CN104681934A - Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure - Google Patents
Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure Download PDFInfo
- Publication number
- CN104681934A CN104681934A CN201310613860.8A CN201310613860A CN104681934A CN 104681934 A CN104681934 A CN 104681934A CN 201310613860 A CN201310613860 A CN 201310613860A CN 104681934 A CN104681934 A CN 104681934A
- Authority
- CN
- China
- Prior art keywords
- ebg
- antenna
- uwb
- shape groove
- band
- 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
- 239000002184 metal Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 230000005855 radiation Effects 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 7
- 238000004891 communication Methods 0.000 description 14
- 238000001914 filtration Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention relates to a four-notch UWB (ultra wide band) antenna based on an EBG (electromagnetic band gap) structure, and relates to the field of UWB wireless communication. The four-notch UWB antenna comprises a partial metal grounding plate (10), a medium substrate (20), an antenna radiating patch (30), a 50 ohm feeder line (31) and four L-shaped groove EBG structure units (40, 50, 60 and 70). The four L-shaped groove EBG structure units (40, 50, 60 and 70) with different sizes are respectively coupled with the 50 ohm feeder line (31) of a regular hexagon-shaped UWB antenna, so the signals of four frequency bands, namely WIMAX (worldwide interoperability for microwave access) (3.4-3.7GHz), WLAN (wireless local area network) (5.15-5.35GHz, and 5.725-5.825GHz) and X-wave band downlink satellite communication (7.25-7.75GHz), can be effectively filtered out. The four-notch UWB antenna has the advantages that the antenna has good all-bearing radiating property and stable gain effect in the full frequency band, and the antenna is suitable for the UWB wireless communication system.
Description
Technical field
The present invention relates to a kind of four trap antennas for ultra broadband (UWB) wireless communication field, especially a kind of four trap UWB antennas based on EBG structure.Etching L shape groove in bight via hole mushroom-shaped electromagnetic bandgap structure (CLV-EBG), and be coupled with the feeder line of regular hexagon ultra broadband (UWB) antenna, filtering microwave interconnecting access (WIMAX effectively, 3.4GHz-3.7GHz), wireless personal local area network (WLAN(5.15GHz-5.35GHz, 5.725GHz-5.825GHz)) and the signal of X-band down-link satellite communication signal (7.25GHz-7.75GHz) four frequency ranges.
Background technology
In February, 2002 FCC (Federal Communications Commission:FCC) 3.1GHz ~ 10.6GHz frequency range is divided into commercial UWB radio communication service to use, henceforth, super-broadband tech obtains fast development, the research & design of UWB antenna, as one of the key technology of UWB radio communication, has become the focus of research.Because the working frequency range of UWB system overlaps with some frequency range of existing wireless communications system, as worldwide interoperability for microwave access (WIMAX, 3.3GHz-3.6GHz), wireless personal local area network (WLAN, (5.15GHz-5.35GHz, 5.725GHz-5.825GHz)), X-band down-link satellite communication signal (7.25GHz-7.75GHz) etc.In order to reduce UWB antenna, interference being caused to system communication in these frequency ranges, there is the UWB antenna of trap characteristic by extensive concern.
While realizing good trap characteristic, ensure the miniaturization of UWB antenna, broadband, good radiation characteristic is a more thorny difficult problem.The UWB antenna so far with trap characteristic has a large amount of achievements in research, and the technology realizing trap may be summarized to be following several:
(1) at radiation patch or the ground plate etching line of rabbet joint
(2) parasitic element is added
(3) band stop filter of SIR is loaded
These technology realizing trap also exist following deficiency: on aerial radiation paster, cutting and the method that increases parasitic element near radiation patch all can change the CURRENT DISTRIBUTION of aerial radiation chip surface, affect the antenna pattern of antenna; Portion of energy can be made to leak from floor trough in the method for antenna floor cutting, the back lobe of antenna pattern is had an impact, reduce the gain of antenna; Add the size that parasitic element can increase antenna, and load the band stop filter of SIR, make complex structure, integrated difficulty is high.The ubiquitous problem of these methods is that each notch band influences each other in addition, not easily independent control.
Electro-magnetic bandgap (EBG) structure is with the frequency band gap characteristic of its excellence, structure is simple, be easy to integrated, band gap properties is easy to regulate, if in addition miniaturized, by being coupled with input, can facilitate and realize and control each trap of ultra-wideband antenna independently, and less on the CURRENT DISTRIBUTION impact of radiation patch, good radiation characteristic can be kept, gain effect.Therefore, design a high-performance ultra-wideband antenna that there is trap characteristic based on EBG structure and there is profound significance.
Summary of the invention
The object of the invention is to improve in existing UWB antenna notch technology affects antenna radiation characteristics, increases the defects such as antenna size, trap not easily independently control.Coupling is formed by feeder line both sides L shape groove EBG structures different for four sizes being loaded on respectively regular hexagon UWB antenna, filtering WIMAX(3.3GHz-3.6GHz effectively), WLAN(5.15GHz-5.35GHz, 5.725GHz-5.825GHz) and the signal of X-band down-link satellite communication signal (5.25GHz-5.75GHz) totally four frequency ranges, achieve good narrow resistance band characteristic, and four trap band characteristic can independent regulation.
The technical solution adopted in the present invention is:
A kind of four trap UWB antennas based on EBG structure, it is characterized in that: comprise the L shape groove EBG unit (40 that part metals ground plate (10), medium substrate (20), aerial radiation paster (30), 50 ohm of feeder lines (31) are different with four sizes, 50,60,70).
Described a kind of four trap UWB antennas based on EBG structure, is characterized in that: part metals ground plate (10) upper topside mid portion has etched the rectangular channel (11) wide with 50 ohm of feeder lines (31), and aerial radiation paster (30) is regular hexagon.
Described a kind of four trap UWB antennas based on EBG structure, is characterized in that: L shape groove EBG unit (40,50,60,70) that four sizes are different loads on 50 ohm of feeder line (31) both sides respectively and forms coupling; L shape groove EBG unit (40,50,60,70) comprises EBG metal patch, L shape groove (42,52,62,72) and four round metal cylindricality via holes (41,51,61,71).
Described a kind of four trap UWB antennas based on EBG structure, it is characterized in that: four round metal cylindricality via holes (41,51,61,71) through EBG metal patch, between medium substrate (20) and partial earthing plate (10), round metal cylindricality via hole (41,61) is positioned at the upper left corner of EBG metal patch, and round metal cylindricality via hole (51,71) is positioned at the upper right corner of EBG metal patch.
The present invention has following advantage and characteristic relative to prior art:
(1) in CLV-EBG structure, etch L shape groove, extend equivalent current path, reduce the size of CLV-EBG unit, ensure that the miniaturization of UWB antenna, and structure simple, be easy to integrated.
(2) in CLV-EBG structure, etch L shape groove, bandwidth of rejection is narrowed, the filtering signal of WLAN two frequency ranges, improves the availability of frequency spectrum independently.
(3) relative bandwidth of antenna is wider, and the low-limit frequency being greater than 134.9%, VSWR<2 is 2.33GHz, and highest frequency is greater than 12GHz.
(4) L shape groove EBG structure is loaded, less on the radiation patch surface current impact of antenna, thus maintain the good omnidirectional radiation characteristic of UWB antenna full frequency band and stable gain effect.
(5) WIMAX(3.3GHz-3.6GHz), WLAN(5.15GHz-5.35GHz, 5.725GHz-5.825GHz) and X-band down-link satellite communication signal (5.25GHz-5.75GHz) four trap band characteristic (bandwidth, position etc.) can be controlled independently by adjustment four L shape groove EBG construction unit parameters.
Accompanying drawing explanation
Fig. 1 is antenna base structure vertical view;
Fig. 2 is antenna back side basic block diagram;
Fig. 3 is EBG trap schematic diagram;
Fig. 4 is antenna standing wave ratio parameter schematic diagram;
Fig. 5 is peak antenna gain schematic diagram;
Fig. 6 is the E face directional diagram of antenna under 4GHz;
Fig. 7 is the H face directional diagram of antenna under 4GHz;
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 and Figure 2, based on four trap UWB antennas of EBG structure, comprise the L shape groove EBG unit (40,50 that part metals ground plate (10), medium substrate (20), aerial radiation paster (30), 50 ohm of feeder lines (31) are different with four sizes, 60,70).Wherein partial earthing plate (10) is positioned at medium substrate (20) bottom surface, and has certain distance (L between upper topside and aerial radiation paster (30)
1-Lg), this distance is for regulating the impedance matching of UWB antenna high band.Etched at part metals ground plate (10) upper topside mid portion center one wide for W
s, long is L
srectangular channel (11), its width is equal with 50 ohm of feeder lines (31), and this rectangular channel, for improving antenna broadband character, improves standing-wave ratio bandwidth.
In antenna of the present invention, the relative dielectric constant of medium substrate (20) is 3, and loss angle tangent is 0.004, and be highly h, processing cost is low, is easy to integrated with common printed circuit board.
The regular hexagon of aerial radiation paster (50) to be the length of side be W, its upper topside overlaps with medium substrate (20) upper topside, and bottom connects with 50 ohm of feeder lines (31), and feeder line width is W
f.
L shape groove EBG unit (40,50,60,70) that four sizes are different is square, loads on 50 ohm of feeder line (31) both sides respectively and forms coupling, and four L shape groove EBG unit (40,50,60,70) are respectively g with the distance of 50 ohm of feeder lines (31)
1, g
2, g
3, g
4, comprise EBG metal patch, L shape groove (42,52,62,72) and four round metal cylindricality via holes (41,51,61,71).Etch three L shape grooves in L shape groove EBG unit (40,50,60) respectively, and in L shape groove EBG unit (70), etch two L shape grooves.
The adjacent both sides of EBG metal patch, two, the left side are at a distance of L
01, the EBG metal patch wherein and medium substrate (20) base are at a distance of L
03.The adjacent both sides of EBG metal patch, two, the right are at a distance of L
02, the EBG metal patch wherein and medium substrate (20) base are at a distance of L
04.Four EBG metal patch length of sides are respectively a
1, a
2, a
3, a
4, do not increase the size of antenna, maintain the miniaturization of antenna.L shape groove (42,52,62,72) is wide is all 0.2mm, and distance is also 0.2mm each other, and is arranged in helical form, reduces bandwidth of rejection while extending equivalent current path, achieves comprehensive Design that is miniaturized and narrow resistance band.Round metal cylindricality via hole (41,61) is positioned at the upper left corner of EBG metal patch, and round metal cylindricality via hole (51,71) is positioned at the upper right corner of EBG metal patch, and four round metal cylindricality via hole (41,51,61,71) radiuses are respectively r
1, r
2, r
3, r
4, its edge and EBG metal patch edge are 0.2mm all apart.
As shown in Figure 3, the trap principle of L shape groove EBG structure is described from the front view of this UWB antenna here, and wherein medium substrate is perspective structure.Be described for L shape groove EBG unit (40), when passing through 50 ohm of feeder lines (31) to antenna feed, EBG structural metal paster and 50 ohm of feeder lines (31) form coupling capacitance C
10, form coupling capacitance C with part metals ground plate (10) by medium substrate (20)
11, be equivalent to inductance L by the current circuit of round metal cylindricality via hole (41)
10, thus define a parallel LC resonance loop, resonance frequency
in like manner L shape groove EBG unit (50,60,70) also can form other three parallel LC resonance loops, and resonance frequency is respectively
With
Four resonant tanks serve the effect of a prefilter, have effectively achieved four traps.The centre frequency of four trap frequency ranges, notch bandwidth, the parameters such as notch depth can pass through the structural parameters regulating L shape groove EBG unit (40,50,60,70): EBG metal patch length of side a
1, a
2, a
3, a
4with coupling distance g
1, g
2, g
3, g
4etc. independently regulating.The present invention is exactly by appropriate design L shape groove EBG unit (40,50,60,70) structural parameters, the filtering WIMAX(3.3GHz-3.6GHz effectively ensureing antenna miniaturization, broadband, while good radiation characteristic), WLAN(5.15GHz-5.35GHz, 5.725GHz-5.825GHz) and the signal of X-band down-link satellite communication signal (5.25GHz-5.75GHz) four frequency ranges.Wherein L shape groove EBG unit (60) is used for the signal of filtering WIMAX frequency range, and L shape groove EBG unit (40,50) is used for the signal of filtering WLAN two frequency bands respectively, and L shape groove EBG unit (70) is used for filtering X-band down-link satellite communication signal.
As shown in Fig. 1, Fig. 2, Fig. 3, the concrete structure of this UWB antenna is of a size of: W
0=34mm, L
0=43.9mm, W=10.8mm, L
1=25.2mm, a
1=3.65mm, a
2=3.3mm, a
3=5.45mm, a
4=2.48mm, W
f=3.6mm, Lg=24mm, W
s=3.6mm, L
s=2mm, h=1.6mm, r
1=0.31mm, r
2=0.27mm, r
3=0.3mm, r
4=0.3mm, g
1=0.5mm, g
2=0.75mm, g
3=0.387mm, g
4=0.624mm, L
01=5.45mm, L
02=7.11mm, L
03=4.275mm, L
04=5.76mm.
As shown in Figure 4, the antenna standing wave ratio bandwidth of VSWR<2 covers the frequency band range of UWB, and low frequency is 2.33GHz, and high frequency is greater than 12GHz, and relative bandwidth is greater than 134.9%.At 3.5GHz, 5.2GHz, 5.8GHz and 7.5GHz place creates four traps, maximum notch depth can reach 6.28dB respectively, 5.05dB, 5.47dB and 4.64dB, notch-width (VSWR>2) is respectively 3.38GHz-3.71GHz, 5.02GHz-5.39GHz, 5.61GHz-5.99GHz and 7.12GHz-7.86GHz, there is good narrow resistance band characteristic, while guarantee band efficiency, filtering WIMAX(3.3GHz-3.6GHz effectively), WLAN(5.15GHz-5.35GHz, 5.725GHz-5.825GHz) and the signal of X-band down-link satellite communication signal (5.25GHz-5.75GHz) four frequency ranges.
As shown in Figure 5, from dotted portion can find out do not load four L shape groove EBG unit (40,50,60,70) time, UWB antenna is in 3.1GHz-10.6GHz frequency band range, and peak gain minimum value is 2.27dB, and maximum is 5.4dB.Load four L shape groove EBG unit (40,50,60,70) after, obviously reduce in 3.52GHz, 5.29GHz, 5.78GHz and 7.7GHz tetra-trap frequency range place's gains, drop to-3.41dB, 0.85dB, 0.08dB and 1.68dB respectively, and peak gain maximum is 5.85dB, creates good trap effect.Other frequency ranges two curves are consistent substantially, thus show, the loading of four L shape groove EBG unit (40,50,60,70), except trap frequency range, very little to the gain effects of former UWB antenna, ensure that stable gain effect in full frequency band.
As Fig. 6, shown in Fig. 7, in E face, 4GHz place and H surface radiation directional diagram, dotted portion and bold portion overlap substantially, indicate the radiation characteristic of loading L shape groove EBG structure on former UWB antenna substantially not affect, wherein H face is similar to omnidirectional radiation characteristic, and the radiation characteristic in E face is similar with the radiation characteristic of dipole, be approximately ' 8 ' shape, the omnidirectional radiation characteristic that this antenna is good is applicable to technical field of ultra-wideband radio communication.
Claims (4)
1. four trap UWB antennas based on EBG structure, it is characterized in that: comprise the L shape groove EBG unit (40 that part metals ground plate (10), medium substrate (20), aerial radiation paster (30), 50 ohm of feeder lines (31) are different with four sizes, 50,60,70).
2. a kind of four trap UWB antennas based on EBG structure according to claim 1, it is characterized in that: part metals ground plate (10) upper topside mid portion has etched the rectangular channel (11) wide with 50 ohm of feeder lines (31), and aerial radiation paster (30) is regular hexagon.
3. a kind of four trap UWB antennas based on EBG structure according to claim 1, is characterized in that: L shape groove EBG unit (40,50,60,70) that four sizes are different loads on 50 ohm of feeder line (31) both sides respectively and forms coupling; L shape groove EBG unit (40,50,60,70) comprises EBG metal patch, L shape groove (42,52,62,72) and three round metal cylindricality via holes (41,51,61,71).
4. a kind of four trap UWB antennas based on EBG structure according to claim 1, it is characterized in that: four round metal cylindricality via holes (41,51,61,71) through EBG metal patch, between medium substrate (20) and partial earthing plate (10), round metal cylindricality via hole (41,61) is positioned at the upper left corner of EBG metal patch, and round metal cylindricality via hole (51,71) is positioned at the upper right corner of EBG metal patch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613860.8A CN104681934A (en) | 2013-11-27 | 2013-11-27 | Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613860.8A CN104681934A (en) | 2013-11-27 | 2013-11-27 | Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681934A true CN104681934A (en) | 2015-06-03 |
Family
ID=53316699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310613860.8A Pending CN104681934A (en) | 2013-11-27 | 2013-11-27 | Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104681934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226391A (en) * | 2015-10-26 | 2016-01-06 | 桂林电子科技大学 | There is the ultra wide band resistance antenna of rectangle stopband characteristic |
| CN105356042A (en) * | 2015-11-23 | 2016-02-24 | 西安电子科技大学 | Miniature double-notch ultra-wideband antenna |
-
2013
- 2013-11-27 CN CN201310613860.8A patent/CN104681934A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226391A (en) * | 2015-10-26 | 2016-01-06 | 桂林电子科技大学 | There is the ultra wide band resistance antenna of rectangle stopband characteristic |
| CN105356042A (en) * | 2015-11-23 | 2016-02-24 | 西安电子科技大学 | Miniature double-notch ultra-wideband antenna |
| CN105356042B (en) * | 2015-11-23 | 2018-03-06 | 西安电子科技大学 | Small capacity double trap UWB antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100665007B1 (en) | Ultra Wideband Internal Antenna | |
| CN103515710B (en) | Dual-band slot antenna based on half-mode substrate integrated waveguide | |
| CN105789855A (en) | Novel double-band EBG structure | |
| CN101777691B (en) | Slot printing monopole ultra-wideband antenna | |
| CN203690491U (en) | Ultra-wideband antenna with WLAN dual band-notched characteristic | |
| CN203503783U (en) | Ultra Wideband Antenna with Dual Notch Characteristics | |
| CN106384878A (en) | Dual stop band ultra-wideband antenna with steep stop band | |
| CN104681948A (en) | UWB (ultra wide band) antenna with WLAN (wireless local area network) dual-notch property | |
| CN104681949A (en) | Dual-notch UWB (ultra wide band) antenna based on Mushroom-EBG (electromagnetic band gap) structure | |
| CN104681934A (en) | Four-notch UWB (ultra wide band) antenna based on EBG (electromagnetic band gap) structure | |
| CN104681956A (en) | UWB (Ultra-wideband) band-notch antenna with steep stop band | |
| CN203456593U (en) | Dual-band slot antenna based on half-mode substrate integrated waveguide | |
| CN107834190B (en) | Small double-notch ultra-wideband antenna | |
| Shinde et al. | Design of triple band slot antenna for 802.11 a/b WLAN and upper UWB application using pentagon tuning stub | |
| CN203932311U (en) | A kind of four trap UWB antennas based on EBG structure | |
| CN104681964A (en) | Novel tri-wave trapping UWB (Ultra Wide Band) antenna | |
| CN203690501U (en) | Novel triple band-notched ultra-wideband antenna | |
| CN105789897A (en) | EBG structure-based three-notch UWB antenna | |
| Elkorany et al. | UWB integrated microstrip patch antenna with unsymmetrical opposite slots | |
| CN104681966A (en) | Novel attenuation band steep UWB (Ultra Wide Band) band-notch antenna | |
| CN104681982A (en) | UWB (ultra wide band) antenna with band resistance properties based on CLV-EBG (CLV-electromagnetic band gap) structure | |
| CN204333239U (en) | A kind of novel double frequency-band EBG structure | |
| CN203760636U (en) | Double-trap-wave UWB antenna based on CLV-EBG structure | |
| CN204333267U (en) | A kind of three trap UWB antennas based on EBG structure | |
| Kumar et al. | A CPW fed octagonal patch UWB antenna with WiMAX band-notched characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |