CN203644938U - Difference coplanar waveguide UWB wide-slot trapped wave antenna possessing high stop band characteristic - Google Patents
Difference coplanar waveguide UWB wide-slot trapped wave antenna possessing high stop band characteristic Download PDFInfo
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- CN203644938U CN203644938U CN201320772835.XU CN201320772835U CN203644938U CN 203644938 U CN203644938 U CN 203644938U CN 201320772835 U CN201320772835 U CN 201320772835U CN 203644938 U CN203644938 U CN 203644938U
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Abstract
The utility model discloses a difference coplanar waveguide UWB wide-slot trapped wave antenna possessing a high stop band characteristic. The difference coplanar waveguide UWB wide-slot trapped wave antenna possessing the high stop band characteristic comprises a dielectric substrate, and the right side of the dielectric substrate is equipped with a first feed circuit, a second feed circuit and a wide-slot ground structure. The first and second feed circuits are symmetrical left and right to form a difference coplanar waveguide feed structure, the first feed circuit comprises a first feed port, a first microstrip feed line and a first irradiator, and the second feed circuit comprises a second feed port, a second microstrip feed line and a second irradiator. The first irradiator is connected with the first feed port via the first microstrip feed line, and the second irradiator is connected with the second feed port via the second microstrip feed line. The upper part and lower part of a polygonal wide-slot inner side of the wide-slot ground structure are equipped with a first resonance branch and a second resonance branch respectively, and the first and second resonance branches are symmetrical up and down. The antenna of the utility model is simple in structure, and can realize a trapped wave function.
Description
Technical field
The utility model relates to the wide gap of a kind of difference co-planar waveguide UWB trap antenna, and the especially a kind of wide gap of difference co-planar waveguide UWB trap antenna with high stopband characteristic, belongs to wireless communication field.
Background technology
Along with the development of wireless communication technology, miniaturization, the high integration demand of wireless communication system to radio-frequency devices is more and more stronger.At present, radio circuit adopts differential technique signal transmission conventionally, and a lot of radio-frequency front-end devices can directly be integrated on transponder chip.But as the important devices of radio-frequency (RF) front-end circuit, antenna great majority are designed to single port device, can not be directly and difference channel integrated, conventionally need to adopt Ba Lun that differential signal is converted to then feed antenna of single port signal.The use of Ba Lun can cause loss, and system effectiveness is reduced, and has also increased the quantity of individual devices, is unfavorable for the integrated and miniaturization of system height.
Differential antennae has changed the single port method for designing of traditional antenna, is dual-port form by Antenna Design, directly two ports of differential signal feed antenna.Differential antennae can be directly and difference channel integrated, reduced the use of barron device part, improve system effectiveness, simultaneously also for the radio-frequency front-end device of design high integration provides better solution.
In UWB communication system, traditional single port radiation pattern can obviously worsen along with increasing of frequency, and difference wide-slot antenna can be realized good antenna pattern, only have at present several money difference UWB antennas can meet the requirement of UWB communication system performance both at home and abroad.With regard to feeding classification, coplanar wave guide feedback form is than other feeding classifications are easier and circuit is integrated, but the difference UWB antenna occurring at present does not also adopt coplanar wave guide feedback form.Because the 5.5GHz frequency range of the communications band of UWB and the 5.2GHz/5.8GHz of WLAN and WiMAX has produced overlapping, disturb mutually in order not produce communication, just be necessary to realize trap characteristic in these frequency ranges, but also do not there is trap characteristic in the difference UWB antenna occurring at present.
With understanding, current disclosed prior art is as follows according to investigations:
1) 2008, H.-J.Zhou, B.-H.Sun, the people such as Q.-Zh.Liu deliver at " ELECTRONICS LETTERS " in the article that is entitled as " Implementation and investigation of U-shaped aperture UWB antenna with dual band-notched characteristics ", use traditional single port antenna design method, adopt feed microstrip line mode, by etching gap in radiation patch, and increase resonance minor matters in inner side, wide gap, realize two trap characteristics.But the rectangular degree of trap is not fine, and trap frequency be not easy control, the antenna pattern of antenna neither be very desirable, its structure as shown in Figure 1.
2) 2012, Li Li, Jing Yang, Xinwei Chen, the people such as Xiaowei Zhang deliver at " IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION " in the article that is entitled as " Ultra-Wideband Differential Wide-Slot Antenna With Improved Radiation Patterns and Gain ", adopt difference feed microstrip line mode, utilize symmetrical radiation patch to carry out feed to wide gap, realize ultrabroad band, compared with traditional single port antenna, this difference UWB antenna has been realized good antenna pattern and good gain in whole frequency band, but the antenna in this article does not adopt coplanar wave guide feedback mode, do not realize trap characteristic yet, its structure as shown in Figures 2 and 3.
Utility model content
The purpose of this utility model is the defect in order to solve above-mentioned prior art, provide a kind of simple in structure, volume is little, cost is low, and can realize the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic of trap function.
The purpose of this utility model can be by taking following technical scheme to reach:
There is the wide gap of the difference co-planar waveguide UWB trap antenna of high stopband characteristic, comprise medium substrate, it is characterized in that: the front of described medium substrate is provided with the first feed circuit, the second feed circuit and wide gap earth construction described the first feed circuit and the symmetrical formation difference of the second feed circuit coplanar wave guide feedback structure; Described the first feed circuit comprises the first feed port, the first microstrip feed line and the first radiant body, described the second feed circuit comprises the second feed port, the second microstrip feed line and the second radiant body, described the first radiant body is connected with the first feed port by the first microstrip feed line, and described the second radiant body is connected with the second feed port by the second microstrip feed line; The upper and lower of the inner side, the wide gap of polygon on the earth construction of described wide gap is respectively equipped with the first resonance minor matters and the second resonance minor matters, and described the first resonance minor matters and the second resonance minor matters are symmetrical up and down.
As a kind of preferred version, described the first resonance minor matters and the second resonance minor matters are wedge structure.
As a kind of preferred version, described the first resonance minor matters and the second resonance minor matters are 1/2 wave resonance minor matters.
As a kind of preferred version, the back side of described medium substrate is provided with symmetrical the 3rd resonance minor matters and the 4th resonance minor matters; Described the first feed circuit also comprises the first via hole, and described the second feed circuit also comprises the second via hole, and described the first microstrip feed line is connected with the 3rd resonance minor matters by the first via hole, and described the second microstrip feed line is connected with the 4th resonance minor matters by the second via hole.
As a kind of preferred version, described the 3rd resonance minor matters and the 4th resonance minor matters are rectangular configuration.
As a kind of preferred version, described the 3rd resonance minor matters and the 4th resonance minor matters are 1/4 wave resonance minor matters.
As a kind of preferred version, described the first radiant body and the second radiant body are the circular configuration with rectangular indentation.
As a kind of preferred version, described medium substrate is that relative dielectric constant is 2.55 medium substrate.
As a kind of preferred version, the characteristic impedance of described the first microstrip feed line and the second microstrip feed line is 50 Ω.
The utility model has following beneficial effect with respect to prior art:
1, the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna adopts difference coplanar wave guide feedback structure, compared with existing single port UWB antenna, in whole UWB frequency range, there is better antenna pattern, and compared with existing difference UWB antenna, more easily and difference channel integrated.
2, the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna adopts one group of resonance minor matters can realize trap function, adopt the combination of two groups of resonance minor matters to realize trap function to have the trap characteristic of good rectangular degree, compared with existing difference UWB antenna, eliminate disturbing mutually of UWB communication system and WLAN and WiMAX communication system.
3, the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna adopts planar structure, and it is simple in structure, and volume is little, and cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of the first prior art.
Fig. 2 is the Facad structure schematic diagram of the second prior art.
Fig. 3 is the side structure schematic diagram of the second prior art.
Fig. 4 is the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna face structural representation.
Fig. 5 is the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna structure schematic diagram.
Fig. 6 is that the wide gap of difference co-planar waveguide UWB of the present utility model trap antenna is by the strange mould reflection coefficient chart of Electromagnetic Simulation.
Wherein, the wide gap of 1-earth construction, 2-the first feed port, 3-the first microstrip feed line, 4-the first radiant body, 5-the first via hole, 6-the second feed port, 7-the second microstrip feed line, 8-the second radiant body, 9-the second via hole, the wide gap of 10-polygon, 11-the first resonance minor matters, 12-the second resonance minor matters, 13-the 3rd resonance minor matters, 14-the 4th resonance minor matters.
Embodiment
Embodiment 1:
As shown in Figure 4 and Figure 5, the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic of the present embodiment, comprise medium substrate, the front of described medium substrate is provided with the first feed circuit, the second feed circuit and wide gap earth construction 1, described the first feed circuit and the symmetrical formation difference of the second feed circuit coplanar wave guide feedback structure; Described the first feed circuit comprises the first feed port 2, the first microstrip feed line 3, the first radiant body 4 and the first via hole 5, described the second feed circuit comprises the second feed port 6, the second microstrip feed line 7, the second radiant body 8 and the second via hole 9, described the first radiant body 4 is connected with the first feed port 2 by the first microstrip feed line 3, and described the second radiant body 8 is connected with the second feed port 6 by the second microstrip feed line 7; The upper and lower of 10 inner sides, the wide gap of polygon of described wide gap earth construction 1 is respectively equipped with the first resonance minor matters 11 and the second resonance minor matters 12, and described the first resonance minor matters 11 and the second resonance minor matters are symmetrical Shang Xia 12; The back side of described medium substrate is provided with symmetrical the 3rd resonance minor matters 13 and the 4th resonance minor matters 14, described the first microstrip feed line 3 is connected with the 3rd resonance minor matters 13 by the first via hole 5, and described the second microstrip feed line 7 is connected with the 4th resonance minor matters 14 by the second via hole 9; Wherein:
Described medium substrate is that relative dielectric constant is 2.55 medium substrate.
Described the first feed port 2 and the second feed port 6 form differential pair, and difference feed-in amplitude equates, the differential signal of single spin-echo.
The characteristic impedance of described the first microstrip feed line 3 and the second microstrip feed line 7 is 50 Ω, just with carry out feed and mate.
Described the first radiant body 4 and the second radiant body 8 are for giving the wide gap of polygon 10 feeds, be the circular configuration with rectangular indentation, circular configuration can be realized better gradual change, by removing the less part of circular patch top electric current, form rectangular indentation, thereby realize better impedance matching.
The wide gap 10 of described polygon has good gradually changeable, can produce multiple modes of resonance, thereby has realized the work of 2.23GHz～11.95GHz ultra broadband.
Described the first resonance minor matters 11 and the second resonance minor matters 12 are the 1/2 wave resonance minor matters that adopt wedge structure, for realizing trap function; Described the 3rd resonance minor matters 13 and the 4th resonance minor matters 14 are the 1/4 wave resonance minor matters that adopt rectangular configuration, for realizing trap function; Described the first resonance minor matters 11, the second resonance minor matters 12, the 3rd resonance minor matters 13 and the 4th resonance minor matters 14 combinations realize trap function and have the trap characteristic of good rectangular degree, can control sunken wave frequency by the length of adjusting the first resonance minor matters 11, the second resonance minor matters 12, the 3rd resonance minor matters 13 and the 4th resonance minor matters 14.
The strange mould reflection coefficient curve of the wide gap of the difference co-planar waveguide UWB trap antenna Electromagnetic Simulation with high stopband characteristic of the present embodiment as shown in Figure 6.
The above; it is only the utility model preferred embodiment; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in scope disclosed in the utility model; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, all being belonged to protection range of the present utility model.
Claims (9)
1. there is the wide gap of the difference co-planar waveguide UWB trap antenna of high stopband characteristic, comprise medium substrate, it is characterized in that: the front of described medium substrate is provided with the first feed circuit, the second feed circuit and wide gap earth construction described the first feed circuit and the symmetrical formation difference of the second feed circuit coplanar wave guide feedback structure; Described the first feed circuit comprises the first feed port, the first microstrip feed line and the first radiant body, described the second feed circuit comprises the second feed port, the second microstrip feed line and the second radiant body, described the first radiant body is connected with the first feed port by the first microstrip feed line, and described the second radiant body is connected with the second feed port by the second microstrip feed line; The upper and lower of the inner side, the wide gap of polygon on the earth construction of described wide gap is respectively equipped with the first resonance minor matters and the second resonance minor matters, and described the first resonance minor matters and the second resonance minor matters are symmetrical up and down.
2. the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic according to claim 1, is characterized in that: described the first resonance minor matters and the second resonance minor matters are wedge structure.
3. the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic according to claim 1, is characterized in that: described the first resonance minor matters and the second resonance minor matters are 1/2 wave resonance minor matters.
4. the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic according to claim 1, is characterized in that: the back side of described medium substrate is provided with symmetrical the 3rd resonance minor matters and the 4th resonance minor matters; Described the first feed circuit also comprises the first via hole, and described the second feed circuit also comprises the second via hole, and described the first microstrip feed line is connected with the 3rd resonance minor matters by the first via hole, and described the second microstrip feed line is connected with the 4th resonance minor matters by the second via hole.
5. the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic according to claim 4, is characterized in that: described the 3rd resonance minor matters and the 4th resonance minor matters are rectangular configuration.
6. the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic according to claim 4, is characterized in that: described the 3rd resonance minor matters and the 4th resonance minor matters are 1/4 wave resonance minor matters.
7. according to the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic described in claim 1-6 any one, it is characterized in that: described the first radiant body and the second radiant body are the circular configuration with rectangular indentation.
8. according to the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic described in claim 1-6 any one, it is characterized in that: described medium substrate is that relative dielectric constant is 2.55 medium substrate.
9. according to the wide gap of the difference co-planar waveguide UWB trap antenna with high stopband characteristic described in claim 1-6 any one, it is characterized in that: the characteristic impedance of described the first microstrip feed line and the second microstrip feed line is 50 Ω.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772835.XU CN203644938U (en) | 2013-11-28 | 2013-11-28 | Difference coplanar waveguide UWB wide-slot trapped wave antenna possessing high stop band characteristic |
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| CN201320772835.XU CN203644938U (en) | 2013-11-28 | 2013-11-28 | Difference coplanar waveguide UWB wide-slot trapped wave antenna possessing high stop band characteristic |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633425A (en) * | 2013-11-28 | 2014-03-12 | 华南理工大学 | Difference coplanar waveguide UWB (Ultra Wide Band) wide slot trapped wave antenna with high attenuation band characteristic |
| 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 |
| CN113889754A (en) * | 2021-09-29 | 2022-01-04 | 重庆大学 | Compact single-layer differential feed filtering transparent antenna |
| CN114464998A (en) * | 2022-03-30 | 2022-05-10 | 安徽大学 | Millimeter wave double-split ring slot antenna with coplanar waveguide feed |
-
2013
- 2013-11-28 CN CN201320772835.XU patent/CN203644938U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633425A (en) * | 2013-11-28 | 2014-03-12 | 华南理工大学 | Difference coplanar waveguide UWB (Ultra Wide Band) wide slot trapped wave antenna with high attenuation band characteristic |
| 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 |
| CN113889754A (en) * | 2021-09-29 | 2022-01-04 | 重庆大学 | Compact single-layer differential feed filtering transparent antenna |
| CN113889754B (en) * | 2021-09-29 | 2023-12-19 | 重庆大学 | Compact single-layer differential feed filtering transparent antenna |
| CN114464998A (en) * | 2022-03-30 | 2022-05-10 | 安徽大学 | Millimeter wave double-split ring slot antenna with coplanar waveguide feed |
| CN114464998B (en) * | 2022-03-30 | 2024-03-12 | 安徽大学 | Millimeter wave double-split-ring slot antenna fed by coplanar waveguide |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20150701 |
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| RGAV | Abandon patent right to avoid regrant |