CN114094325A - UWB dual-antenna structure - Google Patents
UWB dual-antenna structure Download PDFInfo
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- CN114094325A CN114094325A CN202111287144.6A CN202111287144A CN114094325A CN 114094325 A CN114094325 A CN 114094325A CN 202111287144 A CN202111287144 A CN 202111287144A CN 114094325 A CN114094325 A CN 114094325A
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- 239000000758 substrate Substances 0.000 claims abstract description 18
- 230000009977 dual effect Effects 0.000 claims description 19
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a UWB double-antenna structure, and relates to the technical field of antennas. The medium substrate comprises a first plane, a second plane and a fold line connecting the first plane and the second plane, wherein the first plane and the second plane form a preset included angle; and a first antenna and a second antenna disposed on the dielectric substrate. The UWB double-antenna structure provided by the invention can be arranged on a label product or an emitter end for use according to requirements, can be used as a receiving end when being arranged on the label product, and can be used as an emitting end when being arranged on the emitter end, and does not need to be designed respectively.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a UWB dual-antenna structure.
Background
UWB is a carrier-free communication technique for transmitting data using narrow pulses of non-sinusoidal waves on the order of nanoseconds to microseconds, and has been commonly used in indoor positioning in recent years to provide a highly accurate positioning effect. In a UWB positioning scenario, a plurality of positioning base stations with known coordinates are usually arranged in a building, and an object to be positioned carries a positioning tag, and the positioning tag transmits pulses at a certain frequency and continuously performs distance measurement with a plurality of base stations, so as to determine the position of the positioning tag through a distance measurement algorithm. For example, the door lock is provided with the UWB, and when a family member approaches the door, the door is automatically unlocked; for example, the UWB is arranged on the vehicle, and the vehicle is automatically unlocked when a vehicle owner approaches the vehicle; or the mobile phone can be used as an intelligent remote controller on the mobile phone, when the mobile phone points to a product with the UWB tag, the mobile phone automatically pops out to control the picture of the UWB tag product and remotely control the function of the UWB tag product, and the like. The traditional UWB antenna design can only be used as a single-frequency UWB tag product. Separate designs are required for use on label products and transmitter ends.
It is therefore of great importance to provide a UWB antenna design that can be used both on the tag product and at the transmitter end.
Disclosure of Invention
In order to solve at least one of the above-mentioned problems in the background art, the present invention provides a dual UWB antenna structure, which can be installed on a tag product or a transmitter end for use as needed, and can be used as a receiving end when installed on the tag product and as a transmitting end when installed on the transmitter end, without being separately designed.
The specific technical scheme provided by the invention is as follows:
a UWB dual antenna architecture comprising:
the medium substrate comprises a first plane, a second plane and a fold line connecting the first plane and the second plane, wherein the first plane and the second plane form a preset included angle;
the antenna comprises a first antenna, a second antenna, a first zigzag portion, a second zigzag portion and a third zigzag portion, wherein the surface of the first antenna is provided with a first groove, a second groove, the first zigzag portion and the second zigzag portion surround the first groove, the third zigzag portion surrounds the second groove, the first zigzag portion, the second zigzag portion and the third zigzag portion are respectively connected with a first connecting section, the first connecting section is provided with a first feeding point, and the third zigzag portion is provided with a first grounding feeding point; the first groove, the first zigzag portion, the second zigzag portion and the first connecting section are arranged on the first plane, and the second groove and the third zigzag portion are arranged on the first plane and the second plane;
the surface of the second antenna is provided with a third groove, a fourth zigzag portion and a fifth zigzag portion which surround the third groove, and a sixth zigzag portion which surrounds the fourth groove, the fourth zigzag portion, the fifth zigzag portion and the sixth zigzag portion are respectively connected with a second connecting section, the second connecting section is provided with a second feeding point, and the sixth zigzag portion is provided with a second grounding feeding point; the third groove, the fourth zigzag portion, the fifth zigzag portion and the second connecting section are arranged on the first plane, and the fourth groove and the sixth zigzag portion are arranged on the first plane and the second plane;
wherein the second trench and the fourth trench are different in size.
Optionally, the first meandering portion is an L-shaped structure, and the first feeding point, the first connection segment, the first meandering portion, and the third meandering portion are connected to generate a first current path of a first operating frequency band;
the second zigzag portion is of an L-shaped structure, and the first feeding point, the first connecting section, the second zigzag portion and the third zigzag portion are connected to generate a second current path of a second operating frequency band;
wherein the frequency of the first operating band is lower than the frequency of the second operating band.
Optionally, an end of the second meandering portion away from the first feeding point is in a trapezoid structure, and an end of the fifth meandering portion away from the second feeding point is in a rectangular structure.
Optionally, the first feeding point and the second feeding point adopt feeding patches; and the first grounding feed point and the second grounding feed point adopt grounding surface patches.
Optionally, the second groove and the fourth groove are both J-shaped structures, the second groove includes a first rectangular slit structure and a first L-shaped slit structure, the fourth groove includes a second rectangular slit structure and a second L-shaped slit structure, and the folding line passes through the first rectangular slit structure and the second rectangular slit structure; the first rectangular slit structure and the second rectangular slit structure are different in size.
Optionally, the first feeding point and the first ground feeding point are disposed on two sides of the slot of the first L-shaped slot structure; the second feeding point and the second grounding feeding point are arranged on two sides of the second L-shaped slot structure.
Optionally, the first trench and the third trench are both trapezoid-like structures having openings;
optionally, the first trench and the third trench are symmetrical to each other; the first connecting section and the second connecting section are symmetrical to each other.
Optionally, at least one bending hole is formed on the folding line.
Optionally, the dielectric substrate is a substrate of any one of a PCB antenna, an FPC antenna, and an LDS antenna.
According to the UWB double-antenna structure provided by the invention, the first antenna and the second antenna are arranged, so that the UWB double-antenna structure can be arranged on a label product or a transmitter end to be used according to the requirement, and when the UWB double-antenna structure is arranged on the label product, any one of the first antenna and the second antenna works to be used as a receiving end; when installed on the transmitter side, the first antenna and the second antenna need to operate simultaneously to serve as the transmitter side.
The UWB double-antenna structure provided by the invention does not need to be designed respectively according to different application scenes arranged on a label product or on a transmitter end, so that the cost is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dual UWB antenna structure provided by the present invention;
fig. 2 is a signal return loss effect diagram of the UWB dual antenna structure provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the dual UWB antenna structure provided by the present invention may generally include a dielectric substrate 1, a first antenna 2 and a second antenna 3. The dielectric substrate 1 includes a first plane 11, a second plane 12, and a folding line 13. The fold line 13 is a connecting line connecting the first plane 11 and the second plane 12, which may be virtual. The first plane 11 and the second plane 12 form a predetermined included angle therebetween. The predetermined included angle may range from 0-150. The dielectric substrate may be a dielectric substrate, or may be a substrate of any of a PCB antenna, an FPC antenna, and an LDS antenna. In fig. 1, for convenience of illustration, the predetermined angle is 0 °. In fact, in a preferred embodiment, the predetermined angle is 90 °, which has the advantages of easy installation and small space occupation.
The surface of the first antenna 2 is provided with a first groove 21 and a second groove 22. A first meandering portion 23 and a second meandering portion 24 are provided around the first groove 21. A third meandering portion 25 is provided around the second groove 22. The first meandering portion 23, the second meandering portion 24, and the third meandering portion 25 are connected to the first connecting section 26, respectively. The first connection section 26 is provided with a first feeding point 27. A first ground feed 28 is provided on the third meander portion 25. That is, the first meandering section 23, the second meandering section 24, the third meandering section 25, the first connection section 26, and the first ground feed 28 collectively constitute a radiating element of the first antenna 2. Wherein the first groove 21, the first meandering portion 22, the second meandering portion 24, and the first connecting section 26 are provided on the first plane 11. The second groove 22 and the third meandering section 25 are provided on both the first plane 11 and the second plane 12 across the folding line 13.
The surface of the second antenna 3 is provided with a third groove 31 and a fourth groove 32. A fourth meandering portion 33 and a fifth meandering portion 34 are provided around the third groove 31. A sixth curved portion 35 is provided around the fourth groove 32. The fourth bend 33, the fifth bend 34, and the sixth bend 35 are connected to the second connecting section 36, respectively. The second connection section 36 is provided with a second feeding point 37. A second ground feed point 38 is provided on the sixth bend 35. The third groove 31, the fourth bend 33, the fifth bend 34 and the second connecting section 36 are provided on the first plane 11, and the fourth groove 32 and the sixth bend 35 are provided on both the first plane 11 and the second plane 12 across the folding line 13. That is, the fourth meandering section 33, the fifth meandering section 34, the sixth meandering section 35, the second connection section 36, and the second ground feed 38 together constitute a radiating element of the second antenna 3. Wherein the second trenches 22 and the fourth trenches 32 are different in size. It is to be understood that the dimensions herein refer to the size of the gap of the second trench 22 (including its length and width).
When the UWB dual-antenna structure is used, the first groove 21 and the second groove 22 are designed, and frequency trap can be carried out on a radiating unit through the groove structure. The first trench 21 and the second trench 22 may be used to perform notch processing on signal frequencies other than the radio frequency signal frequency for which the radiation element of the first antenna 2 is responsible, so as to improve the radiation efficiency of the first antenna 2. The third groove 31 and the fourth groove 32 may be used to perform notch processing on signal frequencies other than the rf signal frequency for which the radiation unit of the second antenna 3 is responsible, so as to improve the radiation efficiency of the second antenna 3.
Specifically, the first meandering portion 23 has an L-shaped structure. The first feeding point 27, the first connection section 26, the first meander 23 and the third meander 25 are connected for generating a first current path for a first operating frequency band. The second meander 24 is in an L-like structure, and the first feeding point 27, the first connection section 26 and said second and third meander 24, 25 are connected for generating a second current path for a second operating frequency band. Wherein the frequency of the first operating frequency band is lower than the frequency of the second operating frequency band. In one embodiment, as shown in fig. 2, namely, the first operating frequency band is CH5(6.5GHz +/-250MHz), and the second operating frequency band is CH9(7.9GHz +/-250MHz), so as to realize a UWB dual antenna structure and meet the requirement of dual frequency bands of CH5& CH 9.
According to the UWB dual-antenna structure provided by the invention, the first feeding point 27 and the second feeding point 37 adopt feeding patches; the first and second ground feeds 28, 38 employ ground plane patches. Optionally, the ground patch and the feed patch are both made of microstrip lines, wherein the impedance of the feed patch is adjusted and selected according to actual needs, and the dielectric substrate 1 is made of flame-retardant material with grade FR-4 or polytetrafluoroethylene material.
Alternatively, an end of the second meandering section 24 away from the first feeding point 27 has a trapezoidal structure. An end of the fifth meandering section 34 remote from the second feeding point 37 has a rectangular structure. The second trench 22 and the fourth trench 32 are both J-shaped structures. The second trench 22 includes a first rectangular slit structure 221 and a first L-shaped slit structure 222. The fourth trench 32 includes a second rectangular slot structure 321 and a second L-shaped slot structure 322. The first feeding point 27 and the first ground feeding point 28 are disposed at both sides of the slot of the first L-shaped slot structure 222; a second feeding point 37 and a second ground feeding point 38 are arranged on both sides of the slot of the second L-shaped slot structure 322. Optionally, the first trench 21 and the third trench 31 are both trapezoid-like structures having openings, and the length of the opening of the trapezoid-like structure of the third trench 31 is greater than the length of the opening of the trapezoid-like structure of the first trench 21. The folding line 13 passes through the first rectangular slit structure 221 and the second rectangular slit structure 321. The first rectangular slot structure 221 and the second rectangular slot structure 321 are different in size.
In the UWB dual-antenna structure provided by the present invention, the dielectric substrate 1 may be any one of a PCB antenna, an FPC antenna, and an LDS antenna. The dielectric substrate 1 may be bent by the fold line 13 so that the first plane 11 and the second plane 12 form a predetermined included angle, and the predetermined included angle may be any angle. Optionally, the included angle is 90 ° so that the antenna can be conveniently installed in the device, and is more suitable for installation at the corner of the device, so that the occupied space of the antenna can be reduced. The fold line 13 is provided with at least one fold hole 14. The design of the bending holes 14 enables the dielectric substrate 1 to be bent more easily, and damage to the dielectric substrate 1 during bending is avoided.
According to the UWB dual-antenna structure provided by the invention, the first groove 21 and the third groove 31 are mutually symmetrical; the first and second connecting sections 26 and 36 are symmetrical to each other.
According to the UWB dual-antenna structure provided by the invention, the first antenna 2 and the second antenna 3 are designed similarly, so that the first antenna 2 and the second antenna 3 can be independently used as receiving ends on a label product, and when the UWB dual-antenna structure is required to be used as a transmitting end on a transmitter end, the first antenna 2 and the second antenna 3 can work simultaneously. As shown in fig. 2, the dual UWB antenna structure provided by the present invention can simultaneously satisfy the usage conditions of dual frequency ch5& ch9, and has a return loss S11, for example, ch 5M 1/2/3 three kinds of dia, S11< -6 dB; take ch 9M 4/5/6 three GEN as an example, S11< -6 dB.
The UWB double-antenna structure provided by the invention does not need to be designed respectively according to different application scenes arranged on a label product or on a transmitter end, so that the cost is saved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A dual UWB antenna structure comprising:
the medium substrate comprises a first plane, a second plane and a fold line connecting the first plane and the second plane, wherein the first plane and the second plane form a preset included angle;
the antenna comprises a first antenna, a second antenna, a first zigzag portion, a second zigzag portion and a third zigzag portion, wherein the surface of the first antenna is provided with a first groove, a second groove, the first zigzag portion and the second zigzag portion surround the first groove, the third zigzag portion surrounds the second groove, the first zigzag portion, the second zigzag portion and the third zigzag portion are respectively connected with a first connecting section, the first connecting section is provided with a first feeding point, and the third zigzag portion is provided with a first grounding feeding point; the first groove, the first zigzag portion, the second zigzag portion and the first connecting section are arranged on the first plane, and the second groove and the third zigzag portion are arranged on the first plane and the second plane;
the surface of the second antenna is provided with a third groove, a fourth zigzag portion and a fifth zigzag portion which surround the third groove, and a sixth zigzag portion which surrounds the fourth groove, the fourth zigzag portion, the fifth zigzag portion and the sixth zigzag portion are respectively connected with a second connecting section, the second connecting section is provided with a second feeding point, and the sixth zigzag portion is provided with a second grounding feeding point; the third groove, the fourth zigzag portion, the fifth zigzag portion and the second connecting section are arranged on the first plane, and the fourth groove and the sixth zigzag portion are arranged on the first plane and the second plane;
wherein the second trench and the fourth trench are different in size.
2. The UWB dual antenna structure of claim 1,
the first meandering section is of an L-shaped structure, and the first feeding point, the first connection section, the first meandering section, and the third meandering section are connected to generate a first current path of a first operating frequency band;
the second zigzag portion is of an L-shaped structure, and the first feeding point, the first connecting section, the second zigzag portion and the third zigzag portion are connected to generate a second current path of a second operating frequency band;
wherein the frequency of the first operating band is lower than the frequency of the second operating band.
3. The UWB dual antenna structure according to claim 2, wherein an end of the second meandering portion away from the first feeding point has a trapezoidal structure, and an end of the fifth meandering portion away from the second feeding point has a rectangular structure.
4. The UWB dual antenna structure of claim 3, wherein the first and second feed points employ feed patches; and the first grounding feed point and the second grounding feed point adopt grounding surface patches.
5. The UWB dual antenna structure of claim 3 wherein the second trench and the fourth trench are both J-shaped structures, the second trench includes a first rectangular slot structure and a first L-shaped slot structure, the fourth trench includes a second rectangular slot structure and a second L-shaped slot structure, the fold line passes through the first rectangular slot structure and the second rectangular slot structure; the first rectangular slit structure and the second rectangular slit structure are different in size.
6. The UWB dual antenna structure of claim 5 wherein the first feed point and first ground feed point are disposed on both sides of the slot of the first L-shaped slot structure; the second feeding point and the second grounding feeding point are arranged on two sides of the second L-shaped slot structure.
7. The UWB dual antenna structure of claim 6 wherein the first and third grooves are each a trapezoid-like structure having an opening, and wherein a length of the opening of the trapezoid-like structure of the third groove is greater than a length of the opening of the trapezoid-like structure of the first groove.
8. The UWB dual antenna structure according to any one of claims 1-7, wherein the first and third trenches are symmetrical to each other; the first connecting section and the second connecting section are symmetrical to each other.
9. The dual UWB antenna structure according to any one of claims 1 to 7, wherein the folding line is provided with at least one folding hole.
10. The dual UWB antenna structure according to any one of claims 1 to 7, wherein the dielectric substrate is a substrate of any one of a PCB antenna, a FPC antenna, and a LDS antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287144.6A CN114094325B (en) | 2021-11-02 | 2021-11-02 | UWB double-antenna structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287144.6A CN114094325B (en) | 2021-11-02 | 2021-11-02 | UWB double-antenna structure |
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| CN114094325A true CN114094325A (en) | 2022-02-25 |
| CN114094325B CN114094325B (en) | 2023-08-29 |
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| JP2008259250A (en) * | 2008-07-31 | 2008-10-23 | Fractus Sa | Integrated circuit package including micro antenna |
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2021
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| Title |
|---|
| CARLA R. MEDEIROS ET AL.: "Compact Tapered Slot UWB Antenna With WLAN Band Rejection", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》, vol. 8 * |
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| CN114094325B (en) | 2023-08-29 |
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