CN201956456U - Small size three-frequency planar antenna of loading zero-resonance unit - Google Patents
Small size three-frequency planar antenna of loading zero-resonance unit Download PDFInfo
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- CN201956456U CN201956456U CN 201020585917 CN201020585917U CN201956456U CN 201956456 U CN201956456 U CN 201956456U CN 201020585917 CN201020585917 CN 201020585917 CN 201020585917 U CN201020585917 U CN 201020585917U CN 201956456 U CN201956456 U CN 201956456U
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Abstract
The utility model discloses a small size three-frequency planar antenna of a loading zero-resonance unit, which comprises an upper-layer micro-strip structure, a bottom-layer medim base plate and an input and output port. The upper-layer micro-strip structure comprises a coplanar waveguide transmission line, a monopole antenna, a loading interdigital capacitor and a grounding fine line inductor, wherein one terminal of the coplanar waveguide transmission line is connected with the input and output port, and the other terminal of the coplanar waveguide transmission line is directly fed into the monopole antenna; the loading interdigital capacitor and the grounding fine line inductor are arranged at one terminal of the monopole antenna; the grounding fine line inductor is connected with the floor; the loading interdigital capacitor, the grounding fine line inductor and the monopole antenna form the zero-resonance unit; and the upper-layer micro-strip structure is arranged on the bottom-layer medium base plate. By forming the zero-resonance unit on the basis of a monopole, the small size three-frequency planar antenna can introduce newer low resonance frequency under the condition that the original operation frequency of the monopole is not changed, overcomes the problems that the volume of the monopole is large, the monopole is complex in process and the like, and has the advantages that the size is small, the structure is simple, the process is easy and the like.
Description
Technical field
The utility model belongs to the design field of wireless telecommunications system midplane antenna, particularly a kind of small-sized three-frequency plane antenna that loads zero resonant element.
Background technology
Along with mobile communication rapid development, especially flat plane antenna is as the transceiving device of radio communication terminal for antenna, and people have proposed more and more higher requirement to its performance.Simultaneously when WLAN (wireless local area network) at present is used widely because of its flexibility and mobility, how under the situation that does not increase antenna size, design the focus that the small size antenna that adapts to multiband becomes research.
The method for designing of multi-frequency plane antenna mainly contains methods such as planar inverted-F antenna, slot antenna and various forms of monopole antennas at present, it is exactly to break away from the qualification of resonance frequency to antenna size that there is the problem of a general character in these methods, therefore further miniaturization Design, this just needs the new mentality of designing of searching to design the miniature antenna of multiband.
Chinese invention patent CN101350451A discloses a kind of plane reverse F type tri-frequency antennae, this invention is applicable to the reception and the emission of notebook computer wireless network signal, specifically comprise: the grounding parts of a strip metal plate, this grounding parts one end is fixed in notebook computer inside by setting fixed part, the other end is connected with the wireless network card of notebook inside by access portion is set, above between the grounding parts two ends, be provided with an emission acceptance division, this emission acceptance division is connected with an end of grounding parts, and this emission acceptance division comprises that three emission receiving elements are respectively applied for reception and send three different frequency range wireless network signals.This invention mainly is applicable to notebook computer, and range of application is narrower, and is to adopt compound mode, three groups of Transmit-Receive Units of falling F that are operated in different frequency range is combined further miniaturization.
Anisotropic media is as a kind of new type of microwave structure, has unique electromagnetic property, and as negative index, negative Doppler effect, contrary Qi Lunkefu radiation etc., it has obtained application more and more widely in the design of all kinds of microwave devices and exploitation.Anisotropic media is specially the form of composite right/left-handed transmission line in planar circuit, is generally periodic structure, and zero resonance is a critical nature of composite right/left-handed transmission line.
Therefore, how zero resonant element is applied to become in the small-sized three-frequency plane antenna problem that has theoretical and real value.
The utility model content
Main purpose of the present utility model is to overcome the shortcoming of prior art with not enough, a kind of small-sized three-frequency plane antenna that loads zero resonant element is provided, its have compact dimensions, simple in structure, be easy to advantages such as processing, be particularly useful for the WLAN of WiFi and WiMAX.
The purpose of this utility model realizes by following technical scheme: a kind of small-sized three-frequency plane antenna that loads zero resonant element comprises upper strata microstrip structure, bottom medium substrate and input/output port; Described upper strata microstrip structure comprises co-planar waveguide (coplanar waveguide, CPW) transmission line, monopole antenna, loading interdigital capacitor, ground connection fine rule inductance, described coplanar waveguide transmission line one end links to each other with input/output port, the other end directly is fed into monopole antenna, monopole antenna one end is provided with and loads interdigital capacitor and ground connection fine rule inductance, and ground connection fine rule inductance and floor join; Described loading interdigital capacitor, ground connection fine rule inductance, monopole antenna constitute one zero resonant element; Described upper strata microstrip structure is arranged on the bottom medium substrate.
Described monopole antenna forms by cracking and loads interdigital capacitor.
Described loading interdigital capacitor and the series connection of ground connection fine rule inductance.
Described coplanar waveguide transmission line is 50 ohm transmission line.
Described input/output port is one.
Described monopole antenna is according to the wavelength decision of high band.
The quantity of described loading interdigital capacitor increases or reduces according to needed zero resonance frequency, is used to control resonance point.
The relative dielectric constant of described bottom medium substrate is 1-100, and thickness is 0.1mm-5mm.
Described input/output port adopts the standard sub-miniature A connector, and impedance is 50 ohm.
The utility model compared with prior art has following advantage and beneficial effect:
1, the utility model is by loading interdigital capacitor and ground connection fine rule inductance, on the basis of monopole, form one zero resonant element, can under the situation that does not change former monopole operating frequency, introduce new lower resonance frequency, overcome problems such as the monopole antenna volume is big, processed complex, have size little, simple in structure, be easy to advantage such as processing.
2, the electric capacity in zero resonant element uses interdigital realization in the utility model, effectively introduced the needed stray inductance of anisotropic media series loop, realized two zeroth order resonance (effective permeability and effective dielectric constant are respectively zero), a structure has been introduced two resonance frequencys.
3, the utility model adopts coplanar wave guide feedback, and antenna structure all is in same plane, so the ground connection inductance need not punching, handling ease, and cost is low, is convenient to other circuit integrated.
Description of drawings
Fig. 1 is a structure perspective view of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, a kind of small-sized three-frequency plane antenna that loads zero resonant element comprises upper strata microstrip structure, bottom medium substrate 10 and input/output port 13; Described upper strata microstrip structure comprises coplanar waveguide transmission line 11, monopole antenna 20, loads interdigital capacitor 21, ground connection fine rule inductance 22, described coplanar waveguide transmission line 11 1 ends link to each other with input/output port 13, the other end directly is fed into monopole antenna 20, monopole antenna 20 1 ends are provided with and load interdigital capacitor 21 and ground connection fine rule inductance 22, and ground connection fine rule inductance 22 joins with floor 12; Described loading interdigital capacitor 21, ground connection fine rule inductance 22, monopole antenna 20 constitute one zero resonant element; Described upper strata microstrip structure is arranged on the bottom medium substrate 10.
Described monopole antenna 20 forms by cracking and loads interdigital capacitor 21.
Described loading interdigital capacitor 21 and 22 series connection of ground connection fine rule inductance.
Described coplanar waveguide transmission line 11 is 50 ohm transmission line.
Described input/output port 13 is one.
Described monopole antenna 20 is according to the wavelength decision of high band.
The quantity of described loading interdigital capacitor 21 increases or reduces according to needed zero resonance frequency, is used to control resonance point.
The relative dielectric constant of described bottom medium substrate 10 is 4.4, and thickness is 1.6mm.
Described input/output port 13 adopts the standard sub-miniature A connector, and impedance is 50 ohm.
In the utility model, load interdigital capacitor 21 and ground connection fine rule inductance 22 and constitute one zero resonant element structure together with monopole antenna 20, this structure can be operated in respectively+0 rank and-0 rank resonance, thereby form two passbands, the combining main body monopole antenna just can be realized the performance of three frequencies.
Embodiment 2
Present embodiment except that following characteristics other structures with embodiment 1: the relative dielectric constant of described bottom medium substrate is 1, and thickness is 0.1mm.
Embodiment 3
Present embodiment except that following characteristics other structures with embodiment 1: the relative dielectric constant of described bottom medium substrate is 100, and thickness is 5mm.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (9)
1. a small-sized three-frequency plane antenna that loads zero resonant element is characterized in that, comprises upper strata microstrip structure, bottom medium substrate and input/output port; Described upper strata microstrip structure comprises coplanar waveguide transmission line, monopole antenna, loading interdigital capacitor, ground connection fine rule inductance, described coplanar waveguide transmission line one end links to each other with input/output port, the other end directly is fed into monopole antenna, monopole antenna one end is provided with and loads interdigital capacitor and ground connection fine rule inductance, and ground connection fine rule inductance and floor join; Described loading interdigital capacitor, ground connection fine rule inductance, monopole antenna constitute one zero resonant element; Described upper strata microstrip structure is arranged on the bottom medium substrate.
2. the small-sized three-frequency plane antenna of loading according to claim 1 zero resonant element is characterized in that, described monopole antenna forms by cracking and loads interdigital capacitor.
3. the small-sized three-frequency plane antenna of loading according to claim 2 zero resonant element is characterized in that, described loading interdigital capacitor and the series connection of ground connection fine rule inductance.
4. the small-sized three-frequency plane antenna of loading according to claim 1 zero resonant element is characterized in that described coplanar waveguide transmission line is 50 ohm transmission line.
5. the small-sized three-frequency plane antenna of loading according to claim 1 zero resonant element is characterized in that described input/output port is one.
6. the small-sized three-frequency plane antenna of loading according to claim 2 zero resonant element is characterized in that, described monopole antenna is according to the wavelength decision of high band.
7. the small-sized three-frequency plane antenna of loading according to claim 3 zero resonant element is characterized in that, the quantity of described loading interdigital capacitor increases or reduces according to needed zero resonance frequency, is used to control resonance point.
8. the small-sized three-frequency plane antenna of loading according to claim 1 zero resonant element is characterized in that the relative dielectric constant of described bottom medium substrate is 1-100, and thickness is 0.1mm-5mm.
9. the small-sized three-frequency plane antenna of loading according to claim 5 zero resonant element is characterized in that described input/output port adopts the standard sub-miniature A connector, and impedance is 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020585917 CN201956456U (en) | 2010-10-28 | 2010-10-28 | Small size three-frequency planar antenna of loading zero-resonance unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020585917 CN201956456U (en) | 2010-10-28 | 2010-10-28 | Small size three-frequency planar antenna of loading zero-resonance unit |
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| Publication Number | Publication Date |
|---|---|
| CN201956456U true CN201956456U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020585917 Expired - Fee Related CN201956456U (en) | 2010-10-28 | 2010-10-28 | Small size three-frequency planar antenna of loading zero-resonance unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570043A (en) * | 2012-01-18 | 2012-07-11 | 华南理工大学 | Multi-polarization microstrip patch antenna loading zero-order resonator |
| CN110828967A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | Multi-frequency miniaturized folding monopole antenna with loading grounding LC structure |
| CN112751185A (en) * | 2020-12-29 | 2021-05-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
-
2010
- 2010-10-28 CN CN 201020585917 patent/CN201956456U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570043A (en) * | 2012-01-18 | 2012-07-11 | 华南理工大学 | Multi-polarization microstrip patch antenna loading zero-order resonator |
| CN102570043B (en) * | 2012-01-18 | 2014-05-07 | 华南理工大学 | Multi-polarization microstrip patch antenna loading zero-order resonator |
| CN110828967A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | Multi-frequency miniaturized folding monopole antenna with loading grounding LC structure |
| CN112751185A (en) * | 2020-12-29 | 2021-05-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
| CN112751185B (en) * | 2020-12-29 | 2022-04-08 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model |