CN107359401B - Antenna circuit, radiation generating method and device - Google Patents
Antenna circuit, radiation generating method and device Download PDFInfo
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- CN107359401B CN107359401B CN201710517757.1A CN201710517757A CN107359401B CN 107359401 B CN107359401 B CN 107359401B CN 201710517757 A CN201710517757 A CN 201710517757A CN 107359401 B CN107359401 B CN 107359401B
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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Abstract
The disclosure relates to an antenna circuit, a radiation generating method and a device. The antenna circuit includes: a feed point for inputting the signal; the first loop is used for receiving a first path of signal of the signals and generating medium-high frequency radiation according to the first path of signal; a second loop for receiving a second signal of the signals and generating low-frequency radiation according to the second signal; wherein the feeding points are electrically connected with the first loop and the second loop, respectively. According to the technical scheme, the two loops of circuits are arranged, so that two paths of radiation are generated, the efficiency of low-frequency radiation is enhanced together, and the low-frequency communication performance is improved.
Description
Technical Field
The present disclosure relates to the field of electronics, and more particularly, to an antenna circuit, a radiation generating method, and a radiation generating apparatus.
Background
At present, with the rapid development of intelligent terminals and mobile communication technologies, intelligent terminals have more and more functions, and meanwhile, the communication systems of the intelligent terminals are more and more, and the requirements on the communication capacity are more and more strict.
Disclosure of Invention
The embodiment of the disclosure provides an antenna circuit, a radiation generation method and a radiation generation device. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided an antenna circuit, including:
a feed point for inputting the signal;
the first loop is used for receiving a first path of signal of the signals and generating medium-high frequency radiation according to the first path of signal;
a second loop for receiving a second signal of the signals and generating low-frequency radiation according to the second signal;
wherein the feeding points are electrically connected with the first loop and the second loop, respectively.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: two circuits are arranged, so that two paths of radiation are generated, the efficiency of low-frequency radiation is enhanced together, and the low-frequency communication performance is improved.
In one embodiment, the first loop comprises:
a first portion of a metal frame for transmitting the first signal;
the medium-high frequency branch node is used for generating the medium-high frequency radiation according to the first path of signal;
a first echo point for receiving and outputting the first path of signal;
the first part is electrically connected with the middle-high frequency branch node, and the first return ground is electrically connected with the middle-high frequency branch node.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the first loop is specifically introduced, thereby realizing medium-high frequency radiation.
In one embodiment, the second circuit comprises:
the second part of the metal frame is used for transmitting the second path of signals;
a second return point for receiving and flowing out the second signal;
wherein the second portion is electrically connected to the second ground return point.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the second loop is specifically described to achieve low frequency radiation.
In one embodiment, the medium-high frequency stub is an inverted F antenna stub.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: therefore, the first loop is a circuit of the inverted-F antenna structure, and the second loop is also a loop of the inverted-F antenna structure, so that the double-nested inverted-F antenna structure is realized, and the low-frequency radiation efficiency of the antenna circuit is enhanced together.
In one embodiment, the antenna circuit further comprises:
a metal dome for electrically connecting the metal bezel with an electrically connectable device, the electrically connectable device comprising at least: the feed point, the medium-high frequency radiation and the second return point.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the electrical connection is realized through the metal elastic sheet, and the smoothness of signal transmission is ensured.
In one embodiment, the first playback point comprises:
an inductance for changing the frequency of the low frequency radiation to a first low frequency band;
a first ground for changing the frequency of the low frequency radiation to a second low frequency band;
a switch for switching the inductor and the first ground;
the input end of the change-over switch is electrically connected with the output end of the middle-high frequency branch knot, and the inductor and the first ground are respectively electrically connected with the two output ends of the change-over switch.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the adjustment of multiple low frequency bands is realized, and better communication signals are provided.
In one embodiment, the first low frequency band is a GSM850 band; the second low frequency band is the GSM900 band.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the band number is specifically introduced.
In one embodiment, the antenna circuit further comprises:
a monopole high-frequency stub for generating high-frequency radiation by the signal;
and the monopole high-frequency branch is electrically connected with the metal frame.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the generation process of high-frequency radiation is introduced to ensure the performance of high-frequency communication.
In one embodiment, the antenna circuit further comprises:
a coupled intermediate frequency branch for generating intermediate frequency radiation from a signal, said coupled intermediate frequency branch comprising:
the first coupling sub-branch is used for receiving the signal and sending the signal in the form of electromagnetic waves;
the second coupling sub-branch is used for receiving the signal sent in the form of electromagnetic waves and generating the intermediate frequency radiation according to the signal sent in the form of electromagnetic waves;
the first coupling sub-branch is a coupling sub-branch in the monopole high-frequency branch.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the coupling generation process of intermediate frequency radiation is introduced to enhance the performance of intermediate frequency communication.
In one embodiment, the second coupling sub-branch comprises:
a third portion of the metal bezel, a third playback location, and a fourth playback location;
wherein the third portion is electrically connected to the third return point and the fourth return point, respectively, to form the second coupling sub-branch.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: how the coupling is achieved is described.
In one embodiment, the frequency of the high-frequency radiation is within the frequency band of 2300 + 2400MHz or 2500 + 2700 MHz;
the frequency of the medium-high frequency radiation is within the 1710-2170MHz frequency band;
the frequency of the intermediate frequency radiation is within the 1710-2170MHz frequency band.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the frequency bands of the respective radiation are introduced.
According to a second aspect of embodiments of the present disclosure, there is provided a radiation generating method including:
receiving a signal for radiation;
dividing the signal into two paths, namely a first path of signal and a second path of signal;
generating medium-high frequency radiation of a first path according to the first path of signals;
and generating low-frequency radiation of the second path according to the second path of signal.
According to a third aspect of embodiments of the present disclosure, there is provided a radiation generating apparatus including:
a receiving module for receiving a signal for radiation;
the dividing module is used for dividing the signals into two paths, namely a first path of signals and a second path of signals;
the first generation module is used for generating medium-high frequency radiation of the first path according to the first path of signals;
and the second generation module is used for generating the low-frequency radiation of the second path according to the second path of signal.
According to a fourth aspect of embodiments of the present disclosure, there is provided a radiation generating apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving a signal for radiation;
dividing the signal into two paths, namely a first path of signal and a second path of signal;
generating medium-high frequency radiation of a first path according to the first path of signals;
and generating low-frequency radiation of the second path according to the second path of signal.
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 present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a block diagram illustrating an antenna circuit according to an example embodiment.
Fig. 2 is a block diagram illustrating an antenna circuit according to an example embodiment.
Fig. 3 is a block diagram illustrating an antenna circuit according to an example embodiment.
Fig. 4 is a block diagram illustrating a metal dome according to an example embodiment.
FIG. 5 is a block diagram illustrating a first callback point according to an example embodiment.
Fig. 6 is a block diagram illustrating an antenna circuit according to an example embodiment.
Fig. 7 is a block diagram illustrating an antenna circuit according to an example embodiment.
Fig. 8 is a block diagram illustrating an antenna circuit according to an example embodiment.
FIG. 9 is a flow chart illustrating a radiation generation method according to an exemplary embodiment.
FIG. 10 is a block diagram illustrating a radiation generating device according to an exemplary embodiment.
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.
In the intelligent terminal, the research and development of the antenna directly determine the communication capacity of the intelligent terminal, the transmitting performance and the receiving performance of the intelligent terminal are influenced, meanwhile, the antenna is also relevant to the appearance of the intelligent terminal, and the quality of the antenna design even determines the sale performance of the intelligent terminal in the market. At present, many intelligent terminals all possess waterproof function, and the clearance of antenna has been compressed in the addition of waterproof function, and the loss of antenna radiation has also been brought in the addition of waterproof plastic.
In the related art, most of antenna circuits generating low-frequency radiation adopt a single-F antenna structure, but the effect is not satisfactory.
Fig. 1 is a block diagram illustrating an antenna circuit applied to a smart terminal according to an exemplary embodiment, where the antenna circuit of the present embodiment may be used as a circuit of a communication antenna of the smart terminal. As shown in fig. 1, the antenna circuit includes:
a feeding point 10 for an input signal;
a first loop 20 for receiving a first signal of the signal and generating medium-high frequency radiation according to the first signal;
a second loop 30 for receiving a second signal of the signals and generating low frequency radiation according to the second signal;
wherein the feeding point 10 is electrically connected to the first and second loops 20 and 30, respectively.
In this embodiment, the feeding point 10 is used to transmit the signal generated by the smart terminal to the antenna circuit. The first loop 20 and the second loop 30 form a double nested configuration.
In this embodiment, the antenna circuit is provided with two loops of circuits, so that two paths of radiation are generated, the efficiency of low-frequency radiation is enhanced together, and the low-frequency communication performance is improved.
In one embodiment, as shown in fig. 2, the connection portion between the feeding point and the metal frame in fig. 2 is a circuit pattern wire, and the first loop 20 includes:
a first portion 201 of the metal bezel 40 for transmitting a first signal;
a middle-high frequency branch node 202 for generating middle-high frequency radiation according to the first path of signal;
a first back-end point 203 for receiving and outputting a first signal;
the first portion 201 is electrically connected to the middle-high frequency branch 202, and the first back-ground point 203 is electrically connected to the middle-high frequency branch 202.
In one embodiment, as shown in FIG. 3, the second circuit 30 includes:
a second portion 301 of the metal bezel 40 for transmitting a second signal;
a second loopback point 302 for receiving and streaming a second signal;
wherein the second portion 301 is electrically connected to the second ground return point 302.
In this embodiment, the second loop 30 is correspondingly added by adding the second loop point 302, i.e. one more, thereby achieving the effect of jointly enhancing the efficiency of the low-frequency radiation.
In one embodiment, the medium-high frequency stub 202 is an inverted F antenna stub.
Thus, the first loop 20 is a loop of an inverted-F antenna, and the second loop 30 is equivalent to an inverted-F antenna loop, which together form a dual nested inverted-F structure of the antenna circuit.
Thus, the antenna circuit designed by the embodiment has excellent communication capacity in the middle-high frequency 820MHz-960MHz, 1710-2170MHz and 2300-2700MHz frequency bands, and the peak radiation efficiency of the scheme of the multi-ground double-nested inverted F antenna structure provided by the embodiment is improved by 16% in the low frequency 820MHz-960MHz compared with the scheme of the single-ground single-inverted F antenna structure, so that the antenna circuit has excellent low-frequency communication performance.
In one embodiment, as shown in fig. 4, the antenna circuit further includes:
a metal dome 50 for electrically connecting the metal bezel 40 with an electrically connectable device, the electrically connectable device comprising at least: feed point 10, medium-high frequency radiation 202, second loop point 302. Here, the metal elastic sheet 50 may be connected to the metal frame at one side and connected to the pattern wire at the other side, and here, the pattern wire may also be disposed on the metal frame.
In one embodiment, as shown in FIG. 5, the first waypoint 203 comprises:
an inductance 2031 for changing the frequency of the low frequency radiation to a first low frequency band;
a first ground 2032 for changing the frequency of the low frequency radiation to a second low frequency band;
a switch 2033 for switching the inductance and the first ground;
the input end of the switch 2033 is electrically connected to the output end of the middle-high frequency branch 202, and the inductor 2031 and the first ground 2032 are electrically connected to two output ends of the switch 3023, respectively.
Typically, the inductor 2031 is also connected in series to ground.
In one embodiment, the first low frequency band is a Global System for mobile communications (GSM) 850 band; the second low frequency band is the GSM900 band.
In one embodiment, as shown in fig. 6, the antenna circuit further includes:
a monopole high-frequency branch 60 for generating high-frequency radiation by a signal;
wherein the monopole high-frequency branch 60 is electrically connected with the metal frame 40.
In the present embodiment, the monopole high-frequency branch 50 is used as a third loop, and the third loop and the first loop 20 are a multi-ground dual-inverted F antenna structure.
In one embodiment, as shown in fig. 7, the antenna circuit further includes:
a coupled intermediate frequency branch 70 for generating intermediate frequency radiation from a signal, the coupled intermediate frequency branch 70 comprising:
a first coupling sub-branch 701 for receiving a signal and transmitting the signal in the form of an electromagnetic wave;
a second coupling sub-branch 702 for receiving the signal transmitted in the form of electromagnetic wave and generating intermediate frequency radiation according to the signal transmitted in the form of electromagnetic wave;
the first coupling sub-branch 702 is a coupling sub-branch 601 in the monopole high-frequency branch 60.
Here, no other components are required to block between the first coupling sub-branch 702 and the second coupling sub-branch 702.
In one embodiment, as shown in FIG. 8, second coupling sub-branch 702 comprises:
a third portion of the metal bezel 7021, a third playback location 7022, and a fourth playback location 7023;
wherein the third portion 7021 is electrically connected to a third return location 7022 and a fourth return location 7023, respectively, to form the second coupling sub-branch 702.
Here, the third return point 7022 and the fourth return point 7023 are electrically connected to the third portion 7021 of the metal frame to form a second coupling sub-branch 702, and signal radiation at the 1710-2170MHz frequency band is realized by coupling the first coupling sub-branch 701 at the feeding point with the second coupling sub-branch 702 of the right frame; the whole coupled structure can be equivalent to a coupled circuit, wherein the energy of the first coupling sub-branch 701 is coupled to the second coupling sub-branch 702 through electromagnetic waves, and then the electromagnetic waves are emitted into the free space through the second coupling sub-branch 702. The coupling energy can be changed by adjusting the width and the length of the gap between the two coupling sub-branches.
In this embodiment, the second ground return 302, the third ground return 7022 and the fourth ground return 7023 are all grounds for flowing out corresponding signals to form a circuit loop.
In one embodiment, the frequency of the high-frequency radiation is within the 2300-2400MHz or 2500-2700MHz frequency band;
the frequency of the medium-high frequency radiation is within the 1710-2170MHz frequency band;
the frequency of the coupled intermediate frequency radiation is within the 1710-2170MHz band.
The first portion 201, the second portion 301, and the third portion 7021 proposed in the present embodiment are all circuit patterns provided on the metal bezel 40.
In this embodiment, correspond low frequency radiation, because intelligent terminal has waterproof function, certain loss has been brought to intelligent terminal's low frequency to its used plastic of waterproof, consequently, proposed two nested inversion F antenna structure and be used for promoting antenna circuit's low frequency performance. After the signal at the feeding point 20 is fed to the metal frame 40, the first signal passes through the first portion 201 and the middle-high frequency branch 202 in sequence and returns to the first return point 203 through two loops, the first return point 203 selects to switch on the first ground 2032 or the inductor 2031 through the switch 2033 in advance, so that the state switching of the low-frequency GSM850/GSM900 is realized, and the second signal passes through the second portion 301 and returns to the second return point 302, so that the antenna circuit of the multi-ground dual-nested inverted F antenna structure is formed. The main radiation of the low-frequency 2G signals of the mobile phone is generated by the lower metal frame 40, and after a new return point is added, a new antenna circuit with a double-inverted-F antenna is formed in view of the structure of the antenna circuit, and the low frequency of the antenna circuit is equivalent to the superposition of two inverted-F antennas, so that the radiation efficiency of the low frequency of the antenna is enhanced together. The peak efficiency of the low frequency of the antenna is improved by about 16 percent compared with the single IFA antenna, and the improvement is obvious.
For medium-high frequency radiation, the main radiating structure of the antenna circuit is a multi-ground dual IFA structure: the signal is fed into the antenna circuit through the metal elastic piece 50 and is divided into three paths, the third path of signal excites the high-frequency monopole branch knot 60, the fourth path of signal directly excites the medium-high frequency branch knot 202 on the upper frame and is grounded back to the first grounding point 203, and the fifth path of signal directly excites the coupling medium-frequency branch knot 70 on the upper frame. The feed point 10 extends out of a monopole high-frequency branch to realize radiation at frequency sections of 2300 MHz, 2400MHz and 2500 MHz respectively. Meanwhile, the middle-high frequency branch 202 of the intelligent terminal can also realize the radiation of 1710-2170MHz frequency band of the antenna circuit, and the coupling middle-frequency branch 70 can also realize the efficient radiation of 1710-2170MHz middle-high frequency.
In this embodiment, the pattern (pattern) wire of the antenna circuit is a metal structure manufactured by a Laser Direct Structuring (LDS) process, and is connected to the metal frame through an elastic sheet.
In this embodiment, the device of the antenna circuit is not necessarily directly connected to the metal frame, but is connected to the metal dome through a pattern wire.
Fig. 9 is a flow chart illustrating a radiation generating method according to an exemplary embodiment, as shown in fig. 9, the radiation generating method is used in a radiation generating apparatus, and includes the following steps 1101 and 1104:
in step 1101, a signal for radiation is received.
In step 1102, the signal is divided into two paths, i.e., a first path of signal and a second path of signal.
In step 1103, the first channel of medium and high frequency radiation is generated according to the first channel of signal.
In step 1104, a second path of low frequency radiation is generated based on the second path of signal.
In this embodiment, the antenna circuit is provided with two loops of circuits, so that two paths of radiation are generated, the efficiency of low-frequency radiation is enhanced together, and the low-frequency communication performance is improved.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 10 is a block diagram illustrating a radiation-producing apparatus that may be implemented as part or all of an electronic device in software, hardware, or a combination of both, according to an example embodiment. As shown in fig. 10, the radiation generating apparatus includes:
a receiving module 1201 for receiving a signal for radiation.
The dividing module 1202 is configured to divide the signal into two paths, which are a first path of signal and a second path of signal respectively.
