CN204303954U - The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter - Google Patents
The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter Download PDFInfo
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- CN204303954U CN204303954U CN201520016683.XU CN201520016683U CN204303954U CN 204303954 U CN204303954 U CN 204303954U CN 201520016683 U CN201520016683 U CN 201520016683U CN 204303954 U CN204303954 U CN 204303954U
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Abstract
The utility model discloses the composite left-and-right-hand transmission line structure of a kind of ultra broadband suspension microstrip filter, comprise dielectric substrate, first metal patch and the second metal patch, first metal patch, second metal patch wraps up respectively and covers the upper of dielectric substrate, lower surface, first metal patch comprises sheet metal, one end of sheet metal arranges input port, the other end arranges output port, and sheet metal surface evenly arranges some metallization via holes on the line along input port and output port, the surface of the second metal patch is provided with the metallization via hole corresponding with the through hole on the first metal patch surface, and be provided with hollow slots around the metallization via hole on the second metal patch surface, the utility model compact conformation, simply, size is less, thus manufacturing cost is reduced, facilitate the design of filter bandwidht, and the energy loss of electromagnetic wave on medium substrate 1 in transmitting procedure can be reduced.
Description
Technical field
The utility model relates to the designing technique of a kind of millimeter wave and microwave device, particularly a kind of composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter.
Background technology
Along with the develop rapidly of the communication technology, the requirement of people to the information transmission system is more and more higher, ites is desirable to obtain more frequency spectrum resource, improves the transmission speed of data, improves the fail safe of system and reduces production cost etc.Under this background, ultra broadband (UWB) technology is simple with its system configuration, cost is low, power consumption is little, fail safe is high, not easily produce interference, a study hotspot that message transmission rate high becomes current wireless communication field.
Ultra-wide band filter launches in UWB system and accepts part important in module, and the UWB stability of a system is deeply by the impact of ultra-wide band filter performance quality.Ultra-wide band filter is as the Primary Component of system or complete machine miniaturization, and the miniaturization issues of its structure has also become the focus of research.
Since FCC in 2002 is open to UWB frequency range; ultra-wide band filter has been subjected to be paid close attention to and research widely; its structure is also varied, such as: the ultra-wide band filter that the parallel coupled line of the ring-like ultra-wide band filter of bimodulus, application multimode resonance designs, have the filter of parallel connection or series connection quarter-wavelength stub structure and the filter etc. of high low pass cascade.But the design of these ultrafiltration band filters is got up too complicated, and size is comparatively large, is not easy to the integrated of system.In recent years, composite right/left-handed transmission line has the features such as miniaturization, easily design processing due to it, is used in the design of ultra-wide band filter widely.But traditional composite left-and-right-hand transmission line structure, its size is relatively large, and in-band insertion loss is relatively large and must meet right-hand man's equilibrium condition.
Utility model content
Technical problem to be solved in the utility model is to provide the composite left-and-right-hand transmission line structure of the low ultra broadband suspension microstrip filter of a kind of compact conformation, processing cost.
For achieving the above object, the utility model provides following technical scheme: the composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter, comprise dielectric substrate, first metal patch and the second metal patch, first metal patch, second metal patch wraps up respectively and covers the upper of dielectric substrate, lower surface, described first metal patch comprises sheet metal, one end of sheet metal arranges input port, the other end arranges output port, and sheet metal surface evenly arranges some metallization via holes on the line along input port and output port, the surface of described second metal patch is provided with the metallization via hole corresponding with the through hole on the first metal patch surface, and be provided with hollow slots around the metallization via hole on the second metal patch surface, second metal patch is connected by the via hole that metallizes with the first metal patch.
Preferably, the metallization via hole on the first metal patch and the second metal patch is 11.
Preferably, the aperture of metallization via hole is 0.4mm.
Preferably, the spacing between two the often adjacent metallization via holes on the first metal patch is 4.66mm, and the spacing between two the often adjacent metallization via holes on the second metal patch is also 4.66mm.
Preferably, hollow slots is helicoidal structure.
Adopt technique scheme, the beneficial effects of the utility model are:
1, low-loss: because this composite left-and-right-hand structure develops from traditional composite left-and-right-hand structure, remain its intrinsic low-loss characteristic, in series arm, do not introduce series capacitance, therefore propagation loss is less in the dielectric substrate for electromagnetic wave simultaneously;
2, low cost: because this composite left-and-right-hand structure is only made up of single-layer medium plate and first and second metal patch, so very ripe single-layer printed circuit board production technology at present can be adopted to produce, add the feature of its miniaturization, whole board dimension is less, and processing cost is very cheap;
3, size is little: because this structure introduces defect ground surface on the basis of conventional composite right-hand man structure, conventional composite right-hand man structure is replaced to realize shunt inductance by introducing short-circuit line, when meeting same condition, structure is concision and compact more, and size is less;
4, design process succinctly facilitates: because this composite left-and-right-hand structure is the simplification to conventional composite right-hand man structure, conventional composite right-hand man structure must meet right-hand man's equilibrium condition and be eliminated in the structure shown here, greatly facilitates the design of filter bandwidht.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of the utility model first metal patch;
Fig. 3 is the structural representation of the utility model second metal patch;
Fig. 4 is the utility model hollow slots structural representation;
Wherein, 1. medium substrate 2. first metal patch 3. second metal patch 4. input port 5. output port 6. hollow slots 7. metallic plate.
Embodiment
Below in conjunction with accompanying drawing, by the description to embodiment, the utility model is described further:
As shown in Figure 1, the composite left-and-right-hand transmission line structure of the utility model ultra broadband suspension microstrip filter, comprise medium substrate 1, the first metal patch 2 and the second metal patch 3, first metal patch 1 and the second metal patch 3 wrap up and the upper and lower surface of overwrite media substrate 1 respectively; As shown in Figure 2, first metal patch 2 comprises sheet metal 7, the two ends of sheet metal 7 arrange input port 4 and output port 5 respectively, and the surface of sheet metal 7 evenly arranges the metallization via hole that 11 apertures are 0.4mm on the line along input port 4 and output port 5; As shown in Figure 3, the surface of the second metal patch 3 is also provided with 11 metallization via holes same with on sheet metal 7, in metallization via hole respective on sheet metal 7 and the second metal patch 3, spacing between two often adjacent metallization via holes is 4.66mm, and be equipped with hollow slots 6 around the metallization via hole on the second metal patch 3, the cross section of this hollow slots 6 in the shape of a spiral.
Second metal patch 3 is connected by the via hole that metallizes with the first metal patch 2, second metal patch there is hollow slots 6, the shape of hollow slots 6 is helical structure, instead of and introduce short-circuit line to realize shunt inductance, when meeting same band and requiring, structure is compacter, and size is less, achieves the miniaturization of filter.
Certainly, the spacing between the quantity of metallization via hole of the present utility model, aperture, adjacent two metallization via holes are also not limited to the numerical value of the present embodiment.The quantity of metallization via hole decides the quality of filter band external characteristic, in general the number of via hole of metallizing is more, filter band external characteristic is better, but consider the dimensional problem of filter, can not arrange again too many, thus can require according to specific targets the quantity that suitable metallization via hole is set.
The size in the aperture of metallization via hole affects the size of shunt inductance to a certain extent, but consider the propagation of ripple in medium substrate 1 and the problem of machining accuracy, the aperture of metallization via hole can not too greatly can not be too little, thus can arrange its aperture according to index request, the aperture of common metal via hole is greater than 0.3mm and is less than 2mm.
Distance between adjacent metal via hole decides the size of series inductance and shunt capacitance, can according to its size of filter bandwidht setup measures.
The utility model compact conformation, simple, size is less, thus reduces manufacturing cost, facilitates the design of filter bandwidht, and can reduce the energy loss of electromagnetic wave on medium substrate 1 in transmitting procedure.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (5)
1. the composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter, comprise dielectric substrate (1), first metal patch (2) and the second metal patch (3), first metal patch (2), second metal patch (3) wraps up respectively and covers the upper of dielectric substrate (1), lower surface, it is characterized in that: described first metal patch (2) comprises sheet metal (7), sheet metal (7) is fixed on the surface of the first metal patch (2), one end of sheet metal (7) arranges input port (4), the other end arranges output port (5), and the surface of sheet metal (7) evenly arranges some metallization via holes along on the line of input port (4) and output port (5), the surface of described second metal patch (3) is provided with the metallization via hole corresponding with the through hole on the first metal patch (2) surface, and be provided with hollow slots (6) around the metallization via hole on the second metal patch (3) surface, second metal patch (3) is connected by the via hole that metallizes with the first metal patch (2).
2. the composite left-and-right-hand transmission line structure of ultra broadband according to claim 1 suspension microstrip filter, is characterized in that: the metallization via hole on described first metal patch (2) and the second metal patch (3) is 11.
3. the composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter according to claim 2, is characterized in that: the aperture of described metallization via hole is 0.4mm.
4. the composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter according to claim 3, it is characterized in that: the spacing between two the often adjacent metallization via holes on described first metal patch (2) is 4.66mm, the spacing between two the often adjacent metallization via holes on the second metal patch (3) is also 4.66mm.
5. the composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter according to claim 1, is characterized in that: described hollow slots (6) is helicoidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016683.XU CN204303954U (en) | 2015-01-09 | 2015-01-09 | The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016683.XU CN204303954U (en) | 2015-01-09 | 2015-01-09 | The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204303954U true CN204303954U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520016683.XU Expired - Fee Related CN204303954U (en) | 2015-01-09 | 2015-01-09 | The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204303954U (en) |
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2015
- 2015-01-09 CN CN201520016683.XU patent/CN204303954U/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 |
Granted publication date: 20150429 Termination date: 20160109 |