CN114336010A - Antenna assembly and electronic equipment - Google Patents

Antenna assembly and electronic equipment Download PDF

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Publication number
CN114336010A
CN114336010A CN202111616568.2A CN202111616568A CN114336010A CN 114336010 A CN114336010 A CN 114336010A CN 202111616568 A CN202111616568 A CN 202111616568A CN 114336010 A CN114336010 A CN 114336010A
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CN
China
Prior art keywords
frequency band
antenna assembly
radiator
matching circuit
mode
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Pending
Application number
CN202111616568.2A
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Chinese (zh)
Inventor
吴小浦
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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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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Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202111616568.2A priority Critical patent/CN114336010A/en
Publication of CN114336010A publication Critical patent/CN114336010A/en
Priority to PCT/CN2022/133127 priority patent/WO2023124646A1/en
Pending legal-status Critical Current

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    • 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
    • H01Q1/48—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
    • 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
    • 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

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  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

The application provides an antenna assembly and an electronic device. The antenna assembly comprises a first radiating body, a first matching circuit, a first signal source, a second matching circuit and a second signal source. The first radiator comprises a first grounding end, a first free end, a first connection point and a second connection point, wherein the first connection point and the second connection point are positioned between the first grounding end and the first free end; the first matching circuit is electrically connected with the first connecting point; the first signal source is electrically connected to the first matching circuit; the second matching circuit is electrically connected with the second connection point; the second signal source is electrically connected to the second matching circuit; the antenna assembly is provided with a first resonance mode, a second resonance mode and a third resonance mode so as to support an LB frequency band and one or two frequency bands of an MB frequency band, an HB frequency band and a UHB frequency band. The antenna assembly of the application has good communication performance.

Description

Antenna assembly and electronic equipment
Technical Field
The application relates to the technical field of communication, in particular to an antenna assembly and electronic equipment.
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, an embodiment of the present application provides an antenna assembly, including:
the first radiator comprises a first grounding end, a first free end, a first connection point and a second connection point, wherein the first connection point and the second connection point are positioned between the first grounding end and the first free end;
a first matching circuit electrically connected to the first connection point;
a first signal source electrically connected to the first matching circuit;
a second matching circuit electrically connected to the second connection point; and
a second signal source electrically connected to the second matching circuit; the antenna assembly is provided with a first resonance mode, a second resonance mode and a third resonance mode so as to support an LB frequency band and one or two frequency bands of an MB frequency band, an HB frequency band and a UHB frequency band.
In a second aspect, embodiments of the present application provide an electronic device comprising an antenna assembly as described in the first aspect.
The antenna assembly that this application embodiment provided, first signal source is connected to through first matching circuit the first radiator, the second signal source is connected to through second matching circuit the first radiator to make the antenna assembly have first resonance mode, second resonance mode and third resonance mode, in order to support the LB frequency channel to and one frequency channel or two frequency channels in MB frequency channel, HB frequency channel and UHB frequency channel three, consequently, the antenna assembly can support the receiving and dispatching of the electromagnetic wave signal of more frequency channels at the same moment, and then can support the frequency channel of broad, so, the antenna assembly has better communication performance.
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 return loss curve corresponding to a first resonance mode in the antenna assembly shown in fig. 1.
Fig. 3 is a return loss curve diagram of the second resonant mode and the third resonant mode of the antenna assembly shown in fig. 1.
Fig. 4 is a schematic diagram showing the main current flow in the first resonance mode.
Fig. 5 is a schematic diagram showing the main current flow in the second resonance mode.
Fig. 6 is a schematic diagram showing the main current flow in the third resonance mode.
Fig. 7-14 are schematic diagrams of band-stop sub-circuits provided by various embodiments, respectively.
Fig. 15 is a schematic view of an antenna assembly provided in another embodiment of the present application.
Fig. 16 is a return loss curve diagram corresponding to the second resonant mode, the third resonant mode, and the fourth resonant mode in the antenna assembly shown in fig. 15.
Fig. 17 is a schematic diagram of the main current flow for the fourth resonant mode in the antenna assembly provided in fig. 15.
Fig. 18 is a schematic view of an antenna assembly provided in accordance with yet another embodiment of the present application.
Fig. 19 is a schematic diagram of the fourth matching circuit in fig. 18.
Fig. 20 is a return loss curve diagram corresponding to return losses of the fifth resonant mode, the sixth resonant mode and the seventh resonant mode supported by the antenna assembly in fig. 18.
Fig. 21 is a schematic diagram showing the main current flow in the fifth resonance mode.
Fig. 22 is a schematic diagram showing the main current flow in the sixth resonance mode.
Fig. 23 is a schematic diagram showing the main current flow in the seventh resonance mode.
Fig. 24 is a schematic view of an antenna assembly provided in accordance with yet another embodiment of the present application.
Fig. 25 is a graph illustrating return loss curves for the second mode, the fourth mode, and the eighth mode supported by the antenna assembly of fig. 24.
Fig. 26 is a schematic diagram showing the main current flow in the eighth resonance mode.
Fig. 27 is a schematic view of an antenna assembly provided in another embodiment of the present application.
Fig. 28 is a return loss plot of the first, second, and ninth resonant modes supported by the antenna assembly of fig. 27.
Fig. 29 is a schematic view of an antenna assembly provided in another embodiment of the present application.
Fig. 30 is a diagram illustrating a first antenna of an antenna assembly according to an embodiment.
Fig. 31 is a schematic diagram of a second antenna of the antenna assembly of fig. 30.
Fig. 32 is a diagram illustrating a third antenna in an antenna assembly according to an embodiment.
Fig. 33 is a perspective view of an electronic device according to an embodiment of the present application.
FIG. 34 is a cross-sectional view of the electronic device of FIG. 33 taken along line I-I, as provided by one embodiment.
Fig. 35 is a schematic diagram illustrating a position of a radiator in an antenna assembly in an electronic device according to an 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 (see fig. 33 to 35), where the electronic device 1 includes, but is not limited to, an electronic device 1 with 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, 2 and 3 together, fig. 1 is a schematic view of an antenna assembly according to an embodiment of the present application; FIG. 2 is a return loss curve corresponding to a first resonant mode in the antenna assembly shown in FIG. 1; fig. 3 is a return loss curve diagram of the second resonant mode and the third resonant mode of the antenna assembly shown in fig. 1. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first signal source S1, a second matching circuit M2, and a second signal source S2. The first radiator 110 includes a first ground 111, a first free end 112, and a first connection point P1 and a second connection point P2, the first connection point P1 and the second connection point P2 are located between the first ground 111 and the first free end 112. The first matching circuit M1 is electrically connected to the first connection point P1. The first signal source S1 is electrically connected to the first matching circuit M1. The second matching circuit M2 is electrically connected to the second connection point P2. The second signal source S2 is electrically connected to the second matching circuit M2; the antenna assembly 10 has a first resonant mode, a second resonant mode, and a third resonant mode to support an LB frequency band, and one or two of an MB frequency band, an HB frequency band, and a UHB frequency band.