The first generating module 1203 is configured to generate medium-high frequency radiation of the first channel according to the first channel signal.
And a second generating module 1203, configured to generate a second path of low-frequency radiation according to the second path of signal.
In this embodiment, the antenna circuit is provided with two loops of circuits, so that two paths of radiation are generated, the efficiency of low-frequency radiation is enhanced together, and the low-frequency communication performance is improved.
According to a third aspect of embodiments of the present disclosure, there is provided a radiation generating apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving a signal for radiation;
dividing the signal into two paths, namely a first path of signal and a second path of signal;
generating medium-high frequency radiation of a first path according to the first path of signals;
and generating low-frequency radiation of the second path according to the second path of signal.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed 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 (6)
1. An antenna circuit, comprising:
a feed point for an input signal;
the first loop is used for receiving a first path of signal of the signals and generating medium-high frequency radiation according to the first path of signal;
a second loop for receiving a second signal of the signals and generating low-frequency radiation according to the second signal; the return point of the first path of signal is different from the return point of the second path of signal;
wherein the feed points are electrically connected with the first loop and the second loop, respectively;
the antenna circuit further includes:
a monopole high-frequency stub for generating high-frequency radiation by the signal;
the monopole high-frequency branch is electrically connected with the metal frame;
the antenna circuit further includes:
a coupled intermediate frequency branch for generating intermediate frequency radiation from a signal, said coupled intermediate frequency branch comprising:
the first coupling sub-branch is used for receiving the signal and sending the signal in the form of electromagnetic waves;
the second coupling sub-branch is used for receiving the signal sent in the form of electromagnetic waves and generating the intermediate frequency radiation according to the signal sent in the form of electromagnetic waves;
the first coupling sub-branch is a coupling sub-branch in the monopole high-frequency branch;
the first circuit includes:
a first portion of a metal frame for transmitting the first signal;
the medium-high frequency branch node is used for generating the medium-high frequency radiation according to the first path of signal;
a first echo point for receiving and outputting the first path of signal; wherein the first portion is electrically connected to the medium-high frequency branch node, and the first return ground is electrically connected to the medium-high frequency branch node;
the second circuit includes:
the second part of the metal frame is used for transmitting the second path of signals;
a second return point for receiving and flowing out the second signal; wherein the second portion is electrically connected to the second return point;
the middle-high frequency branch is an inverted F antenna branch.
2. The antenna circuit of claim 1, further comprising:
a metal dome for electrically connecting the metal bezel with an electrically connectable device, the electrically connectable device comprising at least: the feed point, the medium-high frequency branch node and the second return point.
3. The antenna circuit of claim 1, wherein the first loop back point comprises:
an inductance for changing the frequency of the low frequency radiation to a first low frequency band;
a first ground for changing the frequency of the low frequency radiation to a second low frequency band;
a switch for switching the inductor and the first ground;
the input end of the change-over switch is electrically connected with the output end of the middle-high frequency branch knot, and the inductor and the first ground are respectively electrically connected with the two output ends of the change-over switch.
4. The antenna circuit of claim 3, wherein the first low frequency band is a Global System for Mobile communications (GSM) 850 frequency band; the second low frequency band is the GSM900 band.
5. The antenna circuit of claim 1, wherein the second coupling sub-branch comprises:
a third portion of the metal bezel, a third playback location, and a fourth playback location;
wherein the third portion is electrically connected to the third return point and the fourth return point, respectively, to form the second coupling sub-branch.
6. The antenna circuit as claimed in claim 1, wherein the frequency of the high frequency radiation is within 2300-2400MHz band or 2500-2700MHz band;
the frequency of the medium-high frequency radiation is within the 1710-2170MHz frequency band;
the frequency of the coupled intermediate frequency radiation is within the 1710-2170MHz frequency band.
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| TWI686996B (en) * | 2018-09-19 | 2020-03-01 | 啓碁科技股份有限公司 | Antenna structure |
| CN111864349B (en) * | 2019-04-26 | 2021-12-28 | 北京小米移动软件有限公司 | Mobile terminal and antenna radiation method thereof |
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| CN105870596A (en) * | 2016-04-13 | 2016-08-17 | 珠海市魅族科技有限公司 | Antenna and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870596A (en) * | 2016-04-13 | 2016-08-17 | 珠海市魅族科技有限公司 | Antenna and mobile terminal |
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| Publication number | Publication date |
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| CN107359401A (en) | 2017-11-17 |
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