CN106876981A - A kind of UWB antennas based on EBG structures - Google Patents
A kind of UWB antennas based on EBG structures Download PDFInfo
- Publication number
- CN106876981A CN106876981A CN201510938598.3A CN201510938598A CN106876981A CN 106876981 A CN106876981 A CN 106876981A CN 201510938598 A CN201510938598 A CN 201510938598A CN 106876981 A CN106876981 A CN 106876981A
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- ebg
- structures
- antennas based
- medium substrate
- uwb antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
A kind of UWB antennas based on EBG structures, are related to a kind of trap frequency to be located at the UWB band resistance antennas of WLAN, RFID frequency range.The antenna is by medium substrate (105), radiating element (101), impedance matching on medium substrate are input into microstrip line (102), rice font EBG electromagnetic bandgap structures (103), broken line type EBG electromagnetic bandgap structures (107), metal ground plate (104) composition under medium substrate.The present invention realizes the pass band width of UWB requirements using radiating element, impedance matching input microstrip line and metal ground plate, and improving stopband attenuation using the circular radiation unit with rhombus fractal structure suppresses, and band-stop response is realized using EBG electromagnetic bandgap structures.Antenna stopband of the present invention is near 5.2GHz and 6.8GHz, it is to avoid interfered with wlan system, rfid system.
Description
Technical field
The present invention relates to a kind of UWB band resistance antennas, more particularly, to a kind of UWB antennas based on EBG structures, the antenna can be with
Suppress wlan system (5.15-5.35GHz) interferes problem.
Background technology
2 months 2002, FCC (FCC) approval 3.1-10.6GHz frequency ranges were used for business telecommunication, therefore UWB
It is widely used.
However, because the frequency band of ultra-wideband communications covering is wider, some frequency bands and other wireless system band sharing resources, it is possible to and
Other systems are interfered, such as Wimax systems (3.2-3.5GHz), wlan system (5.15-5.35GHz), (5.725-5.825GHz)
With rfid system (6.8GHz).How to solve co-channel interference and study important content, therefore the ultra wide band with stopband characteristic as UWB
Antenna has practical value very high.
Occur in that many ultra wide bands hinder the mentality of designing of antenna in recent years, fluting, medium back parasitic metal patch such as in radiation patch
Piece, increase open loop resonator, design work mutually form stopband etc. in the antenna of different frequency bands.But all there is limitation in these methods, than
As antenna volume is big, it is unfavorable for the system integration；The centre frequency of stopband is difficult regulation.In the present invention, using receiving significant attention in recent years
EBG structures, formed band-stop response.
Electro-magnetic bandgap (Electromagnetic Band Gap, EBG) structure has forbidden band characteristic and the superior function with mutually reflection in itself,
Field of antenna is applied to, can effectively improve the antenna pattern of antenna, improve gain, reduce secondary lobe and back lobe etc., be applied to array
Antenna, can reduce the effect of intercoupling between antenna.(Electromagnetic Band Gap, EBG) structure meets Modern wireless communication
Requirement of the technology to high performance antenna, so that it is increasingly extensive in the application of field of microwave communication.
Transmission due to EBG structures with the electromagnetic wave that with characteristic is prohibited, can suppress in special frequency channel on the transmission line, so as to form stopband；
And it is easy to integrated with microstrip line, additional space will not be taken；Also, the centre frequency of stopband can easily be accommodated.Therefore, EBG structures are non-
Often it is suitably applied in the design of ultra wide band resistance antenna, makes small volume, the ultra wide band stopband antenna of low cost.
The content of the invention
It is an object of the invention to provide a kind of UWB antennas based on EBG structures, the antenna can suppress UWB systems with
Wlan system is interfered.
The technical solution adopted in the present invention：
The present invention includes medium substrate (105), the radiating element (101) being formed on medium substrate, rhombus etching fractal structure
(106), impedance matching is input into microstrip line (102), rice font EBG electromagnetic bandgap structures (103), broken line type EBG electro-magnetic bandgap knots
Structure (107), is formed at the metal ground plate (104) under medium substrate；The elementary cell of the rice font EBG electromagnetic bandgap structures, be
The square patch structure that finger-like line (1031) and broken line chi structure (1032) are constituted.
A kind of UWB antennas based on EBG structures, it is characterised in that rice font EBG electromagnetic bandgap structures (103)
Elementary cell, the width of its finger-like line (1031) is equal with the gap between each line.
A kind of UWB antennas based on EBG structures, it is characterised in that broken line type EBG electromagnetic bandgap structures (107) and
The elementary cell of rice font EBG electromagnetic bandgap structures (103) is symmetrically distributed in impedance matching input microstrip line (102) both sides；It is each per side
There are 6 elementary cells.
A kind of UWB antennas based on EBG structures, it is characterised in that radiating element (101) is to etch point shape with rhombus
The circular patch of structure.
A kind of UWB antennas based on EBG structures, it is characterised in that medium substrate (105) uses GML1000 materials.
A kind of UWB antennas based on EBG structures, it is characterised in that the frequency of the stopband is near 5.2GHz, it is to avoid
Problem is interfered with wlan system (5.15-5.35GHz).
The invention antenna has following characteristic and advantage relative to existing antenna：
Design is simple, compact conformation, easy to process, with low cost.
The increase of rice word chiasma type EBG structures, good standing-wave ratio and the directional diagram in primary antenna passband are not changed；And with stopband
The advantage of narrow bandwidth.
Brief description of the drawings
Fig. 1 is the basic structure front schematic view of embodiment of the present invention 1.
Fig. 2 is the basic structure side schematic view of embodiment of the present invention 1.
Fig. 3 is the basic structure schematic rear view of embodiment of the present invention 1.
Fig. 4 is the rice word chiasma type EBG construction unit lattice structure schematic diagrames of embodiment of the present invention 1.
Fig. 5 is the broken line type EBG construction unit lattice structure schematic diagrames of embodiment of the present invention 1.
Specific embodiment
The present invention devises a kind of UWB antennas based on EBG structures, and the wave filter can avoid mutually dry with wlan system
Disturb.
Distance is described in more detail to invention below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of UWB antennas based on EBG structures of the invention, radiating element (101), resistance on medium substrate
Anti- matching input microstrip line (102), rhombus etch fractal structure (106), rice word chiasma type EBG electromagnetic bandgap structures (103), broken line
Type EBG electromagnetic bandgap structures (107), using copper product.
An example of the present invention is as shown in Fig. 2 medium substrate (105) is the GML1000 materials that dielectric constant is 3.2.Jie
The thickness of matter substrate is 0.762mm.
Metal ground plate (104) under medium substrate uses copper product.
As shown in figure 1, the length of L1, L2, L3, L4, L5, L6 be respectively 65mm, 10mm, 7.86mm, 44.45mm,
1mm、0.8mm；As shown in Fig. 2 the length of L10 is 0.762mm；As shown in figure 3, the length of L2, L7, L8, L9 is respectively
10mm、4.95mm、44mm、0.8mm。
The design of rice word chiasma type EBG structures：According to micro-strip transmit correlation theory it can be seen from, electric capacity C by elementary cell finger-like line
(1031) obtain, inductance L is obtained by rice word chi structure (1032) of elementary cell；Finger-like line (1031) and rice word chi structure
(1032) resonance structure is constituted, the resonant frequency and bandwidth of elementary cell is determined.Meanwhile, EBG electromagnetic bandgap structures and impedance
Electric capacity C is caused to increase with coupling between with microstrip line (102) is input into so that resonant frequency reduction, bandwidth narrow.To realize WLAN
Respectively there are 6 elementary cells stopband characteristic in frequency range, design microstrip line both sides, as shown in figure 4, elementary cell L11, L12, L13,
The length of L14, L15, L16 is respectively 0.885mm, 2.4mm, 0.15mm, 0.15mm, 0.1mm, 4.32mm.
Claims (6)
1. a kind of UWB antennas based on EBG structures, it is characterised in that including medium substrate (105), be formed at medium substrate
On radiating element (101), rhombus etch fractal structure (106), impedance matching be input into microstrip line (102), rice font
EBG electromagnetic bandgap structures (103), broken line type EBG electromagnetic bandgap structures (107), are formed at the metal under medium substrate
Earth plate (104)；The elementary cell of the rice font EBG electromagnetic bandgap structures, is that finger-like line (1031) and broken line are handed over
The square patch structure that fork structure (1032) is constituted.
2. a kind of UWB antennas based on EBG structures according to claim 1, it is characterised in that rice font EBG electromagnetic belts
The elementary cell of gap structure (103), the width of its finger-like line (1031) is equal with the gap between each line.
3. a kind of UWB antennas based on EBG structures according to claim 1, it is characterised in that broken line type EBG electromagnetic belts
The elementary cell of gap structure (107) and rice font EBG electromagnetic bandgap structures (103) is symmetrically distributed in impedance matching input
Microstrip line (102) both sides；There are 6 elementary cells per side.
4. a kind of UWB antennas based on EBG structures according to claim 1, it is characterised in that radiating element (101) is
The circular patch of fractal structure is etched with rhombus.
5. a kind of UWB antennas based on EBG structures according to claim 1, it is characterised in that medium substrate (105) is adopted
Use GML1000 materials.
6. a kind of UWB antennas based on EBG structures according to claim 1, it is characterised in that the frequency of the stopband point
Not near 5.2Ghz and 6.8GHz, it is suppressed that radio ultra wide band system is to rfid system (6.8GHz), wlan system
The interference of (5.15-5.35GHz).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938598.3A CN106876981A (en) | 2015-12-10 | 2015-12-10 | A kind of UWB antennas based on EBG structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938598.3A CN106876981A (en) | 2015-12-10 | 2015-12-10 | A kind of UWB antennas based on EBG structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106876981A true CN106876981A (en) | 2017-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510938598.3A Pending CN106876981A (en) | 2015-12-10 | 2015-12-10 | A kind of UWB antennas based on EBG structures |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9030360B2 (en) * | 2012-07-26 | 2015-05-12 | Raytheon Company | Electromagnetic band gap structure for enhanced scanning performance in phased array apertures |
| CN104681965A (en) * | 2013-12-02 | 2015-06-03 | 哈尔滨黑石科技有限公司 | Dual-stopband UWB (Ultra-wide Bandwidth) antenna with steep stopbands |
-
2015
- 2015-12-10 CN CN201510938598.3A patent/CN106876981A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9030360B2 (en) * | 2012-07-26 | 2015-05-12 | Raytheon Company | Electromagnetic band gap structure for enhanced scanning performance in phased array apertures |
| CN104681965A (en) * | 2013-12-02 | 2015-06-03 | 哈尔滨黑石科技有限公司 | Dual-stopband UWB (Ultra-wide Bandwidth) antenna with steep stopbands |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
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| WD01 | Invention patent application deemed withdrawn after publication |