CN107394374A - Ultra-wideband monopole antenna with double trap characteristics - Google Patents
Ultra-wideband monopole antenna with double trap characteristics Download PDFInfo
- Publication number
- CN107394374A CN107394374A CN201710523025.3A CN201710523025A CN107394374A CN 107394374 A CN107394374 A CN 107394374A CN 201710523025 A CN201710523025 A CN 201710523025A CN 107394374 A CN107394374 A CN 107394374A
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- Prior art keywords
- radiation patch
- medium substrate
- lag
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- antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- 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
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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Abstract
The invention discloses the ultra-wideband monopole antenna with double trap characteristics, including earth plate, medium substrate, feeding network and radiation patch, the thickness of the medium substrate is 0.8mm, earth plate is located at medium substrate side, the opposite side of medium substrate is provided with feeding network and radiation patch, the left and right sides on the top of the radiation patch is symmetrical to be provided with chamfering, the first U-lag is etched with the middle part of radiation patch, second U-lag and convex slot, first U-lag stand upside down set and with the convex slot integrally connected, rectangular configuration is relatively symmetrically provided with left and right sides of the bottom of radiation patch, arcuate structure is provided between rectangular configuration, the earth plate is equal with the width of the medium substrate.Inventive antenna produces trap characteristic at 3.6GHz and 5.5GHz two sections of frequency ranges, realize WiMAX (effective working frequency range is 3.3 3.7GHz) and WLAN (effective frequency range is 5.2 5.8GHz) stopband characteristic, it is suppressed that their interference to radio ultra wide band system.
Description
Technical field
The present invention relates to antenna technical field, is to be related to the ultra-wideband monopole day with double trap characteristics specifically
Line.
Background technology
In recent years, Development of Wireless Communications is very rapid, associated wireless communication technology, communication system, communication equipment
Deng also as the focus of research.Plus making rapid progress for wearable device and technology, applied to wireless such as centered on human body
The wearable antenna in the fields such as communication system, implantable medical device is increasingly taken seriously.But with based on wireless snowslide
The appearance of formula application, the anxiety of band resource, band efficiency are low, bandwidth of operation is narrow, the working band of distinct device or antenna
The problems such as overlapping can not similarly be ignored, and this all has influence on the reliability of antenna and the practicality of wireless communication system.
2002, FCC (FCC) issued new wide-band communication system specification, it is therefore an objective to alleviates frequency
Anxiety with resource and the demand of reply high-speed communication, 3.1-10.6GHz frequency allocations are used to ultra-wideband communications, broadband
And super-broadband tech will be widely used in the fields such as industry, medical science, domestic life.However, the working frequency range of ultra-wideband antenna is with showing
The narrowband systems deposited, as Worldwide Interoperability for Microwave accesses (WiMAX 3.SGHz) and WLAN (WLAN 5.2/5.8GHz) frequency range weight
It is folded, thus easily produce interference.In order to filter out these interference, it is necessary to add wave filter in uwb systems, this is undoubtedly added into
Sheet and system complexity.In order to overcome this defect, in ultra-wideband systems, the antenna with trap characteristic just seems particularly heavy
Will.By carrying out certain improvement to traditional UWB antennas, make antenna itself that there is filter function, be formed trap antenna.Mesh
The method of preceding conventional generation trap is cutting or addition matching minor matters structure in radiation patch.But these methods are typically only capable to
Produce a stopband or structure is complex, not easy processing.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided a kind of ultra wide band with double trap characteristics
Monopole antenna, the antenna produce trap characteristic at 3.6GHz and 5.5GHz two sections of frequency ranges, realize WiMAX (effective works
It is 3.3-3.7GHz to make frequency range) and WLAN (effective frequency range is 5.2-5.8GHz) stopband characteristic, it is suppressed that they are to ultra wide band
The interference of system.The antenna size is small, it is simple in construction, be easy to make, be nearest electromagnetism neck suitable for wireless communication system and equipment
Domain, the focus of wearable device area research, there is great development prospect.
The purpose of the present invention is achieved through the following technical solutions：
Ultra-wideband monopole antenna with double trap characteristics, including earth plate, medium substrate, feeding network and radiation patch
Piece, the thickness of the medium substrate is 0.8mm, and earth plate is located at medium substrate side, and the opposite side of medium substrate is provided with feed
Network and radiation patch, the left and right sides on the top of the radiation patch is symmetrical to be provided with chamfering, the middle part etching of radiation patch
Have the first U-lag, the second U-lag and a convex slot, first U-lag stand upside down set and with the convex slot integrally connected, spoke
Penetrate at left and right sides of the bottom of paster and be relatively symmetrically provided with rectangular configuration, arcuate structure, the earth plate are provided between rectangular configuration
It is equal with the width of the medium substrate.
The specification of the medium substrate is 36mm × 33mm.
The relative dielectric constant of the medium substrate is 4.4, loss tangent value 0.02.
The width of the earth plate is 16mm.
The width of first U-lag and the second U-lag is respectively 12mm and 9mm.
Compared with prior art, beneficial effect caused by technical scheme is：
1. inventive antenna is in 3.1-11GHz (except 3.3-3.75GHz frequency ranges and 4.27-5.6GHz frequency ranges) frequency range
Interior return loss is less than -10dB, and has good radiance, meets requirement of the radio ultra wide band system to Antenna Design.
2. a width of 3.10-11.12GHz of inventive antenna band, in 3.3-3.75GHz frequency ranges and 4.27-5.6GHz frequency ranges
Trap characteristic is produced, except this frequency range, antenna return loss in effective bandwidth is less than -10dB, voltage standing wave ratio VSWR<2.
Band falls into characteristic caused by 3.3-4.5GHz frequency ranges, can suppress well WiMAX (effective working frequency range is 3.3-3.7GHz) and
The narrowband systems such as WLAN (effective working frequency range is 5.2-5.8GHz) are to interference caused by radio ultra wide band system, so as to improve the day
The practicality of line.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the side structure schematic view of the present invention.
Fig. 3 is the physical dimension schematic diagram of the specific embodiment of the invention.
Fig. 4 is echo of the radiation patch in the case where having the first U-lag, the second U-lag and convex slot status in inventive antenna
Simulation result is lost.
Fig. 5 is return loss simulation result of the radiation patch in the case where whetheing there is any slot status in inventive antenna.
Fig. 6 is the return loss emulation that radiation patch only has under the first U-lag and the second U-lag state in inventive antenna
As a result.
Fig. 7 (a), Fig. 7 (b) and Fig. 7 (c) are inventive antenna respectively respectively in 3.5GHz, 7.5GHz and 9.5GHz tri-
Antenna pattern at frequency.
Reference：1- earth plate 2- medium substrate 3- feeding network 4- radiation patch the first U-lags of 5- 6- second
U-lag 7- convex slots
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1 to Figure 3, there is the ultra-wideband monopole antenna of double trap characteristics, including earth plate 1, medium substrate
2nd, feeding network 3 and radiation patch 4, medium substrate 2 are made by conventional FR4 (epoxy resin) plate material, relative dielectric constant
For 4.4, loss tangent value 0.02, thickness 0.8mm, the shape of antenna as shown in figure 1, antenna using side feedback mode, input
Impedance is 50 Ω.
Antenna in the present embodiment is to be produced on the medium that specification is 36mm × 33mm × 0.8mm by engraving method
On substrate 2, earth plate 1 etches is etched with feeding network 3 and radiation patch in the side of medium substrate 2, the opposite side of medium substrate 2
4, feeding network 3 is made up of microstrip line, and the present embodiment is fed using 50 Ω microstrip lines, earth plate 1 be rectangular configuration and with
Medium substrate 2 is wide, and width is 16mm, and the first U-lag 5, the second U-lag 6 and convex slot 7 are etched with radiation patch 4, the
One U-lag 5, which stands upside down, to be set and in the middle part of it with the integrally connected of convex slot 7, relative in the left and right sides on the top of radiation patch 4 in addition
Title is provided with chamfering, and rectangular configuration is relatively symmetrically provided with the left and right sides of the bottom of radiation patch 4, arc is provided between rectangular configuration
Shape structure.
It is illustrated in figure 3 specific size of the inventive antenna after optimization design, parameter such as following table：
| Identify character | Size | Identify character | Size | |
| w | 16mm | d1 | 1mm | |
| l | 32mm | d2 | 6mm | |
| wd | 1.5mm | d3 | 9mm | |
| l1 | 12mm | d4 | 5mm | |
| h1 | 11mm | d5 | 0.5mm | |
| h2 | 20mm | d6 | 1mm | |
| h5 | 11.5mm | d7 | 2.5mm | |
| w1 | 3mm | d8 | 2mm |
By simulation analysis, it is known that the beamwidth of antenna is 3.10-11.12GHz, in 3.3-3.75GHz frequency ranges and 4.27-
5.6GHz frequency ranges produce trap characteristic, and except this frequency range, antenna return loss in effective bandwidth is less than -10dB, voltage standing wave ratio
VSWR<2.Characteristic is fallen into band caused by 3.3-4.5GHz frequency ranges, suppressing WiMAX well, (effective working frequency range is 3.3-
3.7GHz) and the narrowband systems such as WLAN (effective working frequency range is 5.2-5.8GHz) are to interference caused by radio ultra wide band system, so as to
Improve the practicality of the antenna.
Antenna related parameters are optimized, it is 3.10-11GHz to finally give the effective broadband of antenna.It can obtain echo damage
The simulation results such as consumption, and carried out comparative analysis with the antenna without fluting.
As can be seen from Figure 4, when aerial band first U-lag 5, the second U-lag 6 and convex slot 7,3.6GHz's and 5.5GHz
Trap characteristic is produced at two sections of frequency ranges, realizing WiMAX (effective working frequency range is 3.3-3.7GHz) and WLAN, (effective frequency range is
Stopband characteristic 5.2-5.8GHz), it is suppressed that their interference to radio ultra wide band system, and also the beamwidth of antenna is 3.10-11GHz,
Design requirement is reached.
In fig. 5 it can be seen that during without any groove, a width of 3.15-9.9GHz of band of antenna, 4.1-6.35GHz this
Individual frequency range has trap characteristic, without double traps, does not meet design requirement, and highest frequency is only 9.9GHz, does not reach ultra-wide
The 10.6GHz that band requires.
As can be seen from Figure 6, the first U-lag of a band 5 and during the second U-lag 6, a width of 3.1GHz-11.1GHz of band of antenna, symbol
The requirement of ultra wide band is closed, antenna has trap frequency in 3.6GHz and 5.15GHz, is 4.09- in 5.15GHz trap frequency
5.45GHz, WLAN working frequency range is unsatisfactory for, therefore is unsatisfactory for design requirement.
It can be seen that when antenna has the first U-lag 5 and the second U-lag 6 simultaneously, the structure of this two flutings can change patch
The distribution character of electric current on piece, can not only improve high frequency, influence intermediate frequency, and required trap can also be produced near low frequency
Characteristic.Furthermore it is also possible to length, width and two distances slotted by adjusting fluting, are carried out to the frequency range to be suppressed
Regulation.
Further, inventive antenna except band fall into frequency range effective bandwidth in, antenna return loss -10dB with
Under, even up to -21 near 3.3,3.9,5.8, the 8.0GHz frequencies, -25, -37.5, -34dB, reached good impedance
Matching.
Antenna is with a width of 3.5GHz, 7.5GHz and 9.5GHz frequency range it can be seen from Fig. 7 (a), Fig. 7 (b) and Fig. 7 (c)
The antenna pattern in E faces and H faces during work is in respectively the approximate figure of eight and the characteristic close to omnidirectional radiation, meets omnidirectional antennas
The design requirement of line.
To sum up, the antenna is in 3.1-11GHz (except 3.3-3.75GHz frequency ranges and 4.27-5.6GHz frequency ranges) frequency range
Return loss be less than -10dB, and there is good radiance, meet requirement of the radio ultra wide band system to Antenna Design.
The present invention is not limited to embodiments described above.The description to embodiment is intended to describe and said above
Bright technical scheme, above-mentioned embodiment is only schematical, is not restricted.This is not being departed from
In the case of invention objective and scope of the claimed protection, one of ordinary skill in the art may be used also under the enlightenment of the present invention
The specific conversion of many forms is made, these are belonged within protection scope of the present invention.
Claims (5)
1. the ultra-wideband monopole antenna with double trap characteristics, including earth plate, medium substrate, feeding network and radiation patch
Piece, it is characterised in that the thickness of the medium substrate is 0.8mm, and earth plate is located at medium substrate side, medium substrate it is another
Side is provided with feeding network and radiation patch, and the left and right sides on the top of the radiation patch is symmetrical to be provided with chamfering, radiation patch
Middle part be etched with the first U-lag, the second U-lag and convex slot, first U-lag stand upside down set and with the convex slot one
Body connects, and is relatively symmetrically provided with rectangular configuration at left and right sides of the bottom of radiation patch, arcuate structure, institute are provided between rectangular configuration
It is equal with the width of the medium substrate to state earth plate.
2. there is the ultra-wideband monopole antenna of double trap characteristics according to claim 1, it is characterised in that the medium base
The specification of plate is 36mm × 33mm.
3. the ultra-wideband monopole antenna with double trap characteristics according to claim 1 or claim 2, it is characterised in that given an account of
The relative dielectric constant of matter substrate is 4.4, loss tangent value 0.02.
4. there is the ultra-wideband monopole antenna of double trap characteristics according to claim 1, it is characterised in that the earth plate
Width be 16mm.
5. there is the ultra-wideband monopole antenna of double trap characteristics according to claim 1, it is characterised in that the first U
The width of shape groove and the second U-lag is respectively 12mm and 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523025.3A CN107394374A (en) | 2017-06-30 | 2017-06-30 | Ultra-wideband monopole antenna with double trap characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523025.3A CN107394374A (en) | 2017-06-30 | 2017-06-30 | Ultra-wideband monopole antenna with double trap characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107394374A true CN107394374A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710523025.3A Pending CN107394374A (en) | 2017-06-30 | 2017-06-30 | Ultra-wideband monopole antenna with double trap characteristics |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080029594A (en) * | 2006-09-29 | 2008-04-03 | 한국전자통신연구원 | Uwb antenna having frequency notch by parasitic strip |
| CN104900996A (en) * | 2015-04-30 | 2015-09-09 | 天津大学 | Ultra wide band monopole antenna with trap characteristic |
| CN104993242A (en) * | 2015-06-18 | 2015-10-21 | 华南理工大学 | High-common-mode-rejection high-resistance-band differential ultra-wideband SIR slot antenna |
| CN105024168A (en) * | 2015-06-15 | 2015-11-04 | 华南理工大学 | Reconfigurable two-notch ultra-wideband antenna |
| CN106025528A (en) * | 2016-06-30 | 2016-10-12 | 天津大学 | Broadband monopole antenna having multi-trapped wave characteristic |
-
2017
- 2017-06-30 CN CN201710523025.3A patent/CN107394374A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080029594A (en) * | 2006-09-29 | 2008-04-03 | 한국전자통신연구원 | Uwb antenna having frequency notch by parasitic strip |
| CN104900996A (en) * | 2015-04-30 | 2015-09-09 | 天津大学 | Ultra wide band monopole antenna with trap characteristic |
| CN105024168A (en) * | 2015-06-15 | 2015-11-04 | 华南理工大学 | Reconfigurable two-notch ultra-wideband antenna |
| CN104993242A (en) * | 2015-06-18 | 2015-10-21 | 华南理工大学 | High-common-mode-rejection high-resistance-band differential ultra-wideband SIR slot antenna |
| CN106025528A (en) * | 2016-06-30 | 2016-10-12 | 天津大学 | Broadband monopole antenna having multi-trapped wave characteristic |
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| PB01 | Publication | ||
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Application publication date: 20171124 |