CN109378569B - Mobile terminal device - Google Patents
Mobile terminal device Download PDFInfo
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- CN109378569B CN109378569B CN201811485320.5A CN201811485320A CN109378569B CN 109378569 B CN109378569 B CN 109378569B CN 201811485320 A CN201811485320 A CN 201811485320A CN 109378569 B CN109378569 B CN 109378569B
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- radiating arm
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- dual
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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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
- H01Q1/36—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
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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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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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses mobile terminal equipment which comprises a shell, a circuit board, a first dual-frequency antenna and a second dual-frequency antenna, wherein the first dual-frequency antenna is provided with a first low-frequency radiating arm and a first high-frequency radiating arm, the second dual-frequency antenna is provided with a second low-frequency radiating arm and a second high-frequency radiating arm, the second low-frequency radiating arm is arranged opposite to the first radiating arm, and at least part of the first low-frequency radiating arm and at least part of the second low-frequency radiating arm are arranged in an orthogonal mode; the electromagnetic waves radiated or received by at least parts of the first low-frequency radiating arm and the second radiating arm are orthogonally arranged, so that the mutual influence of the electromagnetic waves radiated or received by the first low-frequency radiating arm and the second low-frequency radiating arm can be reduced, the isolation of the first dual-frequency antenna and the second dual-frequency antenna can be improved, and the mutual influence between the first dual-frequency antenna and the second dual-frequency antenna can be reduced.
Description
Technical Field
The invention relates to the field of communication equipment, in particular to mobile terminal equipment.
Background
The mobile terminal equipment comprises products provided with antennas, such as an intelligent camera, intelligent wearable equipment, intelligent home equipment and the like, the products are more and more popular with users due to the fact that the products can perform data interaction with other equipment to bring convenience to daily life and work of people, and the mobile terminal equipment with the dual-frequency antenna is wider in application range and more popular with users due to the fact that the mobile terminal equipment supports multiple frequency bands (such as 2.4GHz and 5 GHz).
However, due to considerations such as portability or limited space, the size of the mobile terminal device is more and more required by the user, so that the space inside the mobile terminal device is smaller and smaller, and thus, the antenna is disposed in a narrow space, which brings trouble to the designer.
Disclosure of Invention
The main object of the present invention is to provide a mobile terminal device, which aims to reduce the mutual interference between dual-frequency antennas.
In order to achieve the above object, a mobile terminal device according to the present invention includes:
a housing;
a circuit board;
a first dual-band antenna provided in the housing, the first dual-band antenna having a first grounding point and a first feeding point connected to the circuit board, a first low-frequency radiating arm connected to one of the first grounding point and the first feeding point, and a first high-frequency radiating arm connected to the other of the first grounding point and the first feeding point; and the number of the first and second groups,
a second dual band antenna provided in the case and arranged side by side with the first dual band antenna, the second dual band antenna having a second grounding point and a second feeding point connected to the circuit board, a second low frequency radiation arm connected to one of the second grounding point and the second feeding point, and a second high frequency radiation arm connected to the other of the second grounding point and the second feeding point;
the second low-frequency radiating arm is arranged opposite to the first radiating arm, and at least part of the first low-frequency radiating arm and part of the second low-frequency radiating arm are arranged orthogonally.
Preferably, the center-to-center distance between the first dual-band antenna and the second dual-band antenna is D, and D is less than or equal to the half wavelength of radiation of the first low-frequency radiation arm or the second low-frequency radiation arm.
Preferably, the end section of the second low-frequency radiating arm extends towards the end section of the first low-frequency radiating arm, and the two are orthogonally arranged.
Preferably, the mobile terminal device further includes a circuit sub-board electrically connected to the circuit board, the circuit sub-board and the first dual-band antenna and the second dual-band antenna are located on the same side of the circuit board, and the circuit sub-board is disposed adjacent to the end section of the first low-frequency radiating arm and the end section of the second low-frequency radiating arm;
the tail section of the first low-frequency radiation arm is opposite to and parallel to the long edge of the circuit auxiliary plate;
the tail section of the second low-frequency radiating arm is opposite to and parallel to the short side of the circuit auxiliary board.
Preferably, the second high-frequency radiating arm and the first high-frequency radiating arm are arranged oppositely and symmetrically.
Preferably, the first low-frequency radiating arm is connected to the first grounding point, and the first high-frequency radiating arm is connected to the first feeding point;
the second low-frequency radiating arm is connected with the second grounding point, and the second high-frequency radiating arm is connected with the second feeding point.
Preferably, the first dual-band antenna further comprises a first balun portion, and the first balun portion connects the first grounding point and the first feeding point;
the second dual-band antenna further comprises a second balun portion connecting the second ground point and the second feed point arrangement.
Preferably, the first balun portion and the second balun portion are symmetrically arranged
Preferably, the first balun portion comprises:
one end of the first balun ground connection section is connected with the first ground point, and the other end of the first balun ground connection section extends towards the side where the first feeding point is located and then extends towards the position close to the first feeding point;
one end of the first balun feed connecting section extends to the other end of the first balun ground connecting section, and the other end of the first balun feed connecting section extends to the side close to the first ground point firstly and then extends to the first feed point to be connected with the first feed point;
the second balun section includes:
a second balun ground connection section, one end of which is connected to the second ground point, and the other end of which extends toward the second feeding point and then extends toward the second feeding point;
and one end of the second balun feed connecting section extends from the other end of the second balun ground connecting section, and the other end of the second balun feed connecting section extends towards the side close to the second ground point and then extends towards the second feed point to be connected with the second feed point.
Preferably, the mobile terminal device comprises an intelligent wearable device, an intelligent camera or an intelligent household device.
In the technical scheme of the invention, the second low-frequency radiating arm is arranged opposite to the first radiating arm, and at least part of the first low-frequency radiating arm and the second low-frequency radiating arm are orthogonally arranged, so that electromagnetic waves radiated or received by at least part of the first low-frequency radiating arm and the second radiating arm are orthogonally arranged, and therefore, the mutual influence of the electromagnetic waves radiated or received by the first low-frequency radiating arm and the second low-frequency radiating arm can be reduced, and the isolation of the first dual-frequency antenna and the second dual-frequency antenna can be improved, and the mutual influence between the first dual-frequency antenna and the second dual-frequency antenna can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic plan view of a partial structure of an embodiment of a mobile terminal device provided in the present invention;
FIG. 2 is a perspective view of a portion of the structure of FIG. 1;
fig. 3 is a diagram of the antenna effect of the mobile terminal device provided in fig. 1;
fig. 4 is a return loss plot for a conventional design.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a mobile terminal device, which is an electronic device with a plurality of dual-frequency antennas, and specifically, the mobile terminal device specifically includes but is not limited to an intelligent wearable device, an intelligent camera or an intelligent home device, and the like. Based on consideration of factors such as portability or space limitation, a user has more and more strict requirements on the size of the mobile terminal device, so that the space inside the mobile terminal device is smaller and smaller, and thus, a plurality of dual-frequency antennas are arranged in a narrow space, the distance between the dual-frequency antennas is smaller and smaller, and once the distance between the dual-frequency antennas is smaller to a certain extent, for example, when the wavelength of half electromagnetic waves is long, the interference between the dual-frequency antennas is particularly obvious.
Generally, a dual-band antenna includes a low band and a high band, which are both bands conforming to corresponding standards, for example, in this embodiment, the dual-band antenna is a WIFI (Wireless Fidelity antenna broadband) antenna, the low band is 2.4GHz, the high band is 5GHz, it is obvious that a wavelength with a large frequency is smaller, and a wavelength with a small frequency is larger, so that it can be seen that the low band is more susceptible than the high band for a plurality of dual-band antennas.
In view of the above, the structure and layout of the dual-band antenna of the present invention are improved, fig. 1 to 2 are diagrams illustrating an embodiment of a mobile terminal device provided by the present invention, in this embodiment, the mobile terminal device is a smart camera, and referring to fig. 1 to 2, the mobile terminal device 100 includes a housing 101, a circuit board 1, a first dual-band antenna 2a, and a second dual-band antenna 2 b.
The first dual-band antenna 2a is disposed in the housing 101, and the first dual-band antenna 2a has a first grounding point 21a and a first feeding point 22a connected to the circuit board 1, a first low-frequency radiating arm 23a connected to one of the first grounding point 21a and the first feeding point 22a, and a first high-frequency radiating arm 24a connected to the other of the first grounding point 21a and the first feeding point 22 a.
The second dual band antenna 2b is disposed in the housing 101 and is arranged side by side with the first dual band antenna 2a, and the second dual band antenna 2b has a second grounding point 21b and a second feeding point 22b connected to the circuit board 1, a second low frequency radiating arm 23b connected to one of the second grounding point 21b and the second feeding point 22b, and a second high frequency radiating arm 24b connected to the other of the second grounding point 21b and the second feeding point 22 b.
The second low-frequency radiating arm 23b is disposed opposite to the first radiating arm, and at least a portion of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b are disposed orthogonally.
In the technical solution of the present invention, the second low-frequency radiating arm 23b is disposed opposite to the first radiating arm, and at least a portion of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b are disposed orthogonally, so that at least a portion of electromagnetic waves radiated or received by the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b are disposed orthogonally, thereby reducing mutual influence of the electromagnetic waves radiated or received by the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b, improving isolation of the first dual-frequency antenna 2a and the second dual-frequency antenna 2b, and reducing mutual interference between the two antennas.
In this embodiment, the housing 101 is a metal housing 101, and for this purpose, but not limited to, a slot is disposed on the metal housing 101 for the dual-band antenna to transmit or receive electromagnetic waves.
The center distance between the first dual band antenna 2a and the second dual band antenna 2b is D, and since the first dual band antenna 2a and the second dual band antenna 2b are configured in a special-shaped structure, the center is difficult to be determined, specifically, in the present embodiment, the distance between the first grounding point 21a and the second grounding point 21b may be the center distance D, and the distance between the first feeding point 22a and the second feeding point 22b may also be the center distance D. D is less than or equal to the half wavelength of radiation of the first low-frequency radiating arm 23a or the second low-frequency radiating arm 23b, and as can be seen from the foregoing description, when the distance between the dual-frequency antennas is less than or equal to the half wavelength of radiation, the mutual influence between the dual-frequency antennas is particularly significant, and in this case, the effect and effect of the technical scheme provided by the present invention are particularly significant.
It should be noted that: the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b are at least partially orthogonally disposed, and may be entirely orthogonally disposed between the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b, in which case one of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b completely extends in the transverse direction, and the other extends in the longitudinal direction; it is of course also possible that the middle section of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b is orthogonally arranged, in this embodiment, the end section of the second low-frequency radiating arm 23b extends towards the end section of the first low-frequency radiating arm 23a, and the two are orthogonally arranged, the energy of the radiating arms (the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b) is mainly concentrated at the end section thereof, accordingly, the interference of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b mainly occurs at the end section, for this reason, in this embodiment, the end section of the first low-frequency radiating arm 23a and the end section of the second low-frequency radiating arm 23b are orthogonally arranged instead of the whole first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b, so that the arrangement of the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b is more free, as can be seen from fig. 1 and 2, the second low frequency radiating arm 23b extends along the transverse direction, then extends in a first bending manner toward the first low frequency radiating arm 23a, and finally extends in a second bending manner toward the first low frequency radiating arm 23a, so that the length of the second low frequency radiating arm 23b is long enough.
In this embodiment, the mobile terminal device 100 further includes a circuit sub board 3 electrically connected to the circuit board 1, and as can be seen from the foregoing, in this embodiment, the mobile terminal device 100 is a smart camera, and the mobile terminal device 100 further includes a first camera 4 disposed on the circuit board 1 and a second camera 5 disposed on the circuit sub board 3.
The circuit sub-board 3 and the first dual-band antenna 2a and the second dual-band antenna 2b are located on the same side of the circuit board 1, and the circuit sub-board 3 is located adjacent to the end of the first low-frequency radiating arm 23a and the end of the second low-frequency radiating arm 23b, because the sub-circuit board 1 is provided, the sub-circuit board 1 will have a coupling effect with the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b, so as to further increase the interaction between the first low-frequency radiating arm 23a and the second low-frequency radiating arm 23b, in this embodiment, the end of the first low-frequency radiating arm 23a is located opposite to and parallel to the long side of the circuit sub-board 3, and the end of the second low-frequency radiating arm 23b is located opposite to and parallel to the short side of the circuit sub-board 3, so that a coupling unit is formed between the first low-frequency radiating arm 23a and the sub-circuit board 1, and the coupling unit formed between the second low-frequency radiating arm 23b and the secondary circuit board 1 is arranged orthogonally, so that mutual influence can be avoided.
In this embodiment, the second high-frequency radiating arm 24b and the first high-frequency radiating arm 24a are disposed oppositely and symmetrically, so that the high-frequency branches of the first dual-frequency antenna 2a and the second dual-frequency antenna 2b can be molded by using the same mold. It is obvious that the present design is not limited to this, and the second high-frequency radiating arm 24b and the first high-frequency radiating arm 24a may not be symmetrically disposed.
As can be seen from the foregoing, the correspondence between the first low-frequency radiating arm 23a and the first high-frequency radiating arm 24a and the first grounding point 21a and the first feeding point 22a is not necessarily required, that is, the first low-frequency radiating arm 23a may be connected to the first grounding point 21a, the first high-frequency radiating arm 24a may be connected to the first feeding point 22a, or the first low-frequency radiating arm 23a may be connected to the first feeding point 22a, and the first high-frequency radiating arm 24a may be connected to the first grounding point 21 a. Similarly, it can be known that the correspondence between the second low-frequency radiating arm 23b and the second high-frequency radiating arm 24b, and the second grounding point 21b and the second feeding point 22b is not necessary, and the detailed correspondence is not described herein.
Specifically, in the present embodiment, the first low-frequency radiating arm 23a is connected to the first grounding point 21a, the first high-frequency radiating arm 24a is connected to the first feeding point 22a, the second low-frequency radiating arm 23b is connected to the second grounding point 21b, and the second high-frequency radiating arm 24b is connected to the second feeding point 22 b.
Further, in this embodiment, the first dual-band antenna 2a further includes a first balun portion 25a, the first balun portion 25a is disposed to connect the first grounding point 21a and the first feeding point 22a, and the second dual-band antenna 2b further includes a second balun portion 25b, and the second balun portion 25b is disposed to connect the second grounding point 21b and the second feeding point 22 b. The first balun portion 25a and the second balun portion 25b are provided to improve isolation between the first high-frequency radiating arm 24a and the second high-frequency radiating arm 24 b. The first balun portion 25a and the second balun portion 25b may be symmetrically disposed or asymmetrically disposed, and if the symmetrical arrangement is adopted, the first dual-band antenna 2a and the second dual-band antenna 2b may have a higher structural similarity, and more corresponding mold structures having the same structure may be provided, so as to reduce the production cost.
Further, in the present embodiment, the first balun portion 25a includes a first balun ground connection section 251a and a first balun feed connection section 252a, one end of the first balun ground connection section 251a is connected to the first ground point 21a, and the other end extends toward the first feeding point 22a and then extends toward the first feeding point 22a, so that the first balun ground connection section 251a is disposed in an L shape, one end of the first balun feed connection section 252a extends toward the other end of the first balun ground connection section 251a, and the other end extends toward the first feeding point 22a and then extends toward the first feeding point 22a to be connected to the first ground point 22a, so that the first balun feed connection section 252a is disposed in an L shape, so that the first balun portion 25a can be disposed in a sufficiently long space (usually, the length is required to be one quarter wavelength long ).
The second balun portion 25b includes a second balun ground connection section 251b and a second balun feed connection section 252b, one end of the second balun ground connection section 251b is connected to the second ground point 21b, and the other end extends toward the second feeding point 22b, and then extends toward and near the second feeding point 22b, so that the second balun ground connection section 251b is L-shaped, one end of the second balun feed connection section 252b extends from the other end of the second balun ground connection section 251b, and the other end extends toward the side close to the second ground point 21b, and then extends toward and near the second feeding point 22b to connect with the second feeding point 22b, so that the second balun feed connection section 252b is arranged in an L-shape, which enables a sufficiently long second balun portion 25b (typically up to a quarter wavelength in length) to be deployed in a small space.
In the present embodiment, the first grounding point 21a and the first feeding point 22a are electrically connected to the circuit board 1 through a coaxial line 6, wherein an outer conductor portion (not shown) of the coaxial line 6 is connected to the first grounding point 21a, an inner conductor 6a of the coaxial line 6 is connected to the first feeding point 22a, and the coaxial line 6 is used to reduce the influence on the first dual-frequency antenna 2a and the second dual-frequency antenna 2b, but the present design is not limited thereto, and the first grounding point 21a and the first feeding point 22a may be connected to the circuit board 1 in other manners. Obviously, the second grounding point 21b and the second feeding point 22b are electrically connected to the circuit board 1 through the coaxial line 6, and the specific connection manner is similar to that of the first grounding point 21a and the first feeding point 22a, which is not described herein again.
Referring to fig. 3, fig. 3 is a diagram of an antenna effect of a mobile terminal device according to the present invention, and it is seen from the diagram that: the isolation between the first dual-band antenna 2a and the second dual-band antenna 2b is less than-15 dB. Fig. 4 is a return loss plot for a conventional design, showing that the isolation of the antenna is less than 10 dB.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A mobile terminal device, characterized by comprising:
a housing;
a circuit board;
a first dual-band antenna provided in the housing, the first dual-band antenna having a first grounding point and a first feeding point connected to the circuit board, a first low-frequency radiating arm connected to one of the first grounding point and the first feeding point, and a first high-frequency radiating arm connected to the other of the first grounding point and the first feeding point; and the number of the first and second groups,
a second dual band antenna provided in the case and arranged side by side with the first dual band antenna, the second dual band antenna having a second grounding point and a second feeding point connected to the circuit board, a second low frequency radiation arm connected to one of the second grounding point and the second feeding point, and a second high frequency radiation arm connected to the other of the second grounding point and the second feeding point;
the second low-frequency radiating arm is arranged opposite to the first radiating arm, and at least part of the first low-frequency radiating arm and part of the second low-frequency radiating arm are arranged orthogonally;
the end section of the second low-frequency radiating arm extends towards the end section of the first low-frequency radiating arm, and the two sections are arranged orthogonally.
2. The mobile terminal device of claim 1, wherein the first dual-band antenna is centered at a distance D from the second dual-band antenna that is ≦ a half wavelength of radiation of the first low frequency radiating arm or the second low frequency radiating arm.
3. The mobile terminal device of claim 1, further comprising a circuit sub-board electrically connected to the circuit board, the circuit sub-board being located on a same side of the circuit board as the first dual-band antenna and the second dual-band antenna, and the circuit sub-board being disposed adjacent to an end of the first low-frequency radiating arm and an end of the second low-frequency radiating arm;
the tail section of the first low-frequency radiation arm is opposite to and parallel to the long edge of the circuit auxiliary plate;
the tail section of the second low-frequency radiating arm is opposite to and parallel to the short side of the circuit auxiliary board.
4. The mobile terminal device according to claim 1, wherein the second high-frequency radiating arm is disposed opposite and symmetrical to the first high-frequency radiating arm.
5. The mobile terminal device of claim 1, wherein the first low frequency radiating arm is connected to the first ground point, and the first high frequency radiating arm is connected to the first feed point;
the second low-frequency radiating arm is connected with the second grounding point, and the second high-frequency radiating arm is connected with the second feeding point.
6. The mobile terminal device of claim 5, wherein the first dual-band antenna further comprises a first balun portion connecting the first ground point and the first feed point arrangement;
the second dual-band antenna further comprises a second balun portion connecting the second ground point and the second feed point arrangement.
7. The mobile terminal device of claim 6, wherein the first balun portion and the second balun portion are symmetrically arranged.
8. The mobile terminal device of claim 6, wherein said first balun portion comprises:
one end of the first balun ground connection section is connected with the first ground point, and the other end of the first balun ground connection section extends towards the side where the first feeding point is located and then extends towards the position close to the first feeding point;
one end of the first balun feed connecting section is connected with the other end of the first balun ground connecting section, and the other end of the first balun feed connecting section extends towards the side close to the first ground point and then extends towards the first feed point to be connected with the first feed point;
the second balun section includes:
a second balun ground connection section, one end of which is connected to the second ground point, and the other end of which extends toward the second feeding point and then extends toward the second feeding point;
and one end of the second balun feed connecting section is connected with the other end of the second balun ground connecting section, and the other end of the second balun feed connecting section extends towards the side close to the second ground point and then extends towards the second feed point to be connected with the second feed point.
9. The mobile terminal device of claim 1, wherein the mobile terminal device comprises a smart wearable device, a smart camera, or a smart home device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811485320.5A CN109378569B (en) | 2018-12-05 | 2018-12-05 | Mobile terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811485320.5A CN109378569B (en) | 2018-12-05 | 2018-12-05 | Mobile terminal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109378569A CN109378569A (en) | 2019-02-22 |
| CN109378569B true CN109378569B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811485320.5A Active CN109378569B (en) | 2018-12-05 | 2018-12-05 | Mobile terminal device |
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| CN (1) | CN109378569B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525594A (en) * | 2003-02-25 | 2004-09-01 | �ձ�������ʽ���� | Antenna apparatus having high receiving efficiency |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003249820A (en) * | 2002-02-22 | 2003-09-05 | Sharp Corp | Wireless communication device |
| CN1190020C (en) * | 2002-06-04 | 2005-02-16 | 智邦科技股份有限公司 | Integrated dual-frequency printed single dipole antenna |
| CN104733857A (en) * | 2015-03-26 | 2015-06-24 | 电子科技大学 | Miniaturized high-isolation dual-band MOMO antenna |
| CN205319315U (en) * | 2015-12-30 | 2016-06-15 | 福建省汇创新高电子科技有限公司 | Be applicable to and inhale an installation dual -frenquency high isolation MIMO antenna |
| CN105977635B (en) * | 2016-05-10 | 2018-12-21 | 福建省汇创新高电子科技有限公司 | Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525594A (en) * | 2003-02-25 | 2004-09-01 | �ձ�������ʽ���� | Antenna apparatus having high receiving efficiency |
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