CN111370858A - Directional UHF antenna and electronic equipment - Google Patents
Directional UHF antenna and electronic equipment Download PDFInfo
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- CN111370858A CN111370858A CN201811590093.2A CN201811590093A CN111370858A CN 111370858 A CN111370858 A CN 111370858A CN 201811590093 A CN201811590093 A CN 201811590093A CN 111370858 A CN111370858 A CN 111370858A
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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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
- H01Q1/50—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
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
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Abstract
The application provides a directional UHF antenna and an electronic device. The directional UHF antenna comprises: the dielectric substrate comprises a first antenna radiation layer and a second antenna radiation layer which are arranged on two opposite surfaces. A first antenna body attached to the first antenna radiation layer, the first antenna body including a first radiating arm and at least one first bending arm. The second antenna body is attached to the second antenna radiation layer and is arranged symmetrically to the first antenna body, wherein the second antenna body comprises a second first radiation arm and at least one second bending arm, the second first radiation arm and the first radiation arm are symmetrically arranged and form a first radiation unit, and the second bending arm and the first bending arm are symmetrically arranged and form a second radiation unit. And the feed end of the feed unit is arranged between the first radiation arm and the first bending arm. The first antenna body and the second antenna body form a directional antenna from the omnidirectional antenna array.
Description
Technical Field
The application belongs to the technical field of communication, and relates to a directional UHF antenna and electronic equipment.
Background
In the related art, Ultra High Frequency (UHF) refers to a radio wave having a Frequency of 300 to 3000MHz and a wavelength of 1m to 1 dm. A miniaturized UHF antenna is used in a device, and is generally integrated on a substrate to transmit and receive signals in a corresponding frequency band.
For example, the UHF antenna includes a dielectric plate structure, a coaxial feed connector, a first array arm, and a second array arm, and an inner conductor of the coaxial feed connector is welded to a start end of the second array arm through the dielectric plate structure. The UHF antenna with the structure is an omnidirectional antenna, so that the gain is low and the transmission distance is short.
Disclosure of Invention
In view of the above, the present application provides a directional UHF antenna and an electronic device.
Specifically, the method is realized through the following technical scheme:
in a first aspect, the present application provides a directional UHF antenna, comprising:
the dielectric substrate comprises a first antenna radiation layer and a second antenna radiation layer which are respectively arranged on two opposite surfaces;
a first antenna body attached to the first antenna radiating layer, the first antenna body comprising a first radiating arm and at least one first bending arm;
a second antenna body attached to the second antenna radiation layer and symmetrically disposed with the first antenna body to form a log-periodic dipole antenna, wherein the second antenna body includes a second first radiation arm and at least one second bending arm, the second first radiation arm is symmetrically disposed with the first radiation arm and forms a first radiation unit, and the second bending arm is symmetrically disposed with the first bending arm and forms a second radiation unit;
and the feed unit penetrates through the dielectric substrate and is electrically connected to the first antenna main body and the second antenna main body, and the feed end of the feed unit is arranged between the first radiating arm and the first bending arm.
In one embodiment, the ends of the first radiating arm and the first bending arm are at least partially bent
In an embodiment, the end of the first bending arm is bent toward the first radiating arm, and the end of the first radiating arm is bent away from the first bending arm.
In an embodiment, the first radiating arm includes a first bending edge connected to the feeding unit and a second bending edge connected to the first bending edge, and the second bending edge is bent away from the first bending arm.
In an embodiment, the first radiating arm further includes a third bending edge connected to the second bending edge, the second bending edge and the third bending edge are at a predetermined bending angle, and the third bending edge extends toward a center of symmetry direction of the first antenna body and the second antenna body.
In an embodiment, the first bending arm includes a fourth bending edge connected to the feeding unit and a fifth bending edge connected to the fourth bending edge, the fourth bending edge and the fifth bending edge are at a preset bending angle, and the fifth bending edge extends toward the first radiation arm.
In an embodiment, the first radiating arm and the first bending arm are separated by a distance D, and the operating wavelength of the directional UHF antenna is set to λLWherein D ═ λL/4。
In an embodiment, when there are two or more first bending arms, the spacing distance between two adjacent first bending arms is the same and the bending direction is the same.
In an embodiment, the first bending arm and the second bending arm are respectively provided with two second radiating elements, and the two second radiating elements are distributed on the dielectric substrate at intervals.
In an embodiment, the feeding unit includes a conductive body, a first feeding network connected to the first radiating arm and the at least one first bending arm, and a second feeding network connected to the second radiating arm and the at least one second bending arm, and the conductive body penetrates through the dielectric substrate and is connected to the first feeding network and the second feeding network.
In an embodiment, the feed unit further comprises a ground terminal connected to the first feed network between the first radiating arm and the conductor.
In a second aspect, the present application provides an electronic device comprising a device body, a control module assembled in the device body, and the directional UHF antenna as described above, the directional UHF antenna being electrically connected to the control module.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the first antenna main body and the second antenna main body form a symmetrical log periodic dipole antenna, and the omnidirectional antenna array forms a directional antenna. A first radiating element and at least one second radiating element are arranged on the directional UHF antenna, the gain of the antenna is high, and the transmission distance is long.
Drawings
Fig. 1 is a schematic structural diagram of a directional UHF antenna according to an exemplary embodiment of the present application.
Fig. 2 is a schematic front structural diagram of a directional UHF antenna according to an exemplary embodiment of the present application.
Fig. 3 is a schematic diagram of a back structure of a directional UHF antenna according to an exemplary embodiment of the present application.
Fig. 4 is a schematic cross-sectional structural diagram of a directional UHF antenna according to an exemplary embodiment of the present application.
Fig. 5 is a return loss curve diagram of the directional UHF antenna in an operating state according to an exemplary embodiment of the present application.
Fig. 6 is a gain pattern of a directional UHF antenna shown in an exemplary embodiment of the present application.
Fig. 7 is a graph illustrating the gain of a directional UHF antenna as a function of frequency according to an exemplary embodiment of the present application.
In the figure, a dielectric substrate 10; a first antenna radiation layer 11; a second antenna radiation layer 12; a first antenna main body 20; a first radiating arm 21; a first bent side 211; a second folded edge 212; a third folded crimp 213; a first bending arm 22; a fourth bending edge 221; a fifth folded edge 222; a second antenna main body 30; a second radiating arm 31; a second bending arm 32; a power feeding unit 40; a first feeding network 41; a second feed network 42; a conductive body 43; and a ground terminal 44.
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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
As shown in fig. 1 and 2, the directional UHF antenna includes a dielectric substrate 10, a first antenna body 20, a second antenna body 30, and a feeding unit 40, and the dielectric substrate 10 includes a first antenna radiation layer 11 and a second antenna radiation layer 12 respectively provided on two opposite surfaces. The first antenna body 20 is attached to the first antenna radiation layer 11, the first antenna body 20 comprising a first radiating arm 21 and at least one first bending arm 22.
The second antenna body 30 is attached to the second antenna radiation layer 12 and is symmetrically disposed with the first antenna body 20 to form a log periodic dipole antenna, wherein the second antenna body 30 includes a second first radiation arm 31 and at least one second bending arm 32. The second first radiating arm 31 is symmetrically disposed with the first radiating arm 21 and forms a first radiating element, and the second bending arm 32 is symmetrically disposed with the first bending arm 22 and forms a second radiating element.
The feeding unit 40 penetrates through the dielectric substrate 10 and is electrically connected to the first antenna body 20 and the second antenna body 30, and a feeding end of the feeding unit 40 is disposed between the first radiating arm 21 and the first bending arm 22.
The dielectric substrate 10 has a plate-like structure, and the first antenna radiation layer 11 and the second antenna radiation layer 12 are provided on the dielectric substrate 10 and parallel to the surface of the dielectric substrate 10 or overlapped with the surface of the dielectric substrate 10. Optionally, the first antenna body 20 coincides with a first side surface of the dielectric substrate 10, and the second antenna body 30 coincides with a second side surface of the dielectric substrate 10.
The first antenna body 20 is disposed on the first antenna radiation layer 11, the second antenna body 30 is disposed on the second antenna radiation layer 12, the first antenna body 20 and the second antenna body 30 are separated by the dielectric substrate 10, and the projection of the second antenna body 30 on the first antenna radiation layer 11 is disposed symmetrically with respect to the first antenna body 20, so that the first antenna body 20 and the second antenna body 30 form a symmetric log-periodic dipole antenna. In the following description, the central axis of symmetry of the first antenna body 20 and the second antenna body 30 is defined as a symmetry axis, the longitudinal direction of the symmetry axis is defined as a transverse direction, and the direction perpendicular to the symmetry axis is defined as a longitudinal direction.
The first antenna body 20 and the second antenna body 30 form a symmetric log periodic dipole antenna, and the omnidirectional antenna array forms a directional antenna. A first radiating element and at least one second radiating element are arranged on the directional UHF antenna, the gain of the antenna is high, and the transmission distance is long.
Optionally, the first radiating arm 21 and the first bending arm 22 are on the same side of the symmetry axis. The first radiating arm 21 and the first bent arm 22 are spaced apart from each other on the first antenna radiating layer 11 and extend outward from the feed network. Optionally, the feeding unit 40 extends in the length direction of the symmetry axis.
In an embodiment, the ends of the first radiating arm 21 and the first bending arm 22 are at least partially bent, and correspondingly, the ends of the second radiating arm 31 and the second bending arm 32 are also partially bent. The first antenna main body 20 and the second antenna main body 30 are transversely extended and spaced by a preset distance, the longitudinal size is reduced by bending the tail ends, and the assembly size of the directional UHF antenna is convenient to adjust. And by changing the bending direction of the first radiating arm 21 and the first bending arm 22, the front-to-back ratio of the antenna of the second radiating unit and the antenna of the first radiating unit can be adjusted, the gain value of the antenna is improved, and the transmission range of signals is expanded. In an optional embodiment, the coverage frequency band of the directional UHF antenna is 427MHz-460 MHz.
As shown in fig. 2 and 3, in an embodiment, the end of the first bending arm 22 is bent toward the first radiating arm 21, and the end of the first radiating arm 21 is bent away from the first bending arm 22. The first bending arm 22 is located at the front end of the directional UHF antenna, and the first radiating arm 21 is located at the rear end of the directional UHF antenna. One end of the first bending arm 22 is connected to the feeding unit 40, and the other end extends toward the first radiating arm 21. The first radiating arm 21 has one end connected to the feeding unit 40 and the other end extending away from the first bending arm 22. The first bending arm 22 and the first radiating arm 21 are bent at their distal ends, so that the longitudinal width of the first antenna body 20 can be reduced. The first radiating arm 21 and the second radiating arm 31 are symmetrically disposed, and correspondingly, the second radiating arm 31 is also provided with a corresponding bending structure.
In an alternative embodiment, the first radiating arm 21 includes a first bending edge 211 connected to the feeding unit 40 and a second bending edge 212 connected to the first bending edge 211, and the second bending edge 212 is bent away from the first bending arm 22. The first radiating arm 21 is provided in an approximately "L" shaped configuration, and has a small longitudinal width. In an alternative embodiment, the arm width of the first bending edge 211 is equal to the arm width of the second bending edge 212. In an embodiment, the arm widths of the first bending edge 211 and the second bending edge 212 are set to be 5-10 mm, and in particular, the arm widths may be set to be 5mm, 6mm, 7mm, 8mm, 10mm, and the like.
In an optional embodiment, the first radiating arm 21 further includes a third bending edge 213 connected to the second bending edge 212, the second bending edge 212 and the third bending edge 213 are at a predetermined bending angle, and the third bending edge 213 extends toward the symmetric center of the first antenna body 20 and the second antenna body 30. The second bent edge 212 is bent again at its end to form a third bent edge 213, and the third bent edge 213 extends toward the symmetry axis, so that the first radiation arm 21 is formed into an approximate "U" shape. The first radiation arm 21 provided with the third bent edge 213 can reduce the longitudinal width of the first radiation unit, reduce backward radiation generated by the first radiation unit in the directional UHF antenna, and improve the front-to-back ratio of the directional UHF antenna. In an alternative embodiment, the second bending edge 212 is parallel to the axis of symmetry. Alternatively, the arm width of the first radiation arm 21 is set to 6 mm.
In an alternative embodiment, the first bending edge 211 is perpendicular to the second bending edge 212, and the third bending edge 213 is perpendicular to the second bending edge 212. The first bent side 211 is connected to the feeding unit 40, and the feeding unit 40 is set at the symmetry axis. Optionally, the first bending edge 211 is perpendicular to the symmetry axis. The third bent edge 213 is bent toward the symmetry axis, so that the length of the directional UHF antenna in the transverse direction can be reduced. Furthermore, the third bent edge 213 is bent toward the symmetry axis, which can improve the front-to-back ratio of the antenna, so that the backward radiation or reception of the directional UHF antenna is smaller.
In an alternative embodiment, the first bending edge 211 has a side length of 50-60 mm, the second bending edge 212 has a side length of 60-65 mm, and the third bending edge 213 has a side length of 40-50 mm. In one embodiment, the first bending edge 211 has a side length of 56 mm, the second bending edge 212 has a side length of 63 mm, and the third bending edge 213 has a side length of 45 mm. The first radiating arm 21 has a double-bent structure, and the first radiating arm 21 having this structure can reduce the return loss of the antenna and increase the antenna gain.
In an alternative embodiment, the first bending arm 22 includes a fourth bending edge 221 connected to the feeding unit 40 and a fifth bending edge 222 connected to the fourth bending edge 221, the fourth bending edge 221 and the fifth bending edge 222 are at a preset bending angle, and the fifth bending edge 222 extends toward the first radiating arm 21. The first bending arm 22 and the first radiation arm 21 are spaced apart from each other, the fourth bending edge 221 extends outward in the longitudinal direction, and the fourth bending edge 221 is inclined at a predetermined angle with respect to the symmetry axis, for example, the fourth bending edge 221 is perpendicular to the symmetry axis or inclined with respect to the symmetry axis. The fifth bending edge 222 is bent from the end of the fourth bending edge 221 and extends toward the first radiating arm 21, so as to reduce the longitudinal width of the antenna. In an alternative embodiment, the length of the fourth bending edge 221 is equal to the length of the first bending edge 211. In an alternative embodiment, the fifth bending edge 222 is parallel to the symmetry axis. The first bending arm 22 and the second bending arm 32 are symmetrically disposed, and accordingly, the second bending arm 32 is also provided with the same bending structure as the first bending arm 22.
In an alternative embodiment, the side length of the fourth bending side 221 is set to be 50-60 mm, and the side length of the fifth bending side 222 is set to be 100-110 mm. In one embodiment, the fourth bending edge 221 has a side length of 56 mm, and the fifth bending edge 222 has a side length of 108 mm. In an alternative embodiment, the fourth bending edge 221 is perpendicular to the fifth bending edge 222. In an alternative embodiment, the arm width of the fourth bending edge 221 is equal to the arm width of the fifth bending edge 222. In one embodiment, the arm widths of the fourth bending edge 221 and the fifth bending edge 222 are set to 6 mm. The first bending arm 22 is designed into an L-shaped structure, and is spaced from the first radiating arm 21 by a corresponding distance, the front-to-back ratio of the antenna is large, and the longitudinal width dimension is small.
In one embodiment, the first radiating arm 21 and the first bending arm 22 are separated by a distance D, and the operating wavelength of the directional UHF antenna is set to λLWherein D ═ λL/4. The spacing distance between the first radiating arm 21 and the first bending arm 22 is correlated with the operating wavelength of the antenna, so as to stabilize the signal received or transmitted by the antenna and keep the size of the antenna small. For example, the operating wavelength of the directional UHF antenna is set to 600mm, and accordingly, the distance between the first radiating arm 21 and the first bending arm 22 is set to 150 mm. Specifically, the first bending edge 211 and the fourth bending edge 221 are parallel to each otherThe pitch was 150 mm. Where the operating wavelength is equal to the propagation velocity of the signal in air divided by its operating frequency.
In an alternative embodiment, when two or more first bending arms 22 are provided, the distance between two adjacent first bending arms 22 is the same and the bending direction is the same.
The first bending arms 22 are provided with two or more, and adjacent two first bending arms 22 are spaced apart by a preset distance D1, optionally, D1 is equal to D. Namely, the spacing distance between two adjacent first bending arms 22 is equal to the spacing distance between the first radiating arm 21 and the adjacent first bending arm 22. When the spacing distance between the first leading radiation arm 21 and the adjacent first bending arm 22 is 150mm, the spacing distance between the adjacent first bending arms 22 is also set to be 150 mm.
The plurality of first bending arms 22 have the same structure, are arranged on the same side and extend along the transverse direction, the gain of the antenna is convenient to adjust, and the plurality of first bending arms 22 are arranged on the same side of the feeding end and can further adjust the front-to-back ratio of the antenna.
In a specific embodiment, two of the first bending arm 22 and the second bending arm 32 are provided to form two second radiation units, and the two second radiation units are spaced apart from each other on the dielectric substrate 10. The antenna is provided with two second radiation units, the two second radiation units and the first radiation units are uniformly distributed on the dielectric substrate 10 to form directional antenna, the performance of transmitting and receiving electromagnetic waves is strong, the longitudinal and transverse dimensions of the antenna are small, the front-to-back ratio of the antenna is large, and the performance is good.
As shown in fig. 4, in an embodiment, the feeding unit 40 includes a conductive body 43, a first feeding network 41 connected to the first radiating arm 21 and the at least one first bending arm 22, and a second feeding network 42 connected to the second radiating arm 31 and the at least one second bending arm 32, wherein the conductive body 43 penetrates through the dielectric substrate 10 and connects the first feeding network 41 and the second feeding network 42.
The first feeding network 41 is arranged on the first antenna radiation layer 11 and extends along the symmetry axis, and the first radiating arm 21 and the at least one first bending arm 22 are connected to the first feeding network 41. The first radiating arm 21 is connected to the first feed network 41 on one side of the conductor 43, and the first bent arm 22 is connected to the first feed network 41 on the other side of the conductor 43.
Correspondingly, the second feeding network 42 is arranged symmetrically to the first feeding network 41; or the projection of the second feeding network 42 onto the first antenna radiation layer 11 coincides with the first feeding network 41. The second radiating arm 31 is connected to the second feed network 42 on one side of the conductor 43, and the second bent arm 32 is connected to the second feed network 42 on the other side of the conductor 43. In an alternative embodiment, the width of the first feeding network 41 is set to 3-4 mm. For example, the width of the first feeding network 41 is set to 3 mm, 3.2 mm, 3.4 mm, 3.5 mm, 4 mm, or the like.
The conductive body 43 is made of a conductive material, and the conductive body 43 is made of a metal material. The conductor 43 penetrates the dielectric substrate 10 to electrically connect the first power supply network 41 and the second power supply network 42, so that signals can be transmitted between the conductor 43 and the first power supply network 41 and the second power supply network 42, and the signals can be transmitted smoothly. The first feeding network 41 and the second feeding network 42 are connected by an electric conductor 43, wherein an insulating region is formed in a region where the first feeding network 41 surrounds the electric conductor 43, so that the electric conductor 43 can be connected with a feeding line, and the feeding line connection is convenient.
In an alternative embodiment, the feeding unit 40 further comprises a ground terminal 44 connected to the first feeding network 41 between the first radiating arm 21 and the conductor 43. The ground connection, which is convenient, is connected to the ground terminal 44 of the first feeding network 41.
Fig. 5 is a return loss curve diagram of the directional UHF antenna provided with two second radiation units in the operating state of the present invention, wherein the operating bandwidth of the antenna with return loss below-10 dB is 427MHz-453 MHz. FIG. 6 is a gain pattern for a directional UHF antenna in which the maximum gain of the antenna reaches 5.25 dBi. FIG. 7 is a graph of the gain of a directional UHF antenna as a function of frequency, the gain of the antenna being greater than 5dBi in the 427MHz-460MHz band.
The directional UHF antenna disclosed in the above embodiment is applied to an electronic device so that the electronic device can transmit and receive signals of corresponding frequencies. In one embodiment, the electronic device includes a device body, a control module mounted in the device body, and the directional UHF antenna as disclosed in the above embodiments, the directional UHF antenna being electrically connected to the control module. The control module can receive the electric signal transmitted by the directional UHF antenna and send corresponding information outwards through the directional UHF antenna. If the directional UHF antenna is applied to a base station and other electronic equipment to transmit and receive signals, the directional UHF antenna has the advantages of large gain, large transmission range, good directional effect and good controllability of assembly size.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (12)
1. A directional UHF antenna, comprising:
a dielectric substrate (10) including a first antenna radiation layer (11) and a second antenna radiation layer (12) respectively provided on two opposite surfaces;
a first antenna body (20) attached to the first antenna radiation layer (11), the first antenna body (20) comprising a first radiating arm (21) and at least one first bending arm (22);
a second antenna body (30) attached to the second antenna radiation layer (12) and symmetrically disposed with the first antenna body (20) to form a log-periodic dipole antenna, wherein the second antenna body (30) includes a second radiation arm (31) and at least one second bending arm (32), the second radiation arm (31) is symmetrically disposed with the first radiation arm (21) and forms a first radiation element, and the second bending arm (32) is symmetrically disposed with the first bending arm (22) and forms a second radiation element;
and the feeding unit (40) penetrates through the dielectric substrate (10) and is electrically connected to the first antenna main body (20) and the second antenna main body (30), and a feeding end of the feeding unit (40) is arranged between the first radiating arm (21) and the first bending arm (22).
2. The directional UHF antenna of claim 1, characterized in that the ends of the first radiating arm (21) and the first bending arm (22) are at least partially bent.
3. The directional UHF antenna of claim 2, wherein the distal end of the first bending arm (22) is bent in the direction of the first radiating arm (21), and the distal end of the first radiating arm (21) is bent in the direction away from the first bending arm (22).
4. The directional UHF antenna of claim 3, characterized in that the first radiating arm (21) includes a first bent edge (211) connected to the feed unit (40) and a second bent edge (212) connected to the first bent edge (211), the second bent edge (212) being bent away from the first bent arm (22).
5. The directional UHF antenna of claim 4, characterised in that the first radiating arm (21) further comprises a third bending edge (213) connecting the second bending edge (212), the second bending edge (212) and the third bending edge (213) being at a predetermined bending angle, the third bending edge (213) extending towards the centre of symmetry of the first antenna body (20) and the second antenna body (30).
6. The directional UHF antenna of claim 3, characterised in that the first bending arm (22) comprises a fourth bending edge (221) connected to the feed unit (40) and a fifth bending edge (222) connected to the fourth bending edge (221), the fourth bending edge (221) and the fifth bending edge (222) being at a predetermined bending angle, the fifth bending edge (222) extending towards the first radiating arm (21).
7. The directional UHF antenna of claim 1, characterised in that the first radiating arm (21) and the first bending arm (22) are separated by a distance D, the operating wavelength of the directional UHF antenna being set to λLWherein D ═ λL/4。
8. The directional UHF antenna of claim 1, wherein when two or more first bending arms (22) are provided, the distance between adjacent first bending arms (22) is the same and the bending direction is the same.
9. The directional UHF antenna of claim 1, wherein the first (22) and second (32) bending arms are each provided in two to form two second radiating elements, the two second radiating elements being spaced apart from the dielectric substrate (10).
10. The directional UHF antenna of claim 1, wherein the feed element (40) includes a conductive body (43), a first feed network (41) connecting the first radiating arm (21) and at least one first bent arm (22), and a second feed network (42) connecting the second radiating arm (31) and at least one second bent arm (32), the conductive body (43) penetrating the dielectric substrate (10) and connecting the first feed network (41) and the second feed network (42).
11. The directional UHF antenna of claim 10, characterized in that the feed unit (40) further includes a ground (44) connected to the first feed network (41) between the first radiating arm (21) and the electrical conductor (43).
12. An electronic device comprising a device body, a control module mounted within the device body, and the directional UHF antenna of any of claims 1 to 11, the directional UHF antenna being electrically connected to the control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811590093.2A CN111370858B (en) | 2018-12-25 | 2018-12-25 | Directional UHF antenna and electronic equipment |
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| CN201811590093.2A CN111370858B (en) | 2018-12-25 | 2018-12-25 | Directional UHF antenna and electronic equipment |
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| CN111370858A true CN111370858A (en) | 2020-07-03 |
| CN111370858B CN111370858B (en) | 2022-11-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987424A (en) * | 2020-08-21 | 2020-11-24 | 福耀玻璃工业集团股份有限公司 | Antenna structure, antenna glass assembly and vehicle |
| CN114039196A (en) * | 2021-10-28 | 2022-02-11 | 深圳市英佳创电子科技有限公司 | High-performance 4G antenna |
| CN114614255A (en) * | 2020-12-08 | 2022-06-10 | 华为技术有限公司 | Antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111987424A (en) * | 2020-08-21 | 2020-11-24 | 福耀玻璃工业集团股份有限公司 | Antenna structure, antenna glass assembly and vehicle |
| CN111987424B (en) * | 2020-08-21 | 2022-03-15 | 福耀玻璃工业集团股份有限公司 | Antenna structure, antenna glass assembly and vehicle |
| CN114614255A (en) * | 2020-12-08 | 2022-06-10 | 华为技术有限公司 | Antenna |
| CN114039196A (en) * | 2021-10-28 | 2022-02-11 | 深圳市英佳创电子科技有限公司 | High-performance 4G antenna |
| CN114039196B (en) * | 2021-10-28 | 2024-02-09 | 深圳市英佳创电子科技有限公司 | High-performance 4G antenna |
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