CN107768806B - Antenna assembly - Google Patents
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- CN107768806B CN107768806B CN201610671895.0A CN201610671895A CN107768806B CN 107768806 B CN107768806 B CN 107768806B CN 201610671895 A CN201610671895 A CN 201610671895A CN 107768806 B CN107768806 B CN 107768806B
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
- H01Q1/244—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas extendable from a housing along a given path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Engineering & Computer Science (AREA)
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Abstract
The present disclosure relates to an antenna assembly, and belongs to wireless communication technology. The antenna assembly includes: the first metal sheet, the second metal sheet and the third metal sheet are positioned in a rear shell of the terminal, the first metal sheet, the second metal sheet and the third metal sheet are respectively connected to a metal frame of the terminal, and the metal frame is provided with a broken seam; the circuit comprises a feed point, a capacitor, a single-pole multi-throw switch and a grounding point, wherein the feed point is positioned on a mainboard, the feed point is connected with one end of the capacitor, the other end of the capacitor is connected with a first metal sheet, the grounding point is connected with one end of the single-pole multi-throw switch, each other end of the single-pole multi-throw switch is connected with a second metal sheet, and the grounding point is connected with a third metal sheet. The antenna assembly can increase the capacitance to reduce the wiring length, solves the problem that the antenna assembly occupies a larger space due to more wiring, and achieves the effect of saving space.
Description
Technical Field
The present disclosure relates to wireless communication technologies, and in particular, to an antenna assembly.
Background
The terminal is provided with a main antenna and an auxiliary antenna, and the performance of the main antenna is enhanced through the auxiliary antenna.
In the related art, a secondary antenna of an LTE (Long Term Evolution) diversity antenna is disposed in a terminal having a metal frame, and since a frequency range to be covered by the LTE diversity antenna is large, the LTE diversity antenna has many traces, which results in that the LTE diversity antenna occupies a large space of the terminal.
Disclosure of Invention
To solve the problems in the related art, the present disclosure provides an antenna assembly.
According to a first aspect of embodiments of the present disclosure, there is provided an antenna assembly comprising:
the terminal comprises a first metal sheet, a second metal sheet and a third metal sheet which are positioned in a rear shell of the terminal, wherein the first metal sheet, the second metal sheet and the third metal sheet are respectively connected to a metal frame of the terminal, and the metal frame is provided with a broken seam;
the single-pole multi-throw switch comprises a feed point, a capacitor, a single-pole multi-throw switch and a second grounding point, wherein the feed point is positioned on a mainboard, the feed point is connected with one end of the capacitor, the other end of the capacitor is connected with the first metal sheet, the grounding point is connected with one end of the single-pole multi-throw switch, each other end of the single-pole multi-throw switch is connected with the second metal sheet, and the grounding point is connected with the third metal sheet.
Optionally, the first other end of the single-pole multi-throw switch is connected to the second metal sheet through a wire, the second other end of the single-pole multi-throw switch is connected to one end of an inductor, and the other end of the inductor is connected to the second metal sheet.
Optionally, the first other end of the single-pole multi-throw switch is connected to the second metal sheet through a wire, and a gap between one end of the single-pole multi-throw switch and the first other end is closed,
a path between the first metal sheet and the break forms a radiating portion of an IFA (Inverted F Antenna), and a path between the first metal sheet and the second metal sheet forms a ground portion of the IFA;
a Loop (Loop) antenna is formed by a path between the first metal sheet and the second metal sheet;
the length of the path between the first metal sheet and the second metal sheet is smaller than the length of the path between the first metal sheet and the third metal sheet.
Optionally, the second other end of the single-pole multi-throw switch is connected to the second metal sheet through an inductor, and the middle between one end of the single-pole multi-throw switch and the second other end is closed,
a path between said first metal sheet and said break forms a radiating portion of an IFA, and a path between said first metal sheet and said second metal sheet forms a ground portion of said IFA;
the Loop antenna is formed by a path between the first metal sheet and the second metal sheet.
Optionally, one end of the single-pole multi-throw switch is disconnected from any other end,
a path between said first metal sheet and said break forms a radiating portion of an IFA, and a path between said first metal sheet and said third metal sheet forms a ground portion of said IFA;
and a Loop antenna is formed by a path between the first metal sheet and the third metal sheet.
Optionally, the size of the capacitor is in a negative correlation with the resonant frequency of the IFA antenna;
the size of the capacitor is in a negative correlation relation with the resonant frequency of the Loop antenna.
Optionally, the length of the path between the first metal sheet and the broken seam is in a negative correlation with the resonant frequency of the IFA antenna.
Optionally, a path between the first metal sheet and the second metal sheet is in a negative correlation with the resonant frequency of the Loop antenna.
Optionally, a path between the first metal sheet and the third metal sheet is in a negative correlation with the resonant frequency of the Loop antenna.
Optionally, the length of a passage between the first metal sheet and the broken seam is smaller than a preset threshold.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
because the resonant frequency of antenna module all is the negative correlation with the size of inductance and electric capacity, and the size of inductance is positive correlation with the length of walking the line, consequently when the resonant frequency range of antenna module's demand is fixed, can increase electric capacity in antenna module and reduce line length to solved because of the antenna module walks the problem that the line more leads to occupying great space, reached the effect of saving space.
The single-pole multi-throw switch is connected with the second metal sheet through a conducting wire, or the single-pole multi-throw switch is connected with the second metal sheet through an inductor, or the single-pole multi-throw switch is disconnected, so that the number of available antenna assemblies and the resonant frequency of the antenna assemblies are adjusted according to the state of the single-pole multi-throw switch, and the implementation mode of the antenna assemblies is expanded.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram illustrating an antenna assembly according to an exemplary embodiment.
Fig. 2A is a schematic diagram illustrating an antenna assembly according to another exemplary embodiment.
Fig. 2B is a schematic diagram of the various paths in the first antenna assembly.
Fig. 2C is a schematic diagram of the various paths in the second antenna assembly.
Fig. 3 is a schematic diagram of a return loss curve shown in terms of an antenna assembly.
Fig. 4 is a line graph illustrating the efficiency of an antenna assembly according to the antenna assembly.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic diagram illustrating an antenna assembly according to an exemplary embodiment, the antenna assembly being used in a terminal, as shown in fig. 1, the antenna assembly including:
a first metal sheet 102, a second metal sheet 103 and a third metal sheet 104 located in the rear case 101 of the terminal, wherein the first metal sheet 102, the second metal sheet 103 and the third metal sheet 104 are respectively connected to a metal frame 105 of the terminal, and the metal frame 105 is provided with a breaking seam 106.
A feeding point 108, a capacitor 109, a single-pole multi-throw switch 110 and a grounding point 111 which are positioned on the mainboard 107, wherein the feeding point 108 is connected with one end of the capacitor 109, the other end of the capacitor 109 is connected with the first metal sheet 102, the grounding point 111 is connected with one end of the single-pole multi-throw switch 110, each other end of the single-pole multi-throw switch 110 is connected with the second metal sheet 103, and the grounding point 111 is connected with the third metal sheet 104.
In fig. 1, the surface on which the first metal piece 102, the second metal piece 103, and the third metal piece 104 are provided faces the surface on which the feeding point 108, the capacitor 109, the single-pole multi-throw switch 110, and the ground point 111 are provided. At this time, a connection point of the first metal piece 102 to the capacitor 109 is indicated by a connection line located at the upper side in the side view, a connection point of the second metal piece 103 to the other end of the single-pole multi-throw switch 110 is indicated by a connection line located at the middle in the side view, and a connection point of the third metal piece 104 to the ground point 111 is indicated by a connection line located at the lower side in the side view.
Optionally, the first metal plate 102 may be connected to the capacitor 109 through a metal spring, the second metal plate 103 may be connected to the other end of the single-pole multi-throw switch 110 through a metal spring, and the third metal plate 104 may be connected to the ground 111 through a metal spring.
In summary, in the antenna assembly provided by the present disclosure, since the resonant frequency of the antenna assembly is in a negative correlation with the sizes of the inductor and the capacitor, and the size of the inductor is in a positive correlation with the length of the trace, when the resonant frequency range of the antenna assembly is fixed, the capacitor can be added to the antenna assembly to reduce the trace length, thereby solving the problem of occupying a larger space due to more traces of the antenna assembly, and achieving the effect of saving space.
Fig. 2A is a schematic diagram illustrating an antenna assembly for use in a terminal according to another exemplary embodiment, as shown in fig. 2A, the antenna assembly comprising:
the terminal comprises a first metal sheet 202, a second metal sheet 203 and a third metal sheet 204 which are positioned in a rear shell 201 of the terminal, wherein the first metal sheet 202, the second metal sheet 203 and the third metal sheet 204 are respectively connected to a metal frame 205 of the terminal, and the metal frame 205 is provided with a broken seam 206.
In this embodiment, the terminal includes front and rear cases 201, and the front and rear cases 201 are joined by a metal bezel 205. The metal frame 205 is provided with at least one break 206, and each break 206 is filled with an insulating material.
The first metal sheet 202 is connected to the metal frame 205 through a connection line, the second metal sheet 203 is connected to the metal frame 205 through a connection line, and the third metal sheet 204 is connected to the metal frame 205 through a connection line. Wherein, when the rear case 201 is made of a non-metal material, the connection line may be a wire etched on the rear case 201; when the rear case 201 is made of a metal material, the first metal sheet 202 is conducted with the metal frame 205 without a connecting wire; the second metal sheet 203 is electrically connected to the metal frame 205, and a connection line is not required, which is not limited in this embodiment.
The antenna assembly further comprises a feeding point 208 located on the main board 207, a capacitor 209, a single-pole-multiple-throw switch 210, and a grounding point 211, the feeding point 208 being connected to one end of the capacitor 209, the other end of the capacitor 209 being connected to the first metal plate 202, the grounding point 211 being connected to one end of the single-pole-multiple-throw switch 210, each other end of the single-pole-multiple-throw switch 210 being connected to the second metal plate 203, the grounding point 211 being connected to the third metal plate 204.
In fig. 2A, the surface on which the first metal plate 202, the second metal plate 203, and the third metal plate 204 are provided is opposite to the surface on which the feeding point 208, the capacitor 209, the single-pole multi-throw switch 210, and the ground point 211 are provided. At this time, a connection point of the first metal piece 202 to the capacitor 209 is represented by a connection line located at the upper side in the side view, a connection point of the second metal piece 203 to the other end of the single-pole multi-throw switch 220 is represented by a connection line located at the middle in the side view, and a connection point of the third metal piece 204 to the ground point 211 is represented by a connection line located at the lower side in the side view.
Optionally, the first metal plate 202 may be connected to the capacitor 209 through a metal spring, the second metal plate 203 may be connected to the other end of the single-pole multi-throw switch 220 through a metal spring, and the third metal plate 204 may be connected to the ground 211 through a metal spring.
The main board 207 is generally a circuit board in the terminal, and a plurality of devices are disposed in the circuit board. For example, a CPU (Central Processing Unit), a memory, a power amplifier, and the like are disposed in the circuit board, and the present embodiment does not limit the devices in the motherboard 207.
One end of the feeding point 208 is connected to a signal source output port in the motherboard for transmitting signals. The other end of the feeding point 208 is connected to a capacitor 209, and the other end of the capacitor 209 is connected to the first metal plate 202.
According to the formula
Therefore, when the resonant frequency of the antenna assembly is fixed, the capacitor C can be added to the antenna assembly to reduce the length of the wiring, so that the problem that the occupied space of the antenna assembly is large due to the fact that the wiring is more is solved, and the effect of saving the space is achieved.
The single-pole multi-throw switch 210 comprises a plurality of other ends, and the number of available antenna assemblies and the resonant frequency of the antenna assemblies can be adjusted by adjusting the opening and closing of the single-pole multi-throw switch 210, so that the implementation mode of the antenna assemblies is expanded. The present embodiment is described by taking an example in which the single-pole-multi-throw switch 210 includes two other terminals. At this time, the first other end of the single-pole multi-throw switch 210 is connected to the second metal plate 203 through a wire, the second other end of the single-pole multi-throw switch 210 is connected to one end of an inductor, and the other end of the inductor is connected to the second metal plate 203.
