CN114069237A - Antenna module and electronic equipment - Google Patents
Antenna module and electronic equipment Download PDFInfo
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- CN114069237A CN114069237A CN202111395498.2A CN202111395498A CN114069237A CN 114069237 A CN114069237 A CN 114069237A CN 202111395498 A CN202111395498 A CN 202111395498A CN 114069237 A CN114069237 A CN 114069237A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/04—Multimode antennas
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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
- H01Q5/20—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
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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
- H01Q5/30—Arrangements for providing operation on different wavebands
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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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/005—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with variable reactance for tuning the antenna
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Abstract
The application discloses an antenna module and electronic equipment, wherein the antenna module comprises a first radiating body, the first radiating body is an annular radiating body, and the first radiating body is provided with a first end part and a second end part; the second radiator is integrally connected or coupled with the first radiator; a first feed source, wherein a first end of the first feed source is electrically connected with the first end part, and a second end of the first feed source is grounded; and a first end of the first tuning unit is electrically connected with the second end part, and a second end of the first tuning unit is grounded.
Description
Technical Field
The application belongs to the technical field of antennas, and particularly relates to an antenna module and electronic equipment.
Background
Because the tuned frequency of the antenna cannot deviate from the frequency of the basic resonant mode too far, otherwise, the radiation efficiency of the antenna is rapidly reduced, and certain independent specific frequency bands are difficult to cover. For example, for the frequency bands of B32(1452MHz to 1496MHz), n74(1427MHz to 1518MHz), etc., the nearest adjacent frequency band is also B3(1710MHz to 1880 MHz); therefore, if B32/n74 is considered, it means that other common frequency bands such as B2(1850MHz to 1990MHz), B1(1920MHz to 2170MHz), B40(2300MHz to 2170MHz) and B7(2500MHz to 2690MHz) cannot be considered to be compatible with performance or even to be coverable.
It can be seen that the antenna module in the related art has a problem of small frequency coverage.
Disclosure of Invention
The application aims to provide an antenna module and electronic equipment, and the problem that the frequency coverage range of the antenna module in the related art is small can be solved.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides an antenna module, including:
the first radiator is an annular radiator and is provided with a first end part and a second end part;
the second radiator is integrally connected or coupled with the first radiator;
a first feed source, wherein a first end of the first feed source is electrically connected with the first end part, and a second end of the first feed source is grounded;
and a first end of the first tuning unit is electrically connected with the second end part, and a second end of the first tuning unit is grounded.
In a second aspect, an embodiment of the present application provides an electronic device, including the antenna module according to the first aspect.
In the embodiment of the present application, because the first radiator is an annular radiator, the characteristic that the frequency of each resonant mode is substantially identical to the multiple of the resonant mode of the first radiator (i.e., loop antenna) can be utilized, and then the adjustment of the electrical length of the first radiator is realized by adjusting the impedance of the first tuning unit, so that the first radiator can excite the frequency of each resonant mode, and the overlapping complementation of the adjustable ranges of the mode resonant frequencies is realized, thereby realizing the coverage of a common wireless communication frequency band without a dead angle, i.e., achieving the purpose of increasing the frequency coverage of the antenna module.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a structural diagram of an antenna module according to an embodiment of the present disclosure;
fig. 2 is a reflection coefficient-frequency diagram of an antenna module according to an embodiment of the present disclosure;
fig. 3 is a second structural diagram of an antenna module according to an embodiment of the present application;
fig. 4 is a third structural diagram of an antenna module according to an embodiment of the present application;
fig. 5 is a fourth structural diagram of an antenna module according to an embodiment of the present application;
fig. 6 is a structural diagram of a fourth tuning unit provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 6, an embodiment of the present application provides an antenna module, including:
a first radiator 10, wherein the first radiator 10 is an annular radiator, and the first radiator 10 has a first end portion 11 and a second end portion 12;
a second radiator 20, the second radiator 20 being integrally connected or coupled to the first radiator 10;
a first feed source 30, wherein a first end of the first feed source 30 is electrically connected with the first end part 11, and a second end of the first feed source 30 is grounded;
and a first end of the first tuning unit 40 is electrically connected with the second end part 12, and a second end of the first tuning unit 40 is grounded.
