CN111193100A

CN111193100A - Electronic device

Info

Publication number: CN111193100A
Application number: CN202010105528.0A
Authority: CN
Inventors: 周林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-05-22

Abstract

An electronic device includes a middle frame, a first excitation source, a second excitation source, and an isolation circuit. The middle frame comprises a middle frame body and a frame connected to the periphery of the middle frame body. The periphery of center body is seted up and is run through the first gap on two relative surfaces of center body, still has seted up the second gap on the frame adjacent with first gap, and first gap of second gap intercommunication, first gap and second gap are cut apart into first minor matters and second minor matters with the frame. The first excitation source is electrically connected with the first branch, and feeds a first excitation current into the first branch so as to excite the first branch to serve as a first antenna of the radiator to resonate in a WIFI frequency band and a GPS L1 frequency band. The second excitation source is electrically connected with the second branch, feeds a second excitation current into the second branch, and excites the second branch to serve as a second antenna of the radiator to resonate in a frequency band of the GPS L5. The isolation circuit is electrically connected with the second branch knot and isolates the interference of the first antenna to the second antenna. The electronic equipment has a good communication effect.

Description

Electronic device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device.

Background

With the development of mobile communication technology, smart phones with communication functions are more and more favored by users. Currently, a Global Positioning System (GPS) antenna in a mobile phone currently in the industry mainly has two frequency bands, i.e., an L1 frequency band and an L5 frequency band. Most of the smart phones on the market can only support the L1 frequency band, so the positioning and navigation accuracy of the smart phones on the market is not high. Meanwhile, the smart phone supporting the L1 frequency band and the L5 frequency band has higher positioning and navigation accuracy, however, the communication performance of the antenna supporting the L5 frequency band is poor because the smart phone supporting the L5 frequency band is easily interfered by other frequency bands or other devices in the smart phone.

Disclosure of Invention

The application provides an electronic device, including:

the middle frame comprises a middle frame body and a frame connected to the periphery of the middle frame body, a first gap penetrating through two opposite surfaces of the middle frame body is formed in the periphery of the middle frame body, a second gap is further formed in the frame adjacent to the first gap and communicated with the first gap, and the frame is divided into a first branch and a second branch by the first gap and the second gap;

the first excitation source is electrically connected with the first branch knot and used for feeding a first excitation current into the first branch knot so as to excite the first antenna, serving as a radiator, of the first branch knot to resonate in a WIFI frequency band and a GPS L1 frequency band;

the second excitation source is electrically connected with the second branch knot and used for feeding a second excitation current into the second branch knot and exciting a second antenna of which the second branch knot is used as a radiating body to resonate in a GPS L5 frequency band; and

and the isolation circuit is electrically connected with the second branch knot and is used for isolating the interference of the first antenna to the second antenna.

The application also provides an electronic device, which comprises a housing, wherein the housing comprises a body and a frame connected to the periphery of the body, the body comprises a first surface and a second surface which are oppositely arranged, the periphery of the body is provided with a first gap which penetrates through the first surface and the second bearing surface, the first gap isolates at least one part of the frame from the body, the frame is provided with a second gap which is communicated with the first gap, the frame is divided into a first part and a second part by the first gap and the second gap, the electronic device further comprises a first excitation source, a second excitation source and an isolation circuit, the first excitation source is electrically connected with one end of the first part which is adjacent to the second gap, the second excitation source is electrically connected with one end of the isolation circuit which is adjacent to one end of the second part which is adjacent to the second gap, the isolation circuit is used for preventing the first antenna where the first excitation source is located from being isolated from the interference surface of the second antenna where the second excitation source is located.

The electronic equipment provided by the embodiment of the application divides the first branch of the first antenna and the second branch of the second antenna through the same gap on the frame, and simultaneously isolates the interference of the first antenna to the second antenna through the isolating circuit, thereby ensuring that the first antenna and the second antenna can still normally work even if the first branch of the first antenna and the second branch of the second antenna are only divided through a small number of gaps. The isolation circuit is arranged to isolate the first antenna from the second antenna, thereby facilitating the improvement of the communication performance of the second antenna. In addition, in the electronic device in the embodiment of the application, the number of the gaps on the frame of the middle frame is small, so that the structural strength of the middle frame is improved, the processing time can be saved, and the appearance integrity of the electronic device can be better when the surface of the frame, which deviates from the middle frame body, is used as a part of the appearance surface of the electronic device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic perspective view of an angle of a middle frame in an electronic device according to an embodiment of the present disclosure.

Fig. 3 is a perspective view of the middle frame shown in fig. 2 at another angle.

Fig. 4 is a top view of a middle frame in the electronic device provided in fig. 1 in an embodiment.

Fig. 5 is a schematic diagram of an antenna composed of a first branch and a second branch in a middle frame.

Fig. 6 is a top view of a middle frame in the electronic device provided in fig. 1 in another embodiment.

Fig. 7 is a circuit diagram of an isolation circuit according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a first antenna according to an embodiment of the present application.

Fig. 9 is a schematic cross-sectional structure view of an electronic device along the line I-I according to another embodiment of the present application.

Fig. 10 is a simulation diagram of the isolation between the first antenna and the second antenna according to the present application.

Fig. 11 is a schematic diagram of radiation efficiency of the first antenna of the present application.

Fig. 12 is a schematic view of the radiation efficiency of the second antenna of the present application.

Fig. 13 is a schematic rear view of an electronic device according to an embodiment of the present application.

Fig. 14 is a schematic view of a battery cover from an inner surface in an electronic device according to the present application.

