CN119231174A - Dual-band broadband antenna and wearable device - Google Patents
Dual-band broadband antenna and wearable device Download PDFInfo
- Publication number
- CN119231174A CN119231174A CN202411469060.8A CN202411469060A CN119231174A CN 119231174 A CN119231174 A CN 119231174A CN 202411469060 A CN202411469060 A CN 202411469060A CN 119231174 A CN119231174 A CN 119231174A
- Authority
- CN
- China
- Prior art keywords
- antenna
- floor
- dielectric substrate
- monopole
- dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005404 monopole Effects 0.000 claims abstract description 76
- 239000000758 substrate Substances 0.000 claims abstract description 56
- 230000008878 coupling Effects 0.000 claims description 38
- 238000010168 coupling process Methods 0.000 claims description 38
- 238000005859 coupling reaction Methods 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 27
- 230000009977 dual effect Effects 0.000 claims description 21
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 15
- 238000009434 installation Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000004984 smart glass Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Details Of Aerials (AREA)
Abstract
本发明公开了一种双频段宽带天线和可穿戴式设备，涉及天线技术领域，双频段宽带天线包括介质基板、天线地板、单极子天线以及馈电端口，天线地板设于介质基板的一侧，天线地板呈L形结构，天线地板相对于介质基板的投影位置形成有缺口；单极子天线连接于介质基板并位于缺口位置，是单极子天线包括第一段和第二段，第一段的长度大于第二段的长度；馈电端口连接单极子天线和天线地板，馈电端口设于第一段和第二段的连接处。
The invention discloses a dual-band broadband antenna and a wearable device, and relates to the field of antenna technology. The dual-band broadband antenna comprises a dielectric substrate, an antenna floor, a monopole antenna and a feeding port. The antenna floor is arranged on one side of the dielectric substrate, and the antenna floor is in an L-shaped structure. A notch is formed at a projection position of the antenna floor relative to the dielectric substrate. The monopole antenna is connected to the dielectric substrate and is located at the notch position. The monopole antenna comprises a first section and a second section, and the length of the first section is greater than the length of the second section. The feeding port connects the monopole antenna and the antenna floor, and the feeding port is arranged at the connection between the first section and the second section.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a dual-band broadband antenna and wearable equipment.
Background
Along with the rapid development of the internet of things technology, wearable electronic equipment gradually permeates into aspects of daily life of people. Different wearable devices according to the functions thereof can be generally divided into two types, one type is a relatively independent mobile terminal, such as smart glasses, smart watches and the like, and the other type is an expansion of the mobile terminal and is used as a sensor for detecting the physical state of a user, and compared with the former type, the wearable device has higher requirements on the communication capability of an antenna.
In order to guarantee portability, aesthetics and wearing comfort of the wearable device, the wearable device generally has a very small volume and an irregular profile, which undoubtedly limits the design space of the antenna. With the rapid development of wireless communication, the number of WiFi frequency bands is increasing, including multiple frequency bands such as 2.4G/5G/6G, and the bandwidth is also increasing. In order to be compatible with different standards of each country and cover the existing WiFi frequency band, the new generation of WLAN antenna needs to have the characteristics of broadband multi-frequency band. However, the existing antenna design schemes have the problem of larger overall size of the antenna, and are difficult to meet the two requirements of miniaturization and broadband at the same time, so how to set a broadband WLAN antenna on a small-sized wearable device is needed to be solved.
Disclosure of Invention
The invention mainly aims to provide a dual-band broadband antenna and wearable equipment, and aims to realize that the broadband antenna expands the bandwidth of the antenna in a smaller installation size.
In order to achieve the above object, the present invention provides a dual band wideband antenna, comprising:
A dielectric substrate;
the antenna floor is arranged on one side of the medium substrate, the antenna floor is of an L-shaped structure, and a notch is formed in the projection position of the antenna floor relative to the medium substrate;
The monopole antenna is connected to the dielectric substrate and positioned at the notch position, and comprises a first section and a second section, and the length of the first section is greater than that of the second section;
the feed port is connected with the monopole antenna and the antenna floor, and is arranged at the joint of the first section and the second section.