The second radiator 20 is integrally connected to the first radiator 10, which means that the second radiator 20 is directly connected to the first radiator 10; the second radiator 20 is coupled to the first radiator 10, which means that the second radiator 20 is coupled to the first radiator 10 through an antenna gap.
The first radiator 10 is a loop radiator, which means that the first radiator 10 is a loop (loop) structure, that is, in the case that the first radiator 10 of the antenna module transmits or receives signals, the first radiator 10 is a loop antenna radiator, that is, the first radiator 10 is essentially a loop antenna.
Also, for the first radiator 10 (i.e., loop antenna), the resonant mode excited by it is as shown in table 1, and the resonant mode λ/2 with the lowest frequency can be determined as the fundamental mode. Wherein the resonant modes of the first radiator 10 are continuous in multiples and can be stepped sequentially by λ/2. For example, assuming that the fundamental mode resonant frequency is 800MHz, the resonant mode frequency of the first radiator 10 should ideally be increased by 800 MHz.
TABLE 1
| Electrical length of loop antenna | λ/2 | λ | 3λ/2 | 2λ | 5λ/2 | 3λ |
| Frequency multiple of fundamental mode resonance | 1 | 2 | 3 | 4 | 5 | 6 |
| Resonant mode frequency (MHz) | 800 | 1600 | 2400 | 3200 | 4000 | 4800 |
In table 1, the electrical length represents a ratio of the physical length of the antenna to the wavelength of the transmitted electromagnetic wave, i.e., the electrical length of the loop antenna can understand a ratio of the physical length of the first radiator 10 to the wavelength of the transmitted electromagnetic wave.
Table 2 shows that the frequency bands with similar frequencies are combined to define the required resonant mode frequency according to the currently used wireless communication frequency band.
TABLE 2
As can be seen from tables 1 and 2, each resonant mode frequency substantially matches a multiple of the resonant mode of the first radiator 10 (i.e., the loop antenna). That is, when the first radiator 10 is an annular radiator, that is, the first radiator 10 is a loop antenna radiator, the characteristic that the frequency of each resonant mode is substantially identical to the multiple of the resonant mode of the first radiator 10 may be utilized, and then the adjustment of the electrical length of the first radiator 10 is realized by adjusting the impedance of the first tuning unit 40, so that the first radiator 10 can excite the frequency of each resonant mode, and the overlapping complementation of the adjustable ranges of the mode resonant frequencies is realized, thereby realizing the coverage of a common wireless communication frequency band without a dead angle, that is, achieving the purpose of increasing the frequency coverage of the antenna module.
Assuming that the fundamental mode resonant frequency is 800MHz, and the resonant mode frequency of the first radiator 10 can be increased by 800MHz in an ideal case, that is, the resonant mode frequency that the first radiator 10 can excite includes 800MHz, 1600MHz, … … 4000MHz, 4800MHz, and the like, and the first tuning unit 40 can be adjusted to enable the antenna module to cover the frequency bands of B28, B20, n74, n79, n77, B28, B1, B2, B3, B5, B7, B40, and the like in table 2, so that the purpose of effectively improving the frequency coverage of the antenna module can be achieved.
The first tuning unit 40 may be formed by combining a capacitor, an inductor, a resistor, and a switch, and may adjust the impedance of the first tuning unit 40 by switching the switch, so as to adjust the electrical length of the first radiator 10, so that the first radiator 10 may excite the frequency of each resonant mode, thereby implementing the overlapping complementation of the adjustable ranges of the mode resonant frequencies.
Moreover, since the first radiator 10 has the characteristics of multiple resonant modes, and the adjustment of the electrical length of the first radiator 10 can be realized through the first tuning unit 40, compared with the direct adjustment of the antenna trace, the structure of the antenna module can be effectively simplified and the workload of debugging the antenna trace can be reduced.
Optionally, the antenna module includes a first radiation branch 51, a first end of the first radiation branch 51 extends towards the first direction to form a second radiation branch 52, and a first end of the first radiation branch 51 extends towards the second direction to form a third radiation branch 53;
the first radiation branch 51 and the second radiation branch 52 are used to form the first radiator 10, that is, a ring radiator for forming a ring structure; the first radiation branch 51 and the third radiation branch 53 are used to form the second radiator 20.
In one example, the second radiator 20 may be an L-shaped linear structure.
In this embodiment, the first radiator 10 and the second radiator 20 may share part of the radiation branches, that is, share the first radiation branch 51, so as to achieve the purpose of reducing the physical length of the antenna module, and achieve the miniaturization design of the antenna module, so that the antenna module may be applied to electronic devices with smaller size.
As shown in fig. 1, the first radiation branch 51 and the second radiation branch 52 are used to form the first radiator 10, and the second end of the first radiation branch 51 is the second end 12, that is, the second end of the first radiation branch 51 can be set as a grounding point of the first radiator 10, that is, the first radiator 10 is electrically connected to the grounding structure through the second end of the first radiation branch 51.
As shown in fig. 1, the first tuning unit 40 includes a resistor, a variable capacitor, an inductor, a switch, and the like, and can connect the grounding point of the first radiator 10 to different devices, such as a 0 ohm resistor, inductors or capacitors with different values, by switching or combining the paths of the switch, so as to implement impedance tuning of the antenna module.
From the viewpoint of the topological structure of the Antenna, the first radiator 10 may be understood as a loop Antenna, the second radiator 20 may be understood as an Inverted-F Antenna (IFA), and the second end of the first radiation branch 51 is a common ground point of the first radiator 10 and the second radiator 20. As shown in fig. 1, the grounding points of the first radiator 10 and the second radiator 20 are high current regions of the antenna module. The high current area is grounded with a resistor of 0 ohm, which is equivalent to direct grounding, and the resonance mode is at the basic resonance frequency; the inductor is connected, so that a loading effect can be realized, namely the electrical length of the first radiator 10 is lengthened, and the resonant mode frequency is moved to a low frequency; the capacitance is connected to achieve a load-shedding effect, which corresponds to shortening the electrical length of the first radiator 10 and shifting the resonant mode frequency to a high frequency. That is, the first radiator 10 can excite the frequency of each resonant mode by adjusting the impedance of the first tuning unit 40, so as to realize the overlapping complementation of the adjustable ranges of the mode resonant frequencies.
As shown in tables 1 and 2, each frequency band always has a resonant mode close to its center frequency to cover, that is, the frequency of the resonant mode excited by the first radiator 10 is close to the center frequency corresponding to the frequency band in table 2, so that the first tuning unit 40 can adjust the electrical length of the first radiator 10, thereby implementing the overlapping and complementation of the adjustable ranges of the mode resonant frequencies, and achieving the purpose of increasing the frequency coverage of the antenna module.
In addition, for the second radiator 20, it can excite a λ/4monopole (monopole) resonant mode and can be used to support a 3 GHz-6 GHz band, so as to extend and supplement the frequency range covered by the first radiator 10. The principle of the resonant mode frequency shift of the second radiator 20 is similar to that of the first radiator 10, that is, when the second end of the first radiating branch 51 is directly grounded through a 0 ohm resistor, which is equivalent to direct grounding, the resonant mode is at the fundamental resonant frequency; when the second end of the first radiating branch 51 is grounded through an inductor, a loading effect is achieved, which is equivalent to lengthening the electrical length of the second radiator 20 and moving the resonant mode frequency to a low frequency; when the second end of the first radiating branch 51 is grounded by a capacitor, the load shedding effect is achieved, which is equivalent to shortening the electrical length of the second radiator 20 and shifting the resonant mode frequency to a high frequency.
As can be seen from the reflection coefficient-frequency diagram of the antenna module shown in fig. 2, the antenna module shown in fig. 1 can solve the problem that B32(1452MHz to 1496MHz) and n74(1427MHz to 1518MHz) are difficult to cover; moreover, mutual coverage compensation among the resonant modes enables any frequency band to be covered by the antenna resonant mode with adjacent frequency, and the problem that the frequency band efficiency is sharply reduced due to the fact that the frequency band is covered with dead angles and deviates from the frequency of the antenna resonant mode too far is avoided.
As shown in fig. 3, the first radiation branch 51 and the second radiation branch 52 are used to form the first radiator 10, and the second end of the first radiation branch 51 is the first end 11, that is, the second end of the first radiation branch 51 can be set as a feeding point of the first radiator 10, that is, the first radiator 10 is electrically connected to the first feed source 30 through the second end of the first radiation branch 51;
the antenna module further includes a second tuning unit 60, wherein a first end of the second tuning unit 60 is electrically connected to the feeding point, and a second end of the second tuning unit 60 is electrically connected to the first end of the first feed 30.
In this embodiment, the antenna module may not only excite the first radiator 10 and the second radiator 20 to radiate, but also excite a third radiator to radiate, where the third radiator includes the third radiation branch 53 and the other part of the first radiator 10 except the first radiation branch 51.
The operation principle of the first radiator 10 and the second radiator 20 in fig. 3 is the same as that of the first radiator and the second radiator in the antenna module shown in fig. 1, that is, the first radiator 10 may excite a loop resonance mode, and the second radiator 20 may excite a λ/4monopole resonance mode, and may reach a frequency range covered by the antenna module shown in fig. 1.
The resonant mode excited by the third radiator also belongs to a lambda/4 monopole resonant mode, but the resonant frequency is lower due to the longer electrical length of the resonant mode. Similar to the tuning of the second radiator 20, when the ground point of the third radiator, i.e., the second end 12 of the first radiator 10, is switched to 0 ohm resistive ground by the first tuning unit 40, its resonant mode is at the fundamental resonant frequency; when the grounding point of the third radiator, i.e. the second end 12 of the first radiator 10 is switched to the inductive grounding through the first tuning unit 40, the loading effect is achieved, which is equivalent to lengthening the electrical length of the second radiator 20 and moving the resonant mode frequency to a low frequency; when the grounding point of the third radiator, i.e. the second end 12 of the first radiator 10, is switched to capacitive grounding by the first tuning unit 40, a load-shedding effect is achieved, which corresponds to a shorter electrical length of the second radiator 20 and a shift of the resonant mode frequency to a higher frequency.
The second tuning unit 60 electrically connected to the first feed 30 includes devices such as a resistor, a variable capacitor, an inductor, and a switch, and the first end of the first feed 30 may be connected to different devices, such as a 0 ohm resistor, and inductors or capacitors with different values, by switching or combining the paths of the switch, so as to implement impedance tuning of the antenna module.
In the case that the first end of the first feed 30 is electrically connected to the feed point of the radiator through a capacitor (i.e., the impedance tuning device of the second tuning unit 60), and when the second tuning unit 60 is switched to a small-valued capacitor, the resonant frequency of the third radiator may be shifted toward a high-frequency direction; accordingly, when the second tuning unit 60 is switched to the high-value capacitor, the resonant frequency of the third radiator may be shifted to a low frequency direction.
Compared with the antenna module shown in fig. 1, the antenna module shown in fig. 3 can further enrich the tuning combination of the antenna module by connecting the tuning units to the first end portion 11 and the second end portion 12, and further improve the tuning flexibility of the resonant mode of the antenna module.
Alternatively, as shown in fig. 4, the second radiator 20 is coupled to the first radiator 10;
the second radiator 20 includes a third end portion 21 and a fourth end portion 22, the antenna module further includes a third tuning unit 70, a first end of the third tuning unit 70 is electrically connected to the third end portion 21, and a second end of the third tuning unit 70 is grounded;
here, the first radiator 10 may be understood as a loop antenna, and the second radiator 20 may be understood as an inverted F antenna.
In one example, the second radiator 20 may be an L-shaped linear structure.
The third tuning unit 70 includes a resistor, a variable capacitor, an inductor, a switch, and the like, and can connect the grounding point of the first radiator 10 to different devices, such as a 0 ohm resistor, inductors or capacitors with different values, by switching or combining the paths of the switch, so as to implement impedance tuning of the antenna module.
In this embodiment, by providing the third tuning unit 70, the frequency band coverage of the second radiator 20 can be effectively extended.
As shown in fig. 3, a first gap 91 is formed between the radiation branch of the first radiator 10 including the first end and the radiation branch of the second radiator 20 including the third end, and the first radiator 10 and the second radiator 20 are coupled and connected through the first gap 91.
In some embodiments, the first end and the second end may be spaced apart in a range of 1 mm to 2 mm; the distance range between the wires of the first radiator 10 may be 1 mm to 2.5 mm; the first end and the third end may be spaced apart by a distance in a range of 0.5 mm to 1.5 mm.
Also, the second radiator 20 may be understood as an inverted-L parasitic element antenna, and an interval between the first end portion 11 and the third end portion 21 may be understood as a magnetic field coupling feed region of the second radiator 20. The first end portion 11 is a strong current region and has strong magnetic field distribution; the second radiator 20 can be driven by spatial magnetic field coupling. After passing through the magnetic field coupling region, the second radiator 20 is separated from the first radiator 10 in a back-to-back manner, for example, the first radiator 10 is routed to the right, the second radiator 20 is routed to the left, and thus the second radiator 20 has an L-shaped linear structure. The design aims to always cancel the current offset effect of the first radiator 10 and the second radiator 20, and simultaneously, the radiator caliber of the whole antenna module can be enlarged, and the purposes of improving the antenna efficiency and the bandwidth are achieved.
It should be noted that the operation principle of the first radiator 10 and the second radiator 20 shown in fig. 4 is the same as that of the first radiator 10 and the second radiator 20 in the antenna module shown in fig. 1, that is, the first radiator 10 can excite a loop resonance mode, and the second radiator 20 can excite a λ/4monopole resonance mode, and can reach the frequency range covered by the antenna module shown in fig. 1.
Moreover, the second radiator 20 may excite a λ/4monopole (monopole) resonant mode, and may be configured to support a frequency band from 3GHz to 6GHz, so as to extend and supplement a frequency range covered by the first radiator 10.
In addition, for magnetic field coupling feeding, the resonance bandwidth of the second radiator 20 can be effectively increased. And the design of back-to-back separation also enables the resonant modes of the second radiator 20 and the first radiator 10 to be fused, and avoids antenna efficiency pits caused by mutual current cancellation.
The antenna module shown in fig. 4 can solve the problem that B32(1452MHz to 1496MHz) and n74(1427MHz to 1518MHz) are difficult to cover; moreover, the mutual coverage among the resonant modes makes up for the fact that the antenna resonant modes with adjacent frequencies cover any frequency band no matter the frequency band is low-frequency B28(703 MHz-803 MHz), or high-frequency n79(4400 MHz-5000 MHz), or even WIFI 5G (5.15 GHz-5.85 GHz), and the problem that the frequency band efficiency is sharply reduced due to the fact that the frequency band covers dead angles and deviates from the frequency of the antenna resonant mode too far is avoided.
Further alternatively, as shown in fig. 5, a fourth radiation branch 13 is formed by extending a side of the first radiator 10 facing the second radiator 20, and a second gap 92 is formed between a terminal of the fourth radiation branch 13 and the fourth end 22;
the antenna module further comprises a second feed 90, a first end of the second feed 90 is electrically connected with a second end of the third tuning unit 70, and a second end of the second feed 90 is grounded;
the first radiator 10 and the second radiator 20 are coupled and connected through the second gap 92.
The antenna module provided in this embodiment is similar to the antenna module shown in fig. 4, and the first radiator 10 may be understood as a loop antenna, and the second radiator 20 may be understood as an inverted F antenna. The first end 11 of the first radiator 10 has a feeding point, that is, the first radiator 10 can be electrically connected to the first feed source 30 through the feeding point of the first end 11, the second end 12 of the first radiator 10 has a grounding point, that is, the first radiator 10 can be grounded through the grounding point of the second end 12, and the first end 11 and the second end 12 need to be arranged closely, and the distance between the first end 11 and the second end 12 is in a range of 1 mm to 2 mm.
In one embodiment, the first radiator 10 may start from the first end 11 and form a ring structure, and the distance between the traces ranges from 1 mm to 2.5 mm.
Further optionally, the antenna module further includes a fourth tuning unit 80, a first end of the fourth tuning unit 80 is electrically connected to the first end portion 11, and a second end of the fourth tuning unit 80 is electrically connected to the first end of the first feed 30;
as shown in fig. 6, the fourth tuning unit 80 includes a first capacitor 81, a first resistor 82, a first switch 83, and a second switch 84, wherein a first end of the first capacitor 81 is electrically connected to the first end portion 11, and a second end of the first capacitor 81 is electrically connected to the first end of the first feed 30 through the first switch; a first terminal of the first resistor 82 is electrically connected to the first terminal 11, and a second terminal of the first resistor 82 is electrically connected to a first terminal of the first feed 30 through a second switch 84.
When the first end 11 of the first radiator 10 is switched to 0 ohm resistance to be electrically connected to the first feed source 30, that is, when the fourth tuning unit 80 is switched to 0 ohm resistance, the first radiator 10 can excite a loop resonance mode, and a routing path corresponding to an associated electrical length is shown as a path 1; when the first end portion 11 of the first radiator 10 is switched to a capacitor to be electrically connected with the first feed source 30, that is, when the fourth tuning unit 80 is switched to the capacitor, because the capacitor has a characteristic of blocking low frequency and high frequency, the first radiator 10 can excite two λ/4monopole resonance modes, and the routing paths corresponding to the electrical lengths associated with the two λ/4monopole resonance modes are respectively the path 2 and the path 3, the resonant mode frequency of the path 2 is relatively low and is generally designed to be about 0.7 GHz-1 GHz; the resonant mode frequency of path 3 is relatively high and is generally designed to be about 4.5 GMz-6 GHz.
Moreover, it should be noted that when the first end 11 of the first radiator 10 is switched to the small value capacitor to be electrically connected to the first feed 30, the resonant mode frequency of the first radiator 10 is shifted to the high frequency direction; accordingly, when the first end of the first radiator 10 is switched to the large value capacitor and electrically connected to the first feed 30, the resonant mode frequency of the first radiator 10 is shifted to a low frequency direction.
In this embodiment, the third end of the second radiator 20 and the fourth radiation branch 11 of the first radiator 10 may form an electric field coupling effect, so that the second radiator 20 is driven.
In addition, the second radiator 20 is characterized in that the λ/4 monoborole resonant mode can be excited, because the electrical length is short, the frequency of the λ/4 monoborole resonant mode is high, and generally considered to be about 3GHz to 6GHz, and the second radiator 20 can be used for supporting a frequency band of 3GHz to 6GHz, so as to expand and supplement the frequency range covered by the first radiator 10.
It should be noted that, in the antenna module provided in the embodiments of fig. 3, fig. 4, fig. 5, etc., the tuning modes can refer to the tuning modes of the antenna mode shown in fig. 1, which all utilize the characteristics of multiple resonant modes of the first radiator 10, and the first tuning unit 40 can adjust the electrical length of the first radiator 10, so that the first radiator 10 can excite the frequency of each resonant mode, and thus, the overlapping complementation of the adjustable ranges of the mode resonant frequencies is achieved.
In the tuning units such as the first tuning unit 40, the second tuning unit 60, the third tuning unit 70, and the fourth tuning unit 80 in the foregoing embodiment, since the variable capacitance is on for the radio frequency current in the high capacitance state, and off for the radio frequency current in the low capacitance state; therefore, the variable capacitor can be used for replacing the switch, and the frequency tuning of the resonant mode of the antenna module is realized by switching the capacitance values of different gears.
In addition, the tunable device in the tuning unit is not limited to a simple connection capacitor or inductor, and a bandpass or bandstop filter network built based on the capacitor or the inductor may be used to implement conduction or cut-off of a current with a specific frequency. Under special scenes such as less required frequency bands and the like, under the condition that the antenna module can meet the coverage, even a switch can be omitted, the adjustability is not needed, and the purpose of reducing the cost of the antenna module is achieved.
The embodiment of the application also provides an electronic device which comprises the antenna module.
It should be noted that, the implementation manner of the embodiment of the antenna module is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, which is not described herein again.
The electronic device may be a Mobile phone, a tablet Computer, a notebook Computer, a palm top Computer, a vehicle-mounted electronic device, a wearable device, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An antenna module, comprising:
the first radiator is an annular radiator and is provided with a first end part and a second end part;
the second radiator is integrally connected or coupled with the first radiator;
a first feed source, wherein a first end of the first feed source is electrically connected with the first end part, and a second end of the first feed source is grounded;
and a first end of the first tuning unit is electrically connected with the second end part, and a second end of the first tuning unit is grounded.
2. The antenna module of claim 1, wherein the antenna module comprises a first radiating branch, a first end of the first radiating branch extends in a first direction to form a second radiating branch, a first end of the first radiating branch extends in a second direction to form a third radiating branch, and the first direction and the second direction are different;
the first radiation branch and the second radiation branch are used for forming the first radiation body, and the first radiation branch and the third radiation branch are used for forming the second radiation body.
3. The antenna module of claim 2, wherein the second end of the first radiating stub is the second end.
4. The antenna module of claim 2, wherein the second end of the first radiating stub is the first end, the antenna module further comprising a second tuning element, wherein the first end of the second tuning element is electrically connected to the first end, and the second end of the second tuning element is electrically connected to the first end of the first feed.
5. The antenna module of claim 1, wherein the second radiator is coupled to the first radiator;
the second radiator comprises a third end portion and a fourth end portion, the antenna module further comprises a third tuning unit, a first end of the third tuning unit is electrically connected with the third end portion, and a second end of the third tuning unit is grounded.
6. The antenna module of claim 5, wherein a first gap is formed between the radiation branch of the first radiator including the first end and the radiation branch of the second radiator including the third end, and the first radiator and the second radiator are coupled and connected through the first gap.
7. The antenna module of claim 5, wherein a fourth radiation branch extends from a side of the first radiator facing the second radiator, and a second gap is formed between a terminal end of the fourth radiation branch and the fourth end portion;
the antenna module further comprises a second feed source, wherein a first end of the second feed source is electrically connected with a second end of the third tuning unit, and a second end of the second feed source is grounded;
the first radiator and the second radiator are coupled and connected through the second gap.
8. The antenna module of claim 7, further comprising a fourth tuning element, a first end of the fourth tuning element being electrically connected to the first end portion, and a second end of the fourth tuning element being electrically connected to the first end of the first feed.
9. The antenna module of claim 8, wherein the fourth tuning unit comprises a first capacitor, a first resistor, a first switch, and a second switch, a first end of the first capacitor is electrically connected to the first end portion, a second end of the first capacitor is connected to the first end of the first feed through the first switch, a first end of the first resistor is electrically connected to the first end portion, and a second end of the first resistor is electrically connected to the first end of the first feed through the second switch.
10. An electronic device, comprising an antenna module according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395498.2A CN114069237A (en) | 2021-11-23 | 2021-11-23 | Antenna module and electronic equipment |
| PCT/CN2022/132270 WO2023093592A1 (en) | 2021-11-23 | 2022-11-16 | Antenna module and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395498.2A CN114069237A (en) | 2021-11-23 | 2021-11-23 | Antenna module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114069237A true CN114069237A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111395498.2A Pending CN114069237A (en) | 2021-11-23 | 2021-11-23 | Antenna module and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114069237A (en) |
| WO (1) | WO2023093592A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093592A1 (en) * | 2021-11-23 | 2023-06-01 | 维沃移动通信有限公司 | Antenna module and electronic device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7420511B2 (en) * | 2002-11-18 | 2008-09-02 | Yokowo Co., Ltd. | Antenna for a plurality of bands |
| TWI487198B (en) * | 2011-06-03 | 2015-06-01 | Wistron Neweb Corp | A multi-band antenna |
| US10263319B2 (en) * | 2016-03-23 | 2019-04-16 | Mediatek Inc. | Antenna with swappable radiation direction and communication device thereof |
| CN109586036B (en) * | 2018-12-29 | 2021-04-06 | 维沃移动通信有限公司 | Antenna structure and wireless communication terminal |
| CN210956994U (en) * | 2019-12-30 | 2020-07-07 | 西安易朴通讯技术有限公司 | Antenna assembly and electronic equipment |
| CN113193336A (en) * | 2021-04-06 | 2021-07-30 | 深圳市广和通无线股份有限公司 | Antenna assembly and radio frequency control method |
| CN114069237A (en) * | 2021-11-23 | 2022-02-18 | 维沃移动通信有限公司 | Antenna module and electronic equipment |
-
2021
- 2021-11-23 CN CN202111395498.2A patent/CN114069237A/en active Pending
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- 2022-11-16 WO PCT/CN2022/132270 patent/WO2023093592A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093592A1 (en) * | 2021-11-23 | 2023-06-01 | 维沃移动通信有限公司 | Antenna module and electronic device |
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| Publication number | Publication date |
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| WO2023093592A1 (en) | 2023-06-01 |
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