In the first implementation manner, the other end of the single-pole multi-throw switch 210 is connected to the second metal sheet 203 through a wire, and the end of the single-pole multi-throw switch 210 is closed to the other end of the first metal sheet, the path between the first metal sheet 202 and the broken seam 206 forms the radiation part of the IFA, and the path between the first metal sheet 202 and the second metal sheet 203 forms the grounding part of the IFA; a Loop antenna is formed by a path between the first metal sheet 202 and the second metal sheet 203; the length of the via between the first metal sheet 202 and the second metal sheet 203 is smaller than the length of the via between the first metal sheet 202 and the third metal sheet 204.
Since the antenna element selects the metal plate with shorter trace to be grounded, please refer to fig. 2B, the solid line 212 with the bold represents the path between the first metal plate 202 and the broken seam 206; the path between the first metal sheet 202 and the second metal sheet 203 is indicated by a bold solid line 213; the via between the first metal sheet 202 and the second metal sheet 203 is indicated by a bold dashed line 214.
Wherein the vias between the first metal sheet 202 and the break 206 are used for radiating signals, the vias between the first metal sheet 202 and the second metal sheet 203 are used for short-circuiting signals, and the vias between the first metal sheet 202 and the break 206 and the vias between the first metal sheet 202 and the second metal sheet 203 form an IFA. For IFA, current flows from the feed point 208 and then radiates out of the break 206 through the capacitor 209.
The size of the capacitor 209 is inversely related to the resonant frequency of the IFA antenna. That is, the larger the value of the capacitor 209, the lower the resonance frequency of the IFA, and the smaller the value of the capacitor 209, the higher the resonance frequency of the IFA. Typically, the value of the capacitor 209 ranges from 0.2pF to 2 pF.
The length of the path between the first metal sheet 202 and the break 206 is less than a predetermined threshold. This is because the level of the resonance frequency of the IFA is inversely related to the length of the path between the first metal piece 202 and the gap 206, that is, the longer the length of the path between the first metal piece 202 and the gap 206, the lower the resonance frequency of the IFA, and the shorter the length of the path between the first metal piece 202 and the gap 206, the higher the resonance frequency of the IFA. When the length of the path between the first metal sheet 202 and the break 206 is too long, the IFA resonant frequency is not affected. That is, when the break 206 is located on the left side, the first metal sheet 202 is located on the left side; when the break 206 is located on the right side, the first metal sheet 202 is located on the right side.
For the Loop antenna, a current flows from the feeding point 208, passes through the capacitor 209, and flows out of the second metal plate 203 to form a Loop. At this time, the length of the via between the first metal piece 202 and the second metal piece 203 is in a negative correlation with the resonant frequency of the Loop antenna. That is, the longer the length of the path between the first metal piece 202 and the second metal piece 203, the lower the resonance frequency of the Loop antenna, and the shorter the length of the path between the first metal piece 202 and the second metal piece 203, the higher the resonance frequency of the Loop antenna.
When the path between the first metal sheet 202 and the second metal sheet 203 is a Loop antenna, the size of the capacitor 209 is in a negative correlation with the resonant frequency of the Loop antenna, that is, the larger the value of the capacitor 209 is, the lower the resonant frequency of the Loop antenna is, the smaller the value of the capacitor 209 is, and the higher the resonant frequency of the Loop antenna is.
In a second implementation manner, the second other end of the single-pole multi-throw switch 210 is connected to the second metal plate 203 through an inductor, and the middle between one end of the single-pole multi-throw switch 210 and the second other end is closed, a path between the first metal plate 202 and the broken seam 206 forms a radiation part of the IFA, and a path between the first metal plate 202 and the second metal plate 203 forms a grounding part of the IFA; the vias between the first metal sheet 202 and the second metal sheet 203 form a Loop antenna. Typically, the inductance has a value in the range of 1nH to 20 nH.
The description of the capacitor 209 in the IFA antenna and the length of the path between the first metal plate 202 and the gap 206 are described in the above first implementation, and are not repeated here.
The details of the capacitor 209 in the Loop antenna and the length of the path between the first metal sheet 202 and the second metal sheet 203 are described in the above first implementation, and are not described herein again.
In the first implementation manner and the second implementation manner, the resonant frequency of the antenna assembly is adjusted according to the state of the single-pole multi-throw switch, so that the frequency band of the antenna assembly is between 800 and 960 MHz. For example, in the first implementation manner, the frequency band of the Loop antenna is in the range of 880-960 MHz; in a second implementation manner, when the inductance is 15nH, the frequency range of the Loop antenna is 800-880 MHz.
In a third implementation, one end of the single-pole, multi-throw switch 210 is disconnected from either other end, the path between the first metal sheet 202 and the break 206 forms the radiating portion of the IFA, and the path between the first metal sheet 202 and the third metal sheet 204 forms the ground portion of the IFA; the vias between the first metal sheet 202 and the third metal sheet 204 form a Loop antenna.
Since one end of the single-pole-multi-throw switch 210 is disconnected from any other end, the grounding point 211 and the second metal plate 203 are in an open circuit state, and the antenna assembly is grounded through a path between the grounding point 211 and the third metal plate 204.
Referring to fig. 2C, a solid bold line 215 represents a path between the first metal sheet 202 and the seam 206, and a solid bold line 216 represents a path between the first metal sheet 202 and the third metal sheet 204; the via between the first metal sheet 202 and the third metal sheet 204 is indicated by a bold dashed line 217.
Wherein the vias between the first metal sheet 202 and the break 206 are used for radiating signals, the vias between the first metal sheet 202 and the third metal sheet 204 are used for short-circuiting signals, and the vias between the first metal sheet 202 and the break 206 and the vias between the first metal sheet 202 and the third metal sheet 204 form an IFA. For IFA, current flows from the feed point 208 and then radiates out of the break 206 through the capacitor 209.
The description of the capacitor 209 and the length of the path between the first metal sheet 202 and the break 206 in the IFA is described in the above first implementation, and is not repeated here.
For the Loop antenna, current flows from the feeding point 208, passes through the capacitor 209, and flows out of the third metal plate 204 to form a Loop. At this time, the length of the via between the first metal piece 202 and the third metal piece 204 is inversely related to the resonant frequency of the Loop antenna. That is, the longer the length of the path between the first metal piece 202 and the third metal piece 204 is, the lower the resonance frequency of the Loop antenna is, and the shorter the length of the path between the first metal piece 202 and the third metal piece 204 is, the higher the resonance frequency of the Loop antenna is.
In a third implementation, the frequency band of the Loop antenna is in the range of 650-800 MHz.
In summary, according to the antenna provided by the present disclosure, since the resonant frequency of the antenna assembly and the sizes of the inductor and the capacitor are in a negative correlation relationship, and the size of the inductor and the length of the trace are in a positive correlation relationship, when the resonant frequency range of the antenna assembly is fixed, the capacitor can be added to the antenna assembly to reduce the trace length, thereby solving the problem of occupying a larger space due to more traces of the antenna assembly, and achieving the effect of saving space.
The single-pole multi-throw switch is connected with the second metal sheet through a conducting wire, or the single-pole multi-throw switch is connected with the second metal sheet through an inductor, or the single-pole multi-throw switch is disconnected, so that the number of available antenna assemblies and the resonant frequency of the antenna assemblies are adjusted according to the state of the single-pole multi-throw switch, and the implementation mode of the antenna assemblies is expanded.
Fig. 3 is a schematic diagram showing a return loss curve according to an antenna assembly when the single pole, multiple throw switch 210 is in an open circuit state. It can be seen from the figure that, in the return loss curve of the antenna assembly, the frequency corresponding to the point a is 728MHz, the frequency corresponding to the point B is 859MHz, the frequency corresponding to the point C is 960MHz, the frequency corresponding to the point D is 1805MHz, the frequency corresponding to the point E is 2170MHz, the frequency corresponding to the point F is 2300MHz, the frequency corresponding to the point G is 2400MHz, the frequency corresponding to the point H is 2500MHz, and the frequency corresponding to the point I is 2699MHz, so that the antenna assembly can meet the bandwidth requirement of the 650 plus 2700MHz frequency band.
Fig. 4 is a line graph showing the efficiency of the antenna assembly according to the antenna assembly, in which a bold solid line in fig. 4 is a line graph showing the efficiency of the antenna assembly when the first other end of the single-pole multi-throw switch 210 is connected to the second metal plate 203 by a wire, and an bold broken line is a line graph showing the efficiency of the antenna assembly when the second other end of the single-pole multi-throw switch 210 is connected to the second metal plate 203 by an inductor, wherein the size of the inductor is 16nH, and the bold solid line is a line graph showing the efficiency of the antenna assembly when one end of the single-pole multi-throw switch 210 is disconnected from either one of the other ends.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. An antenna assembly, characterized in that the antenna assembly comprises:
the terminal comprises a first metal sheet, a second metal sheet and a third metal sheet which are positioned in a rear shell of the terminal, wherein the first metal sheet, the second metal sheet and the third metal sheet are respectively connected to a metal frame of the terminal, and the metal frame is provided with a broken seam;
the single-pole multi-throw switch comprises a feed point, a capacitor, a single-pole multi-throw switch and a grounding point, wherein the feed point is positioned on a mainboard, the feed point is connected with one end of the capacitor, the other end of the capacitor is connected with the first metal sheet, the grounding point is connected with one end of the single-pole multi-throw switch, the first other end of the single-pole multi-throw switch is connected with the second metal sheet through a lead, the second other end of the single-pole multi-throw switch is connected with one end of an inductor, the other end of the inductor is connected with the second metal sheet, and the grounding point is connected with the third metal sheet.
2. The antenna assembly of claim 1, wherein a first other end of the single-pole-multiple-throw switch is connected to the second metal sheet by a wire, and wherein the single-pole-multiple-throw switch is closed between one end and the first other end,
a path between the first metal sheet and the break forms a radiating portion of an inverted-F antenna IFA, and a path between the first metal sheet and the second metal sheet forms a ground portion of the IFA;
a Loop antenna is formed by a passage between the first metal sheet and the second metal sheet;
the length of the path between the first metal sheet and the second metal sheet is smaller than the length of the path between the first metal sheet and the third metal sheet.
3. The antenna assembly of claim 1, wherein a second other terminal of the single-pole-multiple-throw switch is connected to the second metal sheet through an inductor, and wherein one terminal of the single-pole-multiple-throw switch is closed midway between the second other terminal and the single-pole-multiple-throw switch,
a path between said first metal sheet and said break forms a radiating portion of an IFA, and a path between said first metal sheet and said second metal sheet forms a ground portion of said IFA;
the Loop antenna is formed by a path between the first metal sheet and the second metal sheet.
4. The antenna assembly of claim 1, wherein one end of the single-pole-multiple-throw switch is open to either of the other ends,
a path between said first metal sheet and said break forms a radiating portion of an IFA, and a path between said first metal sheet and said third metal sheet forms a ground portion of said IFA;
and a Loop antenna is formed by a path between the first metal sheet and the third metal sheet.
5. The antenna assembly of any one of claims 2 to 4,
the size of the capacitor is in a negative correlation relation with the height of the resonant frequency of the IFA antenna;
the size of the capacitor is in a negative correlation relation with the resonant frequency of the Loop antenna.
6. The antenna assembly of any one of claims 2 to 4, wherein the length of the path between the first metal sheet and the break is inversely related to the level of the resonant frequency of the IFA antenna.
7. The antenna assembly of claim 2 or claim 3, wherein the path between the first metal sheet and the second metal sheet is inversely related to the level of the resonant frequency of the Loop antenna.
8. The antenna assembly of claim 4, wherein the path between the first metal sheet and the third metal sheet is inversely related to the height of the resonant frequency of the Loop antenna.
9. The antenna assembly of claim 1, wherein a length of a path between the first metal sheet and the break is less than a preset threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610671895.0A CN107768806B (en) | 2016-08-15 | 2016-08-15 | Antenna assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671895.0A CN107768806B (en) | 2016-08-15 | 2016-08-15 | Antenna assembly |
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| CN107768806A CN107768806A (en) | 2018-03-06 |
| CN107768806B true CN107768806B (en) | 2020-06-19 |
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| CN201610671895.0A Active CN107768806B (en) | 2016-08-15 | 2016-08-15 | Antenna assembly |
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