The first radiator 110 may be 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 signal source refers to a device that generates an excitation signal (radio frequency signal). Specifically, the first signal source S1 may generate a first excitation signal, which is loaded onto the first radiator 110 via the first matching circuit M1 and the first connection point P1, so that the first radiator 110 radiates an electromagnetic wave signal according to the first excitation signal. Accordingly, the second signal source S2 may generate a second excitation signal, which is loaded onto the first radiator 110 via the second matching circuit M2 and the second connection point P2, so that the first radiator 110 radiates an electromagnetic wave signal according to the second excitation signal. Specifically, in this embodiment, the first radiator 110 receives and transmits an electromagnetic wave signal in an LB frequency band according to the first excitation signal generated by the first signal source S1. Accordingly, the second radiator 120 receives and transmits electromagnetic wave signals of one or two of the MB frequency band, the HB frequency band, and the UHB frequency band according to the second excitation signal generated by the first signal source S1. In other embodiments, the first radiator 110 receives and transmits the electromagnetic wave signal in the LB frequency band according to the first excitation signal generated by the first signal source S1. Correspondingly, the first radiator 110 receives and transmits one of an MB frequency band, an HB frequency band and an UHB frequency band according to the second excitation signal generated by the second signal source S2; or, the first radiator 110 receives and transmits electromagnetic wave signals of two frequency bands among an MB frequency band, an HB frequency band, and an UHB frequency band according to the second signal source S2. When the first radiator 110 receives and transmits one of an MB frequency band, an HB frequency band, and an UHB frequency band according to the second excitation signal generated by the second signal source S2, the method specifically includes: the first radiator 110 receives and transmits an MB frequency band, an HB frequency band, or an UHB frequency band according to the second excitation signal generated by the second signal source S2. When the first radiator 110 receives and transmits electromagnetic wave signals in two frequency bands of an MB frequency band, an HB frequency band, and an UHB frequency band according to the second signal source S2, the method specifically includes: the first radiator 110 receives and transmits an MB frequency band and an HB frequency band according to the second signal source S2; or, an MB frequency band and a UHB frequency band; or an HB band and a UHB band.
Referring to fig. 2 and fig. 3, the first resonant mode is used for supporting the transceiving of electromagnetic wave signals in the first frequency band. The second resonance mode is used for supporting the transceiving of electromagnetic wave signals of a second frequency band, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band. The third resonant mode is configured to support transceiving of electromagnetic wave signals in a third frequency band, where a frequency of the third frequency band is greater than a frequency of the second frequency band. The first, second, and third resonant modes
The first matching circuit M1 is configured to adjust current distribution of a resonant mode supported by the first radiator 110 via the first matching circuit M1, and further adjust width, resonant frequency point, and the like of a frequency band corresponding to a corresponding resonant mode. Specifically, in this embodiment, the first matching circuit M1 is configured to adjust the width and the resonant frequency point of the electromagnetic wave signal in the first frequency band transmitted and received by the first radiator 110.
The second matching circuit M2 is configured to adjust current distribution of a resonant mode supported by the first radiator 110 via the second matching circuit M2, so as to adjust a width and a resonant frequency point of a frequency band corresponding to a corresponding resonant mode. Specifically, in this embodiment, the second matching circuit M2 is configured to adjust a resonant frequency of an electromagnetic wave signal in a second frequency band transmitted and received by the first radiator 110; or, the second matching circuit M1 is configured to adjust resonant frequency points of electromagnetic wave signals in the second frequency band and the third frequency band, which are transmitted and received by the first radiator 110. The specific structures of the first matching circuit M1 and the second matching circuit M2 are described in detail later.
In the present embodiment, the first connection point P1 and the second connection point P2 do not coincide. In other words, the first connection point P1 is spaced apart from the second connection point P2. In the present embodiment, the second connection point P2 is adjacent to the first free end 112 compared to the first connection point P1.
In this embodiment, the frequency of the electromagnetic wave signal in the second frequency band is greater than the frequency of the electromagnetic wave signal in the first frequency band, and the frequency of the electromagnetic wave signal in the third frequency band is greater than the frequency of the electromagnetic wave signal in the second frequency band (i.e. the frequency of the second frequency band is less than the frequency of the third frequency band). Specifically, in this embodiment, the first frequency Band includes a low frequency Band (LB), the second frequency Band is located in an Ultra High Band (UHB) frequency Band, the third frequency Band is located in a UHB frequency Band, and a frequency of the second frequency Band is less than a frequency of the third frequency Band.
In other embodiments, the frequency of the electromagnetic wave signal of the second frequency Band is greater than the frequency of the electromagnetic wave signal of the first frequency Band, the frequency of the electromagnetic wave signal of the third frequency Band is greater than the frequency of the electromagnetic wave signal of the second frequency Band (i.e., the frequency of the second frequency Band is less than the frequency of the third frequency Band), and the second frequency Band and the third frequency Band are located in a Middle frequency (Middle Band) to Ultra High frequency (UHB) frequency Band. Specifically, the intermediate frequency (Middle Band) to Ultra High frequency (UHB) Band includes: medium frequency (MB), High frequency (HB), ultra High frequency (UHB). The second frequency band and the third frequency band include the following situations. In an embodiment, the second frequency band is located in an MB frequency band, and the third frequency band is located in an MB frequency band, an HB frequency band, or a UHB frequency band. In another embodiment, the second frequency band is located in the HB frequency band, and the third frequency band is located in the HB frequency band or the UHB frequency band. In yet another embodiment, the second frequency band is located in a UHB frequency band, and the third frequency band is located in a UHB frequency band.
The LB band means a band having a frequency lower than 1000MHz, that is, a frequency f of a low frequency band satisfies: f is less than 1000 MHz. The medium frequency and the high frequency can be called as medium-high frequency (MHB) for short, and the range of the MHB frequency band is as follows: 1000MHz-3000MHz, i.e. the frequency f of MHB frequency band satisfies: f is more than or equal to 1000MHz and less than 3000 MHz. Wherein the intermediate frequency (MB) band ranges from 1000MHz to 2200MHz, i.e. the frequency f of the MB band satisfies: f is more than or equal to 1000MHz and less than 2200 MHz; the frequency range of the HB frequency band is 2200MHz-3000MHz, namely, the frequency f of the HB frequency band satisfies: f is more than or equal to 2200MHz and less than 3000 MHz. The range of the so-called UHB band is: 3000MHz-10000MHz, namely, the frequency of the UHB frequency band satisfies: f is more than or equal to 3000MHz and less than 10000 MHz. In the antenna assembly 10 provided in the embodiment of the present application, the first signal source S1 is electrically connected to the first radiator 110 through the first matching circuit M1, and the second signal source S2 is electrically connected to the first radiator 110 through the second matching circuit M2, so that the antenna assembly 10 has the first resonant mode, the second resonant mode, and the third resonant mode to support the LB frequency band and support one or two of the MB frequency band, the HB frequency band, and the UHB frequency band, and therefore, the antenna assembly 10 can support the transceiving of electromagnetic wave signals in more frequency bands at the same time, that is, can support a wider frequency band, and therefore, the antenna assembly 10 has better communication performance.
