CN112086753A - Antenna assembly and electronic equipment - Google Patents

Antenna assembly and electronic equipment Download PDF

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Publication number
CN112086753A
CN112086753A CN202011066431.XA CN202011066431A CN112086753A CN 112086753 A CN112086753 A CN 112086753A CN 202011066431 A CN202011066431 A CN 202011066431A CN 112086753 A CN112086753 A CN 112086753A
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CN
China
Prior art keywords
radiator
sub
antenna
frequency
frequency band
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011066431.XA
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Chinese (zh)
Inventor
吴小浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202011066431.XA priority Critical patent/CN112086753A/en
Publication of CN112086753A publication Critical patent/CN112086753A/en
Priority to PCT/CN2021/109935 priority patent/WO2022068373A1/en
Priority to EP21874035.5A priority patent/EP4224631A4/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching

Abstract

The application provides an antenna assembly and an electronic device. The antenna assembly comprises a first antenna and a second antenna, the first antenna comprises a first radiating body, a first signal source and a first frequency-selecting filter circuit, the second antenna comprises a second radiating body, a second signal source and a second frequency-selecting filter circuit, the first radiating body and the second radiating body are arranged at intervals and are mutually coupled, the first signal source is electrically connected with the first frequency-selecting filter circuit to the first radiating body, the second signal source is electrically connected with the second frequency-selecting filter circuit to the second radiating body, the first antenna is used for generating at least one resonant mode, the second antenna is used for generating at least two resonant modes, the at least two resonant modes of the second antenna are used for receiving and transmitting electromagnetic wave signals covering a first frequency band, a second frequency band and a third frequency band, and the at least one resonant mode of the second antenna is generated by capacitive coupling feed excitation between the first antenna and the second antenna. The antenna assembly of the application has a good communication effect.

Description

Antenna assembly and electronic equipment
Technical Field
The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device.
Background
With the development of technology, electronic devices such as mobile phones and the like with communication functions have higher popularity and higher functions. Antenna assemblies are often included in electronic devices to implement communication functions of the electronic devices. However, the antenna assembly in the electronic device in the related art has not good enough communication performance, and there is room for improvement.
Disclosure of Invention
In a first aspect, the present application provides an antenna assembly. The antenna assembly includes:
the antenna comprises a first antenna and a second antenna, wherein the first antenna comprises a first radiating body, a first signal source and a first frequency-selecting filter circuit, and the second antenna comprises a second radiating body, a second signal source and a second frequency-selecting filter circuit;
the first radiator and the second radiator are arranged at intervals and are mutually coupled, one end of the first radiator, which is far away from the second radiator, is grounded, the first signal source is electrically connected with the first frequency-selecting filter circuit to the first radiator, one end of the second radiator, which is far away from the first radiator, is grounded, and the second signal source is electrically connected with the second frequency-selecting filter circuit to the second radiator;
the first antenna is used for generating at least one resonance mode, the second antenna is used for generating at least two resonance modes, the at least two resonance modes of the second antenna are used for covering the transceiving of electromagnetic wave signals of a first frequency band, a second frequency band and a third frequency band, and the at least one resonance mode of the second antenna is generated by the capacitive coupling feed excitation between the first antenna and the second antenna.
In a second aspect, the present application also provides an electronic device comprising an antenna assembly as described in the first aspect.
The second antenna in the antenna assembly provided by the application can receive and transmit the electromagnetic wave signals of the first frequency band, and also can receive and transmit at least one of the electromagnetic wave signals of the second frequency band and the electromagnetic wave signals of the third frequency band, so that the antenna assembly has a better communication effect.
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 diagram of an antenna assembly provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of an antenna assembly provided in one embodiment of fig. 1.
Fig. 3 to fig. 10 are schematic diagrams of sub-frequency-selective filter circuits according to various embodiments.
Fig. 11 is a schematic view of an antenna assembly provided in another embodiment of the present application.
Fig. 12 is a schematic view of an antenna assembly provided in accordance with yet another embodiment of the present application.
Fig. 13 is a schematic diagram of an antenna assembly according to yet another embodiment of the present application.
Fig. 14 is a schematic diagram illustrating RL curves of a first antenna and a second antenna in an antenna assembly according to an embodiment.
Fig. 15 is a schematic diagram of the main current distribution corresponding to mode a.
Fig. 16 is a schematic diagram of the main current distribution corresponding to mode b.
Fig. 17 is a schematic diagram of the main current distribution corresponding to the mode c.
Fig. 18 shows the main current distribution corresponding to mode d.
Fig. 19 shows the main current distribution for mode e.
Fig. 20 shows the main current distribution corresponding to mode f.
Fig. 21 is a perspective view of an electronic device according to an embodiment of the present application.
FIG. 22 is a cross-sectional view taken along line I-I of FIG. 21, according to one embodiment.
Fig. 23 is a top view of a metal frame according to an embodiment of the present application.
Fig. 24 is a top view of a metal frame according to another embodiment of the present application.
Fig. 25 is a schematic diagram illustrating positions of a first radiator and a second radiator in an electronic device according to an embodiment.
Fig. 26 is a schematic diagram illustrating positions of a first radiator and a second radiator in an electronic device according to another embodiment.
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" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation 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 antenna assembly 10. The antenna assembly 10 may be applied to an electronic device 1, where the electronic device 1 includes, but is not limited to, an electronic device 1 having a communication function, such as a mobile phone, an internet device (MID), an electronic book, a Portable Player Station (PSP), or a Personal Digital Assistant (PDA).
Referring to fig. 1, fig. 1 is a schematic diagram of an antenna element according to an embodiment of the present application. The antenna assembly 10 includes a first antenna 110 and a second antenna 120. The first antenna 110 includes a first radiator 111, a first signal source 112, and a first frequency-selective filter circuit 113. The second antenna 120 includes a second radiator 121, a second signal source 122, and a second frequency-selective filter circuit 123. The first radiator 111 and the second radiator 121 are disposed at an interval and coupled to each other. The end of the first radiator 111 away from the second radiator 121 is grounded, the first signal source 112 is electrically connected to the first frequency-selective filter circuit 113 to the first radiator 111, the end of the second radiator 121 away from the first radiator 111 is grounded, and the second signal source 122 is electrically connected to the second frequency-selective filter circuit 123 to the second radiator 121. The first antenna 110 is configured to generate at least one resonant mode, the second antenna 120 is configured to generate at least two resonant modes, the at least two resonant modes of the second antenna 120 are configured to cover transceiving of electromagnetic wave signals in a first frequency band, a second frequency band, and a third frequency band, and the at least one resonant mode of the second antenna 120 is generated by capacitive coupling feed excitation between the first antenna 110 and the second antenna 120.
Furthermore, it should be noted that the terms "first", "second", and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing different objects and are not used for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The resonant modes of the first antenna 110 and the second antenna 120 are described below with reference to fig. 14 and 15 to 20. The first antenna 110 has a first resonant mode, a second resonant mode, and a third resonant mode. The second antenna 120 has a fourth resonant mode, a fifth resonant mode, and a sixth resonant mode. The first resonance mode, the second resonance mode, the third resonance mode, the fourth resonance mode, the fifth resonance mode, and the sixth resonance mode collectively cover transmission and reception of electromagnetic wave signals in a medium-high frequency (MHB) and ultra-high frequency (UHB) band. The resonant mode is also referred to herein as a resonant mode. The frequency range of the MHB is 1000MHz-3000MHz, and the frequency range of the UHB is 3000MHz-6000 MHz.
The first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 are configured to adjust a resonant frequency of the first antenna 110 according to a preset first frequency-selective parameter, so that the first antenna 110 resonates in the first resonant mode, the second resonant mode, and the third resonant mode, where in the first resonant mode, the first antenna 110 is configured to receive and transmit an electromagnetic wave signal in a fourth frequency band; in the second resonant mode, the first antenna 110 is configured to transceive an electromagnetic wave signal in a fifth frequency band; in the third resonant mode, the first antenna 110 is configured to receive and transmit electromagnetic wave signals in a sixth frequency band and a seventh frequency band.
In an embodiment, the first frequency selective filter circuit 113 and the second frequency selective filter circuit 123 are configured to adjust a resonant frequency of the second antenna 120 according to a preset second frequency selective parameter, so that the second antenna 120 resonates in the fourth resonant mode, the fifth resonant mode, and the sixth resonant mode, where in the fourth resonant mode, the second antenna 120 is configured to transceive an electromagnetic wave signal in a first frequency band; in the fifth resonant mode, the second antenna 120 is configured to receive and transmit electromagnetic wave signals in the second frequency band and the third frequency band; in the sixth resonant mode, the second antenna 120 is configured to transceive electromagnetic wave signals in the eighth frequency band.
In this embodiment, the first frequency band includes an N78 frequency band (3.3GHz to 3.8GHz), the second frequency band includes an N77 frequency band (3.3GHz to 4.2GHz), the third frequency band includes an N79 frequency band (4.4GHz to 5.0GHz), and the eighth frequency band includes a WIFI 5G frequency band (5.725GHz to 5.825 GHz). The fourth frequency band comprises a GPS-L1 frequency band, the fifth frequency band comprises an LTE MHB frequency band, the sixth frequency band comprises a WIFI 2.4G frequency band, and the seventh frequency band comprises an N41 frequency band (2496MHz-2690 MHz).
The first radiator 111 is a Flexible Printed Circuit (FPC) antenna radiator, or a Laser Direct Structuring (LDS) antenna radiator, or a Print Direct Structuring (PDS) antenna radiator, or a metal stub; the second radiator 121 is an FPC antenna radiator, or an LDS antenna radiator, or a PDS antenna radiator, or a metal stub.
When the first signal source 112 is directly electrically connected to the first radiator 111 and the second signal source 122 is directly electrically connected to the second radiator 121, the second antenna 120 can receive and transmit the electromagnetic wave signals of the first frequency band but cannot receive and transmit the electromagnetic wave signals of the second frequency band and the third frequency band. When the first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 are added, the first signal source 112 is electrically connected to the first radiator 111 through the first frequency-selective filter circuit 113, and the second signal source 122 is electrically connected to the second frequency-selective filter circuit 123 through the second radiator 121, by setting frequency-selective parameters (including a resistance value, an inductance value, and a capacitance value) of the first frequency-selective filter circuit 113 and frequency-selective parameters (including a resistance value, an inductance value, and a capacitance value) of the second frequency-selective filter circuit 123, the second antenna 120 can receive and transmit electromagnetic wave signals in a first frequency band, and can receive and transmit electromagnetic wave signals in at least one of a second frequency band and a third frequency band. Specific circuit forms of the first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 are described later. The first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 can also be referred to as matching circuits.
The aforementioned electrically connecting the first frequency-selective filter circuit 113 to the first radiator 111 by the first signal source 112 means that the first signal source 112 is electrically connected to the input end of the first frequency-selective filter circuit 113, and the output end of the first frequency-selective filter circuit 113 is electrically connected to the first radiator 111. The second signal source 122 is electrically connected to the second frequency-selective filter circuit 123 and the second radiator 121, that is, the second signal source 122 is electrically connected to the input end of the second frequency-selective filter circuit 123, and the output end of the second frequency-selective filter circuit 123 is electrically connected to the second radiator 121.
The first signal source 112 is configured to generate a first excitation signal, where the first excitation signal is loaded on the first radiator 111 via the first frequency-selective filter circuit 113, so that the first radiator 111 radiates an electromagnetic wave signal. The second signal source 122 is configured to generate a second excitation signal, where the second excitation signal is loaded on the second radiator 121 through the second frequency-selective filter circuit 123, so that the second radiator 121 radiates an electromagnetic wave signal. The first radiator 111 and the second radiator 121 are disposed at an interval and coupled to each other, that is, the first radiator 111 and the second radiator 121 have a common caliber, when the antenna assembly 10 operates, the second excitation signal generated by the second signal source 122 can be coupled to the first radiator 111 through the second radiator 121, in other words, the second antenna 120 can utilize the first radiator 111 of the first antenna 110 to receive and transmit electromagnetic wave signals as well as the second radiator 121, so that the second antenna 120 can operate in a wider frequency band. Similarly, the first radiator 111 and the second radiator 121 are disposed at an interval and coupled to each other, and when the antenna assembly 10 operates, the first excitation signal generated by the first signal source 112 may also be coupled to the second radiator 121 through the first radiator 111, in other words, the first antenna 110 may operate to transceive electromagnetic wave signals by using not only the first radiator 111 but also the second radiator 121 of the second antenna 120, so that the first antenna 110 may operate in a wider frequency band. Since the first antenna 110 can utilize both the first radiator 111 and the second radiator 121 during operation, and the second antenna 120 can utilize both the second radiator 121 and the first radiator 111 during operation, multiplexing of radiators and multiplexing of space can be realized, which is beneficial to reducing the size of the antenna assembly 10.
In the related art, the second antenna 120 can only receive and transmit the electromagnetic wave signal of the first frequency band, but does not support the electromagnetic wave signal of the second frequency band or the third frequency band, and if the electromagnetic wave signal of the second frequency band needs to be supported, an additional antenna needs to be arranged to support the electromagnetic wave signal of the second frequency band; if the electromagnetic wave signal of the third frequency band needs to be supported, an additional antenna needs to be arranged to support the electromagnetic wave signal of the third frequency band, so that in the related art, more antennas are needed to support the electromagnetic wave signals of the first frequency band, the second frequency band, and the third frequency band, thereby resulting in a larger size of the antenna assembly 10. In the antenna assembly 10 of the present embodiment, an additional antenna is not required to support the electromagnetic wave signal of the second frequency band and the electromagnetic wave signal of the third frequency band, and therefore, the size of the antenna assembly 10 is small. The additional antennas supporting the electromagnetic wave signals of the second frequency band and the additional antennas supporting the electromagnetic wave signals of the third frequency band may also result in higher cost of the antenna assembly 10; the difficulty of stacking the antenna assembly 10 with other devices increases when the antenna assembly 10 is applied in the electronic device 1. In this embodiment, the antenna assembly does not need to additionally provide an antenna to support the electromagnetic wave signals of the second frequency band and the electromagnetic wave signals of the third frequency band, so the cost of the antenna assembly 10 is low; when the antenna module is applied to the electronic device 1, the stacking difficulty is low. In addition, providing additional antennas to support electromagnetic wave signals in the second frequency band and providing additional antennas to support electromagnetic wave signals in the third frequency band may also result in increased radio frequency link insertion loss for the antenna assembly 10. In this application, when the second antenna 120 can receive and transmit the electromagnetic wave signal of at least one frequency band of the electromagnetic wave signal of the first frequency band, the electromagnetic wave signal of the second frequency band, and the electromagnetic wave signal of the third frequency band, the insertion loss of the radio frequency link can be reduced.
When the antenna assembly 10 is used in an electronic device 1 (see fig. 21, 22), the first signal source 112 may be disposed on a circuit board 50 (see fig. 21, 22) in the electronic device 1. The second signal source 122 may also be arranged on the circuit board 50 in the electronic device 1. The first frequency-selective filter circuit 113 may be disposed on the circuit board 50 in the electronic device 1. The second frequency-selective filter circuit 123 may be disposed on the circuit board 50 in the electronic device 1.
In this embodiment, the first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 are disposed to help the second antenna 120 to transmit and receive electromagnetic wave signals of the second frequency band and electromagnetic wave signals of the third frequency band on the basis of originally transmitting and receiving electromagnetic wave signals of the first frequency band. Further, the first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 are also used for isolating the first antenna 110 and the second antenna 120. In other words, the first frequency-selective filter circuit 113 and the second frequency-selective filter circuit 123 can also isolate the electromagnetic wave signals transmitted and received by the first antenna 110 and the electromagnetic wave signals transmitted and received by the second antenna 120 from each other.
Referring to fig. 2, fig. 2 is a schematic diagram of an antenna element provided in one embodiment of fig. 1. In this embodiment, the first frequency selective filter circuit 113 includes one or more sub-frequency selective filter circuits 113a, the second frequency selective filter circuit 123 includes one or more sub-frequency selective filter circuits 113a, and the sub-frequency selective filter circuit 113a is further configured to isolate the first antenna 110 from the second antenna 120. In the schematic diagram of the present embodiment, the first frequency-selective filter circuit 113 includes 2 frequency-selective sub-filter circuits 113a connected in parallel, and the second frequency-selective filter circuit 123 includes 2 frequency-selective sub-filter circuits 113a connected in series. Each sub-band selection filter circuit 113a in the first band selection filter circuit 113 and each sub-band selection filter circuit 113a in the second band selection filter circuit 123 can isolate the first antenna 110 and the second antenna 120. In other words, each sub-band selection filter circuit 113a in the first band selection filter circuit 113 and each sub-band selection filter circuit 113a in the second band selection filter circuit 123 can prevent electromagnetic wave signals transmitted and received by the first antenna 110 and electromagnetic wave signals transmitted and received by the second antenna 120 from interfering with each other. It should be noted that the sub-band selection filter circuit 113a in the first band selection filter circuit 113 may be the same as or different from the sub-band selection filter circuit 113a in the second band selection filter circuit 123. When the first frequency-selective filter circuit 113 includes a plurality of frequency-selective filter circuits 113a, the plurality of frequency-selective filter circuits 113a may be connected in series, in parallel, or the like. When the second frequency-selective filter circuit 123 includes a plurality of sub-frequency-selective filter circuits 113a, the plurality of sub-frequency-selective filter circuits 113a may be connected in series, in parallel, or the like. Each of the frequency sub-selective filter circuits 113a is described in detail below.
Referring to fig. 3 to 10 together, fig. 3 to 10 are schematic diagrams of the sub-frequency-selective filter circuit according to various embodiments. The sub frequency-selecting filter circuit 113a includes one or more of the following circuits.
Referring to fig. 3, in fig. 3, the sub-band-selection filter circuit 113a includes a band-pass circuit formed by an inductor L0 and the capacitor C0 connected in series.
Referring to fig. 4, in fig. 4, the sub-band selection filter circuit 113a includes a band elimination circuit formed by an inductor L0 and a capacitor C0 connected in parallel.
Referring to fig. 5, in fig. 5, the sub-frequency-selective filter circuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 is electrically connected with the first capacitor C1.
Referring to fig. 6, in fig. 6, the sub-frequency-selective filter circuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 is electrically connected with the first inductor L1.
Referring to fig. 7, in fig. 7, the sub-frequency-selective filter circuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, one end of the second capacitor C2 is electrically connected to the first end of the inductor L0, which is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to the end of the first capacitor C1, which is not connected to the inductor L0.
Referring to fig. 8, in fig. 8, the sub-frequency-selective filter circuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to the end of the capacitor C0 not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to the end of the first inductor L1 not connected to the capacitor C0.
Referring to fig. 9, in fig. 9, the sub-frequency-selective filter circuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of the whole formed by connecting the second capacitor C2 and the second inductor L2 in parallel is electrically connected with one end of the whole formed by connecting the first capacitor C1 and the first inductor L1 in parallel.
Referring to fig. 10, in fig. 10, the sub-frequency-selective filter circuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2, the first capacitor C1 and the first inductor L1 are connected in series to form a first unit 113b, the second capacitor C2 and the second inductor L2 are connected in series to form a second unit 113C, and the first unit 113b is connected in parallel to the second unit 113C.
Referring to fig. 11, fig. 11 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, the excitation signal generated by the second signal source 122 passes through the second frequency-selective filter circuit 123, and then is capacitively coupled and fed to the second radiator 121.
In an embodiment, an output end of the second frequency-selective filter circuit 123 is electrically connected to one end of a coupling capacitor C3, and one end of the coupling capacitor C3 is electrically connected to the second radiator 121. The excitation signal (i.e., the second excitation signal) generated by the second signal source 122 is fed to the second radiator 121 through the coupling capacitor C3 after passing through the second frequency-selective filter circuit 123. In another embodiment, a coupling capacitor C3 is formed between the output end of the second frequency-selective filter circuit 123 and the second radiator 121, and the excitation signal (i.e., the second excitation signal) generated by the second signal source 122 is fed to the second radiator 121 through the coupling capacitor C3 after passing through the second frequency-selective filter circuit 123.
After passing through the second frequency-selective filter circuit 123, the excitation signal generated by the second signal source 122 is capacitively coupled and fed to the second radiator 121, so that the electromagnetic wave signal transceived by the second antenna 120 has a higher efficiency bandwidth.
It is to be understood that in other embodiments, the excitation signal generated by the second excitation source is directly coupled to the second radiator 121 after passing through the second frequency-selective filter circuit 123. Specifically, the second excitation source is electrically connected to an input end of the second frequency-selective filter circuit 123, and an output end of the second frequency-selective filter circuit 123 is directly electrically connected to the second radiator 121.
Referring to fig. 12, fig. 12 is a schematic diagram of an antenna assembly according to yet another embodiment of the present application. The first radiator 111 includes a first sub-radiator 1111, a second sub-radiator 1112, and a third sub-radiator 1113. The first sub radiator 1111, the second sub radiator 1112, and the third sub radiator 1113 are sequentially bent and connected, and the first sub radiator 1111 and the third sub radiator 1113 are both located on the same side of the second sub radiator 1112. The first sub radiator 1111 has a first ground G1 deviating from the second sub radiator 1112, the first ground G1 is grounded, the second sub radiator 1112 has a first feeding point P1, the first feeding point P1 is electrically connected to the first frequency-selective filter circuit 112, the third sub radiator 1113 has a first free end F1 deviating from the second sub radiator 1112, the first free end F1 is adjacent to the second radiator 121.
The second radiator 121 includes a fourth sub-radiator 1211 and a fifth sub-radiator 1212. The fourth sub radiator 1211 is connected to the fifth sub radiator 1212 in a bent manner, and the fourth sub radiator 1211 has a second free end F2 facing away from the fifth sub radiator 1212, and the second free end F2 is spaced apart from the first radiator 111. In this embodiment, the second free end F2 is spaced apart from an end of the third sub radiator 1113 of the first radiator 111 facing away from the second sub radiator 1112. The fifth sub radiator 1212 has a second feeding point P2, and the second feeding point P2 is electrically connected to the second frequency-selective filter circuit 123. The fifth sub radiator 1212 has a second ground G2 facing away from the fourth sub radiator 1211, and the second ground G2 is grounded.
This configuration of the first radiator 111 and the second radiator 121 facilitates the antenna assembly 10 to be disposed at an angle with respect to the electronic device 1. When the antenna assembly 10 is arranged corresponding to the angle of the electronic device 1, the user can hardly hold the antenna assembly 10 when using the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a good communication effect.
In this embodiment, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 are illustrated as a rectangular bar shape, but in other embodiments, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 may have other shapes. Accordingly, in this embodiment, the fourth sub-radiator 1211 and the fifth sub-radiator 1212 are illustrated as being rectangular in shape, but in other embodiments, the fourth sub-radiator 1211 and the fifth sub-radiator 1212 may have other shapes.
In this embodiment, the first sub radiator 1111 and the third sub radiator 1113 both extend along a first direction D1, the second sub radiator 1112 extends along a second direction D2, and the first direction D1 is perpendicular to the second direction D2. In this embodiment, the fourth sub-radiator 1211 is disposed opposite to the third sub-radiator 1113, and the fourth sub-radiator 1211 extends along the first direction D1. The fifth sub radiator 1212 extends along the second direction D2. It is to be understood that, in other embodiments, the first direction D1 and the second direction D2 may not be perpendicular, and the first sub radiator 1111 may not be parallel to the third sub radiator 1113. The shapes and extending directions of the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 may be adjusted according to the environment in which the antenna assembly 10 is applied. Accordingly, in other embodiments, the shapes and extending directions of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 may also be adjusted according to the environment in which the antenna element is applied.
Referring to fig. 12, the first frequency-selective filter circuit 113 is electrically connected to the first feeding point P1, the first feeding point P1 of the first radiator 111 is located at the second sub-radiator 1112 or the third sub-radiator 1113, and when the first feeding point P1 of the first radiator 111 is located at different positions, the current distribution on the first radiator 111 is different.
Referring to fig. 13, fig. 13 is a schematic diagram of an antenna assembly according to still another embodiment of the present application. In this embodiment, the first radiator 111 includes a first sub-radiator 1111 and a second sub-radiator 1112. The first sub radiator 1111 is connected to the second sub radiator 1112 in a bent manner, the first sub radiator 1111 has a first ground G1 deviated from the second sub radiator 1112, the first ground G1 is grounded, the second sub radiator 1112 has a first free end F1 deviated from the first sub radiator 1111, and the first free end F1 is adjacent to the second radiator 121. The second sub radiator 1112 has a first feeding point P1 to electrically connect to the first frequency-selective filter circuit 113. The second radiator 121 includes a third sub-radiator 1113 and a fourth sub-radiator 1211, the third sub-radiator 1113 is connected to the fourth sub-radiator 1211 in a bent manner, the third sub-radiator 1113 has a second free end F2 departing from the fourth sub-radiator 1211, and the second free end F2 and the first free end F1 are spaced apart from each other. That is, the second free end F2 is spaced apart from an end of the second sub radiator 1112 facing away from the first sub radiator 1111. The third sub radiator 1113 has a second feeding point P2 to electrically connect to the second frequency-selective filter circuit 123, the fourth sub radiator 1211 has a second ground G2 facing away from the third sub radiator 1113, and the second ground G2 is grounded.
This configuration of the first radiator 111 and the second radiator 121 facilitates the antenna assembly 10 to be disposed on the side of the electronic device 1. When the antenna assembly 10 is disposed corresponding to a side (e.g., a top side) of the electronic device 1, the antenna assembly 10 is difficult to hold by a user when the user holds the side of the electronic device 1 while using the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a good communication effect.
In an embodiment, the second antenna 120 is further configured to transceive electromagnetic wave signals in a WIFI 5G frequency band (5.725GHz to 5.825 GHz). Specifically, the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the first frequency selection filter circuit 113 and the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the second frequency selection filter circuit 123 are set, so that the second antenna 120 can transmit and receive electromagnetic wave signals in the first frequency band, at least one of the second frequency band and the third frequency band, and the second antenna 120 can transmit and receive electromagnetic wave signals in the WIFI 5G frequency band. It should be noted that, when the second antenna 120 receives and transmits the electromagnetic wave signal in the first frequency band, and can receive and transmit the electromagnetic wave signal in at least one of the second frequency band and the third frequency band, and also can receive and transmit the electromagnetic wave signal in the WIFI 5G frequency band, the second antenna 120 can receive and transmit the electromagnetic wave signal in the first frequency band, the electromagnetic wave signal in at least one of the second frequency band and the third frequency band, and the electromagnetic wave signal in the WIFI 5G frequency band at the same time.
With reference to the above embodiments, the length of the first radiator 111 is greater than that of the second radiator 121, and the frequency band of the electromagnetic wave signal transmitted and received by the first antenna 110 is lower than that of the electromagnetic wave signal transmitted and received by the second antenna 120.
When the first radiator 111 includes a plurality of sub-radiators and the second radiator 121 includes a plurality of sub-radiators, the length of the first radiator 111 is greater than the length of the second radiator 121, which means that the sum of the lengths of the sub-radiators in the first radiator 111 is greater than the sum of the lengths of the sub-radiators in the second radiator 121. The first radiator 111 shown in fig. 12 includes a first sub-radiator 1111, a second sub-radiator 1112, and a third sub-radiator 1113; the second radiator 121 includes a fourth sub-radiator 1211 and a fifth sub-radiator 1212, for example. For convenience of description, the length of the first radiator 111 is marked as L1The length of the second radiator 121 is marked as L2The length of the first sub-radiator 1111 is marked as L11Length mark of the second sub-radiator 1112Is L12The length of the third sub radiator 1113 is marked as L13The length of the fourth sub-radiator 1211 is marked as L21The length of the fifth sub radiator 1212 is marked as L22. Then, there is L1＝L11+L12+L13；L2＝L21+L22. The length of the first radiator 111 is greater than the length of the second radiator 121, i.e., L1＞L2. In this embodiment, the length of the first radiator 111 is greater than that of the second radiator 121, and the frequency band of the electromagnetic wave signals received and transmitted by the first antenna 110 is lower than that of the electromagnetic wave signals received and transmitted by the second antenna 120, so that the antenna assembly 10 can cover more frequency bands during operation, and the communication effect of the antenna assembly 10 is improved.
It should be understood that, in this embodiment, the first radiator 111 is illustrated as being located on the left side of the second radiator 121, and in other embodiments, the location of the first radiator 111 and the location of the second radiator 121 may be located in other positions, for example, the first radiator 111 is located on the right side of the second radiator 121. Or, the first radiator 111 and the second radiator 121 are arranged up and down, and the first radiator 111 is located above the second radiator 121; alternatively, the first radiator 111 and the second radiator 121 are arranged up and down, and the first radiator 111 is located below the second radiator 121. In summary, the first radiator 111 and the second radiator 121 can be flexible according to the environment in which the antenna assembly 10 is applied. When the first radiator 111 is located on the right side of the second radiator 121, compared to the first radiator 111 located on the left side of the second radiator 121, the length and the feeding position of the first radiator 111 are changed, and the operating frequency bands of the two radiators are also exchanged.
Specifically, the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the first frequency selection filter circuit 113 and the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the second frequency selection filter circuit 123 are set, and the first antenna 110 is configured to receive and transmit electromagnetic wave signals in the GPS-L1 frequency band, electromagnetic wave signals in the WIFI 2.4G frequency band, electromagnetic wave signals in the LTE MHB frequency band, and electromagnetic wave signals in the N41 frequency band (2496MHz-2690 MHz).
It should be noted that the GPS mentioned herein refers to Positioning, including but not limited to Global Positioning System (GPS) Positioning, beidou Positioning, GLONASS Positioning, GALILEO Positioning, and the like. The WIFI 2.4G frequency band comprises 2.4 GHz-2.5 GHz; the LTE MHB Band refers to medium and High frequency (Middle High Band), and the frequency range is: 1000MHz to 3000 MHz.
Specifically, the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the first frequency selection filter circuit 113 and the frequency selection parameters (including the resistance value, the inductance value, and the capacitance value) of the second frequency selection filter circuit 123 are set, so that the first antenna 110 can transmit and receive electromagnetic wave signals in the GPS-L1 frequency band, electromagnetic wave signals in the WIFI 2.4G frequency band, electromagnetic wave signals in the LTE MHB frequency band, and electromagnetic wave signals in the N41 frequency band, and the first antenna 110 can support more frequency bands. It should be noted that, when the first antenna 110 receives and transmits electromagnetic wave signals in the GPS-L1 frequency band, electromagnetic wave signals in the WIFI 2.4G frequency band, electromagnetic wave signals in the LTE MHB frequency band, and electromagnetic wave signals in the N41 frequency band, the first antenna 110 may receive and transmit electromagnetic wave signals in the GPS-L1 frequency band, electromagnetic wave signals in the WIFI 2.4G frequency band, electromagnetic wave signals in the LTE MHB frequency band, and electromagnetic wave signals in the N41 frequency band at the same time.
With reference to the antenna assembly 10 of the foregoing embodiments, the size d of the gap between the first radiator 111 and the second radiator 121 is as follows: d is more than or equal to 0.5mm and less than or equal to 2.0 mm. Referring specifically to fig. 1, the dimension d is illustrated in fig. 1. The size d of the gap between the first radiator 111 and the second radiator 121 is selected to be within the above range, so that a good coupling effect between the first radiator 111 and the second radiator 121 can be ensured. Further optionally, d is greater than or equal to 0.5mm and less than or equal to 1.5mm, so that the coupling between the first radiator 111 and the second radiator 121 is higher and better.
The first antenna 110 is used for transceiving electromagnetic wave signals in a GPS-L1 frequency band, electromagnetic wave signals in a WIFI 2.4G frequency band, electromagnetic wave signals in an LTE MHB frequency band, and electromagnetic wave signals in an N41 frequency band; the second antenna 120 is used for transceiving electromagnetic waves in the WIFI 5G frequency band, the N78 frequency band, the N77 frequency band, and the N79 frequency band, for example.
Referring to fig. 14, fig. 14 is a schematic diagram illustrating RL curves of a first antenna and a second antenna in an antenna assembly according to an embodiment. The RL curve is a Return Loss curve, which is called Return Loss, and is abbreviated as RL. In fig. 14, the abscissa is frequency in MHz; the ordinate is RL in dB. In fig. 14, a curve (i.e., a curve of a solid line in the drawing) is an RL curve of the first antenna 110, and a curve (i.e., a curve of a dotted line in the drawing) is an RL curve of the second antenna 120. As can be seen from the curve, the first antenna 110 has three modes, namely a first resonance mode a, a second resonance mode b and a third resonance mode c, and the working frequency band of the first antenna 110 covers 1500MHz to 3000 MHz; namely, electromagnetic wave signals of a GPS-L1 frequency band, electromagnetic wave signals of an LTE MHB frequency band, electromagnetic wave signals of a WIFI 2.4G frequency band and electromagnetic wave signals of an N41 frequency band are supported. The mode a supports a GPS-L1 frequency band, the mode b supports an LTE MHB frequency band, and the mode c supports a WIFI 2.4G frequency band and an N41 frequency band. As can be seen from the curve ii, the second antenna 120 has three modes, i.e., a fourth resonance mode d, a fifth resonance mode e, and a sixth resonance mode f, and the operating frequency band of the second antenna 120 covers 3300MHz to 6000 MHz; namely, electromagnetic wave signals of N78 frequency band, electromagnetic wave signals of N77 frequency band, electromagnetic wave signals of N79 frequency band and electromagnetic wave signals of WIIFI 5G frequency band are supported. The mode d supports an N78 frequency band, the mode e supports an N77 frequency band and an N79 frequency band, and the mode f supports a WIFI 5G frequency band. The mode d is generated by capacitively coupled feeding. As can be seen from fig. 14, the modes a to f have higher efficiency bandwidths, and the feeding points of the first radiator 111 of the first antenna 110 are located at different positions, so that the appearance sequence of each mode is different. For example, when the feeding point of the first radiator 111 in the first antenna 110 is the position shown in the foregoing, the RL curve of the first antenna 110 is as shown in fig. 14, when the feeding position of the first radiator 111 moves toward the gap between the first radiator 111 and the second radiator 121, the mode c occurs before the mode b, and the frequency bands supported by the modes c and b also change, for example, the mode b supports the WIFI 2.4G frequency band and the N41 frequency band, and the mode c supports the LTE MHB frequency band. In addition, as can be seen from the schematic diagram, the antenna assembly 10 can cover the Sub 6G frequency band, the MHB frequency band, and the UHB frequency band, and since the size of the antenna assembly 10 is small, the space utilization rate of the electronic device 1 to which the antenna assembly 10 is applied can be improved.
In order to facilitate understanding of the aforementioned modes, the main current distribution on the first radiator 111 and the second radiator 121 in each mode will be described in detail below with reference to each mode. Referring to fig. 15-20, fig. 15 is a schematic diagram of main current distribution corresponding to mode a; FIG. 16 is a schematic diagram of the main current distribution corresponding to mode b; FIG. 17 is a schematic diagram of the main current distribution corresponding to mode c; FIG. 18 shows the main current distribution for mode d; FIG. 19 is a graph of the main current distribution for mode e; fig. 20 shows the main current distribution corresponding to mode f. In order to enable the first antenna 110 and the second antenna 120 to support the modes described above, the first feeding point P1 on the first radiator 111 is adjacent to the middle point of the first radiator 111 and the portion of the second radiator 121 close to the middle point of the first radiator 111, and the second feeding point P2 on the second radiator 121 is adjacent to the gap between the second radiator 121 and the first radiator 111.
Referring to fig. 15, when the first antenna 110 resonates in the first resonant mode (mode a), the current of the first radiator 111 sequentially flows from the first ground G1 through the first feeding point P1 and the free end F1.
Referring to fig. 16, when the first antenna 110 resonates in the second resonant mode (mode b), the current of the first radiator 111 sequentially flows from the first feeding point P1 to the connection point of the second sub-radiator 1112 and the third sub-radiator 1113 and the first free end F1.
Referring to fig. 17, when the first antenna 110 resonates in the third resonant mode (mode c), the current of the first radiator 111 includes a first sub-current Ix and a second sub-current Iy, the first sub-current Ix flows to the first feeding point P1 through the first ground terminal G1, and the second sub-current Iy flows to the first feeding point P1 through the first free terminal F1.
Referring to fig. 18, when the second antenna 120 resonates in the fourth resonant mode, the current of the second radiator 121 flows from the second free end F2 to the second ground terminal F2, and also flows from the second feeding point P2 to the second ground terminal G2.
Referring to fig. 19, when the second antenna 120 resonates in the fifth resonant mode, the current of the second radiator 121 flows to the second free end F2 through the second ground G2.
Referring to fig. 20, when the second antenna 120 resonates in the sixth resonant mode, the current on the second radiator 121 flows to the second free end G2 through the second feeding point P2.
It should be noted that fig. 15 to 20 show the main current distributions corresponding to the respective modes, and do not represent the entire current distributions in the respective modes. Due to the coupling of the first radiator 111 and the second radiator 121, current is also coupled from the third sub-radiator 1113 to the fourth sub-radiator 1211 of the second radiator 121 and flows through the fourth sub-radiator 1211 and the fifth sub-radiator 1212 to ground. For example, in both the mode b and the mode c, the current distribution is also distributed to the second radiator 121, but in the mode b and the mode c, the current distribution to the second radiator 121 is not illustrated because the main current is distributed to the first radiator 111 and not to the second radiator 121. Similarly, in the modes d to f, the main current is distributed in the second radiator 121, and the current is also distributed in the first radiator 111 due to the coupling effect between the first radiator 111 and the second radiator 121.
Referring to fig. 21 and 22 together, fig. 21 is a perspective structural view of an electronic device according to an embodiment of the present application; FIG. 22 is a cross-sectional view taken along line I-I of FIG. 21, according to one embodiment. The electronic device 1 comprises an antenna assembly 10 according to any of the preceding embodiments.
Referring to fig. 23 and 24 together, fig. 23 is a top view of a metal frame according to an embodiment of the present application; fig. 24 is a top view of a metal frame according to another embodiment of the present application. The electronic device 1 further includes a metal frame 20. The metal frame 20 includes a frame body 210, a first metal segment 220, and a second metal segment 230. The first metal segment 220 and the second metal segment 230 are arranged at intervals, a gap is formed between the first metal segment 220 and the second metal segment 230 and the frame body 210 respectively, one end, deviating from the second metal segment 230, of the first metal segment 220 is connected with the frame body 210, one end, deviating from the first metal segment 220, of the second metal segment 230 is connected with the frame body 210, the first radiator 111 comprises the first metal segment 220, and the second radiator 121 comprises the second metal segment 230. In fig. 23, the corners of the frame body 210 corresponding to the first metal segments 220 and the second metal segments 230 are taken as an example for illustration; in fig. 24, the first metal segment 220 and the second metal segment 230 are illustrated as corresponding to the sides of the frame body 210.
Since a larger piece of metal can constitute a ground pole, the frame body 210 can constitute the ground pole, and one end of the first metal segment 220, which is away from the second metal segment 230, is connected to the frame body 210, so that the first metal segment 220 is grounded; one end of the second metal segment 230 facing away from the second metal segment 230 is connected to the frame body 210, so that the second metal segment 230 is grounded.
Referring to fig. 22 again, the metal frame 20 includes a frame 240, the frame 240 is bent and connected to the periphery of the frame body 210, and the first metal segment 220 and the second metal segment 230 are formed on the frame 240.
In the present embodiment, the metal housing 20 is the middle frame 30 of the electronic device 1.
The middle frame 30 is made of metal, such as aluminum magnesium alloy. The middle frame 30 generally forms a ground of the electronic device 1, and when the electronic devices in the electronic device 1 need to be grounded, the middle frame 30 can be connected to the ground. In addition, the ground system in the electronic device 1 includes a ground on the circuit board 50 and a ground in the screen 40 in addition to the middle frame 30.
In this embodiment, the electronic device 1 further includes a screen 40, a circuit board 50, and a battery cover 60. The screen 40 may be a display screen with a display function, or may be a screen 40 integrated with a display function and a touch function. The screen 40 is used for displaying information such as text, images, video, and the like. The screen 40 is supported by the middle frame 30 and is located at one side of the middle frame 30. The circuit board 50 is also generally carried by the middle frame 30, and the circuit board 50 and the screen 40 are carried by opposite sides of the middle frame 30. At least one or more of the first signal source 112, the second signal source 122, the first frequency selective filter circuit 113, and the second frequency selective filter circuit 123 of the antenna assembly 10 described above may be disposed on the circuit board 50. The battery cover 60 is disposed on a side of the circuit board 50 away from the middle frame 30, and the battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to form a complete electronic device 1. It should be understood that the structural description of the electronic device 1 is merely a description of one form of the structure of the electronic device 1, and should not be understood as a limitation on the electronic device 1, nor should it be understood as a limitation on the antenna assembly 10.
In other embodiments, the metal housing 20 is also referred to as the middle frame 30, and only one metal housing 20 is disposed inside the electronic device 1.
In other embodiments, the first radiator 111 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch; the second radiator 121 is an FPC antenna radiator, or an LDS antenna radiator, or a PDS antenna radiator, or a metal stub. The first radiator 111 may be disposed at an edge of the middle frame 30 and electrically connected to the middle frame 30. It is understood that, in other embodiments, the first radiator 111 and the second radiator 121 may be disposed at other positions and electrically connected to a ground system in the electronic device 1. The ground system in the electronic device 1 includes a middle frame 30, a screen 40, and a circuit board 50, the first radiator 111 and the second radiator 121 are electrically connected to the ground system of the electronic device 1, and the first radiator 111 and the second radiator 121 are electrically connected to any one or more of the middle frame 30, the screen 40, and the circuit board 50.
In one embodiment, the first radiator 111 and the second radiator 121 are the same type of antenna radiator and are disposed on the same substrate. The first radiator 111 and the second radiator 121 are of the same type and are disposed on the same substrate, so that the first radiator 111 and the second radiator 121 can be conveniently manufactured and the first radiator 111 and the second radiator 121 can be conveniently assembled with other components in the electronic device 1. In this embodiment, the electronic device 1 further includes a ground system, the ground system includes one or more of a middle frame 30, a circuit board 50, and a display screen, one end of the first radiator 111 facing away from the second radiator 121 is electrically connected to the ground system for grounding, and one end of the second radiator 121 facing away from the first radiator 111 is electrically connected to the ground system for grounding. In this embodiment, the first radiator 111 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch; the second radiator 121 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal stub, but when the first radiator 111 and the second radiator 121 are not directly formed on the middle frame 30, they need to be electrically connected to a ground system in the electronic device 1.
When the first radiator 111 is electrically connected to the ground of the middle frame 30, the first radiator 111 may be connected to the ground of the middle frame 30 through a connection rib, or the first radiator 111 is electrically connected to the ground of the middle frame 30 through a conductive elastic sheet. Similarly, when the second radiator 121 is electrically connected to the ground of the middle frame 30, the second radiator 121 may be connected to the ground of the middle frame 30 through a connection rib, or the second radiator 121 is electrically connected to the ground of the middle frame 30 through a conductive elastic sheet.
Referring to fig. 25, fig. 25 is a schematic diagram illustrating positions of a first radiator and a second radiator in an electronic device according to an embodiment. In this embodiment, the electronic device 1 includes a top portion 1a and a bottom portion 1b, and the first radiator 111 and the second radiator 121 are both disposed on the top portion 1 a.
By top 1a is meant the part of the electronic device 1 that is located above when in use, while the bottom 1b is the area opposite the top 1a that is located below the electronic device 1.
The top 1a includes three cases: the first radiator 111 and the second radiator 121 are disposed at an upper left corner of the electronic device 1; alternatively, the first radiator 111 and the second radiator 121 are disposed on the top side of the electronic device 1; or the first radiator 111 and the second radiator 121 are disposed at the upper right corner of the electronic device 1.
When the first radiator 111 and the second radiator 121 are disposed at the upper left corner of the electronic device 1, the following situations are included: a portion of the first radiator 111 is located at the left side, another portion of the first radiator 111 is located at the top side, and the second radiators 121 are all located at the top side; alternatively, the second radiator 121 is partially located on the top side, another portion of the second radiator 121 is located on the left side, and the first radiator 111 is located on the left side.
When the first radiator 111 and the second radiator 121 are disposed at the upper right corner of the electronic device 1, the following conditions are included: the first radiator 111 is partially located on the top side, another portion of the first radiator 111 is located on the right side, and the second radiator 121 is located on the right side; alternatively, the second radiator 121 is partially located on the right, the second radiator 121 is partially located on the top, and the first radiator 111 is partially located on the top.
When the electronic device 1 is placed stereoscopically, the top 1a of the electronic device 1 is generally facing away from the ground, while the bottom 1b of the electronic device 1 is generally close to the ground. When the first radiator 111 and the second radiator 121 are disposed on the top portion 1a, the upper hemispherical radiation efficiency of the first antenna 110 and the second antenna 120 is better, so that the first antenna 110 and the second antenna 120 have better communication efficiency. Of course, in other embodiments, the first radiator 111 and the second radiator 121 may be disposed corresponding to the bottom portion 1b of the electronic device 1, and although the upper hemispherical radiation efficiency of the first antenna 110 and the second antenna 120 is not so good when the first radiator 111 and the second radiator 121 are disposed corresponding to the bottom portion 1b of the electronic device 1, the communication effect may be better as long as the upper hemispherical radiation efficiency is greater than or equal to the predetermined efficiency.
Referring to fig. 26, fig. 26 is a schematic diagram illustrating positions of a first radiator and a second radiator in an electronic device according to another embodiment. The electronic device 1 in the present embodiment includes a first side 11, a second side 12, a third side 13, and a fourth side 14 connected end to end in this order. The first side 11 and the third side 13 are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1. The first edge 11 and the third edge 13 are opposite and spaced, the second edge 12 and the fourth edge 14 are opposite and spaced, the second edge 12 is respectively connected with the first edge 11 and the third edge 13 in a bent manner, and the fourth edge 14 is respectively connected with the first edge 11 and the third edge 13 in a bent manner. The connection between the first side 11 and the second side 12, the connection between the second side 12 and the third side 13, the connection between the third side 13 and the fourth side 14, and the connection between the fourth side 14 and the first side 11 all form corners of the electronic device 1. The first radiator 111 and the second radiator 121 may be disposed corresponding to any one corner of the electronic device 1, and it should be noted that both the first radiator 111 and the second radiator 121 are disposed corresponding to the same corner of the electronic device 1. When the first radiator 111 and the second radiator 121 are disposed corresponding to corners of the electronic device 1, the efficiency of the first antenna 110 and the efficiency of the second antenna 120 are higher. It should be understood that, in this embodiment, the first side 11 and the third pass are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1, for example, and in other embodiments, the first side 11, the second side 12, the third side 13, and the fourth side 14 are equal in length.
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 (20)

1. An antenna assembly, characterized in that the antenna assembly comprises:
the antenna comprises a first antenna and a second antenna, wherein the first antenna comprises a first radiating body, a first signal source and a first frequency-selecting filter circuit, and the second antenna comprises a second radiating body, a second signal source and a second frequency-selecting filter circuit;
the first radiator and the second radiator are arranged at intervals and are mutually coupled, one end of the first radiator, which is far away from the second radiator, is grounded, the first signal source is electrically connected with the first frequency-selecting filter circuit to the first radiator, one end of the second radiator, which is far away from the first radiator, is grounded, and the second signal source is electrically connected with the second frequency-selecting filter circuit to the second radiator;
the first antenna is used for generating at least one resonance mode, the second antenna is used for generating at least two resonance modes, the at least two resonance modes of the second antenna are used for covering the transceiving of electromagnetic wave signals of a first frequency band, a second frequency band and a third frequency band, and the at least one resonance mode of the second antenna is generated by the capacitive coupling feed excitation between the first antenna and the second antenna.
2. The antenna assembly of claim 1, wherein the first antenna has a first resonant mode, a second resonant mode, and a third resonant mode, and the second antenna has a fourth resonant mode, a fifth resonant mode, and a sixth resonant mode, the first resonant mode, the second resonant mode, the third resonant mode, the fourth resonant mode, the fifth resonant mode, and the sixth resonant mode collectively covering the transceiving of electromagnetic wave signals in the MHB and UHB bands.
3. The antenna assembly of claim 2, wherein the first frequency-selective filter circuit and the second frequency-selective filter circuit are configured to adjust a resonant frequency of the first antenna according to a preset first frequency-selective parameter, so that the first antenna resonates in the first resonant mode, the second resonant mode, and the third resonant mode, and wherein in the first resonant mode, the first antenna is configured to transceive electromagnetic wave signals in a fourth frequency band; in the second resonance mode, the first antenna is used for transceiving electromagnetic wave signals of a fifth frequency band; in the third resonance mode, the first antenna is configured to receive and transmit electromagnetic wave signals in a sixth frequency band and a seventh frequency band.
4. The antenna assembly of claim 3, wherein the first radiator comprises a first sub-radiator, a second sub-radiator, and a third sub-radiator, the first sub-radiator, the second sub-radiator, and the third sub-radiator are sequentially connected by bending, and the first sub-radiator and the third sub-radiator are both located on a same side of the second sub-radiator, the first sub-radiator has a first ground terminal facing away from the second sub-radiator, the first ground terminal is grounded, the second sub-radiator has a first feed point electrically connected to the first frequency selective filter circuit, the third sub-radiator has a first free end facing away from the second sub-radiator, and the first free end is located adjacent to the second radiator.
5. The antenna assembly of claim 4, wherein when the first antenna resonates in a first resonant mode, current on the first radiator flows from the first ground terminal through the first feed point and the first free end in sequence;
when the first antenna resonates in a second resonant mode, the current on the first radiating body sequentially flows to the connection point of the second sub radiating body and the third sub radiating body and the first free end from the first feeding point;
when the first antenna resonates in a third resonant mode, the current on the first radiator includes a first sub-current and a second sub-current, the first sub-current flows to the first feeding point through the first ground terminal, and the second sub-current flows to the first feeding point through the first free terminal.
6. The antenna assembly of claim 3, wherein the fourth frequency band comprises a GPS-L1 frequency band, the fifth frequency band comprises a LTE MHB frequency band, the sixth frequency band comprises a WIFI 2.4G frequency band, and the seventh frequency band comprises a N41 frequency band.
7. The antenna assembly according to any one of claims 2-6, wherein the first frequency selection circuit and the second frequency selection circuit are configured to adjust a resonant frequency of the second antenna according to a preset second frequency selection parameter, so that the second antenna resonates in the fourth resonant mode, the fifth resonant mode, and the sixth resonant mode, and in the fourth resonant mode, the second antenna is configured to transceive electromagnetic wave signals in a first frequency band; in the fifth resonance mode, the second antenna is used for transceiving electromagnetic wave signals of a second frequency band and a third frequency band; and in a sixth resonance mode, the second antenna is used for transceiving electromagnetic wave signals of an eighth frequency band.
8. The antenna assembly of claim 7, wherein the second radiator comprises a fourth sub-radiator and a fifth sub-radiator, the fourth sub-radiator is connected to the fifth sub-radiator at a bend, the fourth sub-radiator has a second free end facing away from the fifth sub-radiator, the second free end is spaced apart from the first radiator, the fifth sub-radiator has a second feeding point, the second feeding point is electrically connected to the second frequency-selective filter circuit, the fifth sub-radiator has a second ground facing away from the fourth sub-radiator, and the second ground is grounded.
9. The antenna assembly of claim 8, wherein current on the second radiator flows from the second free end to the second ground and also from the second feed point to the second ground when the second antenna resonates in the fourth resonant mode;
when the second antenna resonates in the fifth resonant mode, the current on the second radiator flows to the second free end through the second ground end;
when the second antenna resonates in the sixth resonant mode, the current on the second radiator flows to the second free end through the second feeding point.
10. The antenna assembly of claim 7, wherein the first frequency band comprises an N78 frequency band, the second frequency band comprises an N77 frequency band, the third frequency band comprises an N79 frequency band, and the eighth frequency band comprises a WIFI 5G frequency band.
11. The antenna assembly of claim 1, wherein the first radiator comprises a first sub-radiator and a second sub-radiator, the first sub-radiator is connected to the second sub-radiator at a bend, the first sub-radiator has a first ground terminal facing away from the second sub-radiator, the first ground terminal is grounded, the second sub-radiator has a first free terminal facing away from the first sub-radiator, the first free terminal is disposed adjacent to the second radiator, and the second sub-radiator has a first feed point for electrically connecting to the first frequency selective filter circuit; the second radiator comprises a third sub-radiator and a fourth sub-radiator, the third sub-radiator is connected with the fourth sub-radiator in a bent mode, the third sub-radiator is provided with a second free end deviating from the fourth sub-radiator, the second free end and the first free end are arranged at intervals, the third sub-radiator is provided with a second feed point to electrically connect the second frequency-selecting filter circuit, the fourth sub-radiator is provided with a second grounding end deviating from the third sub-radiator, and the second grounding end is grounded.
12. The antenna assembly of claim 1, wherein a dimension d of a gap between the first radiator and the second radiator is: d is more than or equal to 0.5mm and less than or equal to 1.5 mm.
13. The antenna assembly of claim 1, wherein the first frequency selective filtering circuit comprises one or more sub-frequency selective filtering circuits, and wherein the second frequency selective filtering circuit comprises one or more sub-frequency selective filtering circuits, the sub-frequency selective filtering circuits further configured to isolate the first antenna from the second antenna.
14. An antenna assembly according to claim 13, wherein the sub-frequency selective filtering circuitry comprises one or more of:
the inductor is connected with the capacitor in series to form a band-pass circuit;
the inductor and the capacitor are connected in parallel to form a band elimination circuit;
the inductor is connected with the first capacitor in parallel, and the second capacitor is electrically connected with a node where the inductor is electrically connected with the first capacitor;
the capacitor is connected with the first inductor in parallel, and the second inductor is electrically connected with a node where the capacitor is electrically connected with the first inductor;
the inductor is connected with the first capacitor in series, one end of the second capacitor is electrically connected with the first end of the inductor, which is not connected with the first capacitor, and the other end of the second capacitor is electrically connected with the end of the first capacitor, which is not connected with the inductor;
the capacitor is connected with the first inductor in series, one end of the second inductor is electrically connected with one end of the capacitor, which is not connected with the first inductor, and the other end of the second inductor is electrically connected with one end of the first inductor, which is not connected with the capacitor;
the circuit comprises a first capacitor, a second capacitor, a first inductor and a second inductor, wherein the first capacitor is connected with the first inductor in parallel, the second capacitor is connected with the second inductor in parallel, and one end of a whole formed by connecting the second capacitor and the second inductor in parallel is electrically connected with one end of a whole formed by connecting the first capacitor and the first inductor in parallel;
the circuit comprises a first capacitor, a second capacitor, a first inductor and a second inductor, wherein the first capacitor is connected with the first inductor in series to form a first unit, the second capacitor is connected with the second inductor in series to form a second unit, and the first unit is connected with the second unit in parallel.
15. The antenna assembly of claim 1, wherein the excitation signal generated by the second signal source is capacitively coupled to the second radiator after passing through a second frequency selective filter circuit.
16. An electronic device, characterized in that the electronic device comprises an antenna assembly according to any one of claims 1-15.
17. The electronic device of claim 16, further comprising a metal frame, wherein the metal frame comprises a frame body, a first metal segment and a second metal segment, the first metal segment and the second metal segment are spaced apart from each other, a gap is formed between each of the first metal segment and the second metal segment and the frame body, an end of the first metal segment away from the second metal segment is connected to the frame body, and an end of the second metal segment away from the first metal segment is connected to the frame body, wherein the first radiator comprises the first metal segment, and the second radiator comprises the second metal segment.
18. The electronic device of claim 17, wherein the metal frame comprises a frame, the frame is connected to a periphery of the frame body in a bent manner, and the first metal segment and the second metal segment are formed on the frame.
19. The electronic device of claim 16, further comprising a ground system including one or more of a bezel, a circuit board, and a display screen, wherein an end of the first radiator facing away from the second radiator is electrically connected to the ground system for ground, and an end of the second radiator facing away from the first radiator is electrically connected to the ground system for ground.
20. The electronic device of claim 16, wherein electronic device includes a top and a bottom, the first radiator and the second radiator both disposed on the top.
CN202011066431.XA 2020-09-30 2020-09-30 Antenna assembly and electronic equipment Pending CN112086753A (en)

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PCT/CN2021/109935 WO2022068373A1 (en) 2020-09-30 2021-07-31 Antenna assembly and electronic device
EP21874035.5A EP4224631A4 (en) 2020-09-30 2021-07-31 Antenna assembly and electronic device

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