CN205231252U - UWB antenna with dual stop band function - Google Patents
UWB antenna with dual stop band function Download PDFInfo
- Publication number
- CN205231252U CN205231252U CN201521049324.0U CN201521049324U CN205231252U CN 205231252 U CN205231252 U CN 205231252U CN 201521049324 U CN201521049324 U CN 201521049324U CN 205231252 U CN205231252 U CN 205231252U
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- radiating element
- antenna
- uwb
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Abstract
The utility model provides a UWB antenna with dual stop band function, relates to trapped wave period number in the UWB band stop antenna of WLAN, wiMAX frequency channel frequently. This antenna is by medium base plate (106), radiating element (101), impedance match input microstrip line (102) on the medium base plate, DGS structure (107), be carved with H shape groove (103) on radiating element (101) on the medium base plate, the DGS structure comprises T -slot (104) and square groove structure (105). The utility model discloses utilize radiating element, impedance match input microstrip line, realize the passband bandwidth that UWB required with metal grounding plate, utilize circular radiating element to improve stopband attenuation and restrain, utilize the H shape groove realization band -stop characteristic on DGS structure and the radiating element. The utility model relates to an antenna stopband has avoided the mutual interference with WLAN system, wiMAX system near 3.7GHz and 5.75GHz.
Description
Technical field
The utility model relates to a kind of UWB and is with resistance antenna, especially a kind of UWB antenna with dual-attenuation function is related to, this antenna can suppress radio ultra wide band system to WiMAX system (3.3-3.7GHz), wlan system (5.15-5.35GHz), the interference of (5.725-5.825GHz).
Background technology
In February, 2002, FCC (FCC) ratifies 3.1-10.6GHz frequency range for business telecommunication, and therefore UWB is widely used.
But, the frequency band covered due to ultra-wideband communications is wider, some frequency band and other wireless system band sharing resource, likely mutually disturb with other system, as WiMAX system (3.3-3.7GHz) and wlan system (5.15-5.35GHz), (5.725-5.825GHz).How to solve co-channel interference and become UWB research important content, the ultra-wideband antenna therefore with stopband characteristic has very high practical value.
There is the mentality of designing of a lot of ultra wide band resistance antenna in recent years, as in radiation patch, fluting, dielectric-slab back side parasitic metal paster, increase open loop resonant cavity, design work form stopband etc. mutually at the antenna of different frequency bands.But these methods all exist limitation, such as antenna volume is large, is unfavorable for the system integration; The centre frequency of stopband not easily regulates.In the utility model, adopt the DGS structure being subject to extensive concern in recent years, form band-stop response.
Defect ground structure (DGS-defectedgroundstructure) is formed by the figure of etching defect on ground plate, on ground plate, the figure of etching defect can upset the distribution of bucking current on floor, the CURRENT DISTRIBUTION changing upset can change the characteristic of transmission line, as: effective inductance and effective capacitance, the microstrip line be made up of DGS being has slow wave characteristic and band-stop response.
The structure of DGS is made up of defective unit, its band gap center frequency only defectiveness unit decision, therefore, DGS is smaller and more exquisite, be easy to Electromagnetic Field Analysis and equivalent electric circuit modeling analysis simultaneously, the characteristic of DGS can be used for compact and new circuit structure of harmonics restraint, denoising, structure etc., in microblogging millimetre integrated circuit, have certain advantage.
Utility model content
The purpose of this utility model is to provide a kind of novel dual-attenuation UWB antenna, and this antenna can suppress the mutual interference of UWB system and wlan system, WiMAX system.
The technical scheme that the utility model adopts:
The utility model comprises medium substrate (106), the radiating element (101) be formed on medium substrate, impedance matching input microstrip line (102), DGS structure (107); Radiating element (101) on described medium substrate is carved with H-shaped groove (103), and DGS structure is made up of T-slot (104) and square groove structure (105).
Described a kind of UWB antenna with dual-attenuation function, is characterized in that, the H-shaped groove on radiating element (101) is simultaneously symmetrical in upper and lower symmetry about junction.
Described a kind of UWB antenna with dual-attenuation function, it is characterized in that, in DGS structure (107), two T-slots (104) are symmetric, two square groove (105) are symmetric.
Described a kind of UWB antenna with dual-attenuation function, it is characterized in that, radiating element (101) is circular patch.
Described a kind of UWB antenna with dual-attenuation function, is characterized in that, medium substrate (106) adopts FR4 material.
Described a kind of UWB antenna with dual-attenuation function, it is characterized in that, the frequency of described stopband, respectively near 3.7GHz and 5.75GHz, avoids the interference problem with WiMAX system (3.3-3.7GHz), wlan system (5.725-5.825GHz).
This utility model antenna has following characteristic and advantage relative to existing antenna:
Simplicity of design, compact conformation, easy to process, with low cost.
The increase of DGS structure, defines second stopband, and has the narrow advantage of bandwidth of rejection.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the utility model embodiment 1.
Fig. 2 is the basic structure front schematic view of the utility model embodiment 1.
Fig. 3 is the DGS structural representation of the utility model embodiment 1.
Fig. 4 is the basic structure side schematic view of the utility model embodiment 1.
Embodiment
The utility model devises a kind of UWB antenna with dual-attenuation function, and this filter can avoid the mutual interference with wlan system, WiMAX system.
Below in conjunction with accompanying drawing distance, utility model is described in more detail:
As shown in Figure 1, a kind of UWB antenna with dual-attenuation function of the present utility model, the radiating element (101) on medium substrate, impedance matching input microstrip line (102), DGS structure (103), adopt copper product.
An example of the present utility model as shown in Figure 2, medium substrate (106) to be dielectric constant be 4.4 FR4 material, the thickness of this medium substrate is 1.6mm.
Metal ground plate under medium substrate adopts copper product.
As shown in Figure 2, the length of Rh, h1, f1, f2 is respectively 10mm, 12mm, 10mm, 3mm; As shown in Figure 3, the length of G, Wd, Ld, L1, L2, Wt, Ht is respectively 5mm, 0.6mm, 7.5mm, 15mm, 5mm, 12mm, 4mm.
The utility model utilizes circular radiation unit to improve stopband attenuation suppression, utilizes the H-shaped groove structure on DGS structure and radiating element to realize band-stop response.The antenna stopband that the utility model relates to, near 3.7GHz and 5.75GHz, avoids the mutual interference with wlan system, WiMAX system.
Claims (5)
1. one kind has the UWB antenna of dual-attenuation function, it is characterized in that, comprise medium substrate (106), the radiating element (101) be formed on medium substrate, impedance matching input microstrip line (102), DGS structure (107); Radiating element (101) on described medium substrate is carved with H-shaped groove (103), and DGS structure is made up of T-slot (104) and square groove structure (105).
2. a kind of UWB antenna with dual-attenuation function according to claim 1, is characterized in that, the H-shaped groove on radiating element (101) about junction in symmetrical simultaneously symmetrical up and down.
3. a kind of UWB antenna with dual-attenuation function according to claim 1, it is characterized in that, in DGS structure (107), two T-slots (104) are symmetric, and two square groove (105) are symmetric.
4. a kind of UWB antenna with dual-attenuation function according to claim 1, it is characterized in that, radiating element (101) is circular patch.
5. a kind of UWB antenna with dual-attenuation function according to claim 1, is characterized in that, medium substrate (106) adopts FR4 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049324.0U CN205231252U (en) | 2015-12-12 | 2015-12-12 | UWB antenna with dual stop band function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049324.0U CN205231252U (en) | 2015-12-12 | 2015-12-12 | UWB antenna with dual stop band function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231252U true CN205231252U (en) | 2016-05-11 |
Family
ID=55906298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521049324.0U Expired - Fee Related CN205231252U (en) | 2015-12-12 | 2015-12-12 | UWB antenna with dual stop band function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205231252U (en) |
-
2015
- 2015-12-12 CN CN201521049324.0U patent/CN205231252U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161212 |