Fig. 15 is a schematic sectional view taken along line II-II in fig. 13.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides an electronic device 1, which electronic device 1 may be, but is not limited to, any device having a communication function. For example: the system comprises intelligent equipment with a communication function, such as a tablet Computer, a mobile phone, an electronic reader, a remote controller, a Personal Computer (PC), a notebook Computer, vehicle-mounted equipment, a network television, wearable equipment and the like. In the schematic diagram of the embodiment, the electronic device 1 is taken as a mobile phone for example. Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present disclosure; fig. 2 is a schematic perspective view of an angle of a middle frame in an electronic device according to an embodiment of the present application; FIG. 3 is a perspective view of the middle frame shown in FIG. 2 at another angle; FIG. 4 is a top view of a bezel in the electronic device provided in FIG. 1 in one embodiment; fig. 5 is a schematic diagram of an antenna composed of a first branch and a second branch in a middle frame. The electronic device 1 includes a middle frame 10, a first excitation source 220, a second excitation source 340 and an isolation circuit 320. The middle frame 10 includes a middle frame body 110, and a rim 120 connected to a periphery of the middle frame body 110. The periphery of the middle frame body 110 is provided with a first gap 130 penetrating through two surfaces of the middle frame body 110 which are oppositely arranged. A second slit 1221 is further disposed on the frame 120 adjacent to the first slit 130. The first slot 130 and the second slot 1221 divide the bezel 120 into a first branch 210 of the first antenna 20 (see fig. 5) and a second branch 310 of the second antenna 30 (see fig. 5). The first antenna 20 receives and transmits electromagnetic wave signals through the first branch 210, and the second antenna 30 receives and transmits electromagnetic wave signals through the second branch 310. The first excitation source 220 is electrically connected to the first branch 210, and is configured to feed the first excitation current to the first branch 210, so as to excite the first antenna 20, as a radiator, of the first branch 210 to resonate in a first frequency band. The second excitation source 340 is electrically connected to the second stub 310, and is configured to feed a second excitation current to the second stub 310, and excite the second antenna 30, which is the radiator of the second stub 310, to resonate in a second frequency band. The isolation circuit 320 is electrically connected to the second branch 310, and the isolation circuit 320 is used for isolating the interference of the first antenna 20 to the second antenna 30. The first frequency band comprises a WIFI frequency band and a GPS L1 frequency band, and the second frequency band comprises a GPS L5 frequency band. The first frequency band and the second frequency band are described in detail later.

In one embodiment, the frame 120 includes a first frame 121 and a second frame 122 (see fig. 4) connected to each other, and the first slit 130 corresponds to a portion of the first frame 121 and a portion of the second frame 122. Specifically, the electronic device 1 includes a middle frame 10. The middle frame 10 includes a middle frame body 110, a first frame 121, and a second frame 122. The periphery of the middle frame body 110 is provided with a first gap 130 penetrating through two opposite surfaces of the middle frame body 110, and the first gap 130 corresponds to a part of the first frame 121 and a part of the second frame 122. The first frame 121 and the second frame 122 are bent and connected to the periphery of the middle frame body 110, the second frame 122 is provided with a second gap 1221, and the second gap 1221 is provided on the surface of the second frame 122 departing from the middle frame body 110 and is communicated with the first gap 130. The second slot 1221 and the first slot 130 divide the first frame 121 and the second frame 122 into a first branch 210 of the first antenna 20 and a second branch 310 of the second antenna 30, the second antenna 30 further includes an isolation circuit 320, the isolation circuit 320 is electrically connected to the second branch 310, and the isolation circuit 320 is used for isolating interference of the first antenna 20 with the second antenna 30.

It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above-mentioned drawings of the "first frame 121" and the "second frame 122" and the like are used for distinguishing different objects, and are not used for describing a specific order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In another embodiment, referring to fig. 6, fig. 6 is a top view of a middle frame in the electronic device provided in fig. 1 in another embodiment. In this embodiment, the first slit 130 corresponds to only the frame 120 with the second slit 1221.

In the following embodiments, a portion of the first frame 121 and a portion of the second frame 122 corresponding to the first gap 130 are taken as an example for detailed description. In the schematic diagram, the first frame 121 is a long frame of the electronic device, and the second frame 122 is a short frame of the electronic device.

The middle frame 10 is made of a conductive material, for example, the middle frame 10 may be made of, but not limited to, aluminum magnesium alloy. The middle frame body 110 is substantially rectangular. Although the middle frame 10 in the embodiment of the present application is described as including the first frame 121 and the second frame 122 connected to each other, it should be understood that the middle frame 10 may further include other frames 120. In the mobile phone, the middle frame 10 may further include other frames 120 besides the first frame 121 and the second frame 122, and all the frames 120 in the middle frame 10 may be connected in sequence in a manner that they can be folded and connected to the periphery of the frame 120. The middle frame 10 may also be injection molded with an insulating material, which may be, but is not limited to, plastic. The specific structure of the middle frame 10 is not limited in this application, as long as the middle frame 10 includes the middle frame body 110, the first frame 121, and the second frame 122.

In an embodiment, the middle frame 10 may be a unitary structure, in other words, the frame 120 (including but not limited to the first frame 121 and the second frame 122) of the middle frame 10 and the middle frame body 110 are unitary. In other embodiments, the frame 120 and the frame body 110 of the middle frame 10 can be separately prepared and then fixed together, and the frame 120 and the frame body 110 can be fixed together by welding, but not limited thereto.

In an embodiment, the middle frame 10 may be used to carry other components of the electronic device 1, such as a circuit board, a screen, etc. in the electronic device 1. The middle frame body 110 can be used as a ground pole in the electronic device 1, and some components of the electronic device 1 that need to be grounded can be directly or electrically connected with the middle frame body 110 to realize grounding. For example, the circuit board in the electronic device 1 is electrically connected to the middle frame body 110 to be grounded.

Referring to fig. 2 and 3 again, the first gap 130 is opened at a position of the middle frame body 110 adjacent to the first frame 121 and the second frame 122, and the first gap 130 penetrates through two surfaces of the middle frame body 110 in the thickness direction. The second slit 1221 communicates with the first slit 130 and cuts the second frame 122 into two parts. Specifically, the second bezel 122 includes a first surface 1222, a second surface 1223, and a third surface 1224, the first surface 1222 is a surface of the second bezel 122 facing away from the middle frame body 110, the second surface 1223 is disposed opposite to the third surface 1224, the second surface 1223 is connected to the first surface 1222 in a bent manner, and the third surface 1224 is connected to the first surface 1222 in a bent manner. The second slit 1221 penetrates the first surface 1222, and the slit also penetrates the second surface 1223 and the third surface 1224.

The width W1 of the first slit 130 is: w1 is more than or equal to 0.8mm and less than or equal to 2.0 mm. When the width of the first slot 130 is larger, the clearance between the first antenna 20 and the second antenna 30 is larger, and the performance of the first antenna 20 and the second antenna 30 for transmitting and receiving electromagnetic wave signals is better. Accordingly, the width W2 of the second gap 1221 is: w2 is more than or equal to 0.8mm and less than or equal to 2.0 mm. When the width of the second slot 1221 is larger, the clearance between the first antenna 20 and the second antenna 30 is larger, and the performance of the first antenna 20 and the second antenna 30 for transceiving electromagnetic wave signals is better.

In an embodiment, the first frame 121 is connected to a periphery of the frame body 120, and the first frame 121 protrudes from at least one of two surfaces of the middle frame body 110, on which the first gap 130 is opened. The second frame 122 is connected with the first frame 121 in a bending manner, the second frame 122 is connected to the periphery of the frame 120 body, and the second frame 122 protrudes out of at least one of two surfaces of the frame 120 body, which are provided with the second gap 1221. The first frame 121, the second frame 122 and the middle frame body 110 form a receiving space to receive devices in the electronic apparatus 1. In the schematic view of the present embodiment, it is illustrated that the first frame 121 and the second frame 122 both protrude from two surfaces of the middle frame body 110, which are provided with the first gap 130.

The division of the first branch 210 and the second branch 310 will be described in detail below. The first slit 130 includes an end facing away from the second frame 122 and an end facing away from the first frame 121. For convenience of naming, an end of the first slit 130 facing away from the second bezel 122 is named a first end, and an end of the first slit 130 facing away from the first bezel 121 is named a second end. Since the portion of the first frame 121 corresponding to the first end is connected to the middle frame body 110, the portion of the first frame 121 connected to the middle frame body 110 can be regarded as the ground end of the first branch 210. Therefore, a portion of the first frame 121 corresponding to the first slit 130 and a portion of the second frame 122 connected to the first frame 121 are the first branch 210. Since the portion of the second frame 122 corresponding to the second end is connected to the middle frame body 110, the portion of the second frame 122 connected to the middle frame body 110 can be regarded as the grounding end of the second branch 310. Therefore, the second frame 122 is not connected to the first frame 121 and the portion corresponding to the first gap 130 is the second branch 310.

When the first antenna 20 is a receiving antenna, the first branch 210 is a component for receiving an electromagnetic wave signal by the first antenna 20, in other words, the first antenna 20 receives an electromagnetic wave signal through the first branch 210; when the first antenna 20 is a transmitting antenna, the first branch 210 is a component of the first antenna 20 for radiating electromagnetic wave signals, in other words, the first antenna 20 transmits electromagnetic wave signals through the first branch 210. Accordingly, when the second antenna 30 is a receiving antenna, the second branch 310 is a component for receiving the electromagnetic wave signal by the second antenna 30, in other words, the second antenna 30 receives the electromagnetic wave signal through the second branch 310; when the second antenna 30 is a transmitting antenna, the second branch 310 is a component for the second antenna 30 to radiate electromagnetic wave signals, in other words, the second antenna 30 transmits electromagnetic wave signals through the second branch 310.

In one embodiment, the first gap 130 is not filled. It is understood that, in another embodiment, the first slot 130 is filled with a non-electromagnetic wave shielding medium, which may be, but not limited to, plastic. Compared to the middle frame 10 without the non-electromagnetic wave shielding medium filled in the first gap 130, the structural strength of the middle frame 10 is greater when the non-electromagnetic wave shielding medium is filled in the first gap 130.

In one embodiment, the second gap 1221 is not filled. It is understood that in an embodiment, the second slot 1221 is also filled with a non-electromagnetic wave shielding medium. Compared to the middle frame 10 that is not filled with the non-electromagnetic wave shielding medium in the second gap 1221, the structural strength of the middle frame 10 that is filled with the non-electromagnetic wave shielding medium in the second gap 1221 is greater. When the surface of the frame 120 facing away from the middle frame body 110 forms part of the external surface of the electronic device 1, the second gap 1221 is filled with a non-electromagnetic wave shielding medium, so that the dust-proof and water-proof performance of the electronic device 1 can be enhanced.

The electronic device 1 provided in the embodiment of the present application divides the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 through the same gap (the second gap 1221) on the second frame 122, and simultaneously isolates the interference of the first antenna 20 to the second antenna 30 through the isolation circuit 320, thereby ensuring that the first antenna 20 and the second antenna 30 can still work normally even if the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 are only divided through a small number of gaps. The isolation circuit 320 can isolate the first antenna 20 from the second antenna 30, which is beneficial to improving the communication performance of the second antenna 30. In addition, in the electronic device 1 in the embodiment of the present application, the number of the gaps on the frame 120 of the middle frame 10 is smaller, which is beneficial to improving the structural strength of the middle frame 10 on one hand, and can save the processing time on the other hand, and when the surface of the frame 120 departing from the middle frame body 110 is used as a partial appearance surface of the electronic device 1, the appearance integrity of the electronic device 1 can be better.

Referring to fig. 7, fig. 7 is a circuit diagram of an isolation circuit according to an embodiment of the present disclosure. The first antenna 20 works in a first frequency band, and the first frequency band comprises a GPS L1 frequency band, a WIFI2.4G frequency band, a WIFI5.2G frequency band and a WIFI 5.8G frequency band. The second antenna 30 operates in a second frequency band, which includes the GPS L5 frequency band. The isolation circuit 320 includes at least one of the first filtering unit 321 and the second filtering unit 322, the first filtering unit 321 is configured to filter interference of a GPS L1 frequency band in the first antenna 20 on the second antenna 30, and the second filtering unit 322 is configured to filter interference of a WIFI5.2G frequency band and a WIFI 5.8G frequency band in the first antenna 20 on the second antenna 30.

The GPS L1 frequency band is a 1.575GHz +/-5 MHz frequency band; the WIFI2.4G frequency band refers to a frequency band of 2.420 GHz-2.4835 GHz; the WIFI5.2G frequency band is 5.15GHz-5.35 GHz; the 5.8G frequency band is 5.725GHz-5.875 GHz; the GPS L5 frequency band refers to 1.17GHz +/-5 MHz.

If the first filtering unit 321 and the second filtering unit 322 are not provided, the GPS L1 frequency band, the WIFI5.2G frequency band, and the WIFI 5.8G frequency band in the first antenna 20 generate interference to the electromagnetic wave signal transmitted and received by the second antenna 30. In the embodiment of the present application, the first filtering unit 321 is added to filter the interference of the GPS L1 frequency band in the first antenna 20 to the second antenna 30, and the second filtering unit 322 is added to filter the interference of the WIFI5.2G frequency band and the WIFI 5.8G frequency band in the first antenna 20 to the second antenna 30. Therefore, the electronic apparatus 1 in the present embodiment has high communication quality.

Specifically, in an embodiment, the first antenna 20 further includes an excitation source, and for convenience of naming, the excitation source in the first antenna 20 is referred to as a first excitation source 220 (see fig. 5 and 6 together). The first excitation source 220 is electrically connected to the first stub 210. Specifically, the first excitation source 220 is electrically connected to an end of the first branch 210 adjacent to the second gap 1221. The first excitation source 220 is electrically connected to the end of the first branch 210 adjacent to the second slot 1221, such that the distance from the first branch 210 to the ground of the first branch 210 is longer, and the first antenna 20 in which the first branch 210 is located has a larger frequency range. When the first antenna 20 is used for radiating an electromagnetic wave signal, the first excitation source 220 is used for generating a first excitation current, and the first branch 210 generates an electromagnetic wave signal according to the first excitation current and radiates the electromagnetic wave signal.

Specifically, in an embodiment, the second antenna 30 further includes an excitation source, and for convenience of nomenclature, the excitation source in the second antenna 30 is referred to as a second excitation source 340 (see fig. 5 and 6). The second driving source 340 is electrically connected to the second branch 310, and when the isolation circuit 320 includes the first filter unit 321, the first filter unit 321 includes a first inductor L1 and a first capacitor C1. One end of the first inductor L1 is grounded, and the other end of the first inductor L1 is electrically connected to the output end of the second driving source 340 through the first capacitor C1.

The first filtering unit 321 is also called a band-stop filtering unit or a band-stop filtering network. In one embodiment, when the second excitation source 340 is electrically connected to the second branch 310, the second excitation source 340 is electrically connected to an end of the second branch 310 adjacent to the second gap 1221.

In one embodiment, the second antenna 30 further comprises an excitation source, and for convenience of nomenclature, the excitation source in the second antenna 30 is referred to as a second excitation source 340. The second excitation source 340 is electrically connected to the second branch 310. When the isolation circuit 320 includes the second filtering unit 322, the second filtering unit 322 includes a second capacitor C2, one end of the second capacitor C2 is electrically connected to the second driving source 340, and the other end of the second capacitor is grounded.

In an embodiment, the electronic device 1 further includes an impedance matching unit 330, and the impedance matching unit 330 is located in the second antenna 30. The impedance matching unit 330 includes a third capacitor C3. The third capacitor C3 is electrically connected to the second excitation source 340 and the second branch 310, and the impedance matching unit 330 is configured to match an output impedance of the second excitation source 340 with an input impedance of the second branch 310.

The impedance matching unit 330 is configured to match an output impedance of the second excitation source 340 with an input impedance of the second branch 310, so as to improve the transceiving efficiency of the second branch 310 for transceiving electromagnetic wave signals, and reduce energy loss when the second branch 310 receives and transmits electromagnetic wave signals.

In the schematic diagram of the present embodiment, the isolation circuit 320 includes a first filtering unit 321 and a second filtering unit 322, and the second antenna 30 includes an impedance matching unit 330. It is understood that in other embodiments, the second antenna 30 may include any one or a combination of the first filtering unit 321 in the isolation circuit 320, the second filtering unit 322 in the isolation circuit 320, and the impedance matching circuit.

Work as the second antenna 30 work is in the second frequency channel, when the second frequency channel includes GPS L5 frequency channel, the length range of second stub 310 is 17mm 2mm, the value of first inductance L1 is 10nH 2nH, the value of first electric capacity C1 is 1pF 0.5pF, the value of second electric capacity C2 is 2.7pF 0.5pF, the value of third electric capacity C3 is 1pF 0.5 pF.

The first antenna 20 is described in connection with the electronic device 1 provided in any of the above examples. Referring to fig. 8, fig. 8 is a schematic diagram of a first antenna according to an embodiment of the present application. The first antenna 20 further includes a first excitation source 220, and a conditioning circuit 230. The first excitation source 220 is electrically connected to the adjusting circuit 230 to the first branch 210, and the adjusting circuit 230 is configured to adjust at least one of a resonant frequency, a resonant depth, a frequency offset of each frequency band of the first frequency band in which the first antenna 20 operates, and an impedance matching of the first antenna 20 when the first antenna 20 operates in each frequency band.

In one embodiment, the regulation circuit 230 includes a first regulation subcircuit 231, and a second regulation subcircuit 232. The first adjusting sub-circuit 231 is used for adjusting impedance matching of the WIFI5.2 GHz frequency band and the WIFI 5.8GHz frequency band. The second adjusting sub-circuit 232 is used for adjusting impedance matching of a GPS L1 frequency band and a WIFI2.4GHz frequency band.

In one embodiment, the regulation circuit 230 includes a third regulation subcircuit 233. The third adjusting sub-circuit 233 is used for adjusting the resonance depth of the GPS L1 frequency band.

In an embodiment, the conditioning circuit 230 includes a fourth conditioning subcircuit 234. The fourth adjustment sub-circuit 234 is configured to adjust the frequency offset of the GPS L1 frequency band.

In one embodiment, the regulation circuit 230 includes a fifth regulation subcircuit 235. The fifth adjusting sub-circuit 235 is used for adjusting the resonant frequency and the resonant depth of the wifi2.4ghz band.

In the schematic diagram of the present embodiment, the adjusting circuit 230 includes a first adjusting sub-circuit 231, a second adjusting sub-circuit 232, a third adjusting sub-circuit 233, a fourth adjusting sub-circuit 234, and a fifth adjusting sub-circuit 235.

The regulation circuit 230 includes a first regulation subcircuit 231, a second regulation subcircuit 232, a third regulation subcircuit 233, a fourth regulation subcircuit 234, and a fifth regulation subcircuit 235. The excitation source of the first antenna 20 is connected in series to the first branch 210 through the first adjusting sub-circuit 231, the third adjusting sub-circuit 233, and the fifth adjusting sub-circuit 235. The second regulating sub-circuit 232 is electrically connected to a node of the third regulating sub-circuit 233 and the first regulating sub-circuit 231. The fourth regulation subcircuit 234 is electrically connected to a node of the fifth regulation subcircuit 235 and the third regulation subcircuit 233. The first adjusting sub-circuit 231 is used for adjusting impedance matching of the WIFI5.2 GHz frequency band and the WIFI 5.8GHz frequency band. The second adjusting sub-circuit 232 is used for adjusting impedance matching of a GPS L1 frequency band and a WIFI2.4GHz frequency band. The third adjusting sub-circuit 233 is used for adjusting the resonance depth of the GPS L1 frequency band. The fourth adjustment sub-circuit 234 is configured to adjust the frequency offset of the GPS L1 frequency band. And the fifth adjusting sub-circuit 235 is used for adjusting the resonant frequency and the resonant depth of the WIFI2.4GHz frequency band.

When the first antenna 20 works in a first frequency band, the first frequency band comprises a GPS L1 frequency band, a WIFI2.4G frequency band, a WIFI5.2G frequency band and a WIFI 5.8G frequency band, and the length range of the first branch 210 is 22mm-25mm

In one embodiment, the first regulation sub-circuit 231 includes a second inductor L2 and a fourth capacitor C4. One end of the second inductor L2 is electrically connected to the second excitation source 340, and the other end of the second inductor L2 is electrically connected to the first branch 210. One end of the fourth capacitor C4 is grounded, and the other end of the fourth capacitor C4 is electrically connected to the node between the second inductor L2 and the first branch 210.

In an embodiment, a value of the second inductor L2 is 1.3nH, and a value of the fourth capacitor C4 is 0.3 pF.

In one embodiment, the second regulation sub-circuit 232 includes a third inductor L3. One end of the third inductor L3 is grounded, and the other end is electrically connected to the first branch 210. In one embodiment, the value of the third inductor L3 is 2.2 nH.

In one embodiment, the third regulator sub-circuit 233 includes a fifth capacitor C5, one end of the fifth capacitor C5 is electrically connected to the first regulator sub-circuit 231, and the other end of the fifth capacitor C5 is electrically connected to the first branch 210. When the adjusting circuit 230 includes the fifth adjusting sub-circuit 235, one end of the third capacitor C5 is electrically connected to the first adjusting sub-circuit 231, and the other end of the fifth capacitor C5 is electrically connected to the fifth adjusting sub-circuit 235 to the first branch 210.

In one embodiment, the value of the fifth capacitor C5 is 0.5 pF.

In an embodiment, the fourth regulation subcircuit 234 includes a fourth inductor L4. One end of the fourth inductor L4 is grounded, and the other end of the fourth inductor L4 is electrically connected to the first branch 210. When the regulating circuit 230 includes the third regulating sub-circuit 233 and the fifth regulating sub-circuit 235, one end of the fourth inductor L4 is grounded, and the other end of the fourth inductor L4 is electrically connected to the node of the third regulating sub-circuit 233 and the fifth regulating sub-circuit 235.

In an embodiment, the value of the fourth inductor L4 is 17 nH.

In one embodiment, the fifth regulation subcircuit 235 includes a fifth inductor L5 and a sixth capacitor C6. One end of the fifth inductor L5 is electrically connected to the first regulator sub-circuit 231, the other end of the fifth inductor L5 is electrically connected to the first branch 210, one end of the sixth capacitor C6 is electrically connected to the first regulator sub-circuit 231, the other end of the sixth capacitor C6 is electrically connected to the first branch when the regulator circuit 230 includes the third regulator sub-circuit 233 and the fifth regulator sub-circuit 235, and the fifth regulator sub-circuit 235 includes the fifth inductor L5 and the sixth capacitor C6, one end of the fifth inductor L5 is electrically connected to the third regulator sub-circuit 233 to the first regulator sub-circuit 231, the other end of the fifth inductor L5 is electrically connected to the first branch 210, and one end of the sixth capacitor C6 is electrically connected to the third regulator sub-circuit 233 to the first regulator sub-circuit 231.

In an embodiment, a value of the fifth inductor L5 is 2.5nH, and a value of the sixth capacitor C6 is 0.5 pF.

In the schematic diagram of this embodiment, specific structures of the first adjusting sub-circuit 231, the second adjusting sub-circuit 232, the third adjusting sub-circuit 233, the fourth adjusting sub-circuit 234, and the fifth adjusting sub-circuit 235 are not illustrated in the structures described in the above embodiments, and it should be understood that the present application is not limited to the specific circuit structure of the adjusting circuit 230 and is not limited to the specific structure of the adjusting sub-circuits, as long as the adjusting circuit 230 can adjust at least one of the resonant frequency, the resonant depth, the frequency offset of each frequency band in the first frequency band in which the first antenna 20 operates, and the impedance matching of the first antenna 20 when operating in each frequency band.

Referring to fig. 9 in combination with the related drawings of fig. 1 and fig. 2, fig. 9 is a schematic cross-sectional structure of an electronic device along the line I-I according to another embodiment of the present disclosure. The electronic device 1 includes a middle frame 10, a circuit board 60, a battery cover 40, and a screen 50. The middle frame 10 includes a middle frame body 110 and a frame 120 connected to the periphery of the middle frame body 110. The middle frame body 110 includes a first surface 111 and a second surface 112 disposed opposite to each other. The circuit board 60 and the battery cover 40 are sequentially disposed on one side of the first surface 111, and the screen 50 is disposed on one side of the second surface 112. The middle frame body 110 is provided with a first gap 130 communicating the first surface 111 and the second surface 112, and the first gap 130 corresponds to two connected frames 120 (a first frame 121 and a second frame 122). The surface of the frame 120 facing away from the middle frame body 110 forms part of the external appearance of the electronic device 1, and one frame 120 (the second frame 122) of the two frames 120 has a second gap 1221 to divide the frame 120 into a first part and a second part. The circuit board 60 includes a first excitation source 220, a second excitation source 340, and an isolation circuit 320. The first excitation source 220 is electrically connected to an end of the first portion adjacent to the second slot 1221, the second excitation source 340 is electrically connected to the isolation circuit 320 to an end of the second portion adjacent to the second slot 1221, and the isolation circuit 320 is configured to prevent the first antenna 20 where the first excitation source 220 is located from interfering with the second antenna 30 where the second excitation source 340 is located.

The frame 120 with the second gap 1221 is sandwiched between the screen 50 and the battery cover 40. The surface of the frame 120 with the second gap 1221 facing away from the middle frame body 110 forms a part of the appearance of the electronic device 1. The second frame 122 is sandwiched between the screen 50 and the battery cover 40, for example. The surface of the second frame 122 facing away from the middle frame body 110 forms part of the appearance of the electronic device 1.

The screen 50 is a member for displaying contents such as characters, images, and video in the electronic device 1. The screen 50 may be a component having only a display function, or may be a component integrating display and touch functions. In this embodiment, the screen 50 further includes a screen body 510 and a cover plate 520 disposed on a side of the screen body 510 away from the middle frame body 110, where the screen body 510 is used for displaying contents of the electronic device 1, such as characters, images, and videos. The cover plate 520 is used for protecting the screen body 510.

The battery cover 40 may be made of non-metallic materials such as glass and ceramic. The battery cover 40 and the screen 50 are disposed on two surfaces of the middle frame body 110 opposite to each other. The two surfaces are two surfaces through which the first slit 130 penetrates.

In the present application, the second frame 122 is sandwiched between the screen 50 and the battery cover 40, and a surface of the second frame 122 departing from the middle frame body 110 forms a part of an appearance surface of the electronic device 1. According to the present application, the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 pass through the same gap on the second frame 122, and when the surface of the second frame 122 departing from the middle frame body 110 forms part of the appearance surface of the electronic device 1, the appearance integrity of the electronic device 1 is high.

Various electronic components in the first antenna 20 and various electronic components in the second antenna 30 are disposed on the circuit board 60. For example, the first driving source 220, the second driving source 340, the isolation circuit 320, and the adjusting circuit 230 may be disposed on the circuit board 60.

Next, please refer to fig. 10, which shows a simulation analysis of the isolation between the first antenna 20 and the second antenna 30, wherein fig. 10 is a simulation diagram of the isolation between the first antenna and the second antenna according to the present application. In the simulation diagram, the abscissa represents frequency in GHz, and the ordinate represents isolation in dB. In the present diagram, a smaller value of the horizontal axis indicates a better isolation between the first antenna 20 and the second antenna 30; the larger the value of the horizontal axis, the less good the isolation between the first antenna 20 and the second antenna 30. In this diagram, the gain at point 3 is at a maximum of-12.331 dB, and thus it can be seen that the isolation between the first antenna 20 and the second antenna 30 is less than-12 dB, the isolation between the first antenna 20 and the second antenna 30 is higher, the first antenna 20 has less effect on the second antenna 30, and accordingly, the first antenna 20 has less effect on the second antenna 30.

Next, a simulation analysis is performed on the radiation efficiency of the first antenna 20, please refer to fig. 11, where fig. 11 is a schematic diagram of the radiation efficiency of the first antenna according to the present application. In this simulation diagram, the abscissa is frequency in GHz and the ordinate is efficiency in dB. In this diagram, a larger gain indicates a larger radiation efficiency of the first antenna 20, and a smaller gain indicates a lower radiation efficiency of the first antenna 20. The point 1 is the radiation efficiency of the GPS L1 frequency band, the point 2 is the radiation efficiency of the WIFI2.4G frequency band, and the point 3 is the radiation efficiency of the WIFI5.2G frequency band and the WIFI 5.8G frequency band. The gains at point 1, point 2 and point 3 are all greater than-5 dB, so it can be seen that the first antenna 20 has higher radiation efficiency at point 1, point 2 and point 3. Therefore, the first antenna 20 of the present application has a good communication effect.

Next, a simulation analysis is performed on the radiation efficiency of the second antenna 30, please refer to fig. 12, and fig. 12 is a schematic diagram of the radiation efficiency of the second antenna of the present application. In the simulation diagram, the abscissa represents frequency in GHz, and the ordinate represents radiation efficiency in dB. In the schematic diagram, a larger gain indicates a larger radiation efficiency of the second antenna 30, and a smaller gain indicates a lower radiation efficiency of the second antenna 30. Point 1 is the radiation efficiency of the GPS L5 band, and the gain at point 1 is greater than-5 dB, so that the second antenna 30 has a higher radiation efficiency at point 1. Therefore, the second antenna 30 of the present application has a better communication effect.

It is to be understood that, although the electronic device 1 includes the middle frame 10 in the foregoing embodiments of the present application, and the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 are formed on the middle frame 10 for illustration. The first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 may also be formed on other components, for example, when the electronic device 1 includes a conductive battery cover 40 (e.g., a metal battery cover), the first branch 210 of the first antenna 20 and the second antenna 30 may also be formed on the battery cover 40. The electrically conductive battery cover 40 and the middle frame 10 are only one specific form of the housing of the electronic device 1. Of course, the housing is not limited to the battery cover 40 and the middle frame 10, which are electrically conductive, in the electronic device 1, as long as the housing can form the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30.

When the housing formed by the first branch 210 of the first antenna 20 and the first branch 310 of the second antenna 30 is the conductive battery cover 40 in the electronic device 1, the same situation as that the housing formed by the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 is the middle frame 10 is adopted. Referring to fig. 13-15, specifically, please refer to fig. 13, 14 and 15 together, fig. 13 is a schematic back view of an electronic device according to an embodiment of the present disclosure; FIG. 14 is a schematic view of a battery cover from an inner surface of an electronic device according to the present application; fig. 15 is a schematic sectional view taken along line II-II in fig. 13. The housing 70 includes a body 710 and a frame 720 connected to the periphery of the body 710, wherein a first gap 113 penetrating through two opposite surfaces of the body 710 is formed at the periphery of the body 710, and a second gap 1221 is further formed on the frame 720 adjacent to the first gap 113. The second slit 1221 communicates with the first slit 113. The first slit 113 and the second slit 1221 divide the frame 720 into the first branch 210 and the second branch 310.

Compared with the prior art, in the electronic device 1 of the present application, the housing 70 is used to form the first branch 210 and the second branch 310, the first branch 210 is used to form the radiator of the first antenna 20, the second branch 310 is used to form the radiator of the second antenna 30, and the isolation circuit 320 is used to isolate the interference of the first antenna 20 to the second antenna 30, so as to achieve the isolation between the first antenna 20 and the second antenna 30. Therefore, the electronic device 1 of the present application can implement more frequency band coverage in a limited space, implement a larger bandwidth, and have a higher communication performance.

When the housing 70 is a conductive battery cover 40, the housing 70 forms a receiving space for receiving other components of the electronic device 1, such as the middle frame 10, the circuit board 60, and the screen 50. Of course, the components housed by the housing space do not constitute a limitation of the housing provided by the present application. The circuit board 60 is disposed on a side of the middle frame 10 facing the battery cover 40, and the screen 50 is disposed on a side of the middle frame 10 facing the circuit board 60. The circuits of the first antenna 20 and the second antenna 30 are disposed on the circuit board 60. For example, the first excitation source 220, the second excitation source 340, and the isolation circuit 320 are disposed on the circuit board 60.

It is understood that when the housing 70 is the battery cover 40 capable of conducting electricity, various circuits and sub-circuits when the housing 70 is the middle frame 10 are also included in the electronic device 1. For each circuit, please refer to the above description, which is not repeated herein. When the housing 70 is the conductive battery cover 40, the relationship between the first gap 113 and the second gap 1221 as compared with other parts of the housing 70 is the same as that in the embodiment when the housing 70 is the middle frame 10, and therefore, the description thereof is omitted.

It can be understood that, in the background art embodiment of the present application, the first antenna 20 operates in a first frequency band, the first frequency band includes a GPS L1 frequency band, a WIFI2.4G frequency band, a WIFI5.2G frequency band, and a WIFI 5.8G frequency band, and the second antenna 30 operates in a second frequency band, the second frequency band includes a GPS L5 frequency band for example, the description of the first antenna 20 and the second antenna 30 cannot be understood as a limitation on the first antenna 20 and the second antenna 30 of the present application, and in other embodiments, the first antenna 20 and the second antenna 30 may also be antennas supporting other frequency bands.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein the WIFI frequency bands include a WIFI2.4G frequency band, an WIFI5.2G frequency band, and a WIFI 5.8G frequency band, the isolation circuit includes at least one of a first filtering unit and a second filtering unit, the first filtering unit is configured to filter interference of a GPS L1 frequency band in the first antenna to a GPS L5 frequency band of the second antenna, and the second filtering unit is configured to filter interference of a WIFI5.2G frequency band in the first antenna, and a WIFI 5.8G frequency band to a GPS L5 frequency band of the second antenna.

3. The electronic device of claim 2, wherein the first filtering unit comprises a first inductor and a first capacitor, one end of the first inductor is grounded, and the other end of the first inductor is electrically connected to the second excitation source through the first capacitor.

4. The electronic device according to claim 2, wherein the second filter unit includes a second capacitor, one end of the second capacitor is electrically connected to the second excitation source, and the other end of the second capacitor is grounded.

5. The electronic device of claim 2, further comprising an impedance matching unit, wherein the impedance matching unit comprises a third capacitor, the third capacitor is electrically connected to the second excitation source and the second antenna, and the impedance matching unit is configured to match an output impedance of the second excitation source with an input impedance of the second stub.

6. The electronic device of any of claims 1-5, further comprising a tuning circuit, wherein the first excitation source is electrically connected to the first stub through the tuning circuit, and wherein the tuning circuit is configured to tune at least one of a resonant frequency, a resonant depth, a frequency offset, and an impedance matching of the first antenna when operating in each frequency band.

7. The electronic device of claim 6, wherein the adjusting circuit comprises a first adjusting sub-circuit and a second adjusting sub-circuit, and the first adjusting sub-circuit is used for adjusting impedance matching in a WIFI5.2 GHz band and a WIFI 5.8GHz band; the second adjusting sub-circuit is used for adjusting impedance matching of a GPS L1 frequency band and a WIFI2.4GHz frequency band.

8. The electronic device of claim 7, wherein the first regulator sub-circuit comprises a second inductor and a fourth capacitor, one end of the second inductor is electrically connected to a second excitation source, the other end of the second inductor is electrically connected to the first stub, one end of the fourth capacitor is grounded, and the other end of the fourth capacitor is electrically connected to a node between the second inductor and the first stub.

9. The electronic device of claim 7 or 8, wherein the second regulator sub-circuit comprises a third inductor having one end connected to ground and another end electrically connected to the first stub.

10. The electronic device of any one of claims 7-9, wherein the adjustment circuit further comprises a third adjustment sub-circuit configured to adjust a resonant depth of a GPS L1 frequency band.

11. The electronic device of claim 10, wherein the third regulation sub-circuit comprises a fifth capacitor, one end of the fifth capacitor being electrically connected to the first regulation sub-circuit, the other end of the fifth capacitor being electrically connected to the first stub.

12. The electronic device of any of claims 7-11, wherein the adjustment circuit further comprises a fourth adjustment sub-circuit configured to adjust frequency offset in a GPS L1 frequency band.

13. The electronic device of claim 12, wherein the fourth regulator sub-circuit comprises a fourth inductor, one end of the fourth inductor being coupled to ground, the other end of the fourth inductor being electrically coupled to the first stub.

14. The electronic device of any one of claims 7-13, wherein the adjusting circuit further comprises a fifth adjusting sub-circuit, and the fifth adjusting sub-circuit is configured to adjust a resonant frequency and a resonant depth of the WIFI2.4 frequency band.

15. The electronic device of claim 14, wherein the fifth regulation sub-circuit comprises a fifth inductance and a sixth capacitance, one end of the fifth inductance is electrically connected to the first regulation sub-circuit, the other end of the fifth inductance is electrically connected to the first stub, one end of the sixth capacitance is electrically connected to the first regulation sub-circuit, and the other end of the sixth capacitance is electrically connected to the first stub.

16. An electronic device, comprising a housing, wherein the housing comprises a body and a frame connected to a periphery of the body, the body comprises a first surface and a second surface which are oppositely arranged, a first gap is formed on the periphery of the body on the surface, the first gap penetrates through the first surface and the second surface, the first gap isolates at least a portion of the frame from the body, the frame is formed with a second gap communicated with the first gap, the frame is divided into a first portion and a second portion by the first gap and the second gap, the electronic device further comprises a first excitation source, a second excitation source and an isolation circuit, the first excitation source is electrically connected to one end of the first portion adjacent to the second gap, the second excitation source is electrically connected to one end of the second portion adjacent to the second gap, the isolation circuit is used for preventing the first antenna where the first excitation source is located from interfering with the second antenna where the second excitation source is located.

17. The electronic device of claim 16, wherein the first antenna operates in a first frequency band, the first frequency band comprises a GPS L1 frequency band, a WIFI2.4G frequency band, a WIFI5.2G frequency band, and a WIFI 5.8G frequency band, the second antenna operates in a second frequency band, the second frequency band comprises a GPS L5 frequency band, the isolation circuit comprises at least one of a first filtering unit and a second filtering unit, the first filtering unit is configured to filter interference of the GPS L1 frequency band in the first antenna on the second antenna, and the second filtering unit is configured to filter interference of the WIFI5.2G frequency band and the WIFI 5.8G frequency band in the first antenna on the second antenna.

18. The electronic device according to claim 17, wherein when the isolation circuit includes a first filter unit, the first filter unit includes a first inductor and a first capacitor, one end of the first inductor is grounded, and the other end of the first inductor electrically connects the first capacitor to the output terminal of the second excitation source; when the isolation circuit includes a second filtering unit, the second filtering unit includes a second capacitor electrically connected to an output terminal of the second excitation source.

19. The electronic device of claim 16, further comprising an impedance matching unit comprising a third capacitance, the impedance matching unit electrically connecting the second excitation source and an end of the second portion adjacent to the second slot.

20. The electronic device of claim 16, further comprising a regulating circuit, wherein the regulating circuit comprises a second inductor, a fourth capacitor, a third inductor, a fifth capacitor, a fourth inductor, a fifth inductor, and a sixth capacitor, one end of the second inductor is electrically connected to the second excitation source, the other end of the second inductor is electrically connected to the fourth capacitor to ground, one end of the third inductor is electrically connected to the node of the fourth capacitor, one end of the fifth capacitor is electrically connected to the node of the fourth capacitor, the second inductor is electrically connected to the node of the fourth capacitor, the other end of the fifth capacitor is electrically connected to the fourth inductor to ground, one end of the fifth inductor is electrically connected to the node of the fourth inductor, and the other end of the fifth inductor is electrically connected to the first portion, the sixth capacitor is connected in parallel with the fifth inductor.