Referring to fig. 2 and fig. 3 together, the frequency band supported by the first resonance mode can be seen through the Return Loss (RL) curve corresponding to the first resonance mode, and accordingly, the frequency band supported by the second resonance mode can be seen through the Return Loss curve of the second resonance mode, and the frequency band supported by the third resonance mode can be seen through the Return Loss curve of the third resonance mode. In fig. 2, the horizontal axis is frequency (f) in MHz and the vertical axis is RL in dB. In fig. 3, the horizontal axis is frequency (f) in MHz and the vertical axis is RL in dB. The second connection point P2 is located adjacent to the first free end 112 relative to the first connection point P1. the antenna assembly 10 has a first resonant mode (labeled as mode 1 in the figure), a second resonant mode (labeled as mode 2 in the figure), and a third resonant mode (labeled as mode 3 in the figure). The first resonance mode is used for supporting the transceiving of electromagnetic wave signals of the first frequency band. The second resonance mode is used for supporting the transceiving of the electromagnetic wave signal of the second frequency band. The third resonance mode is used for supporting the transceiving of electromagnetic wave signals of the third frequency band.
As can be seen from fig. 2, the first frequency band supported by the first resonance mode falls within the LB frequency band. The first matching circuit M1 includes a switch or a variable capacitor, and the first matching circuit M1 sets the switch and the variable capacitor according to preset matching parameters, so as to achieve that the first frequency band better covers the LB frequency band.
As can be seen from fig. 3, the second frequency band supported by the second resonant mode is located in the UHB frequency band, the third frequency band supported by the third resonant mode is also located in the UHB frequency band, and the frequency of the third frequency band is greater than that of the second frequency band. The second matching circuit M2 includes a switch and a variable capacitor, and the second matching circuit M2 adjusts the switch and the variable capacitor according to preset matching parameters, so that the second frequency band and the third frequency band better cover UHB frequency bands, such as N77, N78, and N79. It is understood that the preset matching parameter in the second matching circuit M2 is related to the second frequency band and the third frequency band, the preset matching parameter in the first matching circuit M1 is related to the first frequency band, and the preset matching parameter in the second matching circuit M2 is not necessarily related to the preset matching parameter in the first matching circuit M1.
In an embodiment, the second matching circuit M2 tunes the second frequency band and the third frequency band supported by the first radiator 110 according to preset matching parameters, so that when the second frequency band is located in the UHB frequency band and the third frequency band is located in the UHB frequency band, the second frequency band and the third frequency band jointly support N77, N78, and N79 frequency bands.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a main current flow of the first resonant mode. As can be seen from fig. 4, the current corresponding to the first resonant mode flows from the first ground terminal 111 to the first free terminal 112. In the present application, the schematic diagram of the main current flow in each mode shows the main current flow in each mode, and not all the currents flow. The first resonant mode is 1/8-1/4 wavelength mode from the first ground terminal 111 to the first free terminal 112.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a main current flow of the second resonant mode. As can be seen from fig. 5, the current corresponding to the second resonant mode flows from the first matching circuit M1 to the first free end 112. The second resonant mode is the 1/4 wavelength mode of the first matching circuit M1 to the first free end 112.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating a main current flow of the third resonant mode. As can be seen from fig. 6, the current corresponding to the third resonant mode is from the second matching circuit M2 to the first free end 112. The third resonant mode is a 1/4 wavelength mode of the second matching circuit M2 to the first free end 112.
The antenna assembly 10 has the first resonance mode, the second resonance mode, and the third resonance mode at the same time, so that the antenna assembly 10 can realize simultaneous operation of a plurality of resonance modes, and further can support a wide frequency band, and thus the antenna assembly 10 has a good communication performance.
The antenna assembly 10 satisfies at least one of the following: the first matching circuit M1 is used for isolating the second frequency band and the third frequency band; the second matching circuit M2 is used to isolate the first frequency band.
The specific case is described below. When the first radiator 110 is configured to support a first frequency band and a second frequency band, the first matching circuit M1 includes one or more band-stop sub-circuits 151, so as to isolate an influence of the second frequency band on the first frequency band. When the first radiator 110 is configured to support a first frequency band, a second frequency band, and a third frequency band, the first matching circuit M1 includes one or more band-stop sub-circuits 151 to isolate the second frequency band and the third frequency band from affecting the first frequency channel. Accordingly, when the first radiator 110 is configured to support a first frequency band and a second frequency band, the second matching circuit M2 includes one or more band-stop sub-circuits 151 to isolate an influence of the first frequency band on the second frequency band. When the first radiator 110 is configured to support a first frequency band, a second frequency band, and a third frequency band, the second matching circuit M2 includes one or more band-stop sub-circuits 151, so as to isolate the influence of the first frequency band on the second frequency band and the third frequency band. The band rejection sub-circuit 151 is also referred to as a frequency selective filter sub-circuit.
Referring to fig. 7-14 together, fig. 7-14 are schematic diagrams of the band stop sub-circuit according to various embodiments, respectively.
Referring to fig. 7, in fig. 7, the band-stop sub-circuit 151 includes a circuit formed by an inductor L0 and a capacitor C0 connected in series.
Referring to fig. 8, in fig. 8, the band-stop sub-circuit 151 includes a circuit formed by an inductor L0 and a capacitor C0 connected in parallel.
Referring to fig. 9, in fig. 9, the band-stop sub-circuit 151 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. 10, in fig. 10, the band-stop sub-circuit 151 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. 11, in fig. 11, the band-stop sub-circuit 151 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. 12, in fig. 12, the band-stop sub-circuit 151 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. 13, in fig. 13, the band-stop sub-circuit 151 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. 14, in fig. 14, the band-stop sub-circuit 151 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 series with the first inductor L1 to form a first cell 151a, the second capacitor C2 is connected in series with the second inductor L2 to form a second cell 151b, and the first cell 151a is connected in parallel with the second cell 151 b.
