CN112072314A - Multi-frequency antenna and electronic equipment - Google Patents
Multi-frequency antenna and electronic equipment Download PDFInfo
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- CN112072314A CN112072314A CN202010929767.8A CN202010929767A CN112072314A CN 112072314 A CN112072314 A CN 112072314A CN 202010929767 A CN202010929767 A CN 202010929767A CN 112072314 A CN112072314 A CN 112072314A
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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
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a multi-frequency antenna and electronic equipment, wherein the multi-frequency antenna comprises a metal rear shell and a feeding device, the metal rear shell is provided with a metal rear cover plate and a metal surrounding frame surrounding the edge of the metal rear cover plate, the metal rear cover plate is provided with a plurality of resonance gaps, and the resonance gaps extend in the length direction parallel to the width direction of the metal rear cover plate and are all positioned in the metal surrounding frame; the feeding device is arranged on the inner side of the metal rear cover plate and feeds power to the plurality of resonance gaps. Through all seting up a plurality of resonance gaps on the metal back shroud to the resonance gap is located the metal and encloses the frame, because the resonance gap does not destroy the frame that the frame was enclosed to the metal, guarantees that the metal backshell has great structural strength. In addition, a plurality of resonance gaps can be fed through one feeding device, the use of the feeding device is reduced, the cost is reduced, and the space in the electronic equipment is also saved.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a multi-frequency antenna and electronic equipment.
Background
With the development of technology, electronic devices such as tablet computers are becoming thinner and lighter, and the strength of large-sized tablet computers becomes a difficult point in design. The strength of the body of the tablet computer can be effectively enhanced by the all-metal rear shell, so that the tablet computer can have the advantages of light weight, thinness and high strength.
However, the working frequency of the existing slot antenna is affected by the size, the requirements on the length and width of the slot antenna are strict, and on the one hand, in the layout of multiple antennas, the existing slot antenna often has the problems that the resonant slot damages the frame of the metal rear shell and affects the integrity of the frame and the structural strength of the metal rear shell; on the other hand, the conventional multi-frequency antenna usually adopts a plurality of feeding devices to feed a plurality of slots in a one-to-one correspondence manner, the plurality of feeding devices occupy a large internal space of the electronic device, and the cost of the feeding devices is high.
Disclosure of Invention
The primary objective of the present invention is to provide a multi-band antenna with a metal back cover having high structural strength and low cost.
Another object of the present invention is to provide an electronic device using the above multi-frequency antenna.
As a first aspect, a multifrequency antenna is provided, including metal backshell and feeder, the metal backshell has the metal back shroud and encloses the frame with enclosing the metal of locating the metal back shroud edge, a plurality of resonance gaps have been seted up on the metal back shroud, a plurality of resonance gaps are parallel to metal back shroud width direction with length direction separately and extend the setting, feeder locates the metal back shroud inboard and do a plurality of resonance gap feeds.
Optionally, the plurality of resonant slots are opened at one end of the metal back cover plate along the first direction.
Optionally, the plurality of resonant slots are opened at one end of the metal back cover plate along a second direction perpendicular to the first direction.
Optionally, at least two resonance gaps among the plurality of resonance gaps are arranged along the width direction of the metal rear cover plate;
the feeding device is provided with at least two coupling branches, one end of each coupling branch is connected together, the coupling branches extend along the length direction of the metal rear cover plate, and the at least two coupling branches are in one-to-one correspondence to feed at least two resonance gaps which are distributed along the width direction of the metal rear cover plate.
Optionally, the plurality of resonant slots are arranged in a plurality of rows along the length direction of the metal back cover plate, and each row has at least one resonant slot;
the coupling branch knot strides and is located resonance gap width direction's both ends and be the resonance gap feed, when a plurality of resonance gaps constitute multirow gap and the resonance gap of different rows overlaps or partially overlaps in the position of metal back shroud width direction, the coupling branch knot still crosses a resonance gap and feeds to another resonance gap to through the resonance gap feed of same coupling branch knot to same row.
Optionally, in the width direction of the metal back cover plate, one end of each of two adjacent resonance gaps, which is far away from each other, extends in the direction far away from the metal enclosure frame to form an expanded portion, another row of resonance gaps is arranged between the two adjacent expanded portions, and the length and the width of the resonance gap arranged between the expanded portions are smaller than those of the resonance gap arranged with the expanded portion.
Optionally, the resonant slot is filled with a non-metal material and forms a continuous decorative strip outside the metal back cover plate.
