CN200972896Y - Microstrip antenna - Google Patents
Microstrip antenna Download PDFInfo
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- CN200972896Y CN200972896Y CN 200620108971 CN200620108971U CN200972896Y CN 200972896 Y CN200972896 Y CN 200972896Y CN 200620108971 CN200620108971 CN 200620108971 CN 200620108971 U CN200620108971 U CN 200620108971U CN 200972896 Y CN200972896 Y CN 200972896Y
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- microstrip line
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Abstract
The utility model relates to an antenna working at the microwave frequency band. To inhibit the interference produced by higher harmonics, the prior art is mainly to add filters to the antenna and other components in the circuit. This involves a high cost, a large size and an increased high-frequency loss. The utility model comprises a media substrate. One side of the media substrate is provided with a metal layer as the ground, and the other side is provided with a dented sheet metal used as a patch antenna unit and a microstrip line used as the feeder wire. The microstrip line is connected with the dent of the sheet metal. Both sides of the microstrip line are symmetrically provided with artificial electromagnetic media materials that are adhered on the media substrate. The utility model can realize a forbidden band within a certain working frequency range, and thus fulfill the purpose of inhibiting higher harmonics.
Description
Technical field
The utility model belongs to communication technique field, and particularly a kind of antenna that works in microwave frequency band by loading novel artificial electromagnetic medium material at the feeder line two ends, thereby suppresses common Harmonic Interference under the high frequency situations.
Background technology
The demand for development transceiver terminal of Modern wireless communication technology is keeping under the constant prerequisite of whole system performance, and whole system is compact more, low cost.The traditional method of realizing above-mentioned requirements is exactly the integrated level of raising system, but except first-harmonic, antenna can produce high order harmonic component in reception/transmission signal process, and makes electromagnetic interference (the Electromagnetic Interference EMI) problem worse of internal system device.In order to suppress the interference of high order harmonic component, usually between antenna and other devices of circuit such as amplifier, add a filter, but the result who does like this is exactly the cost that has improved circuit, increased the volume capacity of entire circuit, and since must be between antenna and filter, amplifier the more connector of interpolation, further increased the circuit volume, destroyed the coupling of Circuits System and increased high-frequency loss.And, the function of original antenna system is adversely affected, as makes the directivity variation of antenna owing to add the influence of filter.
Summary of the invention
The utility model is at the deficiencies in the prior art, a kind of microstrip antenna is provided, by common paster antenna (patch antenna) is integrated with at present popular novel artificial electromagnetic medium material, suppressed high order harmonic component, and improved the electromagnetism antijamming capability of integrated circuit.
Another purpose of the present utility model is to provide a kind of antenna, so that make the volume-diminished of antenna place circuit, lowers occupation space.
Another purpose of the present utility model is to provide a kind of antenna, can reduce the connector between antenna in the traditional circuit, filter, the amplifier etc., reduces the high-frequency loss of circuit, and keeps the performance of original antenna system.
For achieving the above object, microstrip antenna of the present utility model comprises dielectric substrate, at the one side adhesion metal layer of dielectric substrate as ground, another side adheres to one as the concave metal sheet of patch antenna element with as the microstrip line of feeder line, microstrip line is connected with the indent of sheet metal, be provided with the artificial electromagnetic dielectric material in the microstrip line bilateral symmetry, the artificial electromagnetic dielectric material is attached on the dielectric substrate.
Described artificial electromagnetic dielectric material is attached to the sheet metal on the dielectric substrate, the concentric ring (split-ring resonator/SRR) that the becket that is shaped as a pair of band opening of this sheet metal constitutes, the aperture position of two beckets is all on the vertical direction of the plane of microstrip line, and aperture position is opposite; Two concentric ring shapes of microstrip line both sides are identical, and the aperture position correspondence.
The position that the artificial electromagnetic dielectric material loads at the microstrip feed line two ends is by calculating electromagnetism software (as HFSS, CST etc.) analog computation, near the reflection coefficient (S11) that makes antenna minimum operating frequency (be generally less than-10dB get final product), its position is placed on the antenna that makes after the whole loading and reaches impedance matching at this moment.This technology is a mature technology.
The artificial electromagnetic medium, the left-handed materials that is otherwise known as in the field of business (Left-handed Material), negative material (Negative Refraction Material/Matematerial).Two beckets can equivalent inductance capacitance resonant cavity of conduct under the excitation of time-varying magnetic field in this kind material.In particular frequency range, can realize negative index and have left hand high pass characteristic (left-handed high-passstopband) and right hand low-pass characteristic (right-handed high-pass stopband).By the length of change ring, and the size of opening, the i.e. resonance frequency of may command resonant ring.
According to the utility model, because this kind novel artificial electromagnetic medium material has left hand high pass characteristic and right hand low-pass characteristic, therefore in certain operating frequency range, can realize forbidden band (stoping the transmission of the signal of certain frequency scope), thereby can reach the purpose that suppresses high order harmonic component.In addition and since this kind novel artificial electromagnetic medium material be fully by sheet metal attached on the dielectric substrate, therefore it is loaded on the feeder two ends, can additionally not increase original antenna volume.And, needn't additionally add lead or other connectors, thereby reduce the high-frequency loss of circuit owing to be the feeder line two ends that load on original antenna only.
For the ease of understanding structure of the present utility model, function, feature and working mechanism, be elaborated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structure chart of existing patch antenna element;
Fig. 2 is the structure of the antenna element of an embodiment of the present utility model;
Fig. 3 is the reflection coefficient (S11) of existing patch antenna element;
Fig. 4 is the reflection coefficient (S11) of the antenna element of an embodiment of the present utility model;
Fig. 5-the 1st, the directional diagram (2.6GHz) of the antenna element E face of existing patch antenna element and embodiments of the invention, wherein dotted line is represented existing paster antenna, and solid line is represented the antenna of embodiment of the present utility model;
Fig. 5-the 2nd, the directional diagram (2.6GHz) of the antenna element H face of existing patch antenna element and embodiments of the invention, wherein dotted line is represented existing paster antenna, and solid line is represented the antenna of embodiment of the present utility model.
Embodiment
The structure of the existing patch antenna element of representing referring to Fig. 1.Antenna comprises dielectric substrate 11, and what this substrate adopted is the higher material of dielectric coefficient, is 10.2 material such as relative dielectric coefficient.As ground, another side adheres to a concave metal sheet 12 as patch antenna element at the one side adhesion metal layer of dielectric substrate 11.Microstrip feed line 13 is connected with the indent of sheet metal.
Fig. 2 is the structure of the antenna element of an embodiment of the present utility model.Antenna comprises dielectric substrate 21, and what this substrate adopted is the higher material of dielectric coefficient, is 10.2 material such as relative dielectric coefficient.As ground, another side adheres to a concave metal sheet 22 as patch antenna element at the one side adhesion metal layer of dielectric substrate 21.Microstrip feed line 23 is connected with the indent of sheet metal, is provided with the artificial electromagnetic dielectric material in microstrip feed line 23 bilateral symmetry, and the artificial electromagnetic dielectric material is attached on the dielectric substrate 21.
Described artificial electromagnetic dielectric material is attached to the sheet metal on the dielectric substrate 21 24, the concentric ring (split-ringresonator/SRR) that the becket that is shaped as a pair of band opening of this sheet metal 24 constitutes, the aperture position of two beckets is all on the vertical direction of the plane of microstrip feed line 23, and aperture position is opposite; Two concentric ring shapes of microstrip feed line 23 both sides are identical, and the aperture position correspondence.
The position that the artificial electromagnetic dielectric material loads at the microstrip feed line two ends is by calculating electromagnetism software (as HFSS, CST etc.) analog computation, near the reflection coefficient (S11) that makes antenna minimum operating frequency (be generally less than-10dB get final product), its position is placed on the antenna that makes after the whole loading and reaches impedance matching at this moment.This technology is a mature technology.
As previously mentioned, by the length of control ring, and the size of opening, i.e. the resonance frequency of scalable resonant ring, the energy gap of regulating its generation then.In the present embodiment, the groundwork frequency of antenna is 2.6GHz, and then the frequency of 2 rank of Chan Shenging and 3 rank high order harmonic components is followed successively by 5.2GHz, 7.8GHz.The resonance frequency of the split ring resonator in the present embodiment is also near 5.2GHz and 7.8GHz.When signal enters antenna system by feeder line,, filter out these high-order harmonic waves, enter the radiant body of antenna more earlier by this resonator.Thereby avoided the interference of high-order harmonic wave.
Fig. 3 is the reflection coefficient (S11) of existing patch antenna element, therefrom can see antenna except be lower than near the reflection coefficient the groundwork frequency-10dB, near the reflection coefficient 2 rank and 3 order harmonicses also is lower than-10dB.After having loaded this novel artificial electromagnetic medium material, as shown in Figure 4, near the reflection coefficient 2 rank of antenna and 3 order harmonicses all improves a lot, and shows that 2 rank and 3 order harmonicses are by filtering.
Fig. 5-1 and Fig. 5-2 is respectively the antenna pattern of antenna element under the groundwork frequency of existing patch antenna element and embodiments of the invention, both compare, can see after having loaded novel artificial electromagnetic medium material, except filtering the high order harmonic component of disturbing, do not influence original service behaviour of antenna.
In sum,, can keep systematic function constant, and not increase under the situation of system bulk, suppress high-frequency harmonic common in the microwave system and disturb according to the utility model.Owing to the connector that does not need additionally to add between filter and other devices, reduce system cost simultaneously, reduced extra high-frequency loss.
Claims (1)
1, a kind of novel microstrip antenna, comprise dielectric substrate, at the one side adhesion metal layer of dielectric substrate as ground, another side adheres to as the concave metal sheet of patch antenna element with as the microstrip line of feeder line, microstrip line is connected with the indent of sheet metal, it is characterized in that being provided with the artificial electromagnetic dielectric material in the microstrip line bilateral symmetry; Described artificial electromagnetic dielectric material is attached to the sheet metal on the dielectric substrate, and the concentric ring that the becket that is shaped as a pair of band opening of this sheet metal constitutes, the aperture position of two beckets are all on the vertical direction of the plane of microstrip line, and aperture position is opposite; Two concentric ring shapes of microstrip line both sides are identical, and the aperture position correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108971 CN200972896Y (en) | 2006-10-26 | 2006-10-26 | Microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108971 CN200972896Y (en) | 2006-10-26 | 2006-10-26 | Microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200972896Y true CN200972896Y (en) | 2007-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620108971 Expired - Fee Related CN200972896Y (en) | 2006-10-26 | 2006-10-26 | Microstrip antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN200972896Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986456A (en) * | 2010-11-05 | 2011-03-16 | 华南理工大学 | Ultra wide band filter with trap characteristics |
| CN102255125A (en) * | 2010-09-21 | 2011-11-23 | 上海大学 | Novel double-frequency narrow-band bandpass filter |
| CN102800948A (en) * | 2011-06-29 | 2012-11-28 | 深圳光启高等理工研究院 | Antenna and wireless communication device |
| CN110133375A (en) * | 2019-05-10 | 2019-08-16 | 杭州电子科技大学 | Microwave remote sensor for synchro measure magnetic media material dielectric constant and magnetic conductivity |
| CN110829012A (en) * | 2019-11-19 | 2020-02-21 | 中北大学 | Monopole antenna based on artificial electromagnetic material |
-
2006
- 2006-10-26 CN CN 200620108971 patent/CN200972896Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255125A (en) * | 2010-09-21 | 2011-11-23 | 上海大学 | Novel double-frequency narrow-band bandpass filter |
| CN102255125B (en) * | 2010-09-21 | 2014-10-01 | 上海大学 | Novel double-frequency narrow-band bandpass filter |
| CN101986456A (en) * | 2010-11-05 | 2011-03-16 | 华南理工大学 | Ultra wide band filter with trap characteristics |
| CN102800948A (en) * | 2011-06-29 | 2012-11-28 | 深圳光启高等理工研究院 | Antenna and wireless communication device |
| CN102800948B (en) * | 2011-06-29 | 2015-08-12 | 深圳光启高等理工研究院 | Antenna and wireless communication apparatus |
| CN110133375A (en) * | 2019-05-10 | 2019-08-16 | 杭州电子科技大学 | Microwave remote sensor for synchro measure magnetic media material dielectric constant and magnetic conductivity |
| CN110829012A (en) * | 2019-11-19 | 2020-02-21 | 中北大学 | Monopole antenna based on artificial electromagnetic material |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |