CN102255120B - Ultra wideband (UMB) filter - Google Patents
Ultra wideband (UMB) filter Download PDFInfo
- Publication number
- CN102255120B CN102255120B CN201110104041.1A CN201110104041A CN102255120B CN 102255120 B CN102255120 B CN 102255120B CN 201110104041 A CN201110104041 A CN 201110104041A CN 102255120 B CN102255120 B CN 102255120B
- Authority
- CN
- China
- Prior art keywords
- metal patch
- metal
- hole
- ultra
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides an ultra wideband (UMB) filter, which comprises a dielectric substrate, a first metal patch and a second metal patch. An upper surface and a lower surface of the dielectric substrate are respectively coated by the two metal patches. The first metal patch comprises a sheet metal, an input port and an output port, wherein metalized through holes that are expanded successively are arranged on the sheet metal. Metalized through holes that are corresponding to the metalized through holes on the first metal patch are arranged on the second metal patch, and the first metal patch and the second metal patch are connected by the metalized through holes. Besides, hollow-out grooves are arranged around the metalized through holes on the second metal patch. According to the invention, a traditional composite right/left handed structure model is simplified and an equilibrium condition that must be satisfied by the traditional composite right/left handed structure is cancelled; therefore, the structure employed by the filter is a novel composite right/left handed transmission line structure, which has advantages of compact structure, low cost, low loss, and optimized performance.
Description
Technical field
The present invention relates to a kind of ultrafiltration band filter of the composite left-and-right-hand transmission line structure based on novel, belong to the design field of millimeter wave and microwave device.
Background technology
Along with the develop rapidly of the communication technology, people are more and more higher to the requirement of the information transmission system, wish to obtain more frequency spectrum resource, improve the transmission speed of data, improve the fail safe of system and reduce production cost etc.Under this background, the study hotspot that ultra broadband (UWB) technology is simple with its system configuration, cost is low, power consumption is little, safe, difficult generation is disturbed, message transmission rate high becomes current wireless communication field
[1].
Ultra-wide band filter is in UWB system, launch and accept part important in module, and the UWB stability of a system is subject to the impact of ultra-wide band filter performance quality deeply.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 parallel connection or the filter of series connection quarter-wavelength stub structure and the filter of high low pass cascade etc.
[2]-[4].
Yet these ultrafiltration band filters design too complicated, and size is larger, is not easy to the integrated of system.In recent years, composite right/left-handed transmission line, because it has miniaturization, easily designs the features such as processing, has been used in the design of ultra-wide band filter widely
[5].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.For this reason, need to be on the basis of composite right/left-handed transmission line theory, traditional composite left-and-right-hand transmission line structure is further studied, by introducing defect ground surface, simplify conventional composite right-hand man's structural model and remove the equilibrium condition that conventional composite right-hand man structure must be satisfied, design a kind of novel composite left-and-right-hand transmission line structure, and designed compact conformation, the better ultra-wide band filter of performance.
List of references:
[1] Cai Peng, the design theory of ultra wide band bandpass filter and Miniaturization Research, Shanghai University's doctorate paper, 2006.
[2]?H.?Ishida,?and?K.?Araki,?Design?and?analysis?of?UWB?bandpass?filter?with?ring?filter,?IEEE?MTT-S?International?Microwave?Symposium?Digest,?2004,?3:?1307-1310.
[3]?L.?Zhu,?S.?Sun,?and?W.?Menzel,?Ultra-wideband(UWB)?bandpass?filters?using?multiple-mode?resonator,?IEEE?Microwave?and?Wireless?Components?Letter,?2005,?15(11):?796-798.
[4]?H.?Shaman,?and?J.-S.?Hong,?A?novel?ultra-wideband?(UWB)?bandpass?filter?(BPF)?with?pairs?of?transmission?zeros,?IEEE?Microwave?and?Wireless?Components?Letters,?2007,?17(2):?121-123.
[5]?Z.-X.?Zhang,?and?S.-J.?Xu,?A?Novel?Balun?Structure?Consisting?of?Composite?Right-Left?Handed?Transmission?Line.?Microwave?and?Optical?Technology?Letters[J],?2005,?45(5):422-424.
Summary of the invention
Technical problem to be solved of the present invention is for realizing the miniaturization of filter construction, improves design efficiency, cuts down finished cost, and a kind of ultra-wide band filter that relates to the composite left-and-right-hand transmission line structure based on novel of millimeter wave and microwave device is provided.
The present invention adopts following technical scheme for solving the problems of the technologies described above:
A kind of ultra-wide band filter, comprise dielectric substrate, the first metal patch, the second metal patch, described two metal patches are coated on respectively the upper and lower surface of dielectric substrate, described the first metal patch comprises sheet metal, input port and output port, is provided with the plated-through hole arranging successively on sheet metal;
On the second metal patch, be provided with the plated-through hole corresponding with the first metal patch, the first metal patch is connected by plated-through hole with the second metal patch;
The surrounding of the plated-through hole on the second metal patch is provided with hollow slots.
Preferably, ultra-wide band filter of the present invention, the quantity of described plated-through hole is 5.
Preferably, ultra-wide band filter of the present invention, the aperture of described plated-through hole is 1.5mm.
Preferably, ultra-wide band filter of the present invention, the spacing between adjacent metal through hole is 7.5mm.
Preferably, ultra-wide band filter of the present invention, described hollow slots be shaped as U-shaped groove.
The present invention adopts technique scheme compared with prior art, has following beneficial effect:
1, low-loss; Because this composite left-and-right-hand structure is to develop and from traditional composite left-and-right-hand structure, retained its intrinsic low-loss characteristic, in series arm, do not introduce series capacitance, so electromagnetic wave is less in Propagation loss simultaneously.
2, low cost; Because this composite left-and-right-hand structure only consists of the additional upper and lower double layer of metal coating of single-layer medium plate and middle 5 through holes, so can adopt very ripe single-layer printed circuit plate (PCB) production technology at present produces, add the feature of its miniaturization, whole board dimension is less, and processing cost is very cheap.
3, size is little; Because this structure is introduced defect ground surface on the basis of traditional composite left-and-right-hand structure, replace conventional composite right-hand man structure 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 is more succinctly convenient; Because this composite left-and-right-hand structure is the simplification to conventional composite right-hand man structure, conventional composite right-hand man's structure must meet right-hand man's equilibrium condition and be eliminated in this structure, greatly facilitates the design of filter bandwidht.
Accompanying drawing explanation
Fig. 1 is the front view of structure of the present invention.
Fig. 2 is the vertical view of structure of the present invention.
Fig. 3 is the upward view of structure of the present invention.
Fig. 4 is transmission performance correlation curve figure of the present invention.
Fig. 5 is group delay test curve figure of the present invention.
specific embodiments:
Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail:
As shown in Figure 1, the structure of ultra-wide band filter of the present invention comprises that dielectric substrate 1, the first metal patch 3,2, two metal patches of the second metal patch are coated on respectively the two sides of dielectric substrate.
As shown in Figure 2, the first metal patch of ultra-wide band filter of the present invention, is comprised of sheet metal 5, input port 6 and output port 7, is provided with the plated-through hole 4 arranging successively on sheet metal 5.
As shown in Figure 3, corresponding with the first metal patch, above the second metal patch, be also provided with the plated-through hole arranging successively, the first metal patch is connected by plated-through hole with the second metal patch.Importantly, on the second metal patch, have hollow slots 8, hollow slots be shaped as U-shaped groove, replaced introducing short-circuit line to realize shunt inductance, when meeting same band and require, structure is compacter, size is less, has realized the miniaturization of filter.
Preferably, the quantity of genusization through hole is 5, and the aperture of plated-through hole is 1.5mm, and the spacing between adjacent metal through hole is 7.5mm.
Certainly, the spacing between the quantity of plated-through hole of the present invention, aperture, connected through hole is also not limited only to this numerical value.The quantity of through hole is determining the quality of filter band external characteristic, and in general more its band external characteristics of the number of through hole are better, but considers the dimensional problem of filter, can not arrange again too much, so can require arrange suitable mistake hole count according to specific targets.
The size in the aperture of metallization via hole affects the size of shunt inductance to a certain extent, yet consider the propagation of ripple in medium and the problem of machining accuracy, again can not too greatly can not be too little, so can its aperture be set according to index request, in general be greater than 0.6mm and be less than 2mm.
Distance between adjacent metal through hole is determining the size of series inductance and shunt capacitance, can be according to its size of filter bandwidht setup measures.
As shown in Figure 4, show S21 and the simulate and test Data Comparison of S11 line in working band.3 decibels of bandwidth 3.1GHz-10.6GHz, in-band insertion loss is at 0.5 decibel ± 0.1 decibel, and return loss is all below 13 decibels; What test and simulation architecture coincide simultaneously is fine.
As shown in Figure 5, be presented in passband group delay at 0.53ns between 0.7ns, in passband, group delay changes and has gently good phase characteristic.
Claims (4)
1. a ultra-wide band filter, comprise dielectric substrate, the first metal patch, the second metal patch, described two metal patches are coated on respectively the upper and lower surface of dielectric substrate, it is characterized in that: described the first metal patch comprises sheet metal, input port and output port, is provided with the plated-through hole arranging successively on sheet metal;
On the second metal patch, be provided with the plated-through hole corresponding with the first metal patch, the first metal patch is connected by plated-through hole with the second metal patch;
The surrounding of each plated-through hole on described the second metal patch is provided with hollow slots separately, described hollow slots be shaped as U-shaped groove.
2. ultra-wide band filter according to claim 1, is characterized in that: the quantity of described plated-through hole is 5.
3. ultra-wide band filter according to claim 1 and 2, is characterized in that: the aperture of described plated-through hole is 1.5mm.
4. ultra-wide band filter according to claim 1 and 2, is characterized in that: the spacing between adjacent metal through hole is 7.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110104041.1A CN102255120B (en) | 2011-04-26 | 2011-04-26 | Ultra wideband (UMB) filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110104041.1A CN102255120B (en) | 2011-04-26 | 2011-04-26 | Ultra wideband (UMB) filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102255120A CN102255120A (en) | 2011-11-23 |
| CN102255120B true CN102255120B (en) | 2014-04-16 |
Family
ID=44982197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110104041.1A Expired - Fee Related CN102255120B (en) | 2011-04-26 | 2011-04-26 | Ultra wideband (UMB) filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102255120B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834326A (en) * | 2010-04-23 | 2010-09-15 | 南京信息工程大学 | Double-passband filter with left-hand performance |
| CN101888003A (en) * | 2010-07-07 | 2010-11-17 | 西安交通大学 | Bandpass filter with LTCC multilayer composite left-and-right-hand transmission line structure |
| CN202076392U (en) * | 2011-04-26 | 2011-12-14 | 南京航空航天大学 | Ultra wideband filter |
-
2011
- 2011-04-26 CN CN201110104041.1A patent/CN102255120B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834326A (en) * | 2010-04-23 | 2010-09-15 | 南京信息工程大学 | Double-passband filter with left-hand performance |
| CN101888003A (en) * | 2010-07-07 | 2010-11-17 | 西安交通大学 | Bandpass filter with LTCC multilayer composite left-and-right-hand transmission line structure |
| CN202076392U (en) * | 2011-04-26 | 2011-12-14 | 南京航空航天大学 | Ultra wideband filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102255120A (en) | 2011-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102361110B (en) | Small-sized double-module double-frequency micro-strip filter | |
| CN105553494B (en) | A kind of radio-frequency front-end frequency selection circuit and its signal acceptance method | |
| CN101950827A (en) | Branch node loaded ultra wideband microwave filter | |
| CN202076392U (en) | Ultra wideband filter | |
| CN104505562A (en) | Micro-strip ultra-wideband band pass filter with good band stop characteristic | |
| CN112332051A (en) | Ultra-wideband filter | |
| CN203690460U (en) | Wideband bandpass filter | |
| Li et al. | A highly selective and compact 5G n77 band pass filter based on HRS IPD technology | |
| US8836451B2 (en) | Wideband high frequency bandpass filter | |
| CN102255120B (en) | Ultra wideband (UMB) filter | |
| CN111682292B (en) | Four-way power division filter based on four-mode resonator | |
| CN202712383U (en) | Dual-pass band ultra-wideband filter based on stepped impedance resonator | |
| CN102255125A (en) | Novel double-frequency narrow-band bandpass filter | |
| CN105789766A (en) | Stepped impedance resonator based ultra-wide bandwidth filter with trapped wave adjustability | |
| Tang et al. | Ultra‐wideband bandpass filter using hybrid microstrip‐defected‐ground structure | |
| CN204333184U (en) | Based on the compact bimodulus microstrip filter of E type resonator and T-shaped feeder line | |
| CN204333182U (en) | Based on the double-mode double-band narrow band filter of E type resonator and T-shaped feeder line | |
| CN204333181U (en) | Double-mode double-band filter | |
| CN105789750A (en) | E type resonator and T type feeder line based dual-mode dual-band narrow-band filter | |
| CN204333185U (en) | Based on the compact double-mode double-band microstrip filter of E type resonator | |
| CN204333183U (en) | Based on the compact bimodulus Wide stop bands filter of E type resonator and T-shaped feeder line | |
| CN204303954U (en) | The composite left-and-right-hand transmission line structure of ultra broadband suspension microstrip filter | |
| CN204119174U (en) | A kind of ultra-wideband amplifier | |
| Chen et al. | An ultra‐wideband power amplifier with band notched response | |
| Ji et al. | A compact UWB bandpass filter using pseudo-interdigital stepped impedance resonators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20140416 Termination date: 20160426 |