Referring to fig. 15, fig. 15 is a schematic diagram of an antenna element according to another embodiment of the present application. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first signal source S1, a second matching circuit M2, and a second signal source S2. The first radiator 110 includes a first ground 111, a first free end 112, and a first connection point P1 and a second connection point P2, the first connection point P1 and the second connection point P2 are located between the first ground 111 and the first free end 112. The first matching circuit M1 is electrically connected to the first connection point P1. The first signal source S1 is electrically connected to the first matching circuit M1. The second matching circuit M2 is electrically connected to the second connection point P2. The second signal source S2 is electrically connected to the second matching circuit M2. The first radiator 110 is configured to support the transceiving of electromagnetic wave signals in the first frequency band, the second frequency band, and the third frequency band. Further, in the present embodiment, the antenna assembly 10 further includes a second radiator 120. The second radiator 120 includes a second ground terminal 121 and a second free end 122, the second ground terminal 121 is grounded, the second free end 122 is disposed adjacent to the first free end 112 compared to the second ground terminal 121, and a gap 120a is formed between the second free end 122 and the first free end 112. The second radiator 120 is configured to support transceiving of electromagnetic wave signals in a fourth frequency band, where the frequency of the fourth frequency band is greater than the frequency of the second frequency band, and the frequency of the fourth frequency band is less than the frequency of the third frequency band.
The second radiator 120 is coupled to the first radiator 110, and in this embodiment, the second radiator 120 serves as a coupling branch of the first radiator 110. The second radiator 120 may be 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 120 may be of the same type as the first radiator 110, or may be of a different type from the first radiator 110, which is not limited in this application.
Referring to fig. 15, the size d of the gap 120a between the first radiator 110 and the second radiator 120 satisfies: d is more than or equal to 0.5mm and less than or equal to 1.5 mm.
It is understood that, for the antenna assembly 10, the slot 120a between the radiator of the first antenna 10a and the radiator of the second antenna 10b120 in the antenna assembly 10 satisfies d: d is not less than 0.5mm and not more than 1.5mm, so that a better coupling effect between the first radiator 110 and the second radiator 120 can be ensured. Although the antenna assembly 10 shown in fig. 14 is described as an example in the present embodiment, the sizes of the first radiator 110 and the second radiator 120 in the antenna assembly 10 are not limited to the above, and the gap 120a between the first radiator 110 and the second radiator 120 is also applicable to the antenna assemblies 10 provided in other embodiments.
In the antenna assembly 10 provided by this embodiment, the antenna assembly 10 has the first resonance mode, the second resonance mode, and the third resonance mode at the same time, so that the antenna assembly 10 can realize simultaneous operation of multiple resonance modes, and further can support a wider frequency band, and thus the antenna assembly 10 has better communication performance. In addition, in the antenna assembly 10 provided in the present application, the second radiator 120 is added to support the transmission and reception of the electromagnetic wave signal in the fourth frequency band, so that the antenna assembly 10 provided in the present application can support more frequency bands at the same time, and therefore, the antenna assembly 10 has better communication performance.
Referring to fig. 16, fig. 16 is a return loss curve diagram of the antenna assembly shown in fig. 15 corresponding to the second resonant mode, the third resonant mode, and the fourth resonant mode. In fig. 16, the horizontal axis represents frequency (f) in MHz, and the vertical axis represents RL in dB. In the present embodiment, the antenna assembly 10 has a second resonance mode (abbreviated as mode 2 in the drawing), a third resonance mode (abbreviated as mode 3 in the drawing), and a fourth resonance mode (abbreviated as mode 4 in the drawing). The second resonance mode is used for supporting the transceiving of the electromagnetic wave signal of the second frequency band. The third resonance mode is used for supporting the transceiving of electromagnetic wave signals of the third frequency band. The fourth resonance mode is configured to support transceiving of electromagnetic wave signals in the fourth frequency band.
In this embodiment, the second radiator 120 is arranged to simultaneously have the first resonance mode, the second resonance mode, and the third resonance mode at the same time, so that the antenna assembly 10 can simultaneously operate in multiple resonance modes, and further can support a wider frequency band, and thus the antenna assembly 10 has better communication performance.
Referring also to fig. 17, fig. 17 is a schematic diagram illustrating a main current flow of a fourth resonant mode in the antenna assembly shown in fig. 15. As shown in fig. 17, the current corresponding to the fourth resonant mode flows from the second ground terminal 121 to the slot 120 a. The fourth resonant mode of the antenna assembly 10 is the 1/4 wavelength mode from the second ground terminal 121 to the slot 120 a.
With continued reference to fig. 16, the second band includes N77 bands, the third band includes N79 bands, and the fourth band includes N78 bands.
It is to be understood that, in other embodiments, the second frequency Band, the third frequency Band and the fourth frequency Band may be located in any frequency Band between a medium frequency Band (Middle Band) and an Ultra High Band (UHB) frequency Band, as long as the frequency of the second frequency Band is less than the frequency of the fourth frequency Band, and the frequency of the fourth frequency Band is less than the frequency of the third frequency Band.
The antenna assembly 10 supports the WiFi-6E full band according to at least one of the first radiator 110 and the second radiator 120 having predetermined dimensional parameters.
When the first radiator 110 and the second radiator 120 are large in size, the frequency of the electromagnetic wave signal supported by the antenna assembly 10 is relatively low; accordingly, when the first radiator 110 and the second radiator 120 are small in size, the frequency of the electromagnetic wave signal supported by the antenna assembly 10 is relatively high. As can be seen from fig. 16, the second frequency band, the third frequency band, and the fourth frequency band are located between 3000MHz and 5000 MHz. When the size of at least one of the first radiator 110 and the second radiator 120 is compared with the size of the corresponding radiator in fig. 15, the frequency band supported by the antenna element 10 is shifted toward high frequency, and supports the WiFi-6E full frequency band. The WiFi-6E frequency band range is as follows: 5150 MHz-7125 MHz. In this embodiment, the size of at least one of the first radiator 110 and the second radiator 120 includes at least one of the following cases compared with the size of the corresponding radiator in fig. 15: the first radiator 110 is smaller than the first radiator 110 in fig. 15, and the second radiator 120 is smaller than the second radiator 120 in fig. 15. In other words, at least one of the first radiator 110 and the second radiator 120 supports the WiFi-6E full band according to the preset size parameter. When the antenna assembly 10 supports the WiFi-6E full frequency band, the antenna assembly 10 can support a frequency band with a higher frequency, and has a better communication effect. In other words, according to the predetermined size parameter, the second resonant mode, the fourth resonant mode and the third resonant mode supported by the antenna element 10 support the WiFi-6E full frequency band together by at least one of the first radiator 110 and the second radiator 120. When the second, fourth, and third resonant modes of the antenna assembly 10 collectively support the WiFi-6E full frequency band, the second, fourth, and third resonant modes supporting the WiFi-6E full frequency band are shifted in frequency overall as compared to the frequency bands supported by the second, fourth, and third resonant modes of the antenna assembly 10 located in the UHB frequency band (e.g., N77, N78, and N79).
Referring to fig. 18, fig. 18 is a schematic view of an antenna assembly according to another embodiment of the present application. In this embodiment, the antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first signal source S1, a second matching circuit M2, and a second signal source S2. The first radiator 110 includes a first ground 111, a first free end 112, and a first connection point P1 and a second connection point P2, the first connection point P1 and the second connection point P2 are located between the first ground 111 and the first free end 112. The first matching circuit M1 is electrically connected to the first connection point P1. The first signal source S1 is electrically connected to the first matching circuit M1. The second matching circuit M2 is electrically connected to the second connection point P2. The second signal source S2 is electrically connected to the second matching circuit M2. The antenna assembly 10 further includes a second radiator 120. The second radiator 120 includes a second ground terminal 121 and a second free terminal 122. The second ground 121 is grounded, the second free end 122 is disposed adjacent to the first free end 112 compared to the second ground 121, and the second free end 122 and the first free end 112 have a gap 120a, and further have a third connection point P3 and a fourth connection point P4, and the third connection point P3 and the fourth connection point P4 are located between the second ground 121 and the second free end 122. The antenna assembly 10 further includes a third matching circuit M3, a third signal source S3, and a fourth matching circuit M4. The third matching circuit M3 is electrically connected to the third connection point P3. The third signal source S3 is electrically connected to the third matching circuit M3. One end of the fourth matching circuit M4 is electrically connected to the fourth connection point P4, and one end of the fourth matching circuit M4 is grounded; the second radiator 120 is configured to support transceiving of electromagnetic wave signals in a fifth frequency band.
The second radiator 120 may be 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 120 may be of the same type as the first radiator 110, or may be of a different type from the first radiator 110, which is not limited in this application.
In this embodiment, the fifth frequency band is an MHB frequency band. In this embodiment, the antenna assembly 10 further includes a third matching circuit M3, a third signal source S3, and a fourth matching circuit M4, so that the second radiator 120 in the antenna assembly 10 further supports the transceiving of electromagnetic wave signals in the fifth frequency band, the antenna assembly 10 supports more frequency bands at the same time, and the antenna assembly 10 has a better communication effect.
In particular, the fourth matching circuit M4 is used to implement a low impedance to ground for the fourth frequency band supported by the fourth resonant mode. In other words, the fourth matching circuit M4 is configured to support the fourth resonant mode, and adjust the current distribution corresponding to the fourth resonant mode, thereby adjusting the width and the resonant frequency point of the fourth frequency band. For example, the fourth matching circuit M4 may be directly connected to ground, or a large capacitor may be connected to ground, or a small capacitor may be connected to ground.
In this embodiment, the fifth frequency band is an MHB frequency band. The fourth matching circuit M4 is used to achieve a low impedance to ground for the fourth frequency band supported by the fourth resonant mode, and the fourth matching circuit M4 presents a small capacitance to the fifth frequency channel, reducing the impact on the fifth frequency band.
Specifically, the third matching circuit M3 may include an active device such as a switch or a variable capacitor. The fourth matching circuit M4 may include a switch or a variable capacitor.
Referring to fig. 19, fig. 19 is a schematic diagram of the fourth matching circuit in fig. 18. The fourth matching circuit M4 includes a matching capacitor C11 and a matching inductor L11. One end of the matching capacitor C11 is electrically connected to the fourth connection point P4. One end of the matching inductor L11 is electrically connected to the other end of the matching capacitor C11, and the other end of the matching inductor L11 is grounded.
In one embodiment, when the fifth frequency band is the MHB frequency band, the capacitance value of the matching capacitor C11 is 0.2pF (pico farad), and the inductance value of the matching inductor L11 is 6.8nH (nano henry).
Referring to fig. 20, fig. 20 is a graph illustrating return loss curves corresponding to return losses of the fifth resonant mode, the sixth resonant mode and the seventh resonant mode supported by the antenna device in fig. 18. In fig. 20, the horizontal axis represents frequency (f) in MHz, and the vertical axis represents RL in dB. The antenna assembly 10 has a fifth resonant mode (abbreviated as mode 5 in the figure), a sixth resonant mode (abbreviated as mode 6 in the figure), and a seventh resonant mode (abbreviated as mode 7 in the figure) to jointly support the fifth frequency band.
Referring to fig. 21, 22 and 23, fig. 21 is a schematic diagram illustrating a main current flow of the fifth resonance mode. The current corresponding to the fifth resonance mode is from the second ground terminal 121 to the slot 120 a. The fifth resonance mode is an 1/4 wavelength mode from the second ground terminal 121 to the slot 120 a.
Referring to fig. 22, fig. 22 is a schematic diagram illustrating a main current flow of the sixth resonant mode. The current corresponding to the sixth resonant mode flows from the third matching circuit M3 to the slot 120 a. The sixth resonant mode is a 1/4 wavelength mode of the third matching circuit M3 to the slot 120 a.
Referring to fig. 23, fig. 23 is a schematic diagram illustrating a main current flow of the seventh resonant mode. The current corresponding to the seventh resonance mode includes: a sub-current I11 from the first matching circuit M1 to the slot 120a, and a sub-current I22 from the third matching circuit M3 to the slot 120 a. The seventh resonance mode is a 1/2 wavelength mode of the sum of the electrical length of the first matching circuit M1 to the slot 120a and the electrical length of the third matching circuit M3 to the slot 120 a.
In this embodiment, the antenna assembly 10 still has a fourth resonance mode, which is used for supporting the transceiving of electromagnetic wave signals in a fourth frequency band, and the fourth resonance mode is a 1/4 wavelength mode from the fourth matching circuit M4 to the slot 120 a.
Referring to fig. 24 and 25 together, fig. 24 is a schematic view of an antenna assembly according to yet another embodiment of the present application; fig. 25 is a graph illustrating return loss curves for the second mode, the fourth mode, and the eighth mode supported by the antenna assembly of fig. 24. In fig. 25, the horizontal axis represents frequency (f) in MHz, and the vertical axis represents RL in dB. In the antenna module 10 of the foregoing embodiment, the first connection point P1 and the second connection point P2 are disposed at an interval. The antenna assembly 10 in this embodiment includes a first radiator 110, a first matching circuit M1, a first signal source S1, a second matching circuit M2, and a second signal source S2. The first radiator 110 includes a first ground 111, a first free end 112, and a first connection point P1 and a second connection point P2, the first connection point P1 and the second connection point P2 are located between the first ground 111 and the first free end 112. The first matching circuit M1 is electrically connected to the first connection point P1. The first signal source S1 is electrically connected to the first matching circuit M1. The second matching circuit M2 is electrically connected to the second connection point P2. The second signal source S2 is electrically connected to the second matching circuit M2. The antenna assembly 10 further includes a second radiator 120. The second radiator 120 includes a second ground terminal 121 and a second free terminal 122. The second ground 121 is grounded, the second free end 122 is disposed adjacent to the second free end 122 compared to the second ground 121, and the second free end 122 and the first free end 112 have a gap 120a, and further have a third connection point P3 and a fourth connection point P4, and the third connection point P3 and the fourth connection point P4 are located between the second ground 121 and the second free end 122. The antenna assembly 10 further includes a third matching circuit M3, a third signal source S3, and a fourth matching circuit M4. The third matching circuit M3 is electrically connected to the third connection point P3. The third signal source S3 is electrically connected to the third matching circuit M3. One end of the fourth matching circuit M4 is electrically connected to the fourth connection point P4, and one end of the fourth matching circuit M4 is grounded.
In this embodiment, the first connection point P1 coincides with the second connection point P2, and the first radiator 110 is configured to support the first frequency band and the second frequency band.
The second radiator 120 has an eighth resonance mode according to a preset size parameter or at least one of the third matching circuit M3 and the fourth matching circuit M4 according to a preset matching parameter, where the eighth resonance mode is used for supporting the transceiving of electromagnetic wave signals of a third frequency band.
In this embodiment, the first connection point P1 coincides with the second connection point P2, the third resonance mode disappears, and the antenna assembly 10 has a second resonance mode (abbreviated as mode 2 in the drawing), a fourth resonance mode (abbreviated as mode 4 in the drawing), and an eighth resonance mode (abbreviated as mode 8 in the drawing). The second radiator 120 has an eighth resonance mode according to a preset size parameter or at least one of the third matching circuit M3 and the fourth matching circuit M4 according to a preset matching parameter, where the eighth resonance mode is used for supporting the transceiving of electromagnetic wave signals of a third frequency band.
Therefore, the antenna assembly 10 provided in the present embodiment can still support the transmission and reception of electromagnetic wave signals in the third frequency band in addition to the transmission and reception of electromagnetic wave signals in the first frequency band and the second frequency band at the same time, the number of frequency bands supported by the antenna assembly 10 at the same time is large, and the antenna assembly 10 has a good communication effect.
Referring to fig. 26, fig. 26 is a schematic diagram illustrating a main current flow of the eighth resonant mode. As can be seen from fig. 26, the eighth resonant mode corresponds to a first sub-current I1 and a second sub-current I2, the first sub-current I1 flows from the slot 120a to the third connection point P3, and the second sub-current I2 flows from the second ground terminal 121 to the third connection point P3. The eighth resonant mode is an 3/4 wavelength mode of the second radiator 120.
It should be noted that, in the antenna assembly 10 provided in the embodiments of the present application, in addition to supporting the eighth resonance mode, the antenna assembly 10 may still support the fifth resonance mode, the sixth resonance mode, and the seventh resonance mode.
Referring to fig. 27 and 28 together, fig. 27 is a schematic view of an antenna assembly according to another embodiment of the present application; fig. 28 is a return loss plot of the first, second, and ninth resonant modes supported by the antenna assembly of fig. 27. In fig. 28, the horizontal axis represents frequency (f) in MHz, and the vertical axis represents RL in dB. The antenna assembly 10 provided in this embodiment is substantially the same as the antenna assembly 10 provided in fig. 24 and the related description, the first connection point P1 coincides with the second connection point P2, and the first radiator 110 is configured to support the first frequency band and the second frequency band. The difference is that the antenna assembly 10 further includes a third radiator 130 in this embodiment. The third radiator 130 is electrically connected to the second matching circuit M2, and the third radiator 130 has a ninth resonance mode, where the ninth resonance mode is used for supporting the transceiving of electromagnetic wave signals in the third frequency band. In other words, in the present embodiment, the antenna assembly 10 supports a first resonance mode (abbreviated as mode 1 in the drawing), a second resonance mode (abbreviated as mode 2 in the drawing), and a ninth resonance mode (abbreviated as mode 9 in the drawing).
In the antenna assembly 10 provided in the present embodiment, the example that the antenna assembly 10 further includes the third radiator 130 is incorporated into the antenna assembly 10 provided in the previous embodiment is shown, and it is understood that the antenna assembly 10 further includes the third radiator 130 and may also be incorporated into the antenna assembly 10 provided in any of the previous embodiments.
In this embodiment, the third radiator 130 serves as a parasitic branch of the first radiator 110. The third radiator 130 may be a Flexible Printed Circuit (FPC) antenna radiator, a Laser Direct Structuring (LDS) antenna radiator, a PDS antenna radiator, or a metal stub. The third radiator 130 may be of the same type as the first radiator 110, or may be of a different type from the first radiator 110, which is not limited in this application.
The third radiator 130 has a ninth resonance mode, and the ninth resonance mode is used for supporting the transceiving of electromagnetic wave signals of the third frequency band. In other words, in the present embodiment, the third radiator 130 in the antenna assembly 10 has the ninth resonant mode, so as to replace the previous third resonant mode. Because the ninth resonant mode and the third resonant mode support the same frequency band, that is, both support the third frequency band, the antenna assembly 10 provided in the embodiment of the present application has more resonant modes at the same time, that is, can still support the transceiving of electromagnetic wave signals in more frequency bands, and has better communication performance.
Specifically, in this embodiment, the length of the third radiator 130 is 1/4-1/2 wavelengths in the third frequency band.
Referring also to fig. 29, fig. 29 is a schematic diagram of an antenna element according to another embodiment of the present application. In this embodiment, the antenna assembly 10 further includes a fifth matching circuit M5. The fifth matching circuit M5 is electrically connected to the first radiator 110 or the second radiator 120. In the schematic diagram of the present embodiment, it is illustrated that the fifth matching circuit M5 is electrically connected to the first radiator 110.
In the antenna assembly 10 provided in the present embodiment, the fifth matching circuit M5 is incorporated in the antenna assembly 10 provided in the previous embodiment as an example, and it is understood that the fifth matching circuit M5 may also be incorporated in the antenna assembly 10 provided in any of the previous embodiments.
The fifth matching circuit M5 is electrically connected to the first radiator 110 or the second radiator 120, and the fifth matching circuit M5 is used to facilitate tuning of a frequency band supported by the antenna assembly 10. Specifically, the fifth matching circuit M5 may include active devices such as a matching sub-circuit or a switch. In this embodiment, the fifth matching circuit M5 is electrically connected to the first radiator 110 for illustration. The fifth matching circuit M5 has one end grounded and the other end electrically connected between the first ground 111 and the first connection point P1.
In conjunction with the antenna assembly 10 provided in the previous embodiments, the antenna assembly 10 includes a first antenna 10a and a second antenna 10b (see fig. 30 and 31, fig. 30 is a schematic diagram of a first antenna in the antenna assembly in one embodiment, and fig. 31 is a schematic diagram of a second antenna in the antenna assembly in fig. 30). The first antenna 10a includes a first radiator 110, a first matching circuit M1 and a first signal source S1, the second antenna 10b includes a first radiator 110, a second matching circuit M2 and a second signal source S2, the first antenna 10a and the second antenna 10b are used together to realize the dual connection (LTE NR Double connection, endec) and Carrier Aggregation (CA) of the 4G radio access network and the 5G-NR in the frequency band range of 0MHz to 5000 MHz. In other words, the antenna assembly 10 may implement ENDC and CA for the LB + MHB + UHB frequency band range.
Therefore, the antenna assembly 10 of the present application can implement endec and support a 4G radio access network and a 5G-NR simultaneously, so that the antenna assembly 10 of the present application can improve transmission bandwidths of 4G and 5G and improve uplink and downlink rates, and has a better communication effect. In addition, the antenna assembly 10 provided by the embodiment of the application can realize CA and also has a good communication effect.
When the antenna assembly 10 further includes the second radiator 120, the third matching circuit M3, the fourth matching circuit M4, and the third signal source S3, the antenna assembly 10 further includes a third antenna 10c (please refer to fig. 32 together, fig. 32 is a schematic diagram of the third antenna in the antenna assembly in an embodiment), in other words, the third antenna 10c includes the second radiator 120, the third matching circuit M3, the fourth matching circuit M4, and the third signal source S3.
The first antenna 10a and the second antenna 10b share a first radiator 110, the first radiator 110 can be used for transceiving electromagnetic wave signals when the first antenna 10a operates, and the first radiator 110 can be used for transceiving electromagnetic wave signals when the second antenna 10b operates, so that the antenna assembly 10 can still operate in a wider frequency band under the condition of less radiators.
When the antenna assembly 10 includes the first antenna 10a, the second antenna 10b and the third antenna 10c, a common aperture of the three antennas can be realized. When the third antenna 10c operates, the second radiator 120 may be used to transmit and receive electromagnetic wave signals, and the first radiator 110 may be used to transmit and receive electromagnetic wave signals, so that the third antenna 10c may operate in a wider frequency band. In addition, since the first antenna 10a and the second antenna 10b may operate by using not only the first radiator 110 but also the second radiator 120 to transmit and receive electromagnetic wave signals, and the third antenna 10c may operate by using not only the second radiator 120 but also the first radiator 110, multiplexing of radiators in the antenna assembly 10 is achieved, which is advantageous for reducing the size of the antenna assembly 10. As can be seen from the above analysis, the antenna assembly 10 is small in size, facilitating stacking with other devices in the electronic device 1 when the antenna assembly 10 is used in the electronic device 1.
The present application further provides 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. 33, fig. 33 is a perspective view of an electronic device according to an embodiment of the present disclosure. The electronic device 1 comprises an antenna assembly 10 according to any of the preceding embodiments. The antenna assembly 10 is described above and will not be described in detail.
Referring to fig. 34, fig. 34 is a cross-sectional view of the electronic device in fig. 33 taken along the line I-I according to an embodiment. In the present embodiment, the electronic device 1 further includes a middle frame 30, a screen 40, a circuit board 50, and a battery cover 60. 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. 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 S1, the second signal source S2, the first matching circuit M1, the second matching circuit M2, the third matching circuit M3, the fourth matching circuit M4, and the fifth matching circuit M5 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.
The first radiator 110 is electrically connected to the middle frame 30, so that the grounding of the first radiator 110 can also be connected to the middle frame 30 through electrical connectors such as a connecting rib or a conductive elastic sheet. Similarly, the second radiator 120 is electrically connected to the middle frame 30 to be grounded, and the second radiator 120 may also be connected to the middle frame 30 through a connector, such as a connecting rib or a conductive elastic sheet.
The middle frame 30 includes a frame body 310 and a frame 320. The frame 320 is bent and connected to the periphery of the frame body 310, and any one of the first radiator 110, the second radiator 120, and the third radiator 130 in the above embodiments may be formed on the frame 320.
It is understood that, in other embodiments, the first radiator 110, the second radiator 120, and the third radiator 130 may also be formed on the frame 320, or be FPC antenna radiators, LDS antenna radiators, PDS antenna radiators, or metal branches.
Referring to fig. 35, fig. 35 is a schematic diagram illustrating a position of a radiator in an antenna assembly of an embodiment in an electronic device. In this embodiment, the electronic device 1 includes a top portion 1a and a bottom portion 1b, and the first radiator 110 and the second radiator 120 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 electronic device 1 in this 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 side 11 and the third side 13 are opposite and arranged at intervals, the second side 12 and the fourth side 14 are opposite and arranged at intervals, the second side 12 is respectively connected with the first side 11 and the third side 13 in a bending mode, and the fourth side 14 is respectively connected with the first side 11 and the third side 13 in a bending mode. The joint of the first side 11 and the second side 12, the joint of the second side 12 and the third side 13, the joint of the third side 13 and the fourth side 14, and the joint of the fourth side 14 and the first side 11 all form corners of the electronic device 1. The first side 11 is a top side, the second side 12 is a right side, the third side 13 is a bottom side, and the fourth side 14 is a left side. The corner formed by the first side 11 and the second side 12 is the upper right corner, and the corner formed by the first side 11 and the fourth side 14 is the upper left corner.
The top 1a includes three cases: the first radiator 110 and the second radiator 120 are disposed at an upper left corner of the electronic device 1; alternatively, the first radiator 110 and the second radiator 120 are disposed on the top side of the electronic device 1; or the first radiator 110 and the second radiator 120 are disposed at the upper right corner of the electronic device 1.
When the first radiator 110 and the second radiator 120 are disposed at the upper left corner of the electronic device 1, the following situations are included: a portion of the first radiator 110 is located at a left side edge, another portion of the first radiator 110 is located at a top edge, and the second radiators 120 are all located at the top edge; alternatively, the second radiator 120 is partially located on the top side, another portion of the second radiator 120 is located on the left side, and the first radiator 110 is located on the left side.
When the first radiator 110 and the second radiator 120 are disposed at the upper right corner of the electronic device 1, the following situations are included: the first radiator 110 is partially located on the top side, another portion of the first radiator 110 is located on the right side, and the second radiator 120 is located on the right side; alternatively, the second radiator 120 is partially on the right, the second radiator 120 is partially on the top, and the first radiator 110 is partially 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 110 and the second radiator 120 are disposed on the top portion 1a, the upper hemispherical radiation efficiency of the antenna assembly 10 is better, so that the antenna assembly 10 has better communication efficiency. Of course, in other embodiments, the first radiator 110 and the second radiator 120 may be disposed corresponding to the bottom portion 1b of the electronic device 1, and although the upper hemispherical radiation efficiency of the antenna assembly 10 is not so good when the first radiator 110 and the second radiator 120 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.
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 (23)

1. An antenna assembly, characterized in that the antenna assembly comprises:
the first radiator comprises a first grounding end, a first free end, a first connection point and a second connection point, wherein the first connection point and the second connection point are positioned between the first grounding end and the first free end;
a first matching circuit electrically connected to the first connection point;
a first signal source electrically connected to the first matching circuit;
a second matching circuit electrically connected to the second connection point; and
a second signal source electrically connected to the second matching circuit; the antenna assembly is provided with a first resonance mode, a second resonance mode and a third resonance mode so as to support an LB frequency band and one or two frequency bands of an MB frequency band, an HB frequency band and a UHB frequency band.