Optionally, one resonance gap close to two adjacent frames of the metal enclosure frame is bent and extends along the length direction of the metal rear cover plate to form a bent section; the sum of the widths of the resonance gaps which are arranged along the length direction of the metal rear cover plate and are positioned in the same row is smaller than the length of the bending section.
Optionally, the coupling branch includes a metal coupling element, and the metal coupling element abuts against the metal back cover plate and spans the resonance gap to feed the resonance gap in a coupling manner.
Optionally, at least two of the plurality of resonant slots have different operating frequency bands, and preferably, the plurality of resonant slots operate in different multiple frequency bands.
Optionally, a metal isolation rib is arranged between every two adjacent resonance gaps in the width direction of the metal back cover plate, and the metal isolation rib is formed on the inner side of the metal back cover plate and extends in the direction perpendicular to the inner plane of the metal back cover plate.
As a second aspect, the present invention relates to an electronic device, which includes a main board, wherein the main board is provided with a radio frequency circuit capable of generating a radio frequency current, and further includes at least the above multi-frequency antenna, and the feeding device is electrically connected to the radio frequency circuit.
The technical scheme provided by the invention has the beneficial effects that:
1. in the multi-frequency antenna provided by the invention, the plurality of resonance gaps are arranged on the metal rear cover plate and are positioned in the metal surrounding frame, namely the resonance gaps do not penetrate through the metal surrounding frame, and the metal rear shell is ensured to have higher structural strength because the resonance gaps do not damage the frame of the metal surrounding frame. In addition, a plurality of resonance gaps can be fed through one feeding device, the use of the feeding device is reduced, the cost is reduced, and the space in the electronic equipment is also saved.
2. In the multi-frequency antenna provided by the invention, the resonant slots can be arranged to have different lengths, and the frequency of current flowing through the coupling branches is changed, so that different resonant slots can resonate in different frequency band ranges.
3. In the multi-frequency antenna provided by the invention, a plurality of resonant slots can be arrayed in a plurality of rows along the length direction of the metal rear cover plate, and a plurality of rows are formed along the width direction of the metal rear cover plate, so that an array with a plurality of rows and a plurality of rows is formed, and the resonant slots in the same row are fed through the same coupling branch, so that the number of the coupling branches is reduced, the design of a feeding device in the metal rear shell is facilitated, and the weight of the multi-frequency antenna is also reduced.
4. In the multi-frequency antenna provided by the invention, the plurality of resonance gaps are arranged at one of the upper end and the lower end of the metal rear cover plate and are arranged at one of the left side and the right side, so that the integration of the metal rear shell of the multi-antenna in the same area is realized, and the structure of the multi-frequency antenna is more compact.
5. In the multi-frequency antenna provided by the invention, the resonance gap is filled with the non-metal material, and the non-metal material is connected to form the continuous decorative belt on the outer side of the metal rear cover plate, so that the metal rear cover plate is tidier and more attractive in appearance.
6. According to the electronic equipment, due to the adoption of the multi-frequency antenna, on the premise that the multi-antenna covering requirement is met, the metal rear shell has higher structural strength because the resonance gap does not penetrate through the frame; because the feeding device is adopted to feed the plurality of resonance gaps, the number of the feeding devices is reduced, the occupied area of the feeding devices can be reduced, the weight of the electronic equipment is reduced, and the cost is reduced. In addition, the resonance gap is filled with non-metal materials, a continuous decoration strip is formed on the rear side of the metal rear cover plate, and the electronic equipment has a neat appearance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below.
Fig. 1 is a schematic structural diagram of a multi-frequency antenna according to an embodiment of the present invention;
fig. 2 is a partial schematic view of the multi-frequency antenna shown in fig. 1 according to an embodiment of the present invention, which is used for magnifying the structure of the multi-frequency antenna for observation;
fig. 3 is a schematic structural diagram of a metal back shell in a multi-frequency antenna according to an embodiment of the present invention, which illustrates a structure of a resonant slot on the metal back shell.
Fig. 4 is a schematic structural diagram of a feeding device in a multi-frequency antenna according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an outer structure of a metal rear shell according to an embodiment of the present invention;
fig. 6 is a resonance simulation diagram of a multi-frequency antenna according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and are not used for limiting the sequence or interdependence relationship of the functions executed by the devices, modules or units.
Referring to fig. 1 to 4, as a first aspect, the present invention relates to a multi-frequency antenna, which includes a metal rear case 1000 and a feeding device 2 disposed inside the metal rear case 1000, and can be applied to an electronic device to solve the difficulties of the conventional electronic device that has many communication frequency bands and is difficult to design.
Among them, the electronic devices of the present invention include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., car navigation terminals), and the like, and fixed terminals such as digital televisions, desktop computers, and the like.
The metal back case 1000 includes a metal back cover plate 100 and a metal surrounding frame 200 surrounding the edge of the metal back cover plate 100, wherein the metal back cover plate 100 and the metal surrounding frame 200 are integrally formed by a sheet metal process. By adopting the all-metal rear case 1000, the electronic device has higher structural strength, and the design requirements of large size, lightness and thinness of the electronic device are met. The metal back cover plate 100 is provided with a resonant slot 1, and the resonant slot can be fed by a feeding device 2 to emit electromagnetic waves outwards.
It should be understood that the electronic device further has a main board, on which a radio frequency circuit capable of generating a radio frequency current is disposed, and the feeding device 2 is connected to the radio frequency circuit to feed power to the internal structure of the multi-frequency antenna through the radio frequency circuit, so that the multi-frequency antenna can be resonated to form a multi-frequency antenna covering a plurality of different frequency bands, thereby meeting the communication requirements with other external devices.
The communication frequency bands that can be covered by the multi-frequency antenna of the present invention include, but are not limited to, 2G frequency band, 3G frequency band, 4G frequency band, 5G (5th-Generation) frequency band, GPS frequency band and WiFi frequency band. The embodiment takes four different frequency bands of a GPS frequency band (1550MHz-1660MHz), a WiFi2.4G frequency band (2400MHz-2500MHz), a China Mobile FR1-N79 frequency band (4800MHz-4900MHz) and a WiFi5G frequency band (5150MHz-5850MHz) as examples to illustrate the structure of the multi-frequency antenna.
In this embodiment, the metal back cover plate 100 is provided with four resonant slots 11, 12, 13, and 14, which work in the four different frequency bands in a one-to-one correspondence. Optionally, the four resonant slots 11, 12, 13, and 14 are all disposed at one end of the metal back cover plate 100 along a first direction, and the four resonant slots are all located at one end of the metal back cover plate 100 along a second direction, where the first direction is perpendicular to the second direction, so that the plurality of resonant slots are concentrated in one area on one metal back cover plate 100, which facilitates design of the antenna. In the present embodiment, the first direction is a longitudinal direction of the metal back cover plate; the second direction is the width direction of the metal back cover plate.
Optionally, four resonant slots 11, 12, 13, and 14 are respectively arranged in a length direction parallel to the width direction of the metal back cover plate 100, with a space therebetween, and all four resonant slots are located in the metal enclosure frame 200. All resonance gaps are arranged in the metal enclosure frame 200, so that the structure of the metal enclosure frame 200 is not damaged, and the metal rear shell 1000 has high structural strength.
Optionally, a metal isolation rib 101 is disposed between two adjacent resonance gaps along the width direction of the metal back cover plate 100, and the metal isolation rib 101 is formed inside the metal back cover plate 100 and abuts against the metal enclosure frame 200, and extends along a direction perpendicular to the inner plane of the metal back cover plate 100. The metal isolation rib 101 is arranged at the joint of the resonance gap, so that the isolation of signals resonated out by different resonance gaps can be further realized, and the structural strength of the metal rear cover plate 100 is enhanced.
Alternatively, the four resonant slots 11, 12, 13, 14 are arranged on the metal back cover 100 in two rows along the length direction of the metal back cover 100 and in two rows along the width direction of the metal back cover 100, that is, each row has two resonant slots, and each column also has two resonant slots.
Preferably, the resonant slots of the present invention are arranged in a nested manner, for example, in a direction away from the upper end of the back cover plate, the operating frequency band of the resonant slots is higher and higher, so that the slots with shorter length and narrower width are surrounded by the slots with longer length, in other words, the resonant slots with lower frequency band and closer to the upper end of the metal back cover plate 100 are arranged in the same row, and the resonant slots with higher frequency band are arranged in the row farther from the upper end of the metal back cover plate 100.
For example, in the present embodiment, two resonance slots 11 and 12 operating in the GPS frequency band (1550MHz-1660MHz) and the WiFi2.4g frequency band (2400MHz-2500MHz) are disposed near the upper end edge of the metal back cover 100, and the ends of the two resonance slots that are far away from each other form widened parts 111 and 121, and two resonance slots 13 and 14 having higher operating frequencies, that is, two resonance wide parts 13 and 14 operating in the chinese mobile FR1-N79 frequency band (4800MHz-4900MHz) and the WiFi5G frequency band (5150MHz-5850MHz) are disposed between the two widened parts 111 and 121.
Therefore, the resonance gaps 1 between different frequency bands are nested, the high-frequency band resonance gap is nested between the widening parts of the low-frequency band resonance gap, the whole width of the resonance gap can be reduced, the occupied area of the antenna gap is reduced, the space of the metal rear cover plate 100 is reasonably utilized, and the structure of the antenna is more compact.
In other embodiments, the resonant slots may be opened at the lower end of the metal back cover plate 100. In addition, the resonance gaps may be provided in other numbers, for example, three, five, or more. When the number of the resonance slits is set to five or more, the resonance slits are arranged in at least two rows each having at least one resonance slit and at least two rows each also having at least one resonance slit.
The feeder 2 is provided with a, roughly Y-shaped, feeder having two coupling branches 21, one end of each of the two coupling branches 21 being connected together, and the other end of each coupling branch 21 being bridged across two resonant slots in a row for feeding the two resonant slots. Therefore, four resonance gaps are fed through one feeding device 2, and the frequency of the radio frequency current flowing through the coupling branches 21 can be adjusted, so that the resonance gaps work in corresponding frequency bands, namely, the resonance gaps work in four frequency bands such as a GPS frequency band (1550MHz-1660MHz), a WiFi2.4G frequency band (2400MHz-2500MHz), a China Mobile FR1-N79 frequency band (4800MHz-4900MHz) and a WiFi5G frequency band (5150MHz-5850 MHz). In this embodiment, each resonant slot 1 can control the resonant frequency band independently, the relationship of the resonant slot tuning frequency band is independent, the Y-shaped feeding device 2 is divided into two coupling branches 21, each coupling branch 21 can be connected in series with two resonant slots with different frequencies, so as to excite the resonance in four different frequency bands.
Correspondingly, when the number of the resonant slots is more than four, for example, five, the resonant slots may be arranged in three rows and two columns, and the two coupling branches 21 are used for feeding, that is, one coupling branch 21 feeds two resonant slots in one row, and the other coupling branch 21 feeds three resonant slots in the other row.
In other words, when the plurality of resonant slots are opposed to each other at the slot positions in the width direction of the metal back plate 100 where the metal back plate 100 forms a plurality of rows of slots, the coupling branches 21 also feed power to another resonant slot across one resonant slot to feed power to the resonant slot in the same row through the same coupling branch 21.
Optionally, the coupling branches 21 include a metal coupling member, which abuts against the metal back cover plate 100 in a manner of pressing, welding, locking, riveting, screwing or CNC (numerical control machining) to feed the resonant slot coupling.
Optionally, the resonant slot is filled with a non-metal material, and the non-metal material and the outer side surface of the metal back cover plate 100 form a continuous decoration band 102, so as to ensure the tidiness of the outer side surface of the metal back cover plate 100.
Optionally, one resonant slot close to two adjacent side frames of the metal enclosure frame 200 is further bent and extends along the length direction of the metal back cover plate 100 to form a bent section 112, and the length of the bent section 112 is greater than the sum of the widths of the resonant slots in the same row. The embodiment combined with nesting between the resonant slots can form a narrow decorative strip 102 on the outer side of the metal back cover plate 100, so that the neat and beautiful appearance is ensured.
Referring to fig. 6, fig. 6 is a resonance simulation diagram of the multi-frequency antenna of the present invention. As can be seen from the point 1 and the point 2, the resonance frequency of the resonance gap is between 1550MHz and 1660MHz, and the resonance gap belongs to the working frequency band of a GPS antenna, so that the GPS communication requirement of electronic equipment is met; as can be seen from the points 3 and 4, the resonance frequency of the resonance gap is between 2351MHz and 2518MHz, and belongs to the working frequency band of the WiFi2.4G antenna; please refer to point 5 and point 7, the resonant frequency of the resonant slot is 4513MHz-5968MHz, which can meet the coverage requirement of FR1-N79 frequency band (4800MHz-4900MHz) in china; referring to point 5 and point 7, the resonant frequency of the resonant slot is between 4513MHz and 5968MHz, which partially meets the communication frequency band requirement of WiFi5G frequency band (5150MHz-5850 MHz).
As a second aspect, the present invention further relates to an electronic device, which includes a main board and at least one multi-frequency antenna, wherein the feeding device 2 is electrically connected to the rf current on the main board and feeds the multiple resonant slots of the multi-frequency antenna. Since the resonance gap of the multi-frequency antenna does not pass through the metal enclosure frame 200, the metal enclosure frame 200 has a complete structure, and the structural strength of the metal rear case 1000 is ensured. Because one feed device 2 is adopted to feed all the resonance gaps in one multi-frequency antenna, the use of the feed device 2 is reduced, the internal space of the electronic equipment can be saved, the weight is reduced, and the cost is reduced. And the non-metallic material is filled in the resonant slot and the continuous decorative strip 102 is connected to the outer side of the metal back cover plate 100, so that the neatness of the metal back cover plate 100 is high.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions of the present invention are mutually replaced to form the technical solution.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (11)
1. The utility model provides a multifrequency antenna, its characterized in that, includes metal backshell and feed arrangement, the metal backshell has the metal back shroud and encloses the frame with enclosing the metal of locating metal back shroud edge, a plurality of resonance gaps have been seted up on the metal back shroud, a plurality of resonance gaps extend the setting with length direction parallel to metal back shroud width direction separately, feed arrangement locates the metal back shroud inboard and does a plurality of resonance gap feeds.
2. The multi-band antenna of claim 1, wherein the plurality of resonant slots are open at one end of the metal back cover plate along the first direction.
3. The multi-band antenna of claim 2, wherein the plurality of resonant slots are disposed at one end of the metal back cover along a second direction, the second direction being perpendicular to the first direction.
4. The multi-frequency antenna of claim 1, wherein at least two of the plurality of resonant slots are arranged along a width of the metallic back cover;
the feeding device is provided with at least two coupling branches, one end of each coupling branch is connected together, the coupling branches extend along the length direction of the metal rear cover plate, and the at least two coupling branches are in one-to-one correspondence to feed at least two resonance gaps which are distributed along the width direction of the metal rear cover plate.
5. The multi-frequency antenna of claim 4, wherein the plurality of resonant slots are arranged in a plurality of rows along a length of the metallic back cover, each row having at least one of the resonant slots;
the coupling branch is arranged at two ends in the width direction of the resonant slot in a spanning mode and feeds the resonant slot, when a plurality of resonant slots form a plurality of rows of slots and the positions of the resonant slots in different rows are overlapped or partially overlapped in the width direction of the metal rear cover plate, the coupling branch crosses one resonant slot to feed the other resonant slot, so that the same row of resonant slots are fed through the same coupling branch.
6. The multiband antenna of claim 5, wherein, in a width direction of the metal back cover, two adjacent resonance slots are formed with an expanded portion at respective ends thereof away from each other, and another row of resonance slots is provided between the two adjacent expanded portions, and the resonance slots provided between the expanded portions are smaller in length and width than the resonance slots provided with the expanded portions.
7. The multi-frequency antenna of claim 5, wherein the resonant slots are filled with a non-metallic material and form a continuous decorative band outside the metallic back cover plate.
8. The multi-frequency antenna of claim 6, wherein a resonant slot adjacent to two adjacent frames of the metal enclosure is bent and extends along a length direction of the metal back cover to form a bent section;
the sum of the widths of the resonance gaps which are arranged along the length direction of the metal rear cover plate and are positioned in the same row is smaller than the length of the bending section.
9. The multi-frequency antenna of claim 4, wherein the coupling branches comprise a metal coupling member abutting against the metal back cover plate and straddling the resonant slot to feed the resonant slot.
10. The multi-band antenna of claim 1, wherein a metal isolation rib is disposed between two adjacent resonance slots along a width direction of the metal back cover, and the metal isolation rib is formed on an inner side of the metal back cover and extends along a direction perpendicular to a plane of the inner side of the metal back cover.
11. An electronic device comprising a main board, wherein the main board is provided with a radio frequency circuit capable of generating a radio frequency current, and further comprising at least one multi-frequency antenna according to any one of claims 1 to 10, wherein the feeding device is electrically connected to the radio frequency circuit.
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| CN202010929767.8A CN112072314B (en) | 2020-09-07 | 2020-09-07 | Multi-frequency antenna and electronic equipment |
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| CN202010929767.8A CN112072314B (en) | 2020-09-07 | 2020-09-07 | Multi-frequency antenna and electronic equipment |
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| CN112072314A true CN112072314A (en) | 2020-12-11 |
| CN112072314B CN112072314B (en) | 2023-06-06 |
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