CN211743412U

CN211743412U - Ultra-wideband antenna

Info

Publication number: CN211743412U
Application number: CN202020783242.3U
Authority: CN
Inventors: 庄燕君; 蔡贵才; 余泽阳
Original assignee: Shenzhen United Venture Capital Development Co ltd
Current assignee: Shenzhen Lianhe Chuangzhan Construction Technology Co.,Ltd.
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-10-23
Anticipated expiration: 2030-05-12

Abstract

The utility model relates to a wireless communication's technical field especially relates to an ultra wide band antenna, and it includes ground connection portion and radiation portion, the ground connection portion welding has the conducting block, the welding has the feeder on the conducting block; the radiation part comprises a first radiation unit, a second radiation unit and a third radiation unit which are intersected with each other in pairs; a connecting part is vertically arranged on one side edge of the grounding part and is connected with one end of a first radiating unit, the length direction of the first radiating unit is consistent with that of the side edge of the grounding part, and one end, far away from the connecting part, of the first radiating unit is connected with a feeder line; the first radiating unit, the grounding part and the closed groove formed by the conductive block form a first radiating frequency band, the second radiating unit forms a second radiating frequency band, and the third radiating unit forms a third radiating frequency band. The utility model has the characteristics of the structure is succinct, whole volume is less.

Description

Ultra-wideband antenna

Technical Field

The utility model belongs to the technical field of wireless communication's technique and specifically relates to an ultra wide band antenna is related to.

Background

Two major technologies in the wireless communication field are bluetooth and IEEE802.11/a/g (54Mbps/11Mbps/22Mbps), but the transmission rate is actually reduced due to obstacles, and with the development of wireless communication and the continuous improvement of transmission quality requirements of people, the Ultra Wideband (UWB) interconnection technology (mainly applied to short-distance high-speed data communication of 10 meters and more than 100 meters, even 1 kilometer long-distance low-speed communication) mainly used for short-distance transmission is receiving more and more attention and attention as a novel wireless transmission technology. The system realizes high-speed and high-quality transmission by transmitting low-intensity narrow pulse signals instead of carrier waves, so that the system has very large bandwidth and strong anti-interference capability, and has the advantages of reducing the power of transmitted signals to achieve low power and low power consumption. Another advantage of the ultra-wideband is large space capacity, and when people continuously demand large wireless data capacity and the radio spectrum tends to saturate, a good wireless communication system is required to provide high transmission rate and must be concentrated in a small physical area, so the ultra-wideband system becomes a new favorite in wireless communication. The communications commission of 14 japanese united states of america (FCC), 2.2002, allows the use of uwb (ultra wide band) technology in consumer electronics, and opens up a 7.5GHz bandwidth (3.1GHz-10.6GHz) for uwb communications and testing. To realize the ultra-wideband transmission, an ultra-wideband antenna must be matched with the ultra-wideband transmission. The better the impedance matching of the antenna radiation part is, the wider the bandwidth of the radiation part is, so the ultra-wideband antenna has high requirement on the impedance matching of the antenna. The ultra-wideband antenna in the prior art is mostly a monopole antenna, a dipole antenna, etc., however, both the monopole antenna and the dipole antenna require a larger accommodating space. Modern wireless communication terminals are continuously developing toward beauty, lightness, thinness and miniaturization, which requires the antenna volume to be smaller and better. Planar inverted "F" antennas (commonly referred to in the industry as "PIFA" antennas) are often used inside mobile electronic device terminals as a small antenna.

Patent document US07042414B1 discloses a small ultra-wideband antenna, please refer to fig.1 and reference numerals in the drawings of the patent, which realizes an ultra-wideband antenna by the combined action of two radiation portions, wherein the first radiation portion 31 is a metal sheet with a slot 35 in the middle, and the second radiation portion 32 is made of a material different from that of the first radiation portion, and is disposed in the slot 35 and forms a certain interval with the first radiation portion 31. The ultra-wideband antenna has better radiation performance, but the radiation part and the grounding part of the antenna are separately arranged and must be fixed through a PCB, and the design mode of the two radiation parts makes the structure of the antenna complicated.

The prior publication No. US5828340A discloses a wideband antenna, please refer to fig.1 and reference numerals in the patent, in which the wideband antenna 2 includes a metal plate 10 with a taper angle 20 on a substrate 4, a grounding portion 14 and a feeding line 12; the broadband antenna 2 can achieve a bandwidth of about 40%, but the radiating portion of the antenna is integrally formed by a metal sheet 10, so that the antenna is large in size.

Therefore, it is necessary to provide an ultra-wideband antenna with a smaller size and a convenient manufacturing process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ultra wide band antenna, have the characteristics that the structure is succinct, whole volume is less to prior art exists not enoughly.

The utility model aims at realizing through the following technical scheme:

an ultra-wideband antenna, comprising:

the grounding part is welded with a conductive block, and a feeder line is welded on the conductive block;

the radiation part comprises a first radiation unit, a second radiation unit and a third radiation unit which are intersected with each other in a pairwise manner; a connecting part is vertically arranged on one side edge of the grounding part and is connected with one end of a first radiating unit, the length direction of the first radiating unit is consistent with that of the side edge of the grounding part, and one end, far away from the connecting part, of the first radiating unit is connected with a feeder line;

one end of the second radiating unit is connected with one end of the first radiating unit, which is close to the conductive block, the length direction of the second radiating unit is vertical to the first radiating unit, and the second radiating unit is far away from the grounding part;

the third radiation unit is arranged vertically to the grounding part, and one end of the third radiation unit is connected to the joint of the first radiation unit and the second radiation unit;

the first radiating unit, the grounding part and the closed groove formed by the conductive block form a first radiating frequency band, the second radiating unit forms a second radiating frequency band, and the third radiating unit forms a third radiating frequency band.

By adopting the technical scheme, the grounding point is formed by welding the grounding parts with the conductive block and the feeder line, and compared with the prior art, the utility model has simpler structure; the first, second and third radiation parts are crossed pairwise, so that the radiation part has a larger receiving or emitting range, a wider radiation angle and the characteristic of ultra-wideband; the utility model discloses holistic simple structure, the volume is less.

The present invention may be further configured in a preferred embodiment as: the grounding part, the connecting part, the first radiation unit, the second radiation unit and the third radiation unit are integrally formed.

By adopting the technical scheme, the grounding part, the connecting part, the first radiation unit, the second radiation unit and the third radiation unit are integrally formed, so that the assembling steps are reduced in the manufacturing and forming process, and the structural strength is higher.

The present invention may be further configured in a preferred embodiment as: one end of the third radiating unit is arranged at the joint between the first radiating unit and the second radiating unit, and the joint between the first radiating unit and the second radiating unit and the grounding part are also provided with insulating supporting blocks.

By adopting the technical scheme, the first radiating part, the second radiating part and the third radiating part are intersected at one position, the insulating supporting block arranged at the position can support the radiating parts, and the radiating parts are more stable on the grounding part.

The present invention may be further configured in a preferred embodiment as: the width of one end, far away from the second radiation unit, of the closed groove is larger than that of one end, close to the second radiation unit, of the closed groove.

By adopting the technical scheme, the closed slot gradually widened is used for effectively improving impedance matching, so that the width of the first radiation frequency band is increased, and the frequency bandwidth of the antenna is widened by the first radiation frequency band.

The present invention may be further configured in a preferred embodiment as: the width of one end, far away from the first radiation unit, of the third radiation unit is larger than that of one end, close to the first radiation unit, of the third radiation unit.

By adopting the technical scheme, the impedance matching of the gradually widened third radiating unit is effectively improved, so that the width of the third radiating frequency band is increased, and the frequency bandwidth of the antenna is widened by the third radiating frequency band.

The present invention may be further configured in a preferred embodiment as: the third radiation unit is also provided with at least one horizontal radiation unit, and the length direction of the horizontal radiation unit is vertical to that of the third radiation unit.

By adopting the technical scheme, the horizontal radiation unit can effectively improve impedance matching and further increase the frequency width, so that the first radiation frequency band and the second radiation frequency band are adjacent, the second radiation frequency band and the third radiation frequency band are adjacent, the three frequency bands are connected through the arrangement, and the ultra-wideband antenna is formed under the combined action.

The present invention may be further configured in a preferred embodiment as: the coverage frequency band range is 2.4 GHz-6.5 GHz.

By adopting the technical scheme, according to the FCC latest definition of the ultra-wideband (a system with the central frequency more than 2.5GHz needs at least 500MHz and-10 dB of bandwidth, and a system with the central frequency below 2.5GHz needs at least 20% of width-to-width ratio), the multi-frequency antenna meets the condition of the ultra-wideband.

To sum up, the utility model discloses a following at least one useful technological effect:

the arrangement of a plurality of radiation parts can realize more miniaturization of the structure under the condition of ultra-wideband;

the insulating supporting block can support the radiation part, so that the radiation part is more stable on the grounding part;

the first radiating unit and the third radiating unit are both provided with structures with gradually changed widths, and the structures effectively improve impedance matching and further increase the bandwidth of each radiating part, so that the first resonant frequency band is adjacent to the second resonant frequency band, and the second resonant frequency band is adjacent to the third resonant frequency band, therefore, the three frequency bands are connected to form the ultra-wideband antenna.

Drawings

Fig.1 is a schematic diagram of an overall structure of an ultra-wideband antenna according to an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of a portion a in fig.1 according to the present invention.

Reference numerals: 1. a ground part; 2. a radiation section; 21. a first radiation unit; 211. a connecting portion; 22. a second radiation unit; 221. a conductive block; 222. a feeder line; 223. an insulating support block; 23. a third radiation unit; 231. a horizontal radiating element.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig.1 and 2, the ultra-wideband antenna disclosed by the present invention includes a grounding portion 1 and a radiating portion 2.

Wherein, a conductive block 221 is welded on the grounding part 1, and a feeder 222 is welded on the conductive block 221. The radiation part 2 comprises a first radiation unit 21, a second radiation unit 22 and a third radiation unit 23 which are intersected with each other in pairs; wherein the first radiation unit 21, the second radiation unit 22 and the third radiation unit 23 intersect two by two; in the present embodiment, the length direction of the first radiation unit 21 and the length direction of the second radiation unit 22 are perpendicular to each other, and a plane formed by the length direction of the first radiation unit 21 and the length direction of the second radiation unit 22 is parallel to a plane where the ground portion 1 is located; a plane formed by the longitudinal direction of the first radiation unit 21 and the longitudinal direction of the second radiation unit 22 is perpendicular to the longitudinal direction of the third radiation unit 23.

One side of the grounding portion 1 is vertically provided with a connecting portion 211, and the connecting portion 211 and the grounding portion 1 are integrally formed. The connecting part 211 is connected with one end of the first radiating unit 21, the length direction of the first radiating unit 21 is consistent with the length direction of the side edge of the grounding part 1, and one end of the first radiating unit 21 far away from the connecting part 211 is welded with the feeder line 222; one end of the second radiating unit 22 is integrally connected with one end of the first radiating unit 21 close to the conductive block 221, the length direction of the second radiating unit 22 is perpendicular to the first radiating unit 21, and the second radiating unit 22 is arranged far away from the grounding part 1.

The third radiation unit 23 is arranged vertically to the grounding part 1, one end of the third radiation unit 23 is integrally connected to the joint of the first radiation unit 21 and the second radiation unit 22, and the joint between the first radiation unit 21 and the second radiation unit 22 and the grounding part 1 are further provided with an insulating support block 223.

The closed slot formed by the first radiating element 21, the grounding part 1 and the conductive block 221 forms a first radiating band, the second radiating element 22 forms a second radiating band, and the third radiating element 23 forms a third radiating band.

Further, the first radiation unit 21 is elongated at one end near the conductive block 221 so that the second radiation unit 22 is connected to the central position of the first radiation unit 21. The extended portion of the first radiation element 21 forms a sub radiation band.

Further, the width of the end of the closed slot far away from the second radiation unit 22 is greater than the width of the end of the closed slot near the second radiation unit 22; the width of the end of the third radiating element 23 far away from the first radiating element 21 is greater than the width of the end of the third radiating element 23 close to the first radiating element 21; of course, the width of the free end of the extension of the second radiation unit 22 and the first radiation unit 21 may be larger than the width of the end connected with the first radiation unit 21.

The third radiation unit 23 is further provided with at least one horizontal radiation unit 231, and the length direction of the horizontal radiation unit 231 is perpendicular to the length direction of the third radiation unit 23. The horizontal radiating element 231 forms a horizontal radiating band. Further, the horizontal radiating elements 231 may each have a width greater than that of the end connected to the third radiating element 23.

The frequency band range covered by the first radiation frequency band, the second radiation frequency band and the third radiation frequency band is 2.4 GHz-6.5 GHz. In addition, the horizontal radiation frequency band and the auxiliary radiation frequency band can supplement the frequency band range of 4 GHz-6.5 GHz, so that the frequency range of the ultra-wideband antenna is more continuous.

Specifically, the first radiation band has a center frequency of 3.5GHz, the second radiation band has a center frequency of 5.0GHz, and the third radiation band has a center frequency of 6.2 GHz.

The implementation principle of the embodiment is as follows: a connecting part 211 is integrally arranged on one side of the grounding part 1, the connecting part 211 is connected with the first radiating unit 21, one end of the first radiating unit 21, which is far away from the connecting part 211, is welded with a feeder line 222, and the other end of the feeder line 222 is connected with a conductive block 221 welded on the grounding part 1; the one end of second radiating element 22 is connected with first radiating element 21 is provided with insulating support piece's one end, and the vertical setting of third radiating element 23 is in first radiating element 21 and second radiating element 22's handing-over department, so sets up, and the length direction of first radiating element 21, second radiating element 22 and third radiating element 23 has formed space coordinate system, the utility model discloses a frequency covers great, and the cover face is wider to can make the structure more miniaturized.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An ultra-wideband antenna, comprising: the method comprises the following steps:

the grounding part (1), a conductive block (221) is welded on the grounding part (1), and a feeder line (222) is welded on the conductive block (221);

the radiation part (2), the radiation part (2) comprises a first radiation unit (21), a second radiation unit (22) and a third radiation unit (23) which are intersected in pairs; a connecting part (211) is vertically arranged on one side of the grounding part (1), the connecting part (211) is connected with one end of a first radiating unit (21), the length direction of the first radiating unit (21) is consistent with that of the side of the grounding part (1), and one end, far away from the connecting part (211), of the first radiating unit (21) is connected with a feeder line (222);

one end of the second radiation unit (22) is connected with one end of the first radiation unit (21) close to the conductive block (221), the length direction of the second radiation unit (22) is vertical to the first radiation unit (21), and the second radiation unit (22) is far away from the grounding part (1);

the third radiation unit (23) is arranged vertically to the grounding part (1), and one end of the third radiation unit (23) is connected to the joint of the first radiation unit (21) and the second radiation unit (22);

wherein, the first radiation unit (21), the grounding part (1) and the closed groove formed by the conductive block (221) form a first radiation frequency band, the second radiation unit (22) forms a second radiation frequency band, and the third radiation unit (23) forms a third radiation frequency band.

2. An ultra-wideband antenna as claimed in claim 1, wherein: the grounding part (1), the connecting part (211), the first radiation unit (21), the second radiation unit (22) and the third radiation unit (23) are integrally formed.

3. An ultra-wideband antenna as claimed in claim 1, wherein: one end of the third radiating unit (23) is arranged at the joint between the first radiating unit (21) and the second radiating unit, and the joint between the first radiating unit (21) and the second radiating unit and the grounding part (1) are also provided with an insulating supporting block (223).

4. An ultra-wideband antenna as claimed in claim 1, wherein: the width of one end of the closed groove far away from the second radiation unit (22) is larger than that of one end of the closed groove close to the second radiation unit (22).

5. An ultra-wideband antenna as claimed in claim 1, wherein: the width of one end, far away from the first radiation unit (21), of the third radiation unit (23) is larger than that of one end, close to the first radiation unit (21), of the third radiation unit (23).

6. An ultra-wideband antenna as claimed in claim 5, wherein: the third radiation unit (23) is also provided with at least one horizontal radiation unit (231), and the length direction of the horizontal radiation unit (231) is perpendicular to the length direction of the third radiation unit (23).

7. An ultra-wideband antenna as claimed in claim 1, wherein: the coverage frequency band range is 2.4 GHz-6.5 GHz.

8. An ultra-wideband antenna as claimed in claim 7, wherein said first radiation band is centered at 3.5GHz, said second radiation band is centered at 5.0GHz, and said third radiation band is centered at 6.2 GHz.