2. The antenna assembly of claim 1, wherein the second connection point is adjacent the first free end as compared to the first connection point,
the first resonance mode is used for supporting the transceiving of electromagnetic wave signals of a first frequency band;
the second resonance mode is used for supporting the transceiving of electromagnetic wave signals of a second frequency band, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band; and
the third resonant mode is configured to support transceiving of electromagnetic wave signals in a third frequency band, where a frequency of the third frequency band is greater than a frequency of the second frequency band.
3. The antenna assembly of claim 2,
the first resonance mode is 1/8-1/4 wavelength mode from a first grounding end to a first free end;
the second resonant mode is 1/4 wavelength mode from the first matching circuit to the first free end;
the third resonant mode is an 1/4 wavelength mode from the second matching circuit to the first free end.
4. An antenna assembly according to claim 3, wherein the first frequency band is an LB frequency band; the second frequency band and the third frequency band are both located from an MB frequency band to a UHB frequency band, and the frequency of the second frequency band is smaller than that of the third frequency band.
5. The antenna assembly of claim 4,
the second frequency band is located in an MB frequency band, and the third frequency band is located in an MB frequency band, an HB frequency band or an UHB frequency band; alternatively, the first and second electrodes may be,
the second frequency band is located in an HB frequency band, and the third frequency band is located in the HB frequency band or an UHB frequency band; alternatively, the first and second electrodes may be,
the second frequency band is located in a UHB frequency band, and the third frequency band is located in the UHB frequency band.
6. The antenna assembly of claim 5, wherein the second matching circuit tunes a second frequency band and a third frequency band supported by the first radiator according to predetermined matching parameters, such that the second frequency band and the third frequency band collectively support N77, N78, and N79 when the second frequency band is in the UHB frequency band and the third frequency band is in the UHB frequency band.
7. The antenna assembly of claim 2, wherein the antenna assembly satisfies at least one of: the first matching circuit is used for isolating the second frequency band from the third frequency band; the second matching circuit is used for isolating the first frequency band.
8. The antenna assembly of claim 2, further comprising:
the second radiator comprises a second grounding end and a second free end, the second grounding end is grounded, the second free end is arranged adjacent to the first free end compared with the second grounding end, a gap is formed between the second free end and the first free end, and the second radiator is used for supporting the receiving and transmitting of electromagnetic wave signals of a fourth frequency band, wherein the frequency of the fourth frequency band is greater than that of the second frequency band, and the frequency of the fourth frequency band is less than that of the third frequency band.
9. The antenna assembly of claim 8, further comprising:
a fourth resonance mode for supporting transceiving of electromagnetic wave signals of the fourth frequency band.
10. The antenna assembly of claim 9, wherein the fourth resonant mode is the 1/4 wavelength mode of the second ground to the slot.
11. The antenna assembly of claim 10, wherein the second band comprises an N77 band, the third band comprises an N79 band, and the fourth band comprises an N78 band.
12. The antenna assembly of claim 8, wherein at least one of the first radiator and the second radiator is dimensioned to support a WiFi-6E full band.
13. The antenna assembly of claim 1, further comprising:
a second radiator, the second radiator including a second ground terminal and a second free end, the second ground terminal being grounded, the second free end being disposed adjacent to the first free end compared to the second ground terminal, and the second free end and the first free end having a gap, and further having a third connection point and a fourth connection point, the third connection point and the fourth connection point being located between the second ground terminal and the second free end, the antenna assembly further including:
a third matching circuit electrically connected to the third connection point;
the third signal source is electrically connected with the third matching circuit; and
a fourth matching circuit, one end of which is electrically connected to the fourth connection point and one end of which is grounded; the second radiator is used for supporting the transceiving of electromagnetic wave signals of a fifth frequency band.
14. An antenna assembly according to claim 13, wherein the antenna assembly has a fourth resonant mode for supporting transceiving of electromagnetic wave signals in a fourth frequency band, the fourth resonant mode being an 1/4 wavelength mode of the fourth matching circuit to the slot, the fourth matching circuit for achieving low impedance to ground for the fourth frequency band supported by the fourth resonant mode.
15. The antenna assembly of claim 14, wherein the fourth matching circuit comprises:
a matching capacitor having one end electrically connected to the fourth connection point; and
and one end of the matching inductor is electrically connected with the other end of the matching capacitor, and the other end of the matching inductor is grounded.
16. An antenna assembly according to claim 13, wherein the antenna assembly has a fifth mode of resonance, a sixth mode of resonance, and a seventh mode of resonance to collectively support the fifth frequency band; wherein:
the fifth resonance mode is an 1/4 wavelength mode from the second ground to the slot;
the sixth resonant mode is an 1/4 wavelength mode from the third matching circuit to the slot;
the seventh resonant mode is 1/2 wavelengths of the sum of the electrical length of the first matching circuit to the slot and the electrical length of the third matching circuit to the slot.
17. The antenna assembly of claim 13, wherein the first connection point coincides with the second connection point, the first radiator configured to support the first frequency band and the second frequency band;
the second radiator has an eighth resonance mode according to a preset size parameter or at least one of the third matching circuit and the fourth matching circuit according to a preset matching parameter, where the eighth resonance mode is used for supporting the transceiving of electromagnetic wave signals in a third frequency band.
18. The antenna assembly of claim 17, wherein the eighth resonant mode is an 3/4 wavelength mode of the second radiator, wherein the eighth resonant mode corresponds to a first sub-current and a second sub-current, wherein the first sub-current flows from the slot to the third connection point and the second sub-current flows from the second ground terminal to the third connection point.
19. The antenna assembly of claim 1, wherein the first connection point coincides with the second connection point, and wherein the first radiator is configured to support the first frequency band and the second frequency band, the antenna assembly further comprising:
a third radiator electrically connected to the second matching circuit, the third radiator having a ninth resonant mode, the ninth resonant mode being configured to support transceiving of electromagnetic wave signals of a third frequency band.
20. The antenna assembly of claim 19, wherein the length of the third radiator is between 1/4 wavelengths and 1/2 wavelengths of the third frequency band.
21. The antenna assembly of any one of claims 1-20, further comprising:
a fifth matching circuit electrically connected to the first radiator; when the antenna assembly further includes a second radiator, the fifth matching circuit is electrically connected to the first radiator or the second radiator.
22. The antenna assembly of any one of claims 1-21, wherein 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 matching circuit and a first signal source, the second antenna comprises a first radiating body, a second matching circuit and a second signal source, and the first antenna and the second antenna are jointly used for realizing ENDC and CA within the frequency band range of 0 MHz-5000 MHz.
23. An electronic device, characterized in that the electronic device comprises an antenna assembly according to any one of claims 1-22.
CN202111616568.2A 2021-12-27 2021-12-27 Antenna assembly and electronic equipment Pending CN114336010A (en)

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