CN103943953B - Small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna - Google Patents
Small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna Download PDFInfo
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- CN103943953B CN103943953B CN201410115028.XA CN201410115028A CN103943953B CN 103943953 B CN103943953 B CN 103943953B CN 201410115028 A CN201410115028 A CN 201410115028A CN 103943953 B CN103943953 B CN 103943953B
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Abstract
Small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna, belongs to technical field of ultra-wideband radio communication.Ultra-wideband antenna of the present invention comprises medium substrate, feed line, ground plate and metal radiation unit; Metal radiation unit comprises class symmetric trapezium unit, T-shaped metal minor matters and L shape metal minor matters; Class symmetric trapezium unit by ten rectangle sheet metals from top to bottom successively connect rearrange, the two ends on the long limit of the 5th rectangle sheet metal are connected to L shape metal minor matters, class symmetric trapezium unit is provided with manhole, be provided with T-shaped metal minor matters in manhole, the end of the perpendicular end of T-shaped metal minor matters is connected with the 9th rectangle sheet metal.This antenna has the relative standing-wave ratio bandwidth of 1.6-14.8Ghz, has filter action significantly at 3.3-3.7GHz and 5.0-5.9Ghz, thus inhibit different wireless communication system disturb effect mutually, and there is full frequency band constant gain and full frequency band omnidirectional radiation.
Description
Technical field
The present invention relates to a kind of small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna, belong to technical field of ultra-wideband radio communication.
Background technology
Ultra-wideband antenna refers to the antenna of the non-constant width of bandwidth, and namely characteristic such as input impedance, efficiency, lobe sensing, lobe width, minor level, direction coefficient, gain, the polarization etc. of antenna do not exceed frequency range corresponding to given scope in the scope of non-constant width.
In prior art, the frequency range that radio ultra wide band system covers is 3.1Ghz-10.6GHz, and in the use band limits of WiMax, WLAN communication system, there is 3.3Ghz-3.7Ghz and 5.0Ghz-5.9Ghz frequency range, and the systems such as IEEE802.11b/g, RFID propose the user demand to 2.4-2.484GHz frequency range, this just causes when needs ultra broadband and IEEE802.11b/g, RFID dual system use simultaneously, and WiMax, WLAN communication system and dual system are disturbed mutually.
Summary of the invention
The object of the invention is to solve when the system such as radio ultra wide band system and IEEE802.11b/g, RFID uses simultaneously in prior art, the technical problem mutually disturbed with WiMax, WLAN communication system, provides a kind of small-sized L-T minor matters biobelt to hinder plane ultra-wideband antenna.
Small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna of the present invention, comprises medium substrate; Be set in described medium substrate upper surface and for receiving electromagnetic feed line; Be set in described medium substrate upper surface and for the metal radiation unit of radiated electromagnetic wave; Be fixed on described medium substrate upper surface and symmetry is set in the ground plate of feed line both sides; Described feed line and metal radiation unit are all symmetrical relative to the axis of medium substrate; Described metal radiation unit comprises class symmetric trapezium unit, T-shaped metal minor matters and L shape metal minor matters;
Described class symmetric trapezium unit is connected successively from top to bottom by ten rectangle sheet metals and rearranges, and described ten rectangle sheet metals from top to bottom, long are respectively 6mm, 12mm, 17mm, 22mm, 24mm, 22mm, 17mm, 12mm, 9mm, 6mm, widely be respectively 1.5mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2.5mm, 2mm; The two ends on the long limit of described 5th rectangle sheet metal are connected to L shape metal minor matters, described L shape metal minor matters are inverted L-shaped sheet metal, the horizontal end of L shape metal minor matters holds the length of side equal with perpendicular, the horizontal end length of side is 7mm, the horizontal end of L shape metal minor matters is 0.5mm with the perpendicular width held, the end of the perpendicular end of L shape metal minor matters is connected with the long limit of the 5th rectangle sheet metal, and the outer side edges of the perpendicular end of L shape metal minor matters is alignd with the broadside of the 5th rectangle sheet metal; Be provided with manhole in described class symmetric trapezium unit, the distance of center circle of manhole is 3mm from the vertical range on the upper base of the 9th rectangle sheet metal, and the radius of manhole is 4.5mm; T-shaped metal minor matters are provided with in described manhole, T-shaped metal minor matters are T-shaped sheet metal, the long 6mm of horizontal end of T-shaped metal minor matters, the long 2mm of perpendicular end, the horizontal end of T-shaped metal minor matters is 0.5mm with the perpendicular width held, and the end of the perpendicular end of T-shaped metal minor matters is connected with the 9th rectangle sheet metal; Described feed line is rectangle sheet metal, described ground plate is two rectangle sheet metals, one article of broadside of feed line is connected with the long limit of the tenth rectangle sheet metal, another broadside of feed line and the broadside of ground plate are on same straight line, the long limit of ground plate is parallel with the long limit of feed line, and ground plate is being provided with always open near feed line and metal radiation unit junction.
Further, the long limit of described feed line is 11.5mm, and broadside is 2.8mm.
Further, described ground plate is that two long limits are 11.5mm, and broadside is the rectangle sheet metal of 11.2mm.
Further, the always open length of two of described ground plate is 2.2mm, is widely 1.5mm, and two always open long limits are parallel with the broadside of ground plate.
Further, described sheet metal is copper sheet.
Operation principle of the present invention: antenna designed by the present invention is small-sized plane ultra-wideband microstrip antenna, antenna adopts coplanar waveguide structure to carry out feed, electromagnetic wave is along propagated forward between metal feed line and symmetrical structure metal ground plate, owing to adopting class symmetrical stairstepping metal radiation unit, micro-band metal patch of different length-width ratio is equivalent to be connected in series together, the resonance frequency that the metal patch of different length-width ratio is corresponding different, be interconnected by different resonant frequency points, achieve effective expansion of antenna standing wave ratio bandwidth, therefore resonance effect can be produced to the electromagnetic wave of different frequency range, thus achieve effective broadening of microstrip antenna standing-wave ratio bandwidth, when electromagnetic wave near 5.6GHz frequency is by metal radiation body inside T-shaped metal minor matters, be suppressed in around T-shaped metal minor matters, antenna is made to present standing wave state at the resonance structure of this frequency range, change the surface current of antenna, thus it is electromagnetic to external radiation to restrained effectively corresponding frequency band, achieve antenna to these two electromagnetic filter actions of frequency range, same principle, when near 3.6GHz frequency, electromagnetic wave is by symmetrical L shape metal minor matters, also be bound in two L shape metal minor matters, radiation effect effectively cannot be produced, thus achieve this frequency range electromagnetic band resistance effect.
Beneficial effect of the present invention:
(1) the present invention is at employing coplanar waveguide structure feed, while the miniaturization achieving antenna and complanation, metal radiation Unit Design has been become the symmetrical ladder-type structure of class, effective broadening antenna standing wave ratio bandwidth, achieves the relative standing-wave ratio bandwidth of 1.6GHz-14.8Ghz;
(2) the present invention is ensureing under the prerequisite that microstrip antenna standing-wave ratio bandwidth is not reduced, adopt T-shaped and symmetrical L shape metal minor matters in circle, the trap function on antenna structure is have effectively achieved in 3.3GHz-3.7GHz and 5.0GHz-5.9Ghz two frequency ranges, make the electromagnetic wave of antenna to these two frequency ranges have filter action significantly, thus inhibit different wireless communication system disturb effect mutually;
(3) ultra-wideband antenna of the present invention can obtain full frequency band constant gain and full frequency band omnidirectional radiation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna;
Fig. 2 is the structural representation of the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna;
Fig. 3 is the standing-wave ratio Parameter Map of the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna;
Fig. 4 is that the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna is in 4GHz gain pattern;
Fig. 5 is that the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna is in 5GHz gain pattern;
Fig. 6 is that the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna is in 8GHz gain pattern;
Fig. 7 is the peak gain figure of the present invention's small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna;
In figure, 1, medium substrate, 2, feed line, 3, ground plate, 4, metal radiation unit.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiments of the invention are described, but should be appreciated that these describe just as further illustrating the features and advantages of the present invention instead of limiting to the claimed invention.
As illustrated in fig. 1 and 2, small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna of the present invention, comprises medium substrate 1, feed line 2, ground plate 3 and metal radiation unit 4.Wherein, feed line 2, ground plate 3 and metal radiation unit 4 are set in the upper surface of medium substrate 1, and feed line 2 and metal radiation unit 4 are all symmetrical relative to the axis of medium substrate 1, and ground plate 3 is symmetricly set on the both sides of feed line 2.Feed line 2 is for receiving electromagnetic wave, and ground plate 3 and feed line 2 form coplanar waveguide structure, and make electromagnetic wave along gap propagation between the two, play the effect of forward direction guided electromagnetic wave, metal radiation unit 4 is for radiated electromagnetic wave.Metal radiation unit 4 comprises class symmetric trapezium unit, T-shaped metal minor matters and L shape metal minor matters, and class symmetric trapezium unit is connected successively from top to bottom by ten rectangle sheet metals and rearranges, and ten rectangle sheet metals from top to bottom, long are respectively 6mm, 12mm, 17mm, 22mm, 24mm, 22mm, 17mm, 12mm, 9mm, 6mm, is widely respectively 1.5mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2.5mm, 2mm; The two ends on the upper base of the 5th rectangle sheet metal are connected to L shape metal minor matters, L shape metal minor matters are inverted L-shaped sheet metal, the horizontal end of L shape metal minor matters holds the length of side equal with perpendicular, the horizontal end length of side is 7mm, horizontal end and perpendicular end width are 0.5mm, the end of the perpendicular end of L shape metal minor matters is connected with the upper base of the 5th rectangle sheet metal, and the outer side edges of the perpendicular end of L shape metal minor matters is alignd with the broadside of the 5th rectangle sheet metal; Class symmetric trapezium unit is provided with manhole, and the distance of center circle of manhole is 3mm from the vertical range on the 9th rectangular upper base, and the radius of manhole is 4.5mm; Be provided with T-shaped metal minor matters in manhole, T-shaped metal minor matters are T-shaped sheet metal, the long 6mm of horizontal end, the long 2mm of perpendicular end, and horizontal end and perpendicular end width are 0.5mm, and the end of the perpendicular end of T-shaped metal minor matters is connected with the 9th rectangle sheet metal; Feed line 2 is rectangle sheet metal, width is 2.8mm, length is 11.5mm, the both sides, long limit of feed line 2 arrange ground plate 3 respectively, ground plate 3 is two rectangle sheet metals, long limit is 11.5mm, broadside is 11.2mm, the long limit of feed line 2 is parallel with the long limit of ground plate 3, the vertical interval on adjacent feed line 2 and the parallel long limit of ground plate 3 is 0.4mm, one article of broadside of feed line 2 is connected with the long limit of the tenth rectangle sheet metal of class symmetric trapezium unit, and another broadside of feed line 2 and the long limit of ground plate 3 are point-blank; Ground plate 3 is being provided with always open near feed line 2 and metal radiation unit 4 junction, and two always open length are 2.2mm, is widely 1.5mm, and always open long limit is parallel with the broadside of ground plate 3.
In present embodiment, feed line 2, ten rectangle sheet metals, two L shape metal minor matters and T-shaped metal minor matters integrated molding.
In present embodiment, medium substrate 1 is selected as FR-4, and dielectric constant is 4.4, and loss angle tangent is 0.01, and thickness is 1mm, overall antenna length 32mm, beam overall 26mm; Mentioned sheet metal is copper sheet.Present embodiment antenna adopts thermal transfer preparation: the layers of copper on medium substrate 1 surface testing dielectric constant is carried out polishing and cuts open light process, the structural model of antenna in printing, vernier caliper determination antenna size, according to size cutting medium substrate 1, the antenna produced is put into corrosive liquid, through side-to-side vibrations in 5 minutes corrosion, layers of copper unnecessary for antenna surface is gone, namely completes the preparation of small-sized plane ultra-wideband antenna.
Detect the performance of the antenna prepared, test result as shown in fig. 3 to 7.
Fig. 3 is the standing-wave ratio Parameter Map of antenna, when standing-wave ratio parameter is less than 2, illustrate that antenna standing wave amount is little, there is good radiation characteristic, and standing-wave ratio is when being greater than 2, illustrate that the electromagnetic wave through aerial radiation cannot produce outside radiation characteristic effectively, therefore as can be seen from Figure 3, antenna can cover the bandwidth range of rfid system and ultra-wideband communication system defined effectively, realizes the filtering characteristic of other communication systems to 3.3Ghz-3.7Ghz and 5.0Ghz-5.9Ghz two frequency ranges that WiMax, WLAN etc. apply simultaneously.
Fig. 4-6 is respectively the gain pattern of antenna at 4GHz, 6GHz and 8GHz, and as can be seen from the figure, the main polarization directional diagram of the main frequency of antenna in the frequency band range that radio ultra wide band system is applied, close to circle, illustrates that antenna has the characteristic of omnidirectional radiation.
Fig. 7 is the peak gain figure of antenna at 2GHz-11GHz, as can be seen from the figure, antenna has the constant gain of about 2dB in non-band resistance band limits, and in 3.3Ghz-3.7Ghz and 5.0Ghz-5.9Ghz two frequency ranges, significantly declining appears in peak gain, illustrate that antenna is very low at these two band gains, outside radiation effect can not be played, thus achieve the belt-resistance function to these two frequency band signals.
Obviously, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that the those of ordinary skill for described technical field, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
Claims (5)
1. small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna, comprising:
Medium substrate (1);
Be set in described medium substrate (1) upper surface and for receiving electromagnetic feed line (2);
Be set in described medium substrate (1) upper surface and for the metal radiation unit (4) of radiated electromagnetic wave;
Be fixed on described medium substrate (1) upper surface and symmetry is set in the ground plate (3) of feed line (2) both sides;
It is characterized in that,
Described feed line (2) and metal radiation unit (4) are all symmetrical relative to the axis of medium substrate (1);
Described metal radiation unit (4) comprises class symmetric trapezium unit, T-shaped metal minor matters and L shape metal minor matters;
Described class symmetric trapezium unit is connected successively from top to bottom by ten rectangle sheet metals and rearranges, and described ten rectangle sheet metals from top to bottom, long are respectively 6mm, 12mm, 17mm, 22mm, 24mm, 22mm, 17mm, 12mm, 9mm, 6mm, widely be respectively 1.5mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2mm, 2.5mm, 2mm;
The two ends on the long limit of the 5th rectangle sheet metal are connected to L shape metal minor matters, described L shape metal minor matters are inverted L-shaped sheet metal, the horizontal end of L shape metal minor matters holds the length of side equal with perpendicular, the horizontal end length of side is 7mm, the horizontal end of L shape metal minor matters is 0.5mm with the perpendicular width held, the end of the perpendicular end of L shape metal minor matters is connected with the long limit of the 5th rectangle sheet metal, and the outer side edges of the perpendicular end of L shape metal minor matters is alignd with the broadside of the 5th rectangle sheet metal;
Be provided with manhole in described class symmetric trapezium unit, the distance of center circle of manhole is 3mm from the vertical range on the upper base of the 9th rectangle sheet metal, and the radius of manhole is 4.5mm;
T-shaped metal minor matters are provided with in described manhole, T-shaped metal minor matters are T-shaped sheet metal, the long 6mm of horizontal end of T-shaped metal minor matters, the long 2mm of perpendicular end, the horizontal end of T-shaped metal minor matters is 0.5mm with the perpendicular width held, and the end of the perpendicular end of T-shaped metal minor matters is connected with the 9th rectangle sheet metal;
Described feed line (2) is rectangle sheet metal, described ground plate (3) is two rectangle sheet metals, one article of broadside of feed line (2) is connected with the long limit of the tenth rectangle sheet metal, another broadside of feed line (2) and the broadside of ground plate (3) are on same straight line, the long limit of ground plate (3) is parallel with the long limit of feed line (2), and ground plate (3) is being provided with always open near feed line (2) and metal radiation unit (4) junction.
2. small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna according to claim 1, it is characterized in that, the long limit of described feed line (2) is 11.5mm, and broadside is 2.8mm.
3. small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna according to claim 1, it is characterized in that, described ground plate (3) is that two long limits are 11.5mm, and broadside is the rectangle sheet metal of 11.2mm.
4. small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna according to claim 3, it is characterized in that, the always open length of two of described ground plate (3) is 2.2mm, is widely 1.5mm, and two always open long limits are parallel with the broadside of ground plate (3).
5. small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna according to claim 1, it is characterized in that, described sheet metal is copper sheet.
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| CN201410115028.XA CN103943953B (en) | 2014-03-26 | 2014-03-26 | Small-sized L-T minor matters biobelt resistance plane ultra-wideband antenna |
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| CN103943953B true CN103943953B (en) | 2016-04-27 |
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| CN104993225B (en) * | 2015-06-23 | 2017-10-20 | 浙江工商大学 | A kind of miniaturization G type monopole antennas applied to WLAN |
| CN105226379A (en) * | 2015-08-25 | 2016-01-06 | 中国航空无线电电子研究所 | A kind of miniaturization broadband micro-strip array antenna |
| CN105071032A (en) * | 2015-08-25 | 2015-11-18 | 中国航空无线电电子研究所 | Miniaturization broadband microstrip antenna |
| CN107403992A (en) * | 2016-05-20 | 2017-11-28 | 中兴通讯股份有限公司 | A kind of antenna and terminal device |
| CN106252852A (en) * | 2016-09-18 | 2016-12-21 | 北京石油化工学院 | Monopole ultra-wideband antenna |
| CN108742643B (en) * | 2018-08-27 | 2023-10-17 | 天津大学 | Ultra-wideband antenna suitable for human blood sugar concentration detection |
| CN112216970B (en) * | 2020-09-25 | 2023-02-24 | 杭州泛利科技有限公司 | Miniaturized high-gain flexible unmanned aerial vehicle antenna |
| CN112332083A (en) * | 2020-10-16 | 2021-02-05 | 杭州电子科技大学 | Broadband omnidirectional trapped wave low-profile antenna |
| CN112768945B (en) * | 2020-12-30 | 2024-11-01 | 辽宁工程技术大学 | Miniaturized teapot-shaped ultra-wideband antenna |
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