CN104681967A - Novel tri-wave trapping UWB (Ultra Wide Band) antenna - Google Patents
Novel tri-wave trapping UWB (Ultra Wide Band) antenna Download PDFInfo
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- CN104681967A CN104681967A CN201310637309.7A CN201310637309A CN104681967A CN 104681967 A CN104681967 A CN 104681967A CN 201310637309 A CN201310637309 A CN 201310637309A CN 104681967 A CN104681967 A CN 104681967A
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Abstract
The invention discloses a novel UWB (Ultra Wide Band) antenna with a tri-wave trapping characteristic. The novel UWB antenna is characterized by comprising a dielectric substrate , wherein metallic conductor surfaces are printed on the same side of the dielectric substrate; a rectangular radiating element structure, a coplanar waveguide feeder line and incomplete ground planes are positioned in the dielectric substrate; three similar U-shaped grooves are etched in the rectangular radiating element, so that such a structure can generate trapped waves of three frequency bands; the left and right sides of the feeder line are provided with the partial ground planes; a micro coplanar waveguide feeding mode is adopted for feeding.
Description
Technical field
The present invention relates to antenna technical field, particularly relate to a kind of three novel trap UWB antennas.
Background technology
Since on January 14th, 2002,3.1-10.6GHz frequency incorporates into as after civilian ultra broadband (UWB) frequency range exempting from licence by FCC, ultra broadband short-range communication technique is turned into the focus of wireless communication field keen competition, as the ultra-wideband antenna of important component part, also become the heat subject of scientific and technical personnel's research in recent years.It is the scope that >20% or absolute bandwidth are greater than 500MHz that UWB frequency range is defined as relative bandwidth.But in the frequency range that radio ultra wide band system is specified, there are these some narrow-band communication systems, such as be, the satellite communication system of WIMAX (3.3GHz-3.7Ghz) communication system, WLAN (wireless local area network) WLAN (5.15GHz-5.825GHz) and some C-bands, the signal of these systems can produce interference to ultra-wideband communications.In order to suppress the interference between radio ultra wide band system and narrowband systems, usually need in radio ultra wide band system, introduce band stop-band filter filtering narrow-band, but this certainly will increase complexity and the cost of system.
UWB communication has a great difference with traditional narrow and wide-band communication system, especially there is the high transfer rate that other wireless technologys cannot be compared in short-distance wireless communication, electronic equipment such as PC, television set, multimedia, mobile phone etc. can be coupled together fast and effectively and set up PAN (Personal Area Network) and then shared photo, the resource such as music, video.
Generally producing single trap with two trap in UWB communication system is by adding resonance structure unit in antennas.These construction units comprise L shape groove, U-lag, W shape groove, H-shaped groove, C shape groove, W shape groove etc.Also one additive method is had, as added SRR resonance structure unit in antennas.The most frequently used is exactly grooving techniques, as patent No. CN202373694U, the Chinese patent that patent name is " having the ultra-wideband antenna of two trap characteristic ", this patent has been opened two grooves and has been realized two trap characteristic in radiation patch, but wherein although the stopband of WLAN frequency range is reached to the effect of trap, there is quite a few frequency range that should not fall into also by filtering.
Therefore the ultra-wideband antenna designed with narrow-band filtering characteristic is the important method of dealing with problems.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide one to be in ultra wideband frequency, the ultra-wideband antenna with arrowband trap characteristic of the electromagnetic interference of WIMAX (3.3GHz-3.7GHz) WLAN (5.15-5.85GHz) network and C-band can be effectively reduced.
The object of the present invention is achieved like this:
Comprise medium substrate, be positioned at the rectangular radiation element of medium substrate front central authorities, employing be co-planar waveguide (CPW) feed, feeder line is directly connected with the central authorities of rectangular radiation element, and feed line is directly connected with SMA inner wire, and the outer conductor of SMA is connected with ground plane.
The technical solution adopted in the present invention:
Three novel trap UWB antennas, is characterized in that, comprise one piece of medium substrate, and metal guide dignity is all printed on the same side of medium substrate, wherein has the radiative unit structure of rectangle, coplanar wave guide feedback line, incomplete ground plane; Rectangular radiation element has etched three class U-lags, such structure can produce the trap of three frequency ranges, and feed line the right and left is partial earthing face; What adopt is that the mode of micro-coplanar wave guide feedback carries out feed.
Described a kind of three novel trap UWB antennas, is characterized in that, what the below of rectangular radiation element adopted is gradually distressed structure, are connected in the middle part of it with feed line; Rectangular radiation face etches the class U-lag structure of three different sizes.
Described a kind of three novel trap UWB antennas, is characterized in that, what the imperfect ground plane of feed line both sides adopted is gradually distressed structure.
Described a kind of three novel trap UWB antennas, is characterized in that, change the length of class U-lag on radiating surface and the height of groove, to change resonance frequency and trap centre frequency.
Described a kind of three novel trap UWB antennas, it is characterized in that, described radiating element is rectangle, and its lower limb is the paster adopting gradation type structure.
Described a kind of three novel trap UWB antennas, it is characterized in that, feed element is coplanar wave guide feedback, and the middle part of rectangular radiation element is directly connected with feed line.
The present invention mainly utilizes the rectangular radiation element of gradation type and the mode of coplanar wave guide feedback to realize the demand of ultra-wideband communications, realizes covering whole ultra broadband.Produced the trap of three frequency ranges by the length of the groove of the centre in adjustment radiative unit structure, the structure order of this antenna, work strip is wide, is convenient to processing, with low cost.
Antenna of the present invention may be used for the wireless of short distance indoor to be waited on equipment, reduces WIMAX (3.3GHz-3.7GHz), WLAN(5.14Ghz-5.85GHz) satellite band of network and C-band is to the electromagnetic interference of UWB communication system.
The invention belongs to the antenna of CPW feed, this antenna is printed on the same side of medium substrate, and its radiating element is gradation type rectangular patch.This antenna has good impedance bandwidth and trap characteristic, and structure is simple, and the center of notch bandwidth can the length of regulating tank regulate, and therefore considerably increases the scope of its practicality.What the present invention adopted is printed antenna structure and CPW feed structure, greatly reduces the volume of antenna, and what be greatly beneficial to the microwave integrated circuit of radio-frequency front-end is integrated, simplifies the design of circuit.
According to microstrip-fed advantage and designing technique thinking, the feature of technical scheme of the present invention is:
1, radiating element adopts gradation type rectangular radiation face, is similar to traditional printed monopole antenna, is convenient to designing and making, and can ensure good impedance matching, realizes wide-band impedance coupling, has good omnidirectional radiation characteristic simultaneously.
2, the present invention adopts CPW feed structure, and feed line is directly connected with T-shaped radiating element.
What 3, the present invention adopted is that gradation type structure is connected with feed line, effectively improves the impedance operator of antenna feed, realizes the coupling of better ultra broadband.
4, the present invention is by changing the length of the groove in rectangular radiation element, thus change the CURRENT DISTRIBUTION of antenna surface, produce three resonance frequencys, thus form three traps, realize the communication for coordination of ultra broadband and WIMAX (3.3GHz-3.7Ghz) and WLAN(5.14Ghz-5.85GHz) network and C-band satellite communication system.
Compared with prior art, the significant advantage had is in the present invention:
1, the present invention can realize wider impedance bandwidth, so at the radiating element designing the practical gradation type rectangular configuration of ultra-wideband antenna, the impedance bandwidth of the antenna of broadening, covers the whole frequency range of UWB.Designed ultra-wideband antenna covers 3.0GHz-10.6GHz, simultaneously at WIMAX (3.3GHz-3.7GHz), WLAN(5.14Ghz-5.85GHz) 7GHz produces a notch bandwidth respectively in frequency range and C-band, suppress the interference that it is potential, realize collaborative work.
2, invention introduces the open circuit/short-circuit micro-band line regulation technology of design of filter Theory and technology.Trap characteristic is produced by regulating the groove in rectangular radiation element.This mode using novel employing to slot, regulates centre frequency and the bandwidth of trap by the length of regulating tank.This structure eliminates the design of filter, reduces the complexity of circuit design, improves the performance of system.
4, the structure of this antenna is simple, and compact, volume is little, designs easy to process, with low cost.
Accompanying drawing explanation
Fig. 1 is structure front view of the present invention;
Fig. 2 is structure side view of the present invention;
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in detail:
The present invention has etched three class U-lags 2,3,4 by rectangular radiation element 4, coplanar wave guide feedback line 6, ground plane 7, rectangular radiation element 4 as shown in Figure 1, Figure 2.Whole antenna is printed on the same side that dielectric constant is the medium substrate 1 of 3.55.The lower end of the feeder line 6 of this ultra-wideband antenna is connected with SMA inner wire.The outer conductor of SMA is connected with ground plane 7.Structure according to Fig. 1, Fig. 2, groove 1 is apart from the upper end 9mm of ground plane, and groove 2 is apart from ground plane upper end 6.4mm, and groove 3 is apart from ground plane upper end 3mm.Select suitable size during design, just can meet its ultra broadband characteristic and trap characteristic.
Physical dimension of the present invention is 26mm*30mm*0.8mm, and dielectric constant is the medium substrate 1 of 3.55.
Empirical equation is passed through in the trap characteristic region of antenna of the present invention
establish the length of tuning slot, wherein L
sifor the length of the line of rabbet joint, c is the light velocity, F
notchfor the centre frequency of trap frequency, ε
efffor the effective dielectric constant of medium.
Antenna of the present invention adopts dielectric constant to be the medium substrate of 3.55, and dielectric loss tangent angle is less than 0.0025.
Claims (6)
1. three novel trap UWB antennas, is characterized in that, comprise one piece of medium substrate, and metal guide dignity is all printed on the same side of medium substrate, wherein has the radiative unit structure of rectangle, coplanar wave guide feedback line, incomplete ground plane; Rectangular radiation element has etched three class U-lags, such structure can produce the trap of three frequency ranges, and feed line the right and left is partial earthing face; What adopt is that the mode of micro-coplanar wave guide feedback carries out feed.
2. three novel according to claim 1 trap UWB antennas, is characterized in that, what the below of rectangular radiation element adopted is gradually distressed structure, are connected in the middle part of it with feed line; Rectangular radiation face etches the class U-lag structure of three different sizes.
3. three novel according to claim 1 trap UWB antennas, is characterized in that, what the imperfect ground plane of feed line both sides adopted is gradually distressed structure.
4. three novel according to claim 1 trap UWB antennas, is characterized in that, change the length of class U-lag on radiating surface and the height of groove, to change resonance frequency and trap centre frequency.
5. three novel according to claim 1 trap UWB antennas, is characterized in that, described radiating element is rectangle, and its lower limb is the paster adopting gradation type structure.
6. three novel according to claim 1 trap UWB antennas, is characterized in that, feed element is coplanar wave guide feedback, and the middle part of rectangular radiation element is directly connected with feed line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310637309.7A CN104681967A (en) | 2013-12-02 | 2013-12-02 | Novel tri-wave trapping UWB (Ultra Wide Band) antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310637309.7A CN104681967A (en) | 2013-12-02 | 2013-12-02 | Novel tri-wave trapping UWB (Ultra Wide Band) antenna |
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| Publication Number | Publication Date |
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| CN104681967A true CN104681967A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310637309.7A Pending CN104681967A (en) | 2013-12-02 | 2013-12-02 | Novel tri-wave trapping UWB (Ultra Wide Band) antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767460A (en) * | 2018-05-23 | 2018-11-06 | 辽宁工程技术大学 | A kind of ultra-wideband antenna with three trap characteristics |
| CN112467352A (en) * | 2020-11-19 | 2021-03-09 | 辽宁工程技术大学 | Wrench-shaped trapped wave reconfigurable ultra-wideband antenna |
-
2013
- 2013-12-02 CN CN201310637309.7A patent/CN104681967A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767460A (en) * | 2018-05-23 | 2018-11-06 | 辽宁工程技术大学 | A kind of ultra-wideband antenna with three trap characteristics |
| CN108767460B (en) * | 2018-05-23 | 2024-01-02 | 辽宁工程技术大学 | Ultra-wideband antenna with triple notch characteristics |
| CN112467352A (en) * | 2020-11-19 | 2021-03-09 | 辽宁工程技术大学 | Wrench-shaped trapped wave reconfigurable ultra-wideband antenna |
| CN112467352B (en) * | 2020-11-19 | 2023-07-07 | 辽宁工程技术大学 | Wrench-shaped notch reconfigurable ultra-wideband antenna |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |