CN114843783B - Antenna module, antenna device and terminal - Google Patents
Antenna module, antenna device and terminal Download PDFInfo
- Publication number
- CN114843783B CN114843783B CN202210785128.8A CN202210785128A CN114843783B CN 114843783 B CN114843783 B CN 114843783B CN 202210785128 A CN202210785128 A CN 202210785128A CN 114843783 B CN114843783 B CN 114843783B
- Authority
- CN
- China
- Prior art keywords
- antenna
- module
- network circuit
- matching network
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Landscapes
- Details Of Aerials (AREA)
Abstract
An antenna module, comprising: a substrate; an antenna stub; an output end; one end of the matching network circuit is connected with the antenna branch knot, and the other end of the matching network circuit is connected with the output end; at least a part of the matching network circuit and the antenna branch are arranged on the surface of the substrate. The application provides an antenna module with a wider operating frequency band and a smaller size.
Description
Technical Field
The present application relates to the field of antenna technologies, and in particular, to an antenna module, an antenna apparatus, and a terminal.
Background
With the long-term evolution of wireless communication technologies, communication technologies of different standards and different standards emerge endlessly, and frequency bands adopted by the communication technologies are often different. In particular, the continuous development of wireless communication technology requires electronic devices to handle various communication standards including cellular, wiFi, bluetooth, etc., which makes the electronic devices need to meet more and more operating frequency bands. Meanwhile, modern wireless communication systems continue to be developed in a direction of miniaturization and multiple functions, which also puts higher demands on the size of electronic devices.
Therefore, there is a need for an antenna module with a wider operating frequency band and a smaller size.
Disclosure of Invention
The technical problem that this application was solved provides an antenna module that operating frequency bandwidth and size are more miniaturized.
To solve the above technical problem, an embodiment of the present application provides an antenna module, a substrate; an antenna stub; an output end; one end of the matching network circuit is connected with the antenna branch knot, and the other end of the matching network circuit is connected with the output end; wherein at least a portion of the matching network circuit and the antenna stub are disposed on a surface of the substrate.
Optionally, in a use state, the antenna module is mounted on a base, the substrate includes a first surface and a second surface opposite to each other, the second surface is used for facing the base, and the matching network circuit is disposed on the first surface.
Optionally, the antenna minor matters include first layer minor matters, second layer minor matters and first metal through hole, wherein, first layer minor matters set up in first face, second layer minor matters set up in the second face, first layer minor matters and second layer minor matters pass through first metal through hole connects.
Optionally, the output end is disposed on the second surface, and the other end of the matching network circuit is connected to the output end through a second metal via.
Optionally, the first metal via and the second metal via are disposed on the substrate and penetrate through the first surface and the second surface.
Optionally, the antenna branch is a dipole antenna.
Optionally, the matching network circuit includes one or more of: the matching network circuit is used for realizing impedance matching between the antenna branch and an external radio frequency module and/or expanding a working frequency band.
An embodiment of the present application further provides an antenna apparatus, including: the antenna module of any one of the above; and the antenna module is connected with the radio frequency module through the output end.
Optionally, the antenna device further includes: the antenna comprises a base body and a bottom plate, wherein the radio frequency module is arranged on the bottom plate, and the antenna module and the bottom plate are arranged on the base body.
Optionally, the method further includes: a connection assembly for connecting the antenna module with the radio frequency module.
Optionally, the connecting assembly includes a connecting feeder, and the connecting feeder is a radio frequency transmission line.
An embodiment of the present application further provides an electronic device including any one of the above antenna apparatuses.
Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:
in the solution of the embodiment of the present application, an antenna module includes: the antenna comprises a substrate, antenna branches, a matching network circuit and an output end, wherein one end of the matching network circuit is connected with the antenna branches, the other end of the matching network circuit is connected with the output end, and at least one part of the matching network circuit and at least one part of the antenna module are arranged on the surface of the substrate. In the solution of the embodiment of the present application, on one hand, since the antenna module is integrated with the matching network circuit, the requirement of multiple frequency bands can be met, so that the operating frequency band of the antenna module is wider. On the other hand, the matching network circuit is integrated on the surface of the substrate, so that the structure of the antenna module is more compact, the size of the antenna module is smaller, and the occupied size of the whole antenna device can be reduced compared with the scheme that the matching network circuit is arranged outside the substrate.
Further, under the user state, the antenna module is installed on the base member, and the base plate includes relative first face and second face, and the second face is used for facing the base member, and the matching network circuit sets up in first face. Compared with the scheme that the matching network circuit is arranged on the second surface of the substrate, the matching network circuit is arranged on the first surface of the substrate, the antenna module does not need to be heightened during use, and the antenna device is more beneficial to reducing the size occupation of the antenna module.
Further, the antenna branch knot comprises a first layer branch knot, a second layer branch knot and a first metal through hole, wherein the first layer branch knot is arranged on the first surface of the substrate, the second layer branch knot is arranged on the second surface of the substrate, and the first layer branch knot and the second layer branch knot are connected through the first metal through hole. In the scheme of this application embodiment, the antenna minor matters adopts multilayer structure, compares in the scheme of single-layer structure's antenna minor matters, is favorable to further reducing antenna module's size.
Drawings
Fig. 1 is a schematic perspective view of an antenna module in an embodiment of the present application;
fig. 2 is a top view of the antenna module of fig. 1;
fig. 3 is a bottom view of the antenna module of fig. 1;
fig. 4 is a schematic structural diagram of an antenna device in an embodiment of the present application;
fig. 5 is a return loss test chart of an antenna module according to an embodiment of the present application.
Detailed Description
As described in the background, there is a need for an antenna module with a wider operating frequency band and a smaller size.
In the prior art, in order to support multiple communication standards such as cellular network, wiFi, bluetooth, etc., multiple antennas are usually set in an electronic device, each antenna corresponds to a partial frequency band, and a target frequency band is covered by multiple antennas. Such a solution is obviously not conducive to the development of miniaturization of electronic devices. In addition, in the prior art, an external antenna is also generally adopted to meet the requirement of multiple frequency bands. For example, the wireless router usually employs an external antenna, but the external antenna is too large in size and is difficult to meet the requirement of miniaturization.
In order to solve the foregoing technical problem, an embodiment of the present application provides an antenna module, in a scheme of the embodiment of the present application, the antenna module includes: the antenna comprises a substrate, antenna branches, a matching network circuit and an output end, wherein one end of the matching network circuit is connected with the antenna branches, the other end of the matching network circuit is connected with the output end, and at least one part of the matching network circuit and at least one part of the antenna module are arranged on the surface of the substrate. In the solution of the embodiment of the present application, on one hand, since the antenna module is integrated with the matching network circuit, the requirement of multiple frequency bands can be met, so that the operating frequency band of the antenna module is wider. On the other hand, the matching network circuit is integrated on the surface of the substrate, so that the structure of the antenna module is more compact, the size of the antenna module is smaller, and the occupied size of the whole antenna device can be reduced compared with the scheme that the matching network circuit is arranged outside the substrate.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic perspective view of an antenna module according to an embodiment of the present disclosure, fig. 2 is a top view of the antenna module in fig. 1, and fig. 3 is a bottom view of the antenna module in fig. 1. The antenna module provided by the embodiment of the application can be applied to a device with a function of transceiving electromagnetic waves, for example, can be applied to a terminal, a network side device (e.g., a base station, a relay), a chip module, and the like with a function of transceiving electromagnetic waves.
The following non-limiting description of the antenna module in the embodiment of the present application is made with reference to fig. 1, fig. 2 and fig. 3.
As shown in fig. 1, the antenna module 10 may include: substrate 101, antenna stub 102, output terminal 103, and matching network circuit 104.
The antenna stub 102 may be configured to radiate electromagnetic waves, the output end 103 is configured to be connected to an external radio frequency module, and the Matching network circuit 104 may be configured to implement Impedance Matching (Impedance Matching) between the antenna stub 102 and the radio frequency module, and more specifically, the Matching network circuit 104 may be adjusted to implement Impedance Matching between the antenna stub 102 and the radio frequency module under different frequency bands, so as to widen an operating frequency band of the antenna module 10.
In a specific implementation, the antenna branch 102, the output terminal 103, and the matching network circuit 104 are all disposed on the substrate 101, and one end of the matching network circuit 104 is connected to the antenna branch 102, and the other end is connected to the output terminal 103. The substrate 101 is insulating, the material of the substrate 101 is not limited in the present embodiment, and the material of the substrate 101 may be glass fiber, ceramic, or an organic compound, but is not limited thereto.
In the solution of the embodiment of the present application, the matching network circuit 104 is disposed on the surface of the substrate 101.
Specifically, in the use state, the antenna module 10 may be disposed on a base (not shown in fig. 1). The use state refers to a state in which the antenna module 10 is mounted on the base in the antenna device, and is generally a state in which the antenna device is used with an external radio frequency module (for example, the antenna device and the radio frequency module are coupled or are completely provided with a coupling condition).
Further, the substrate 101 has opposite first and second faces 1011, 1012, and more particularly, the first and second faces 1011, 1012 may be parallel. Wherein the second side 1012 is intended to face the substrate, i.e. in a situation of use the second side 1012 faces the substrate. The surfaces of the substrate 101 other than the first surface 1011 and the second surface 1012 can be referred to as side surfaces of the base 101. Accordingly, fig. 2 shows a schematic structural diagram of a first side of an antenna module 10 in the embodiment of the present application, and fig. 3 shows a schematic structural diagram of a second side of the antenna module 10 in the embodiment of the present application.
As shown in fig. 1 and fig. 2, in an embodiment of the present application, the matching network circuit 104 may be disposed on the first side of the substrate 101.
In another embodiment of the present application, the matching network circuit 104 may also be disposed on the second side of the substrate 101. When the matching network circuit 104 is provided on the second surface of the substrate 101, the antenna module 10 needs to be raised so that a gap exists between the substrate 101 and the base in a use state.
In yet another embodiment of the present application, the matching network circuit 104 may also be disposed on a side of the substrate 101. In the case where the height of the antenna module 10 is limited, the matching network circuit 104 may be disposed on the side of the substrate 101 if the size of the side satisfies the size requirement of the matching network circuit 104, and the matching network circuit 104 may be disposed on the first surface 1011 or the second surface 1012 if the size of the side cannot satisfy the requirement of the matching network circuit 104.
Further, in the embodiment of the present application, at least a portion of the antenna branch 102 is disposed on the surface of the substrate 101. The antenna branch 102 is made of metal, such as copper, but not limited thereto.
In the solution of the embodiment of the present application, the number of the antenna branches 102 may be multiple, the multiple antenna branches 102 may be all disposed on the surface of the substrate 101, or a part of the multiple antenna branches 102 may be disposed on the surface of the substrate 101, and another part is disposed inside the substrate 101, for example, another part may be disposed between the first surface 1011 and the second surface 1012 of the substrate 101.
In the embodiment of the present application, the number of the antenna branches 102 is not limited, and the number of the antenna branches 102 may also be 1.
It should be noted that, in the embodiment of the present application, the shape of the antenna branch 102 is not limited, and for example, the shape may be a T-shaped branch, an L-shaped branch, and the like, and the routing and the shape of the antenna branch 102 may be set according to actual requirements.
In one embodiment, the antenna branches 102 may be a single layer structure. That is, the plurality of antenna branches 102 may be disposed on the same surface of the substrate 101, and for example, the plurality of antenna branches 102 may be disposed on the first surface 1011 of the substrate 101, may be disposed on the second surface 1012 of the substrate 101, or may be disposed on a side surface of the substrate 101.
In another embodiment, the antenna branches 102 may be a multi-layer structure.
As shown in fig. 1, 2 and 3, the antenna branches 102 may include a first layer of branches 1021, a second layer of branches 1022 and a first metal via 1013, wherein the first layer of branches 1021 is disposed on the first surface 1011, the second layer of branches 1022 is disposed on the second surface 1012, the first metal via 1013 may be disposed on the substrate 101, and the first layer of branches 1021 and the second layer of branches 1022 may be connected by the first metal via 1013. The first metal via 1013 penetrates the first surface 1011 and the second surface 1012, and the inner wall of the first metal via 1013 is made of metal.
In other embodiments, the antenna stub 102 may include: intermediate layer branches (not shown) and surface branches, wherein the surface branches comprise: the first layer of branches and/or the second layer of branches. The middle layer branch knot is located inside the substrate 101, the plane where the middle layer branch knot is located is parallel to the first surface 1011, and the middle layer branch knot can be connected with the surface branch knot through the metal through hole.
Compared with the above-mentioned scheme in which the plurality of antenna branches 102 are all disposed on the same plane, the scheme (that is, the antenna branches 102 are of a multilayer structure) is advantageous to further reduce the size of the antenna module 10.
In other embodiments, a part of the antenna branches 102 may be disposed on the side surface, and another part of the antenna branches 102 may be disposed on the first surface 1011 and/or the second surface 1012, which is not limited in this embodiment.
In one non-limiting example, antenna branches 102 may be dipole structures. The antenna comprises two identical branches, the two branches are two arms of the dipole antenna, and the two arms are in a symmetrical state. In other words, the two branches have the same structure and are mirror images.
Compared with the antenna branches of other structures, the dipole antenna has smaller size and is convenient to integrate, which is beneficial to making the structure of the antenna module 10 more compact, thereby making the size of the antenna module 10 smaller.
Further, the antenna branches 102 in the embodiment of the present application are double-sided dipole structures. Specifically, each branch may include a first layer portion and a second layer portion, wherein the first layer portion is disposed on the first side 1011, the second layer portion is disposed on the second side 1012, and the first layer portion and the second layer portion may be connected by a first metal via 1013.
By adopting the above scheme, the antenna branches 102 are arranged into a double-sided dipole structure, so that the electric field distribution of the antenna branches 102 can be changed, and the transverse cross polarization electric field components are mutually offset, thereby reducing the cross polarization between the antenna branches 102, obtaining good double resonance, and being beneficial to increasing the working bandwidth of the antenna module.
It should be noted that, in other embodiments, the antenna branch 102 may also be a Loop antenna (i.e., a Loop antenna) or a planar inverted F antenna (i.e., a PIFA antenna), which is not limited in this application.
Further, in the embodiment of the present application, the antenna branch 102 and the matching network circuit 104 may be located on the same surface of the substrate 101, or may be located on different surfaces of the substrate 101.
As shown in fig. 1 and 2, the matching network circuit 104 and the first layer of branches 1021 are disposed on the first side 1011 of the substrate 101, and the second layer of branches 1021 is disposed on the second side 1012 of the substrate 101. More specifically, the first level limb 1021 comprises a first level portion of two limbs and the second level limb comprises a second level portion of two limbs.
In other embodiments, the matching network circuit 104 and the second layer of branches 1022 may be disposed on the second surface 1012 of the substrate 101, and the first layer of branches 1021 is disposed on the first surface 1011 of the substrate 101.
Alternatively, the matching network circuit 104 may be disposed on a side surface of the substrate 101, the first layer branch 1021 may be disposed on the first surface 1011 of the substrate 101, and the second layer branch 1021 may be disposed on the second surface 1012 of the substrate 101, but the present invention is not limited thereto.
In a specific implementation, the matching network circuit 104 is connected to the antenna stub 102 at one end and to the output terminal 103 at the other end. Wherein the output terminal 103 may be a pad, which may be a metal pad.
In the embodiment of the present application, the output terminal 103 may be disposed on the second surface of the substrate 101.
Further, in the case where the matching network circuit 104 is not disposed on the second side 1012 (e.g., the matching network circuit 104 is disposed on the first side 1011), the output terminal 103 may be connected with the matching network circuit 104 through the second metal via 1014. In case the matching network circuit 104 is arranged on the second side 1012, it may be directly connected to the output terminal 103. The second metal via 1014 may be disposed on the substrate 101 and penetrate through the first surface 1011 and the second surface 1012, and an inner wall of the second metal via 1014 is made of metal.
In a specific implementation, the number of the output terminals 103 may be 2, wherein one output terminal 103 is used for grounding and the other output terminal 103 is used for connecting a feeding point. Correspondingly, the number of the second metal vias 1014 is also two, and the second metal vias correspond to the output terminals 103 one to one.
The matching network circuit 104 in the embodiment of the present application is described below in conjunction with fig. 2 in a non-limiting manner.
The matching network circuit 104 may include one or more lumped components 1041 and a plurality of matching pads 1042. The matching pads 1042 may be metal pads, and the distances between two adjacent matching pads 1042 may be equal; the lumped components 1041 may include one or more of the following: a capacitor, an inductor, and a resistor, wherein the resistance of the resistor may be 0 Ω (i.e., the resistor may be a 0 Ω resistor). It should be noted that the lumped component 1041 is a 0 Ω resistor, which means that two ends of the resistor are directly connected, and the capacitor and the inductor can be connected in series and/or in parallel.
In a specific implementation, the matching network circuit 104 may be formed by disposing the lumped components 1041 between the matching pads 1042, so that the impedance of the antenna stub 102 matches the impedance of an external rf module.
In different operating frequency bands, the impedance characteristics of the antenna branches 102 can be adjusted by changing the electrical characteristic parameters (e.g., capacitance values and inductance values) of the lumped components 1041 in the matching network circuit 104, so that the impedance characteristics of the antenna branches 102 can be matched with the impedance characteristics of the radio frequency module, and the operating frequency band of the antenna module 10 can be further expanded. In this process, since the position of the matching solder 1042 is fixed, changing the electrical characteristic parameters of the lumped component 1041 does not change the size of the antenna module 10, and thus the operating band can be widened without increasing the size of the antenna module 10.
It should be noted that, in the embodiment of the present application, the number of the lumped components 1041 in the matching network circuit 104 and the connection relationship between the lumped components 1041 are not limited, and may be set according to actual conditions and specific requirements.
In the scheme of the embodiment of the present application, by setting the matching network circuit 104 and cooperatively loading the distributed parameters (that is, the antenna branches 102) and the lumped components 1041, the size of the antenna can be reduced, and meanwhile, good multi-frequency characteristics can be realized, and the performance of the target frequency band can be improved.
As shown in fig. 2, when the antenna branches 102 are dipole antennas, the matching pads 1042 may be arranged in mirror symmetry.
Specifically, the plurality of matching pads 1042 can be divided into a first pad group and a second pad group, where the matching pads 1042 included in the first pad group and the second pad group have the same number and are distributed in mirror symmetry. More specifically, the first pad group may correspond to one stub in the dipole antenna, and the second pad group may correspond to another stub in the dipole antenna.
Further, the lumped components 1041 may be configured in one or more of the following manners:
mode 1: a lumped element 1041 may be disposed between any two matching pads 1042 in the first pad group, that is, one or more lumped elements 1041 may be connected in series between the corresponding branch and the output end 103 of the first pad group.
Mode 2: a lumped component 1041 may also be disposed between any two matching pads 1042 in the second pad group, that is, one or more lumped components 1041 may be connected in series between the corresponding branch of the second pad group and the output end 103.
Mode 3: capacitance and/or inductance may be provided between any one of the matching pads 1042 in the first pad group and any one of the matching pads 1042 in the second pad group, that is, capacitance and/or inductance may be connected in parallel throughout the path, thereby optimizing impedance matching. For example, as shown in fig. 2, 3 lumped components 1041 connected in parallel are provided between the first pad group and the second pad group.
In a non-limiting example, the number of the matching pads 1042 may be 8, and by using such a scheme, enough positions may be reserved for the lumped component 1041, so as to add the lumped component 1041 in the debugging process, so that the debugging of the antenna module 10 is more convenient, and thus the antenna module 10 may be flexibly applicable to different scenarios through the debugging of the matching network circuit 104.
It should be noted that, in the case that the lumped components 1041 are set in the manner 1 and the manner 2, the lumped components 1041 set in the manner 1 and the lumped components 1041 set in the manner 2 may be symmetrical or asymmetrical.
Therefore, the antenna module with the wide operating frequency band and the smaller size is provided by the embodiment of the application.
Further, in the solution of the embodiment of the present application, the antenna module 10 may further include: the housing may be made of various insulating materials, such as, but not limited to, plastic. In the non-use state, the substrate 101, the antenna branches 102, the matching network circuit 104, and other components may be disposed in the housing for storage and carrying.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an antenna apparatus in an embodiment of the present application. As shown in fig. 4, the antenna device 1 may include: antenna module 10, radio frequency module 20, bottom plate 30, base 40 and connection assembly.
The antenna module 10 may be the antenna module described above, and the rf module 20 may be a module for receiving and transmitting rf signals.
In one embodiment, the rf module 20 is disposed on a substrate 30, and the substrate 30 may be a printed circuit board. Further, the base plate 30 and the antenna module 10 may be disposed on the base 40, and the base 40 may be any suitable circuit board, which is not limited in this embodiment.
Specifically, the antenna module 10 may be fixed to the base 40 by a back adhesive, and may be soldered to the base 40. In one specific example, a bracket (not shown in fig. 4) is disposed on the base 40, and the antenna module 10 may be fixed to the bracket.
Further, the antenna module 10 and the rf module 20 may be connected by a connection assembly.
Specifically, the connection assembly may include: a first connection holder 501, a second connection holder 502, and a connection feeder 503.
In an implementation, the first connection socket 501 is connected to an output terminal of the antenna module 10, the second connection socket 502 is connected to an output terminal of the rf module 20, and the first connection socket 501 and the second connection socket 502 may be connected by a connection feeder 503.
In a specific example, a portion of the printed circuit board may be covered on the substrate 40, in other words, a portion of the surface of the substrate 40 is covered with the printed circuit board, and the connection feeder 503 may be an inter-board line of the printed circuit board.
In another specific example, the connecting feed 503 may be a radio frequency transmission line. In a specific example, the radio frequency transmission line is a Cable line, a wire clamp may be disposed on the base 40, the Cable line may be fixed on the surface of the base 40 through the wire clamp, and the surface of the base 40 facing the antenna module 10 may not be covered with metal, that is, the surface of the base 40 facing the antenna module 10 may be made of non-metal.
The Cable wire has a radio frequency wire fastening head (hereinafter referred to as a fastening head) at two ends thereof, and the fastening heads can be respectively fixed with the first connecting seat 501 and the second connecting seat 502, so as to connect the first connecting seat 501 and the second connecting seat 502.
In specific implementation, one or more of the following items can be selected according to actual needs and application scenarios: the material of the Cable wire, the dimensions (e.g., length and thickness) of the Cable wire, the material of the clip, and the dimensions of the clip, to optimize the performance of the antenna device 1.
Since the farther the Cable line is from the antenna module 10, the less the influence on the antenna radiation performance is, the Cable line is located far from the antenna module 10 without contacting the antenna module 10.
Compared with a scheme adopting an inter-board line, the scheme adopting the Cable line has the advantages of flexible layout, convenience in debugging and strong adaptability to different electromagnetic environments. In addition, the loss of the Cable line is lower than that of the inter-board line, so that the performance of the antenna is ensured.
In addition, the antenna is used as an open electromagnetic field device, and the working state and performance of the antenna are generally required to be customized and debugged in combination with the overall electromagnetic environment of the system. Compare in prior art's scheme of customization antenna, adopt Cable line as connecting the feeder in the scheme of this application embodiment, can debug antenna device 1 through material and the size of the Cable line of adjustment adoption, the material and the size of discount etc. be favorable to simplifying the process of design and debugging to can be applied to various electronic equipment, the flexibility is better.
In one non-limiting embodiment, the antenna arrangement 1 may comprise 2 antenna modules 10 to form a 2 × 2 Multiple-in Multiple-out (MIMO) antenna. In a specific implementation, the two antenna modules 10 may be used for both receiving electromagnetic waves and transmitting electromagnetic waves, or one of the antenna modules 10 may be used for receiving electromagnetic waves and the other antenna module 10 is used for transmitting electromagnetic waves.
It should be noted that, the specific positions of the antenna module 10, the first connection seat 501 and the second connection seat 502 are not limited in the embodiments of the present application, and may be adjusted or configured according to actual requirements, so as to optimize the performance of the antenna apparatus 1.
It should be emphasized again that compared to a scheme in which the matching network circuit is disposed outside the antenna module 10 (e.g., between the antenna module 10 and the first connection socket 501, or between the second connection socket 502 and the radio frequency module 20), the scheme of the embodiment of the present application integrates the matching network circuit on the surface of the substrate in the antenna module 10, and such a scheme does not require the matching network circuit to occupy the size of the antenna apparatus separately, thereby facilitating a reduction in the size of the antenna apparatus 10.
Referring to fig. 5, fig. 5 is a diagram illustrating a test result of Return Loss (Return Loss) of an antenna apparatus according to an embodiment of the present application. In fig. 5, the abscissa of the curve is frequency in GHz and the ordinate is return loss in dB. The return loss is an index which can be used for representing the performance of the antenna, and when the return loss is less than-6 dB, the performance of the antenna device can be determined to be better, and the communication requirement can be met.
As shown in fig. 5, in the antenna device in the embodiment of the present application, the return loss in the 840 to 980MHz frequency band and the 1670 to 2780mhz frequency band is less than-6 dB, and therefore, the working frequency band of the antenna module in the embodiment of the present application may be 840 to 980MHz and 1670 to 2780MHz.
The skilled person can understand that the high frequency band is usually 2.3 to 2.4 GHz and 2.5 to 2.7 GHz, the medium frequency band is usually 1.71 to 2.2ghz, and the low frequency band is usually 0.69 to 0.96ghz, so the antenna device provided by the embodiment of the present application is suitable for the low frequency band, and also suitable for the medium frequency band and the high frequency band.
Therefore, the antenna provided by the application can meet the requirements of multiple frequency bands. By the above, the antenna device in the embodiment of the application has a simple structure, the antenna module is loaded by using lumped components and distributed parameters, the excellent characteristics of miniaturization and multiple frequency bands can be obtained, meanwhile, the flexible configuration of the antenna device can be realized by combining the Cable line and the connecting seat, the antenna device is suitable for multiple wireless communication systems, and the research and development cost is effectively reduced.
The embodiment of the application further provides an electronic device, which may include the above antenna apparatus, and the electronic device may be a terminal, for example, a mobile phone, a computer, a tablet computer, a wearable device, an internet of things device, and the like, or a network-side device, for example, a base station, a relay, and the like, but is not limited thereto.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.
The "plurality" appearing in the embodiments of the present application means two or more. The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application. Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present disclosure, and it is intended that the scope of the present disclosure be defined by the appended claims.
While the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present disclosure, and it is intended that the scope of the present disclosure be defined by the appended claims.
Claims (9)
1. An antenna module, comprising:
a substrate;
an antenna stub;
an output end;
one end of the matching network circuit is connected with the antenna branch knot, and the other end of the matching network circuit is connected with the output end;
wherein at least a portion of the matching network circuit and the antenna stub are disposed on a surface of the substrate;
in a use state, the antenna module is mounted on a base body, the substrate comprises a first surface and a second surface which are opposite, the second surface is used for facing the base body, and the matching network circuit is arranged on the first surface;
the antenna branch is a dipole antenna, and the dipole antenna comprises two identical branch sections which are in mirror symmetry;
the output ends are arranged on the second surface, the other end of the matching network circuit is connected with the output ends through second metal through holes, the number of the output ends is 2, one of the output ends is used for grounding, the other output end is used for connecting a feed point, and the second metal through holes correspond to the output ends one to one;
the matching network circuit comprises a plurality of matching pads, lumped elements are arranged between the matching pads, the matching pads are used for reserving positions for the lumped elements so as to add the lumped elements in a debugging process, the matching pads are divided into a first pad group and a second pad group, the first pad group and the second pad group are in mirror symmetry, the first pad group corresponds to one branch in the dipole antenna, and the second pad group corresponds to the other branch in the dipole antenna;
the first bonding pad group is used for connecting one branch in the dipole antenna with one second metal through hole, and the second bonding pad group is used for connecting the other branch in the dipole antenna with the other second metal through hole.
2. The antenna module of claim 1, wherein the antenna stub comprises a first layer stub, a second layer stub, and a first metal via, wherein the first layer stub is disposed on the first surface, the second layer stub is disposed on the second surface, and the first layer stub and the second layer stub are connected through the first metal via.
3. The antenna module of claim 2, wherein the first and second metal vias are disposed on the substrate and extend through the first and second faces.
4. The antenna module of claim 1, wherein the matching network circuit further comprises one or more of: the matching network circuit is used for realizing impedance matching between the antenna branch and an external radio frequency module and/or expanding a working frequency band.
5. An antenna device, comprising:
the antenna module of any one of claims 1 to 4;
and the antenna module is connected with the radio frequency module through the output end.
6. The antenna device according to claim 5, further comprising: the base member, wherein, radio frequency module sets up in on the bottom plate, antenna module with the bottom plate sets up on the base member.
7. The antenna device of claim 5, further comprising: a connection assembly for connecting the antenna module with the radio frequency module.
8. The antenna device according to claim 7, wherein the connection assembly comprises a connection feed, the connection feed being a radio frequency transmission line.
9. An electronic device, characterized in that it comprises an antenna device according to any of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785128.8A CN114843783B (en) | 2022-07-06 | 2022-07-06 | Antenna module, antenna device and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785128.8A CN114843783B (en) | 2022-07-06 | 2022-07-06 | Antenna module, antenna device and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114843783A CN114843783A (en) | 2022-08-02 |
| CN114843783B true CN114843783B (en) | 2022-10-25 |
Family
ID=82574674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210785128.8A Active CN114843783B (en) | 2022-07-06 | 2022-07-06 | Antenna module, antenna device and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114843783B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004194089A (en) * | 2002-12-12 | 2004-07-08 | Murata Mfg Co Ltd | Double-resonant antenna device |
| CN105227198A (en) * | 2014-06-20 | 2016-01-06 | 展讯通信（上海）有限公司 | A kind of antenna system and mobile terminal |
| CN105870618A (en) * | 2016-05-13 | 2016-08-17 | 电子科技大学 | 433 MHz planar inverted-F antenna without matching of lumped element |
| CN112838371A (en) * | 2019-11-22 | 2021-05-25 | 中兴通讯股份有限公司 | Antenna multiplexing system and terminal |
| CN114628892A (en) * | 2022-04-07 | 2022-06-14 | 展讯通信（上海）有限公司 | PCB antenna and electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071902B (en) * | 2006-05-10 | 2011-12-28 | 中兴通讯股份有限公司 | Antenna device of monitoring unit for monitoring system |
| US7855697B2 (en) * | 2007-08-13 | 2010-12-21 | Corning Cable Systems, Llc | Antenna systems for passive RFID tags |
| US8525745B2 (en) * | 2010-10-25 | 2013-09-03 | Sensor Systems, Inc. | Fast, digital frequency tuning, winglet dipole antenna system |
| JP5937826B2 (en) * | 2012-01-13 | 2016-06-22 | 富士通コンポーネント株式会社 | Wireless module |
| CN212648490U (en) * | 2020-07-27 | 2021-03-02 | 深圳数联天下智能科技有限公司 | Dual-band antenna and IOT equipment |
| EP4089836A4 (en) * | 2020-11-12 | 2023-04-19 | Guangzhou Shiyuan Electronics Co., Ltd. | Antenna assembly and electronic device |
| CN112787091B (en) * | 2020-12-30 | 2022-10-11 | 北京微芯区块链与边缘计算研究院 | Antenna circuit based on pi-type distributed matching sub-circuit |
-
2022
- 2022-07-06 CN CN202210785128.8A patent/CN114843783B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004194089A (en) * | 2002-12-12 | 2004-07-08 | Murata Mfg Co Ltd | Double-resonant antenna device |
| CN105227198A (en) * | 2014-06-20 | 2016-01-06 | 展讯通信（上海）有限公司 | A kind of antenna system and mobile terminal |
| CN105870618A (en) * | 2016-05-13 | 2016-08-17 | 电子科技大学 | 433 MHz planar inverted-F antenna without matching of lumped element |
| CN112838371A (en) * | 2019-11-22 | 2021-05-25 | 中兴通讯股份有限公司 | Antenna multiplexing system and terminal |
| CN114628892A (en) * | 2022-04-07 | 2022-06-14 | 展讯通信（上海）有限公司 | PCB antenna and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114843783A (en) | 2022-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108832267B (en) | Electronic device | |
| CN111193110B (en) | Antenna device and electronic apparatus | |
| JP6374971B2 (en) | Antenna unit and terminal | |
| US6556812B1 (en) | Antenna coupler and arrangement for coupling a radio telecommunication device to external apparatuses | |
| CN109672019B (en) | Terminal MIMO antenna device and method for realizing antenna signal transmission | |
| US7126547B2 (en) | Antenna module and electronic apparatus having the same | |
| EP1710861A1 (en) | Antenna Arrangement | |
| US10355758B2 (en) | Multi-band antennas and MIMO antenna arrays for electronic device | |
| KR101700744B1 (en) | Built-in antenna for portable terminal | |
| US20110309985A1 (en) | Wideband printed circuit board-printed antenna for radio frequency front end circuit | |
| CN113224503B (en) | Antenna and terminal equipment | |
| CN106450752B (en) | MIMO antenna for realizing high isolation of smart phone | |
| CN110235308A (en) | A kind of wideband MIMO antenna system for electronic equipment | |
| CN105375108A (en) | Mobile terminal with MIMO (Multiple-Input Multiple-Output) antenna | |
| US6188364B1 (en) | Matched antenna device and a portable radio communication device including a matched antenna device | |
| CN108400427B (en) | Antenna system | |
| WO2023124646A1 (en) | Antenna assembly and electronic device | |
| CN103943942A (en) | Antenna and portable device having the same | |
| CN108075220A (en) | Terminal antenna component and mobile phone | |
| CN114843783B (en) | Antenna module, antenna device and terminal | |
| CN115150533B (en) | Cloth control ball | |
| CN115458911A (en) | Antenna device and electronic apparatus | |
| US8305276B2 (en) | Testing circuit board | |
| CN113422204A (en) | Antenna device and electronic apparatus | |
| CN112928470A (en) | Antenna assembly and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |