CN202712416U - Ultra wideband antenna - Google Patents
Ultra wideband antenna Download PDFInfo
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- CN202712416U CN202712416U CN 201220072721 CN201220072721U CN202712416U CN 202712416 U CN202712416 U CN 202712416U CN 201220072721 CN201220072721 CN 201220072721 CN 201220072721 U CN201220072721 U CN 201220072721U CN 202712416 U CN202712416 U CN 202712416U
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Abstract
The utility model discloses an ultra wideband antenna. The antenna comprises a medium substrate (1), a radiation unit (2), coplanar waveguide ground planes (3) and a coplanar waveguide feed microstrip line (4). The radiation unit (2), the coplanar waveguide ground planes (3) and the coplanar waveguide feed microstrip line (4) are printed on a positive surface of the medium substrate (1). Two resonance rings (5) and (6) with complementation openings are etched on the radiation unit (2). Three are two coplanar waveguide ground planes (3) which are located on two sides of the coplanar waveguide feed microstrip line (4) respectively. Two pairs of inverted-L gaps (7) and (8) are etched on the coplanar waveguide ground planes (3). The opening resonance rings (5) and (6) and inverted-L gaps (7) and (8) form four notch frequency ranges. A working frequency range of the utility model covers2-12GHz so that an interference signal in an ultra wideband working frequency range can be well inhibited. The antenna can be used in ultra-wideband wireless communication.
Description
Technical field
The utility model belongs to antenna technical field, and particularly a kind of ultra-wideband antenna with four trap characteristics is applied to super broad band radio communication system.
Background technology
Ultra broadband UWB technology is a kind of novel wireless communication technology, has the characteristics such as transmission rate is high, low in energy consumption, system configuration is simple, thereby becomes one of study hotspot of radio communication in recent years.As the critical component of ultra-wideband communication system, the characteristic of ultra-wideband antenna will directly affect the transmission performance of system, and will be significant to its research and design.The FCC of FCC approval was with the working frequency range of 3.1-10.6GHz as radio ultra wide band system in 2002, yet may have the narrow-band interference signal of some wireless communication systems in this frequency range, such as frequency range be positioned at that the worldwide interoperability for microwave access WiMax of 3.3-3.6GHz and frequency range are positioned near the 2.4GHz, the WLAN (wireless local area network) WLAN of 5.15-5.35GHz, 5.725-5.825GHz etc.Therefore, ultra-wideband antenna must produce trap in these frequency ranges, with the interference problem of avoiding existing.In order to suppress the potential interference between radio ultra wide band system and the narrowband systems, usually need in radio ultra wide band system, introduce band stop filter, but this will increase volume, complexity and the cost of system undoubtedly.
Another kind of simple effective method is to introduce the trap structure in ultra-wideband antenna, makes antenna produce larger reflection in interference band, suppresses the transmission of interference band signal.The trap structure is included in the difform slit of etching on the radiating element of antenna or the floor, perhaps introduces parasitic minor matters etc. in antenna structure.For example number of patent application is 201020271241.7, patent name is the Chinese patent of " a kind of ultra-wideband antenna with interference signal filtering function ", a kind of ultra-wideband antenna with single trap characteristic has been proposed, the radiating element of antenna is a microstrip-fed fan-shaped monopole, monopole produces the ultra broadband characteristic thus, antenna cover frequency range 3GHz-10.6GHz, simultaneously opened a U-shaped slit at fan-shaped monopole, this slit forms trap in the 4.85-5.95GHz frequency range, but this utility model only filtering the interference of a frequency band signals of WLAN.And for example number of patent application is 201020531935.X, patent name is the Chinese patent of " with the ultra-wideband antenna of trap characteristic ", a kind of ultra-wideband antenna with two trap characteristics has been proposed, this antenna is made of microstrip-fed rectangular radiation unit and co-planar waveguide ground plane, by the double-U-shaped groove of etching and rectangular channel have formed 3.8GHz-6GHz respectively on radiating element and floor, 7.5GHz-9GHz two trap wave bands, but the trap band bandwidth is wide in this utility model, the band limits that has far exceeded interference signal, this has caused the reduction of the working frequency range of ultra-wideband antenna own undoubtedly.For another example document " Planar Ultrawideband Antennas WithMultiple Notched Bands Based on Etched Slots on the Patch and/or Split Ring Resonators on the Feed Line; Yan Zhang; Wei Hong; Chen Yu; Zhen-Qi Kuai; Yu-Dan Don, and Jian-Yi Zhou, IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL.56, NO.9, SEPTEMBER 2008 " a kind of ultra-wideband antenna with three trap characteristics of middle design; the radiating element of antenna is a microstrip-fed circular monopole has formed 2.24GHz-2.62GHz, the trap of 3.78GHz-4.03GHz and 5.94GHz-6.4GHz frequency range by the open-loop resonator that loads 3 pairs of different sizes in the feeder line both sides; but less than normal than generally at trap frequency range standing internal wave; the filtering performance deviation, the twin nuclei of open-loop resonator is complicated simultaneously, is not easy to design and debugging.
The utility model content
The utility model purpose is the deficiency for above-mentioned prior art existence, a kind of bandwidth is provided, gain is large, miniaturization, the easy ultra-wideband antenna with four trap characteristics of processing, in the 2-12GHz frequency range, making standing-wave ratio all less than 2, the covering ultra wideband working frequency range, and can filtering WiMax and the interference signal of WLAN frequency range, realize high-quality super broad band radio communication.
For achieving the above object, the utility model comprises: medium substrate, radiating element, co-planar waveguide ground plane and coplanar wave guide feedback microstrip line, radiating element, co-planar waveguide ground plane and coplanar wave guide feedback microstrip line all are printed on the front surface of medium substrate, structure axisymmetricly is characterized in that:
Described radiating element links to each other with the top of coplanar wave guide feedback microstrip line, is etched with two complementary openings resonant rings on it, two ring openings in the same way, mutually nested, the center of circle overlaps, and has formed two traps that frequency range is positioned at 2.32-2.7GHz and 3.35-3.78GHz;
Described co-planar waveguide ground plane is made as two, lays respectively at the both sides of coplanar wave guide feedback microstrip line, and and the coplanar wave guide feedback microstrip line between be provided with clearance t, the value of t is 0.1mm-1mm; Be etched with two pairs of inverted L shape slits on this co-planar waveguide ground plane, the slit is towards identical, formed two traps that frequency range is positioned at 5.02-5.45GHz and 5.7-6.22GHz.
Described radiating element is circle or ellipse or rectangular patch.
Two of etching complementary openings resonant rings on the described radiating element, circle or ellipse or the rectangle of employing opening, the A/F value is 0.2mm-4mm.
The radius value of described complementary openings resonant ring is 3mm-9mm, and the ring width value is 0.1mm-2mm.
The radius value of described complementary openings resonant ring is 2mm-8mm, and the ring width value is 0.1mm-2mm.
Described two co-planar waveguide ground planes are the circular arc angle near a side of radiating element, cut the triangle angle away from a side of radiating element, and being cut leg-of-mutton two right-angle side values is 4mm-7mm.
The horizontal minor matters length value in described inverted L shape slit is 3mm-12mm, and the width value is 0.1mm-2mm, and vertical minor matters length value is 3mm-18mm, and the width value is 0.1mm-2mm.
The horizontal minor matters length value in described inverted L shape slit is 3mm-12mm, and the width value is 0.1mm-2mm, and vertical minor matters length value is 3mm-18mm, and the width value is 0.1mm-2mm.
The dielectric constant of described medium substrate is between 2-9.8, and dielectric substrate thickness is 0.5mm-3mm, and dielectric loss is less than 10
-2
Compared with prior art, the utlity model has following advantage:
1, the utility model since on radiating element two complementary openings resonant ring centers of circle of etching overlap, mutually nested, reduced the area of the required radiating element of antenna.
2, the utility model since on the co-planar waveguide ground plane two inverted L shape slits of etching towards identical, mutually nested, reduced the area on the required floor of antenna.
3, the utility model is owing to adopting the coplanar wave guide feedback structure, and two co-planar waveguide ground planes are the circular arc angle near a side of radiating elements, cuts the triangle angle away from a side of radiating element, thereby improved the high-frequency resistance matching properties in the working frequency range.
4, the utility model is owing to adopting the coplanar wave guide feedback structure, and floor and radiating element are printed on the same side of medium substrate, and be simple in structure, is convenient to the microwave circuit of radio-frequency front-end integrated.
5, the utility model since by etching complementary openings resonant ring on the radiating element and on the floor etching inverted L shape slit formed four trap frequency ranges, effectively filtering the narrow-band interference signal in the ultra broadband band limits, filter effect is better.
6, the utility model adopts complementary openings resonant ring and inverted L shape gap structure, has replaced the design of filter, has reduced design cost and system complexity, and is compact small and exquisite, easy to process, with low cost so that antenna structure is simple, is convenient to produce.
7, the utility model can improve according to the actual requirements voluntarily, by regulating the size in radiating element, complementary openings resonant ring and inverted L shape slit, changes antenna performance, various interference signals in the filtering frequency band, have the trap tunable performance, satisfy different applicable cases, improve one's methods simple.
Description of drawings
Fig. 1 is the front view of the utility model embodiment 1;
Fig. 2 is the end view of the utility model embodiment 1;
Fig. 3 is the front view of the utility model embodiment 2;
Fig. 4 is the front view of the utility model embodiment 3;
Fig. 5 is the simulate and test standing wave curve chart of the utility model embodiment 1;
Fig. 6 is that the utility model embodiment 1 is at the testing radiation directional diagram of 2GHz;
Fig. 7 is that the utility model embodiment 1 is at the testing radiation directional diagram of 5GHz;
Fig. 8 is that the utility model embodiment 1 is at the testing radiation directional diagram of 7GHz;
Fig. 9 is the test gain curve figure of the utility model embodiment 1.
Specific implementation method:
Below in conjunction with embodiment and accompanying drawing, the utility model is described further:
Embodiment 1:
Referring to Fig. 1 and Fig. 2, ultra-wideband antenna of the present utility model, comprise: medium substrate 1, radiating element 2, co-planar waveguide ground plane 3 and coplanar wave guide feedback microstrip line 4, this radiating element 2, co-planar waveguide ground plane 3 and coplanar wave guide feedback microstrip line 4 all are printed on the front surface of medium substrate 1.Radiating element 2 is circular patch, links to each other with the top of coplanar wave guide feedback microstrip line 4, is etched with two complementary openings resonant rings 5 and 6 on this radiating element 2, two rings adopt the round-shaped of opening, opening upwards, and the center of circle overlaps, mutually nested, the length of ring is 1/2 of respective resonant frequencies wavelength, namely
L wherein
nLong for the ring of complementary openings resonant ring, c is the light velocity, f
nBe trap centre frequency, ε
EffBe effective dielectric constant.According to above-mentioned formula, the ring that can calculate two complementary openings resonant rings 5 and 6 is long, and then determines radius and the ring width of two rings.The A/F of complementary openings resonant ring is not too large on the impact of trap characteristic, can be between 0.2mm-3mm Set arbitrarily, prerequisite is that the overall length that guarantees ring remains unchanged substantially.In order to obtain more accurate size, can be optimized debugging by Electromagnetic Simulation software HFSS.Ultra-wideband antenna in this example, complementary openings resonant ring 5 and 6 have formed respectively two traps that frequency range is positioned at 2.32-2.7GHz and 3.35-3.78GHz, the centre frequency f of trap
nBe respectively 2.4GHz and 3.5GHz, two ring sizes are as follows: the radius of complementary openings resonant ring 5 is 7.6mm, and ring width is 0.2mm, and ring opening part width is 0.2mm; The radius of complementary openings resonant ring 6 is 5.5mm, and ring width is 0.9mm, and ring opening part width is 0.2mm.By regulating the size of complementary openings resonant ring, can change the frequency range of trap, for example the radius of complementary openings resonant ring 5 is 8mm, and ring width is 0.3mm, and when ring opening part width was 1mm, the trap frequency range that this ring produces was positioned at 2-3GHz; The radius of complementary openings resonant ring 6 is 6mm, and ring width is 0.3mm, and when ring opening part width was 1mm, the trap frequency range that this ring produces was positioned at 3.1-3.9GHz.
Co-planar waveguide ground plane 3 is made as two, lay respectively at the both sides of coplanar wave guide feedback microstrip line 4, and and be provided with clearance t between the coplanar wave guide feedback microstrip line 4, the value of t is 0.1mm-1mm, by regulating the size of t, impedance matching property that can Optimization Work frequency range internal antenna, the value of t is 0.2mm in this example.Two co-planar waveguide ground planes 3 are the circular arc angle near a side of radiating elements 2, cut the triangle angle away from a side of radiating element 2, by regulating arc and leg-of-mutton size, improve the impedance matching property of the interior high frequency of working frequency range.Arc radius is 0.5mm in this example, and being cut leg-of-mutton two right-angle sides is 6mm.Be etched with two pairs of inverted L shape slits 7 and 8 on this co-planar waveguide ground plane 3, these two slits are mutually nested, and towards identical, and length is 1/4 of respective resonant frequencies wavelength, namely
L wherein
nBe the overall length in inverted L shape slit, c is the light velocity, f
nBe trap centre frequency, ε
EffBe effective dielectric constant.According to this formula, can calculate the length of two pairs of inverted L shape slits 7 and 8.In order to obtain more accurate size, can be optimized debugging by Electromagnetic Simulation software HFSS.Ultra-wideband antenna in this example, inverted L shape slit 7 and 8 have formed respectively two traps that frequency range is positioned at 5.02-5.45GHz and 5.7-6.22GHz, the centre frequency f of trap
nBe respectively 5.2GHz and 5.8GHz, gap size is as follows: the length of the horizontal minor matters in inverted L shape slit 7 is 4.9mm, and width is 0.5mm, and the length of vertical minor matters is 13.5mm, and width is 0.25mm; The length of the horizontal minor matters in inverted L shape slit 8 is 14.7mm, and width is 0.5mm, and the length of vertical minor matters is 6.8mm, and width is 0.25mm.By regulating the size in inverted L shape slit, can change the frequency range of trap, for example the length of the horizontal minor matters in inverted L shape slit 7 is 5.1mm, width is 0.5mm, the length of vertical minor matters is 13.8mm, and when width was 0.25mm, the trap frequency range of generation was positioned at 4.9-5.35GHz; The length of the horizontal minor matters in inverted L shape slit 8 is 15mm, and width is 0.5mm, and the length of vertical minor matters is 7mm, and when width was 0.25mm, the trap frequency range of generation was positioned at 5.55-5.9GHz.
The complementary openings resonant ring 5 and 6 of described radiating element 2, co-planar waveguide ground plane 3, coplanar wave guide feedback microstrip line 4 and institute's etching, inverted L shape slit 7 and 8 are all about the axis of medium substrate 1 structure axisymmetricly.
The dielectric constant of described medium substrate 1 is 2.65, and substrate thickness is 1mm, and dielectric loss is 0.0015.
Two complementary openings resonant rings 5 of etching and 6 are not limited to circular configuration on the described radiating element 2, also can adopt ellipse or rectangle or the curve shape of opening.
Embodiment 2:
Referring to Fig. 3, the radiating element 2 of ultra-wideband antenna is rectangular patch in the present embodiment, two complementary openings resonant rings 5 of etching and 6 adopt the rectangular shape of openings on this radiating element 2, all the other structures are the same with ultra-wideband antenna among the embodiment 1, and the relation between each structure is also the same with ultra-wideband antenna in the embodiment 1.
Two complementary openings resonant rings 5 of etching and 6 are not limited to rectangular configuration on the described radiating element 2, also can adopt circle or ellipse or the curve shape of opening.
Embodiment 3:
Referring to Fig. 4, the radiating element 2 of ultra-wideband antenna is oval paster in the present embodiment, two complementary openings resonant rings 5 of etching and 6 adopt the elliptical shape of openings on this radiating element 2, all the other structures are the same with ultra-wideband antenna among the embodiment 1, and the relation between each structure is also the same with ultra-wideband antenna in the embodiment 1.
Two complementary openings resonant rings 5 of etching and 6 are not limited to ellipsoidal structure on the described radiating element 2, also can adopt circle or rectangle or the curve shape of opening.
Effect of the present utility model can further specify by following resolution chart:
Standing-wave ratio to the utility model embodiment 1 is tested, its result as shown in Figure 5, by the test standing wave curve chart of Fig. 5 as seen, ultra-wideband antenna working frequency range of the present utility model covers 2-12GHz, and four traps have been formed, the trap frequency range has covered respectively 2.3-2.5GHz, 3.3-3.6GHz, 5.15-5.35GHz and 5.725-5.825GHz.
To the utility model embodiment 1 at 2GHz, the antenna pattern of 5GHz and 7GHz is tested respectively, its result such as Fig. 6, Fig. 7, shown in Figure 8, by the testing radiation directional diagram of Fig. 6, Fig. 7, Fig. 8 as seen, ultra-wideband antenna of the present utility model has horizontal omnidirectional.
Gain to the utility model embodiment 1 is tested, its result as shown in Figure 9, by the test gain curve figure of Fig. 9 as seen, the gain of ultra-wideband antenna of the present utility model is between the 2-6dBi in working frequency range substantially, significantly descend in the gain of the centre frequency place of trap frequency range, antenna is worked hardly at trap frequency range place, has reached the effect that suppresses interference.
Claims (9)
1. ultra-wideband antenna, comprise: medium substrate (1), radiating element (2), co-planar waveguide ground plane (3) and coplanar wave guide feedback microstrip line (4), this radiating element (2), co-planar waveguide ground plane (3) and coplanar wave guide feedback microstrip line (4) all are printed on the front surface of medium substrate (1), structure axisymmetricly is characterized in that:
Described radiating element (2) links to each other with the top of coplanar wave guide feedback microstrip line (4), be etched with two complementary openings resonant rings (5 on this radiating element, 6), two the ring openings in the same way, mutually nested, the center of circle overlaps, and has formed two traps of frequency range covering 2.32-2.7GHz and 3.35-3.78GHz;
Described co-planar waveguide ground plane (3) is made as two, lay respectively at the both sides of coplanar wave guide feedback microstrip line (4), and and be provided with clearance t between the coplanar wave guide feedback microstrip line (4), the value of t is 0.1mm-1mm, be etched with two pairs of inverted L shape slits (7 on this co-planar waveguide ground plane (3), 8), the slit has formed two traps of frequency range covering 5.02-5.45GHz and 5.7-6.22GHz towards identical.
2. ultra-wideband antenna according to claim 1, it is characterized in that: radiating element (2) is circle or ellipse or rectangular patch.
3. ultra-wideband antenna according to claim 1 is characterized in that: two complementary openings resonant rings (5,6) of the upper etching of radiating element (2), adopt circle or ellipse or rectangle or the curve shape of opening, and the value of A/F is 0.2mm-4mm.
4. ultra-wideband antenna according to claim 1, it is characterized in that: the radius value of complementary openings resonant ring (5) is 3mm-9mm, the ring width value is 0.1mm-2mm.
5. ultra-wideband antenna according to claim 1, it is characterized in that: the radius value of complementary openings resonant ring (6) is 2mm-8mm, the ring width value is 0.1mm-2mm.
6. ultra-wideband antenna according to claim 1, it is characterized in that: two co-planar waveguide ground planes (3) are the circular arc angle near a side of radiating element (2), side away from radiating element (2) cuts the triangle angle, and being cut leg-of-mutton two right-angle side values is 4mm-7mm.
7. ultra-wideband antenna according to claim 1, it is characterized in that: the length value of the horizontal minor matters of inverted L shape slit (7) is 3mm-12mm, and the width value is 0.1mm-2mm, and the length value of vertical minor matters is 3mm-18mm, and the width value is 0.1mm-2mm.
8. ultra-wideband antenna according to claim 1, it is characterized in that: the length value of the horizontal minor matters of inverted L shape slit (8) is 3mm-12mm, the width value is 0.1mm-2mm, and the length value of vertical minor matters is 3mm-18mm, and the width value is 0.1mm-2mm.
9. ultra-wideband antenna according to claim 1, it is characterized in that: the dielectric constant of medium substrate (1) is between 2-9.8, and dielectric substrate thickness is 0.5mm-3mm, and dielectric loss is less than 10
-2
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220072721 CN202712416U (en) | 2012-03-01 | 2012-03-01 | Ultra wideband antenna |
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| CN 201220072721 CN202712416U (en) | 2012-03-01 | 2012-03-01 | Ultra wideband antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103259096A (en) * | 2013-05-16 | 2013-08-21 | 厦门大学 | Oval intersecting nesting multi-loop recursive microstrip antenna for compass system |
| CN103606744A (en) * | 2013-11-07 | 2014-02-26 | 中国计量学院 | Dual concentric opening circular patch 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 |
| CN107369917A (en) * | 2017-09-22 | 2017-11-21 | 电子科技大学 | A kind of narrow slot ultra-wideband antenna |
| CN108390152A (en) * | 2018-04-22 | 2018-08-10 | 吉林医药学院 | A kind of elliptical ring combination three band planar slot antenna of shape |
| CN110970723A (en) * | 2019-12-25 | 2020-04-07 | 贵州民族大学 | Four trapped wave ultra wide band antenna structures of microstrip feed |
| CN112003022A (en) * | 2020-09-27 | 2020-11-27 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112436274A (en) * | 2020-10-26 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Coplanar waveguide multi-band microstrip antenna |
| CN113206377A (en) * | 2021-05-06 | 2021-08-03 | 安徽大学 | Four-trapped-wave flexible wearable ultra-wideband antenna fed by coplanar waveguide |
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2012
- 2012-03-01 CN CN 201220072721 patent/CN202712416U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259096A (en) * | 2013-05-16 | 2013-08-21 | 厦门大学 | Oval intersecting nesting multi-loop recursive microstrip antenna for compass system |
| CN103606744A (en) * | 2013-11-07 | 2014-02-26 | 中国计量学院 | Dual concentric opening circular patch antenna |
| CN103606744B (en) * | 2013-11-07 | 2015-06-03 | 中国计量学院 | Dual concentric opening circular patch 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 |
| CN107369917B (en) * | 2017-09-22 | 2019-06-04 | 电子科技大学 | A kind of narrow slot ultra-wideband antenna |
| CN107369917A (en) * | 2017-09-22 | 2017-11-21 | 电子科技大学 | A kind of narrow slot ultra-wideband antenna |
| CN108390152A (en) * | 2018-04-22 | 2018-08-10 | 吉林医药学院 | A kind of elliptical ring combination three band planar slot antenna of shape |
| CN108390152B (en) * | 2018-04-22 | 2023-12-15 | 吉林医药学院 | Elliptical ring combined three-broadband planar slot antenna |
| CN110970723A (en) * | 2019-12-25 | 2020-04-07 | 贵州民族大学 | Four trapped wave ultra wide band antenna structures of microstrip feed |
| CN110970723B (en) * | 2019-12-25 | 2023-12-08 | 贵州民族大学 | Microstrip feed four-notch ultra-wideband antenna structure |
| CN112003022A (en) * | 2020-09-27 | 2020-11-27 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112003022B (en) * | 2020-09-27 | 2023-05-23 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112436274A (en) * | 2020-10-26 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Coplanar waveguide multi-band microstrip antenna |
| CN113206377A (en) * | 2021-05-06 | 2021-08-03 | 安徽大学 | Four-trapped-wave flexible wearable ultra-wideband antenna fed by coplanar waveguide |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20190301 |