CN103117430A - Small ultra wide band wave filter with wave trapping property - Google Patents
Small ultra wide band wave filter with wave trapping property Download PDFInfo
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- CN103117430A CN103117430A CN2013100467601A CN201310046760A CN103117430A CN 103117430 A CN103117430 A CN 103117430A CN 2013100467601 A CN2013100467601 A CN 2013100467601A CN 201310046760 A CN201310046760 A CN 201310046760A CN 103117430 A CN103117430 A CN 103117430A
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Abstract
The invention belongs to the technical field of communications, and particularly relates to a small ultra wide band wave filter with a wave trapping property. The wave filter comprises a dielectric slab playing a supporting role and two input\output ports. The front side of the dielectric slab is provided with dumbbell-shaped interdigital capacitor cells, a folding coupling arm cell, cross-shaped stub line cells, via hole cells and uniform transmission line cells, wherein the number of the dumbbell-shaped interdigital capacitor cells is two, each two interdigital capacitor cells are connected through a cross-shaped stub line cell, and each input\output port is connected with a uniform transmission line cell. The reverse side of the dielectric slab is provided with non-uniform defected ground structure (DGS) cells, pear-shaped slot structure cells and grounding cells, wherein the number of the non-uniform DGS cells is six, the non-uniform DGS cells are non-uniformly arranged according to boundary dimensions, and the number of the pear-shaped slot structure cells is two. According to the mall ultra wide band wave filter with the wave trapping property, the wave trapping property of the wave filter is achieved by adopting a folding coupling arm mode.
Description
Technical field
The invention belongs to communication technical field, be specifically related to a kind of small wide-frequency filter that can suppress the interference of WLAN signal with trap characteristic.
Background technology
Along with the development of indoor high-speed wireless data access technology, require following wireless communication system to have larger data throughout than existing system.Under this background, ultra broadband (UWB) technology is paid attention to day by day as a kind of effective short-distance wireless access technology, becomes a study hotspot of the present communications field.Propose to distribute 3.1～10.6GHz frequency range to the needs of ultra-wideband communications use for IEEE 802.15.3a standard, ultra-wide band filter makes academia and industrial quarters grow to even greater heights to its research enthusiasm as one of passive device crucial in wireless communication system.For the UWB filter, both required in its frequency band that is operated in the so non-constant width of 3.1～10.6GHz, require simultaneously this filter must have smaller size, so that can be integrated with other circuit, and the method for designing of traditional uniform transmission line Coupled Miccrostrip Lines can't be designed so wide band filter.Due to wireless technology develop rapidly with plurality of communication systems and deposit, covered the frequency of some existing wireless communications system in the defined ultra broadband frequency range of FCC, as the frequency range of 5.15-5.35GHz as the standard IEEE 802.11a of wireless local area communication (WLAN), may form communication and disturb.In order to improve the frequency selective characteristic of filter, need to add some trap frequency ranges to come from the interference of these wireless communication systems with minimizing in the design of ultra-wide band filter, therefore be necessary to design a kind of small wide-frequency filter that can suppress the interference of WLAN signal with trap characteristic.
Find through the literature search to prior art, the people such as Xiao-Lan Zhao are in the Microwave and Millimeter in 5 to 8 May in 2012 Wave Technology International Conference(microwave and millimeter-wave technology international conference) on delivered " the compact ultra wide band bandpass filter design that Design of Compact Ultra-Wideband (UWB) Bandpass Filter with Notch Band(has the trap stopband) ", realized in literary composition hindering characteristic at the band at 5.8GHz place.But the Out-of-band rejection to high band of the filter in the document is unsatisfactory, and Out-of-band rejection can only reach the 14GHz left and right.also find in retrieval, in August, 2006, the people such as Sheng Sun was at IEEE Microwave and Wireless Components Letters, (microwave and wireless devices wall bulletin) the 16th volume has been delivered " Dual-band UWB filter with LTCC technology(is based on the double frequency-band ultra wide band bandpass filter of LTCC Technology) " on the 8th phase, filter in literary composition has 2.9 – 5.15 GHz and two passbands of 5.85 – 10.7 GHz, namely at the 5.15-5.95GHz place, a trap stopband is arranged, but the filter construction more complicated of this article, manufacture craft is had relatively high expectations.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and defective, provide a kind of have a trap characteristic can suppress the small wide-frequency filter that the WLAN signal disturbs, can solve that existing microstrip filter frequency band is narrow, size is large, the narrow deficiency of Out-of-band rejection frequency band.
The present invention covers the so wider frequency band of 2.6-11.2GHz, Out-of-band rejection can reach 30GHz at least, can suppress the signal of IEEE 802.11a standard bands of WLAN to the small wide-frequency filter of the band interference of IEEE 802.15.3a standard, its structure is mainly that the cascade by band pass filter and band stop filter consists of.Specifically, the small wide-frequency filter with trap characteristic provided by the invention, its structure is as shown in Figure 1 and Figure 2.Comprise a passive dielectric-slab 10, two the input output port, it is characterized in that, the front of described dielectric-slab 10 has: the first uniform transmission line unit 2, folding coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, cross stub unit 5, through-hole unit 6, the second uniform transmission line unit 8; The reverse side of dielectric-slab has: a DGS unit 12, the 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15, the 5th DGS unit 16, the 6th DGS unit 17, first " in " font slot construction unit 11, second " in " font slot construction unit 18 and ground unit 19; Wherein:
the first input output port 1 and the first uniform transmission line unit 2 join, the second input output port 9 and the second uniform transmission line unit 8 join, the first fork dumbbell shape interdigital capacitor unit 4 and the second dumbbell shape interdigital capacitor unit 7 are connected by cross stub unit 5, one end of the first dumbbell shape interdigital capacitor unit 4 is connected with the first uniform transmission line unit 2, first dumbbell shape interdigital capacitor unit 4 other ends are connected with cross stub 5, one of interdigital capacitor unit 4 outside coupling arm extends and is folded to form and folds coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4 is connected with folding coupling arm unit 3 and is perpendicular, the end that tie point is connected with the first uniform transmission line unit 2 near interdigital capacitor unit 4, one end of the second dumbbell shape interdigital capacitor unit 7 is connected with cross stub 5, and the other end of the second dumbbell shape interdigital capacitor unit 7 is connected with the second uniform transmission line unit 8,
First " in " font slot construction unit 11, second " in " font slot construction unit 18 lays respectively at the below of the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7; The one DGS unit 12, the 6th DGS unit 17 lay respectively at the below of the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, and distribute with Central Symmetry; The 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15 and the 5th DGS unit 16 all are positioned at the below of cross stub unit 5; Described through-hole unit 6 is passed dielectric-slab 10, connection cross stub unit 5 and ground unit 19;
In the present invention, a described DGS unit 12, the 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15, the 5th DGS unit 16, the 6th DGS unit 17, they are distortion of traditional dumbbell shape DGS cellular construction, consisted of by the thin groove of centre and the isosceles right triangle of both sides connection thereof, the part of the head at DGS two ends is positioned at the below of cross stub unit 5, the first dumbbell shape interdigital capacitor unit 4 and the second dumbbell shape interdigital capacitor unit 7, and the DGS array structure is non-homogeneous arrangement.
In the present invention, described the first uniform transmission line unit 2, the second uniform transmission line unit 8, folding coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, cross stub unit 5, through-hole unit 6 and ground unit 19 are conductor.
In the present invention, a described DGS unit 12, the 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15, the 5th DGS unit 16, the 6th DGS unit 17, first " in " font slot construction unit 11 and second " in " font slot construction unit 18 is all that etching is removed corresponding DGS structure and seam shape on ground unit 19, and the air element structure that forms.
In the present invention, described the first input output port 1 outer signal source, the pumping signal that adds is by the first uniform transmission line unit 2, folding coupling arm unit 3, the first dumb-bell shape interdigital capacitor unit 4, again by cross stub unit 5, the second dumb-bell shape interdigital capacitor unit 7 and the second uniform transmission line unit 8, finally by by the second input output port 9 arrive external circuits, realize signal is carried out filtering.
In the present invention, described the first dumb-bell shape interdigital capacitor unit 4, the second dumb-bell shape interdigital capacitor unit 7 interdigital ratios are 2:1, and the spacing between referring to is 0.1mm.
In the present invention, described the first uniform transmission line unit 2 is 50
Uniform transmission line.
In the present invention, described dielectric-slab 10, its dielectric constant are 2.65.
The present invention adopts dumbbell shape interdigital capacitor structure, compares with traditional parallel interdigital capacitor, and area is identical, but has extended coupling length, is conducive to dwindle filter size.The present invention is by realizing low pass filter by the DGS unit at the back side, realize the high pass filter function by the dumbbell shape interdigital capacitor unit in front and cross stub unit, in theory as long as regulate respectively the cut-off frequency of low pass filter and the cut-off frequency of high pass filter can be realized the band pass filter of any bandwidth within the specific limits.Realize trap characteristic because the present invention has adopted folding coupling arm structure in addition, produce decay at the 5.3GHz place greater than the stopband of-20dB, can successfully suppress the interference signal of the standard IEEE 802.11a of wireless local area communication (WLAN).The present invention need not in UWB filter series bandstop filter, thereby compact to design, is conducive to integrated with other radio frequency (RF) circuit.
Description of drawings
Fig. 1 is the overall structural representation of ultra-wide band filter of the present invention.
Fig. 2 is the Facad structure schematic diagram of ultra-wide band filter of the present invention.
Fig. 3 is the reverse side structural representation of ultra-wide band filter of the present invention.
Fig. 4 is the frequency characteristic schematic diagram of ultra-wide band filter emulation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated: the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises: comprise a passive dielectric-slab, two the input output port, the input output port be connected with the front of dielectric-slab and the reverse side of dielectric-slab respectively.Wherein the front of dielectric-slab be connected the signal of output port connect, the reverse side of dielectric-slab connects with ground.
The input output port have two, be respectively first the input output port 1 and second the input output port 9.
As shown in Figure 2, the front of the described dielectric-slab 10 of the present embodiment has: the first uniform transmission line unit 2, the second uniform transmission line unit 8, folding coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, cross stub unit 5, through-hole unit 6.The input output port have two, the first input output port 1 and the first uniform transmission line unit 2 join, the second input output port 9 and the second uniform transmission line unit 8 join, the first interdigital capacitor unit 4 and the second interdigital capacitor unit 7 are connected by cross stub unit 5.One end of the first interdigital capacitor unit 4 is connected with the first uniform transmission line unit 2, the other end is connected with cross stub unit 5, an outside coupling arm of interdigital capacitor is extended and is folded to form folding coupling arm, interdigital capacitor and folding coupling arm unit 3 are perpendicular, an end that is connected with uniform transmission line near interdigital capacitor with the tie point of folding coupling arm unit 3.One end of the second interdigital capacitor unit 7 is connected with cross stub unit 5, and the other end is connected with the second uniform transmission line unit 8.Through-hole unit 6 has one, connection cross stub unit 4 and be positioned at the ground unit 19 of reverse side part.Through-hole unit 6 is passed dielectric-slab 10.Dielectric-slab 10 plays a supportive role, and is the first uniform transmission line unit 2, the second uniform transmission line unit 8, folding coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, cross stub unit 5 on the one side of dielectric-slab.A DGS unit 12, the 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15, the 5th DGS unit 16, the 6th DGS unit 17, first " in " font slot construction unit 11, second " in " font slot construction unit 18 and ground unit 19 on the another side of dielectric-slab.
As shown in Figure 3, the reverse side of the described dielectric-slab 10 of the present embodiment has: a DGS unit 12, the 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15, the 5th DGS unit 16, the 6th DGS unit 17, first " in " font slot construction unit 11, second " in " font slot construction unit 18 and ground unit 19.
First " in " font slot construction unit 11, second " in " font slot construction unit 18 lays respectively at the below of the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7.The one DGS unit 12 and the 6th DGS unit 17 lay respectively at the below of the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7, and distribute with Central Symmetry.The 2nd DGS unit 13, the 3rd DGS unit 14, the 4th DGS unit 15 and the 5th DGS unit 16 all are positioned at the below of cross stub unit 5.
Described the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7 change by traditional parallel coupling interdigital capacitor and form, with the interdigital dumbbell shape that is revised as of traditional rectangle, increased Coupled Line Length of Band, the ratio of the finger of two dumbbell shape interdigital capacitor unit is 2:1, spacing between finger is 0.1mm, and the first uniform transmission line unit 2 and the second uniform transmission line unit 8 that connect the first dumbbell shape interdigital capacitor unit 4, the second dumbbell shape interdigital capacitor unit 7 are 50
Uniform transmission line.
Described six DGS unit 12,13,14,15,16,17, that traditional dumbbell shape DGS cellular construction is out of shape innovation, consisted of by the thin groove of centre and the isosceles right triangle of both sides connection thereof, the part of the head at DGS two ends is positioned at the below of cross stub unit 5, the first dumbbell shape interdigital capacitor unit 4 and the second dumbbell shape interdigital capacitor unit 7, and the DGS array structure is non-homogeneous arrangement.
Described the first dumbbell shape interdigital capacitor unit 4 is arranged in the top of first " " font slot unit 11,12 present positions, a DGS unit.Described the second dumbbell shape interdigital capacitor unit 7 is arranged in the top of the 6th DGS unit 17,18 present positions, second " " font slot unit.
Described two dumbbell shape interdigital capacitor unit 4,7, folding coupling arm unit 3, cross stub unit 5, uniform transmission line unit 2,8, through-hole unit 6 and ground unit 19 are conductor.
12,13,14,15,16,17 and two of described six DGS unit " in " font slot construction unit 11,18 is all the shape that etching is removed corresponding DGS structure and gap structure on ground unit 19, forms air element.
Described dielectric-slab 10 is the low-k material, and its dielectric constant is 2.65.
Described the first input of the present embodiment output port 1 outer signal source, the pumping signal that adds is by the equal first even transmission line unit 2, folding coupling arm unit 3, the first dumbbell shape interdigital capacitor unit 4, again by cross stub unit 5, the second dumbbell shape interdigital capacitor unit 7 and the second uniform transmission line unit 8 finally by by the second input output port 9 arrive external circuits, realize signal is carried out filtering.Dumbbell shape interdigital capacitor and the cross stub of cascade have the function of filtering low frequency signal, periodic DGS structure has the function of filtering high-frequency signal, folding coupling arm has belt-resistance function, triplicity is got up to realize to have the small wide-frequency filter that can suppress the interference of WLAN signal of trap characteristic.
As shown in Figure 4, the frequency characteristic of the present embodiment comprises: the S21(loss) parameter and S11(return loss) parameter.Wherein abscissa represents frequency variable, and unit is GHz; Ordinate represents the amplitude variable, and unit is dB.The passband of ultra-wide band filter of the present invention is 2.58GHz-5.15GHz and 5.50GHz-11.48GHz, the S21 parameter in passband greater than-1.0dB, the S11 parameter in passband less than-9dB.
Claims (8)
1. small wide-frequency filter with trap characteristic, comprise a passive dielectric-slab (10), two the input output port, it is characterized in that, the front of described dielectric-slab (10) has: the first uniform transmission line unit (2), folding coupling arm unit (3), the first dumbbell shape interdigital capacitor unit (4), the second dumbbell shape interdigital capacitor unit (7), cross stub unit (5), through-hole unit (6), the second uniform transmission line unit (8); The reverse side of dielectric-slab has: a DGS unit (12), the 2nd DGS unit (13), the 3rd DGS unit (14), the 4th DGS unit (15), the 5th DGS unit (16), the 6th DGS unit (17), first " in " font slot construction unit (11), second " in " font slot construction unit (18) and ground unit (19); Wherein:
the first input output port (1) and the first uniform transmission line unit (2) join, second input output port (9) and the second uniform transmission line unit (8) join, the first fork dumbbell shape interdigital capacitor unit (4) is connected by cross stub unit (5) with the second dumbbell shape interdigital capacitor unit (7), one end of the first dumbbell shape interdigital capacitor unit (4) is connected with the first uniform transmission line unit (2), first dumbbell shape interdigital capacitor unit (4) other end is connected with cross stub (5), one of interdigital capacitor unit (4) outside coupling arm extends and is folded to form and folds coupling arm unit (3), the first dumbbell shape interdigital capacitor unit (4) is connected with folding coupling arm unit (3) and is perpendicular, the end that tie point is connected with the first uniform transmission line unit (2) near interdigital capacitor unit (4), one end of the second dumbbell shape interdigital capacitor unit (7) is connected with cross stub (5), and the other end of the second dumbbell shape interdigital capacitor unit (7) is connected with the second uniform transmission line unit (8),
First " in " font slot construction unit (11), second " in " font slot construction unit (18) lays respectively at the below of the first dumbbell shape interdigital capacitor unit (4), the second dumbbell shape interdigital capacitor unit (7); The one DGS unit (12), the 6th DGS unit (17) lay respectively at the below of the first dumbbell shape interdigital capacitor unit (4), the second dumbbell shape interdigital capacitor unit (7), and distribute with Central Symmetry; The 2nd DGS unit (13), the 3rd DGS unit (14), the 4th DGS unit (15) and the 5th DGS unit (16) all are positioned at the below of cross stub unit (5); Described through-hole unit (6) is passed dielectric-slab (10), connection cross stub unit (5) and ground unit (19).
2. the small wide-frequency filter with trap characteristic as claimed in claim 1, it is characterized in that, a described DGS unit (12), the 2nd DGS unit (13), the 3rd DGS unit (14), the 4th DGS unit (15), the 5th DGS unit (16), the 6th DGS unit (17), they are distortion of traditional dumbbell shape DGS cellular construction, consisted of by the thin groove of centre and the isosceles right triangle of both sides connection thereof, the part of the head at DGS two ends is positioned at cross stub unit (5), the below of the first dumbbell shape interdigital capacitor unit (4) and the second dumbbell shape interdigital capacitor unit (7), the DGS array structure is non-homogeneous arrangement.
3. the small wide-frequency filter with trap characteristic as claimed in claim 1, it is characterized in that, described the first uniform transmission line unit (2), the second uniform transmission line unit (8), folding coupling arm unit (3), the first dumbbell shape interdigital capacitor unit (4), the second dumbbell shape interdigital capacitor unit (7), cross stub unit (5), through-hole unit (5) and ground unit (19) are conductor.
4. the small wide-frequency filter with trap characteristic as claimed in claim 1, it is characterized in that, a described DGS unit (12), the 2nd DGS unit (13), the 3rd DGS unit (14), the 4th DGS unit (15), the 5th DGS unit (16), the 6th DGS unit (17), first " in " font slot construction unit (11) and second " in " font slot construction unit (18) is all to remove corresponding DGS structure and seam shape in the upper etching of ground unit (19), and the air element structure that forms.
5. the small wide-frequency filter with trap characteristic as claimed in claim 1, it is characterized in that, described the first input output port (1) outer signal source, the pumping signal that adds is by the first uniform transmission line unit (2), folding coupling arm unit (3), the first dumb-bell shape interdigital capacitor unit (4), again by cross stub unit (5), the second dumb-bell shape interdigital capacitor unit (7) and the second uniform transmission line unit (8), finally by by the second input output port (9) arrive external circuit, realization is carried out filtering to signal.
6. as claim 1 or 2 or 3 or 5 described small wide-frequency filters with trap characteristic, it is characterized in that, described the first dumb-bell shape interdigital capacitor unit (4), the second interdigital ratio in dumb-bell shape interdigital capacitor unit (7) are 2:1, and the spacing between referring to is 0.1mm.
7. as claim 1 or 3 or 5 described small wide-frequency filters with trap characteristic, it is characterized in that, described the first uniform transmission line unit (2) is 50
Uniform transmission line.
8. the small wide-frequency filter with trap characteristic as claimed in claim 1, is characterized in that, described dielectric-slab (10), its dielectric constant are 2.65.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170817A1 (en) * | 2000-07-04 | 2002-01-09 | Dal Ahn | Transmission line resonator with dielectric substrate having an etched structure on the ground plane |
| KR20030007254A (en) * | 2002-10-22 | 2003-01-23 | 조영빈 | A added stub DGS resonator with two attenuation poles in stop band |
| CN1901274A (en) * | 2006-07-27 | 2007-01-24 | 上海交通大学 | Super wide band plane microstrip filter |
| CN101079605A (en) * | 2007-05-17 | 2007-11-28 | 上海交通大学 | Small wide-frequency filter restraining WLAN signal interference |
-
2013
- 2013-02-06 CN CN201310046760.1A patent/CN103117430B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170817A1 (en) * | 2000-07-04 | 2002-01-09 | Dal Ahn | Transmission line resonator with dielectric substrate having an etched structure on the ground plane |
| KR20030007254A (en) * | 2002-10-22 | 2003-01-23 | 조영빈 | A added stub DGS resonator with two attenuation poles in stop band |
| CN1901274A (en) * | 2006-07-27 | 2007-01-24 | 上海交通大学 | Super wide band plane microstrip filter |
| CN101079605A (en) * | 2007-05-17 | 2007-11-28 | 上海交通大学 | Small wide-frequency filter restraining WLAN signal interference |
Non-Patent Citations (2)
| Title |
|---|
| PANKAJ SARKAR，ROWDRA GHATAK: "Compact UWB Bandpass Filter With Dual Notch Bands Using Open Circuited Stubs", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
| SAI WAI WONG，LEI ZHU: "Implementation of Compact UWB Bandpass Filter With a Notch-Band", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
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Effective date of registration: 20190702 Address after: Room 102, New Generation Communication Technology Industrial Park, Room 5, 1689 Zizhu Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Kunshan billion interest Information Technology Research Institute Co., Ltd. Address before: 200433 No. 220, Handan Road, Shanghai, Yangpu District Patentee before: Fudan University |