In an embodiment, the monopole antenna is disposed in a U shape and is transversely disposed at the notch along the length direction of the antenna floor, and the feed port is disposed at a side of the monopole antenna near the antenna floor.
In one embodiment, the antenna floor is adjacent to one end of the monopole antenna in the length direction, and a protrusion structure is formed along the width direction of the antenna floor, and the protrusion structure is coupled with the monopole antenna.
In an embodiment, the dual-band wideband antenna further includes a coupling metal sheet, where the coupling metal sheet is disposed on a side of the dielectric substrate opposite to the antenna floor, and the coupling metal sheet corresponds to a projection position of the monopole antenna on the dielectric substrate.
In an embodiment, the dielectric substrate is a rectangular structure with a regular shape, and the edge of the antenna floor is flush with the outer edge of the dielectric substrate.
In one embodiment, the dielectric substrate is trapezoid, and the antenna floor edge is flush with the outer edge of the dielectric substrate.
In one embodiment, the antenna floor comprises two pieces, and each antenna floor is arranged on two opposite sides of the dielectric substrate.
In an embodiment, each of the antenna floors is formed with a plurality of short-circuit vias, and the short-circuit vias of the two antenna floors correspond to each other.
In one embodiment, the monopole antenna has an arc-shaped bent structure.
The invention also proposes a wearable device comprising a dual-band broadband antenna comprising:
A dielectric substrate;
the antenna floor is arranged on one side of the medium substrate, the antenna floor is of an L-shaped structure, and a notch is formed in the projection position of the antenna floor relative to the medium substrate;
The monopole antenna is connected to the dielectric substrate and positioned at the notch position, and comprises a first section and a second section, and the length of the first section is greater than that of the second section;
the feed port is connected with the monopole antenna and the antenna floor, and is arranged at the joint of the first section and the second section.
The technical scheme of the invention provides a dual-band broadband antenna, which specifically comprises a dielectric substrate, an antenna floor, a monopole antenna and a feed port. The L-shaped structure of the antenna floor and the notch design provide an effective installation position for the monopole antenna, and the presence of the notch helps to reduce the size of the dual-band broadband antenna while maintaining the performance thereof, and the monopole antenna is composed of two sections of different lengths, which helps to adjust the resonant frequency of the antenna, thereby covering a wider operating band. The feed port is positioned at the joint of the monopole antenna, so that the efficiency of energy transmission is improved, the loss is reduced, impedance matching can be realized without adding lumped elements, and the overall working efficiency of the dual-band broadband antenna is improved. The dual-band broadband antenna in the scheme realizes the frequency response of wide bandwidth while keeping smaller size, so as to facilitate the antenna installation design of the small-size wearable equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a top view of an embodiment 1 of a dual-band wideband antenna provided by the present invention;
fig. 2 is a bottom view of embodiment 1 of the dual band wideband antenna of fig. 1;
fig. 3 is a side view of embodiment 1 of the dual band wideband antenna of fig. 1;
Fig. 4 is a rear view of embodiment 1 of the dual band wideband antenna of fig. 1;
Fig. 5 is a top view of embodiment 2 of the dual-band wideband antenna provided by the present invention;
fig. 6 is a bottom view of embodiment 2 of the dual band wideband antenna of fig. 5;
Fig. 7 is a schematic diagram of an S11 simulation result of the dual-band wideband antenna provided by the present invention;
Fig. 8 is a schematic diagram of a simulated efficiency curve of a dual-band wideband antenna according to the present invention;
Fig. 9 is a schematic diagram of a voltage standing wave ratio real test result of embodiment 2 of the dual-band wideband antenna of the present invention.
Reference numerals illustrate:
1000. a dual band wideband antenna; 1, a dielectric substrate, 2, an antenna floor, 21, a protruding structure, 22, a short circuit via hole, 3, a monopole antenna, 31, a first section, 32, a second section, 4, a feed port and 5, a coupling metal sheet.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Along with the rapid development of the internet of things technology, wearable electronic equipment gradually permeates into aspects of daily life of people. Different wearable devices according to the functions thereof can be generally divided into two types, one type is a relatively independent mobile terminal, such as smart glasses, smart watches and the like, and the other type is an expansion of the mobile terminal and is used as a sensor for detecting the physical state of a user, and compared with the former type, the wearable device has higher requirements on the communication capability of an antenna.
In order to guarantee portability, aesthetics and wearing comfort of the wearable device, the wearable device generally has a very small volume and an irregular profile, which undoubtedly limits the design space of the antenna. With the rapid development of wireless communication, the number of WiFi frequency bands is increasing, including multiple frequency bands such as 2.4G/5G/6G, and the bandwidth is also increasing. In order to be compatible with different standards of each country and cover the existing WiFi frequency band, the new generation of WLAN antenna needs to have the characteristics of broadband multi-frequency band. However, the existing antenna design schemes have the problem of larger overall size of the antenna, and are difficult to meet the two requirements of miniaturization and broadband at the same time, so how to set a broadband WLAN antenna on a small-sized wearable device is needed to be solved.
In order to solve the above-mentioned problems, please refer to fig. 1 to 9, the present invention proposes a dual-band wideband antenna 1000, which comprises a dielectric substrate 1, an antenna floor 2, a monopole antenna 3 and a feeding port 4, wherein the antenna floor 2 is disposed on one side of the dielectric substrate 1, the antenna floor 2 is in an L-shaped structure, a notch is formed at a projection position of the antenna floor 2 relative to the dielectric substrate 1, the monopole antenna 3 is connected to the dielectric substrate 1 and is disposed at the notch position, the monopole antenna 3 comprises a first section 31 and a second section 32, the length of the first section 31 is greater than the length of the second section 32, the feeding port 4 is connected to the monopole antenna 3 and the antenna floor 2, and the feeding port 4 is disposed at a connection position of the first section 31 and the second section 32.
The technical scheme of the invention provides a dual-band broadband antenna 1000, which specifically comprises a dielectric substrate 1, an antenna floor 2, a monopole antenna 3 and a feed port 4. The L-shaped structure and notch design of the antenna floor 2 provides an efficient mounting location for the monopole antenna 3, while the presence of the notch helps to reduce the size of the dual band wideband antenna 1000 while maintaining its performance, the monopole antenna 3 being made up of two sections of different length, which helps to adjust the resonant frequency of the antenna, thus covering a wider operating band. The feeding port 4 is located at the joint of the monopole antenna 3, which is helpful for improving the efficiency of energy transmission, reducing loss, realizing impedance matching without adding lumped elements, and improving the overall working efficiency of the dual-band wideband antenna 1000. The dual-band wideband antenna 1000 in the present solution achieves a wide bandwidth frequency response while maintaining a small size, so as to facilitate antenna installation design of a small-sized wearable device.
In an alternative embodiment, in order to facilitate installation of the monopole antenna 3 and to achieve both installation space and operation bandwidth of the monopole antenna 3, the monopole antenna 3 is disposed in a U-shape and is disposed transversely along the length direction of the antenna floor 2 at a notch position, and the feed port 4 is disposed on a side of the monopole antenna 3 close to the antenna floor 2. Referring to fig. 1, the monopole antenna 3 is provided in a U shape and is placed laterally along the length direction of the antenna floor 2. It helps to optimize the radiation pattern of the antenna, improving its directivity, thereby providing better signal transmission in a specific direction. In addition, the feeding port 4 is disposed on the side of the monopole antenna 3 close to the antenna floor 2, which helps to change the impedance matching of the dual-band wideband antenna 1000, thereby affecting the operating bandwidth of the antenna. By arranging the feed port 4 at the connection position of the first section 31 and the second section 32, the first section 31 and the second section 32 share one feed port 4, and the lengths of the first section 31 and the second section 32 are different, so that the two sections act on different working frequencies, thereby simplifying the installation structure of the dual-band broadband antenna 1000 and expanding the bandwidth of the dual-band broadband antenna 1000. The antenna solution is compact in structure and high in efficiency, and is suitable for application scenes with limited antenna installation space, such as wearable devices such as intelligent glasses and intelligent watches, and portable electronic devices such as intelligent mobile phones and tablet computers.
In an alternative embodiment, in order to adjust the coupling strength between the monopole antenna 3 and the antenna floor 2, the antenna floor 2 is adjacent to one end of the monopole antenna 3 in the length direction, and a protrusion 21 is formed to extend in the width direction of the antenna floor 2, and the protrusion 21 is coupled to the monopole antenna 3. Referring to fig. 1, the protrusion structure 21 extends in the width direction of the antenna floor 2 and is coupled with the monopole antenna 3. The protruding structure 21 can enhance the electromagnetic performance of the antenna, and the distance between the protruding structure 21 and the right end of the monopole antenna 3 can be changed by adjusting the size of the protruding structure 21, so that the coupling strength between the antenna floor 2 and the right end of the monopole antenna 3 is adjusted, and the transmission and the reception of electromagnetic wave signals are improved. In addition, in order to further adjust the coupling strength between the antenna floor 2 and the monopole antenna 3, the dual-band wideband antenna 1000 further includes a coupling metal sheet 5, where the coupling metal sheet 5 is disposed on a side of the dielectric substrate 1 facing away from the antenna floor 2, and the coupling metal sheet 5 corresponds to a projection position of the monopole antenna 3 on the dielectric substrate 1. Referring to fig. 1 to 4, the coupling metal sheet 5 is located at the other side of the dielectric substrate 1, corresponding to the projection position of the monopole antenna 3 on the dielectric substrate 1, and is close to the end of the antenna floor 2 facing away from the protrusion structure 21. By adjusting the distance between the coupling metal sheet 5 and the antenna floor 2, the coupling strength between the antenna floor 2 and the left end of the monopole antenna 3 can be adjusted, and the transmission and the reception of electromagnetic wave signals can be improved. Specifically, the distance between the coupling metal sheet 5 and the antenna floor 2 can be adjusted by changing the thickness of the dielectric substrate 1 or by changing the distance between the coupling metal sheet 5 and the antenna floor 2 in the length direction. In summary, the provision of the coupling metal sheet 5 helps to improve the radiation efficiency of the dual band wideband antenna 1000, enhancing the transmission of signals through interaction with the monopole antenna 3. The performance of the dual-band broadband antenna 1000 is improved while maintaining the compactness and the aesthetic property of the dual-band broadband antenna 1000. The coupling metal sheet 5 and the protruding structure 21 arranged on the antenna floor 2 can jointly play a role in adjusting the coupling strength of the monopole antenna 3 and the antenna floor 2, and the resonance frequencies of a plurality of radiation modes can be close to each other through the proper coupling strength, so that a broadband effect is realized.
In an alternative embodiment, to adapt the dual-band wideband antenna 1000 to different installation situations, the dielectric substrate 1 may be a rectangular structure with a regular shape, or the dielectric substrate 1 may be a trapezoid, and the edge of the antenna floor 2 is flush with the outer edge of the dielectric substrate 1. These different shape designs can accommodate different installation environments and space requirements. A regular rectangular dielectric substrate 1 may help simplify the manufacturing process, while a trapezoid dielectric substrate 1 may provide more design flexibility to accommodate specific installation space or aesthetic requirements. The edges of the antenna floor 2 are flush with the outer edges of the dielectric substrate 1, which helps to maintain a clean appearance of the antenna, while also possibly helping to improve the performance of the antenna, since the alignment of the edges may help to reduce reflection and scattering of signals.
In an alternative embodiment, to facilitate the installation of the dual-band wideband antenna 1000, the antenna floors 2 include two antenna floors 2, each antenna floor 2 is disposed on opposite sides of the dielectric substrate 1, each antenna floor 2 is formed with a plurality of short-circuit vias 22, and the short-circuit vias 22 of the two antenna floors 2 correspond to each other. Referring to fig. 5 and 6, the antenna floor 2 is divided into two pieces respectively disposed on opposite sides of the dielectric substrate 1. Which helps to improve the symmetry and balance of the antenna and thus optimize the radiation pattern and performance of the dual band wideband antenna 1000. In addition, the short-circuit via hole 22 can make the antenna floors 2 on two sides fully connected to reduce the generation of interference modes, and meanwhile, the antenna floors 2 on two sides increase the area for disposing other electronic elements, so that the wearable device can realize more complex functions. The design and installation of the high-performance antenna are convenient to realize in a limited space.
