first circuit board is connected by the tertiary circuit plate with the second circuit board, and the RF transceiver is by being laid in Rf signal line on the tertiary circuit plate is electrically connected with the diversity module, and passes through signal bus and the baseband chip Electrical connection.

3. board structure of circuit as claimed in claim 2, it is characterised in that the tertiary circuit plate is connected to first circuit The homonymy of plate and the second circuit board, and collectively form half frame shape electricity with the first circuit board and the second circuit board The hardened structure in road.

4. a kind of terminal, it is characterised in that including first circuit board and second circuit board, the first circuit board is along the terminal Top set, bottom of the second circuit board along the terminal is set, be provided with the first circuit board baseband chip, RF transceiver, main collection module and main collection antenna feed are provided with diversity module and diversity antenna feed point, the second circuit board Point, the baseband chip is electrically connected with the RF transceiver, the RF transceiver and the diversity module and the main collection Module is electrically connected, and the diversity module is electrically connected with the diversity antenna feed point, for providing feedback for the diversity antenna feed point Electric current, the main collection module is electrically connected with the main collection antenna feed point, for providing feed electricity for the main collection antenna feed point Stream.

5. terminal as claimed in claim 4, it is characterised in that the terminal also includes tertiary circuit plate, first circuit Plate is connected by the tertiary circuit plate with the second circuit board, and the RF transceiver is by being laid in the tertiary circuit Rf signal line on plate is electrically connected with the diversity module, and is electrically connected by signal bus with the baseband chip.

6. terminal as claimed in claim 5, it is characterised in that the tertiary circuit plate is connected to the first circuit board and institute The homonymy of second circuit board is stated, and it is hardened with the first circuit board and the second circuit board to collectively form half frame shape circuit Structure, the half frame shape board structure of circuit surrounds a hemi-closure space, the battery for housing the terminal.

7. terminal as claimed in claim 5, it is characterised in that the tertiary circuit plate is flexible PCB.

8. the terminal as described in any one of claim 5 to 7, it is characterised in that the terminal also includes main collection antenna and diversity Antenna, bottom of the main collection antenna along the terminal is set, and is electrically connected with the main collection antenna feed point, for sending and connecing Main collection signal is received, top of the diversity antenna along the terminal is set, and is electrically connected with the diversity antenna feed point, for connecing Receive diversity signal.

9. terminal as claimed in claim 8, it is characterised in that GPS module and Wi-Fi are additionally provided with the first circuit board Module, the GPS module is electrically connected by the rf signal line being laid on the tertiary circuit plate with the RF transceiver, The Wi-Fi module is electrically connected with the baseband chip.

10. terminal as claimed in claim 9, it is characterised in that the terminal also includes gps antenna and Wi-Fi antennas, described Top of the gps antenna along the terminal is set, and is electrically connected with the GPS module, for receiving GPS location signal, the Wi- Top of the Fi antennas along the terminal is set, and is electrically connected with the Wi-Fi module, for sending and receiving Wi-Fi signal.