In an alternative embodiment, to achieve fine tuning of the dual band wideband antenna 1000, the monopole antenna 3 has an arcuate meander structure. The electrical length of the antenna can be changed by arranging the bending structure, so that the resonant frequency of the antenna can be adjusted. The method for fine tuning the antenna performance is realized by adopting the adjustment of the physical structure, so that the method can adapt to different working frequency bands. The dual-band wideband antenna 1000 is facilitated to achieve a wide bandwidth frequency response while maintaining a small physical size.
The structural principles of the two embodiments in the present solution are specifically described below.
Example 1:
Referring to fig. 1 to 4, the dual band broadband antenna 1000 includes three parts, i.e., a monopole antenna 3, an antenna floor 2, and a coupling metal sheet 5. The monopole antenna 3 is located on the first side of the dielectric substrate 1, and is in a U-shaped folded branch, and the folded form can make the design of the monopole antenna 3 more compact. The lower side of the branch is provided with the feed port 4 for connecting a radio frequency circuit, and the design can excite the branch on the left side and the right side of the feed port 4 respectively, so that the folding branch forms two sections of antennas with different lengths on the left side and the right side respectively under electromagnetic excitation, thereby realizing the introduction of resonance modes in a high frequency band and a low frequency band respectively, realizing the effect of double frequency bands and improving the bandwidth of the antennas. The antenna floor 2 is also positioned on the first side of the dielectric substrate 1, is in the same layer as the monopole antenna 3, is approximately L-shaped, the monopole antenna 3 is positioned in a notch at the upper right corner of the antenna floor 2, a rectangular protruding structure 21 is arranged on the right side floor of the monopole antenna 3, the coupling strength between the right end of the antenna floor 2 and the monopole antenna 3 can be adjusted by changing the distance between the protruding structure 21 and the monopole antenna 3, and the impedance matching is improved. The coupling metal sheet 5 is located on a second side surface opposite to the first side surface of the dielectric substrate 1 and corresponds to the bending part of the monopole antenna 3. By adjusting the distance between the coupling metal sheet 5 and the antenna floor 2 in the length direction, the coupling strength between the monopole antenna 3 and the left end of the antenna floor 2 can be adjusted.
Fig. 7 shows the simulation results of S11 of the dual-band wideband antenna 1000 in the present embodiment, in which the dotted line a represents the reflection coefficient curve when the protruding structure 21 on the antenna floor 2 and the coupling metal sheet 5 are not provided, the dotted line b represents the reflection coefficient curve when the protruding structure 21 on the antenna floor 2 is provided but the coupling metal sheet 5 is not provided, and the solid line c represents the reflection coefficient curve of the antenna after the protruding structure 21 on the antenna floor 2 and the coupling metal sheet 5 are provided. As can be seen from the figure, with the addition of the protruding structures 21 on the antenna floor 2 and the coupling metal sheet 5, the resonance modes of the curves at the high frequency band gradually get closer, and the impedance matching improves. Finally, the designed dual-band broadband antenna 1000 can cover 2.37-2.88 GHz in a low frequency band and 4.42-7.26 GHz in a high frequency band, and has a broadband effect in both frequency bands, wherein the relative bandwidths are 19.4% and 48.6% respectively. The wireless power supply device can cover 2.4GHz, 5GHz and 6GHz frequency bands related in WiFi 1-WiFi 7 technology, and has the advantages of low headroom, simple feed structure, high working efficiency and small overall size. Fig. 8 is an efficiency curve of the simulation of the dual-band wideband antenna 1000 in the present solution, where the efficiency of the antenna in the working band is stable and better than-1 dB, so as to meet the practical application requirements.
Example 2:
Referring to fig. 5 to 6, the dual band broadband antenna 1000 includes three parts of a monopole antenna 3, an antenna floor 2, and a coupling metal sheet 5. The dual-band broadband antenna 1000 includes three parts of a monopole antenna 3, an antenna floor 2, and a coupling metal sheet 5. The monopole antenna 3 is located the first side of dielectric substrate 1, and the shape is the folding branch of a U-shaped to all be formed with the arc structure of buckling at two sections branches, so that finely tune monopole antenna 3, folding form can make monopole antenna 3's design compacter. The lower side of the branch is provided with the feed port 4 for connecting a radio frequency circuit, and the design can excite the branch on the left side and the right side of the feed port 4 respectively, so that the folding branch forms two sections of antennas with different lengths on the left side and the right side respectively under electromagnetic excitation, thereby realizing the introduction of resonance modes in a high frequency band and a low frequency band respectively, realizing the effect of double frequency bands and improving the bandwidth of the antennas. The two antenna floors 2 are respectively located on a first side surface and an opposite second side surface of the dielectric substrate 1, the antenna floors 2 on two sides are identical in shape and are fully connected through the short-circuit via hole 22 in the middle. The antenna floor 2 is substantially in the shape of a broken corner quadrilateral, and is suitable for being mounted in the legs of the smart glasses. The monopole antenna 3 is located in the notch in the upper right corner of the antenna floor 2, and a rectangular protrusion is arranged on the right floor of the monopole antenna 3, so as to adjust the coupling strength between the right antenna floor 2 and the monopole antenna 3. The coupling metal sheet 5 is located on the second side of the dielectric substrate 1 and is correspondingly arranged at the bending part of the monopole antenna 3, and the coupling strength between the monopole antenna 3 and the left antenna floor 2 can be adjusted by adjusting the distance between the coupling metal sheet 5 and the antenna floor 2.
Fig. 9 is a voltage standing wave ratio physical test result of embodiment 2 of the present solution, and it can be seen from the graph that standing wave ratios of the dual-band wideband antenna 1000 in the 2.4GHz, 5GHz and 6GHz frequency bands are all closer to 1, which means that reflection of the dual-band wideband antenna 1000 is smaller, matching performance is better, and practical application requirements of products can be satisfied.
In summary, the present solution can excite the working modes of the monopole antenna 3 and the antenna floor 2 simultaneously through one feed port 4, and the coupling strength and impedance matching between these working modes can be controlled by adjusting the size of the monopole antenna 3, the size of the antenna floor 2, the position of the coupling metal sheet 5 and the size of the protruding structure 21. The antenna can cover 2.37-2.88 GHz in a low frequency band, and can cover 4.42-7.26 GHz in a high frequency band, the relative bandwidths are 19.4% and 48.6%, and the antenna has a broadband effect. In addition, the dual-band wideband antenna 1000 has a low headroom, the whole volume of the antenna is only 44.5×5.5×0.8mm3, and the antenna is long and narrow in shape, and is very suitable for products such as intelligent glasses. And the feed structure in the scheme does not contain lumped elements, so that the feed structure has higher working efficiency.
The invention also provides a wearable device, which comprises the dual-band broadband antenna 1000, and specifically, the wearable device can be an electronic device such as intelligent glasses and intelligent watches. The specific structure of the dual-band wideband antenna 1000 refers to the above embodiments, and since the wearable device adopts all the technical solutions of all the embodiments, at least the wearable device has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
The foregoing description is only exemplary embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. A dual band wideband antenna comprising:
A dielectric substrate;
the antenna floor is arranged on one side of the medium substrate, the antenna floor is of an L-shaped structure, and a notch is formed in the projection position of the antenna floor relative to the medium substrate;
The monopole antenna is connected to the dielectric substrate and positioned at the notch position, and comprises a first section and a second section, and the length of the first section is greater than that of the second section;
the feed port is connected with the monopole antenna and the antenna floor, and is arranged at the joint of the first section and the second section.
2. The dual band wideband antenna of claim 1, wherein said monopole antenna is U-shaped and is disposed transversely to said notch along a length of said antenna floor, said feed port being disposed on a side of said monopole antenna adjacent said antenna floor.
3. The dual band wideband antenna of claim 2, wherein the antenna floor has a length direction near one end of the monopole antenna, and a protruding structure extending along a width direction of the antenna floor, the protruding structure being coupled to the monopole antenna.
4. A dual-band wideband antenna as claimed in any one of claims 1 to 3 further comprising a coupling metal sheet disposed on a side of the dielectric substrate facing away from the antenna floor, the coupling metal sheet corresponding to a projection position of the monopole antenna on the dielectric substrate.
5. The dual band wideband antenna of claim 4 wherein said dielectric substrate is a regularly shaped rectangular structure, said antenna floor edge being flush with an outer edge of said dielectric substrate.
6. The dual band wideband antenna of claim 4 wherein the dielectric substrate is a trapezoid and the antenna floor edge is flush with the outer edge of the dielectric substrate.
7. The dual band wideband antenna of claim 6, wherein said antenna floor comprises two pieces, each of said antenna floors being disposed on opposite sides of said dielectric substrate.
8. The dual band wideband antenna of claim 7, wherein each of said antenna floors is formed with a plurality of shorting vias, the shorting vias of two of said antenna floors corresponding to each other.
9. The dual band wideband antenna of claim 7, wherein said monopole antenna has an arcuate meander configuration.
10. A wearable device comprising a dual band wideband antenna according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411469060.8A CN119231174A (en) | 2024-10-21 | 2024-10-21 | Dual-band broadband antenna and wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411469060.8A CN119231174A (en) | 2024-10-21 | 2024-10-21 | Dual-band broadband antenna and wearable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119231174A true CN119231174A (en) | 2024-12-31 |
Family
ID=94047094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411469060.8A Pending CN119231174A (en) | 2024-10-21 | 2024-10-21 | Dual-band broadband antenna and wearable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119231174A (en) |
-
2024
- 2024-10-21 CN CN202411469060.8A patent/CN119231174A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8253633B2 (en) | Multi-band monopole antenna for a mobile communications device | |
| US7136025B2 (en) | Dual-band antenna with low profile | |
| CN1922758B (en) | Diversity antenna arrangement | |
| US8294620B2 (en) | Integrated dual-band antenna for laptop applications | |
| US7443350B2 (en) | Embedded multi-mode antenna architectures for wireless devices | |
| TW567646B (en) | Multi-band planar antenna and portable terminal | |
| US6844853B2 (en) | Dual band antenna for wireless communication | |
| CN113540787B (en) | Antenna unit and electronics | |
| JP2006187036A (en) | antenna | |
| JP2007535836A (en) | Integrated multiband antenna for computing devices | |
| CN102064384A (en) | Ultra-wideband antenna | |
| TWI724635B (en) | Antenna structure and electronic device | |
| CN201319403Y (en) | Multi-band Monopole Antenna with Improved HAC Characteristics | |
| TW201843877A (en) | Mobile device and antenna structure | |
| US7230571B2 (en) | Quadband antenna for portable devices | |
| KR20090096914A (en) | Planar folded monopole antenna | |
| US20100039328A1 (en) | Annular antenna | |
| EP1324423A1 (en) | Low-cost printed omni-directional monopole antenna for ultra-wideband in mobile applications | |
| CN2911984Y (en) | Double-frequency PIFA antenna adopting loop type oscillator | |
| Aziz et al. | Printed 5G MIMO antenna arrays in smartphone handset for LTE bands 42/43/46 applications | |
| CN119231174A (en) | Dual-band broadband antenna and wearable device | |
| CN2511013Y (en) | Concealed multi-frequency antenna for mobile phone | |
| Kang et al. | Simple small‐size coupled‐fed uniplanar PIFA for multiband clamshell mobile phone application | |
| CN214542533U (en) | Embedded antenna in screen inner structure | |
| CN114583448B (en) | A compact three-unit terminal MIMO antenna array for 5G mobile communications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |