CN105762478A - Four-mode resonator loaded with high-impedance lines - Google Patents
Four-mode resonator loaded with high-impedance lines Download PDFInfo
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- CN105762478A CN105762478A CN201610099948.6A CN201610099948A CN105762478A CN 105762478 A CN105762478 A CN 105762478A CN 201610099948 A CN201610099948 A CN 201610099948A CN 105762478 A CN105762478 A CN 105762478A
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- resonator
- dual
- mode resonator
- transmission line
- line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
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Abstract
The invention discloses a four-mode resonator loaded with high-impedance lines, and relates to the field of microwave passive devices. The resonator is composed of a dual-mode resonator and two symmetrically-distributed high-impedance lines connected with a transmission line, wherein the dual-mode resonator is a folding half-wave resonator, the two arms of a metal patch of the resonator are folded inward, the bottom center of the patch is provided with a via hole, and the two high-impedance lines are attached to the two sides of the dual-mode resonator symmetrically and connected with the transmission line. All the structures are printed on the front of a dielectric substrate, and the back of the substrate is completely covered by metal. The resonator overcomes the following defects: the existing ultra-wideband notch device needs multiple resonators to realize multiple notch stop bands, performances such as frequency selectivity and notch bandwidth need improvement, and the resonance structure can hardly apply to or be transplanted to different UWB systems of other radiation units.
Description
Technical field
The present invention relates to microwave passive component field, specifically, relate to a kind of dual-mode resonator based on half-wavelength.
Background technology
Ultra broadband (UWB) wireless communication system has caused the extensive concern of people.And ultra-wideband antenna and wave filter are as the Primary Component of super broad band radio communication system, super broad band radio communication system is had vital effect.But in ultra-wideband antenna practical application, yet suffer from some problems at present, one of them is exactly the frequency band that some existing wireless communication systems have occupied some UWB scope, such as WiMAX (3.3～3.8GHz), IEEE802.11a (5.15～5.35GHz&5.725～5.825GHz) or X-band satellite communication service (7.25～8.395GHz) etc., therefore UWB system is in order to eliminate the impact on himself of these wireless systems, it is accomplished by the UWB microwave passive component with trap characteristic, such as antenna, wave filter etc..
The problems referred to above have some solutions at present.nullOn the radiant body of antenna, such as etch groove structure [see J.Kim,C.S.Cho,andJ.W.Lee,“5.2GHznotchedultra-widebandantennausingslot-typeSRR,”Electronics.Letters,vol.42,no.6,pp.315-316,Mar.2006.]，Feeder line etches gap structure and [sees Y.H.Zhao,J.P.Xu,andK.Yin,“Dualband-notchedultra-widebandmicrostripantennausingasymmetricalspurlines,”Electronics.Letters,vol.44,no.18,pp.1051-U8,Aug.2008] or in the antenna structure add one tuning metal struts structure [see C.Pan,J.Duan,W.Tu,andJ.Jan,“Band-notchedultra-widebandplanarmonopoleantennausingshuntopen-circuitedstub,”MicrowaveandOpticalTechnologyLetters,vol.53,no.7,pp.1535-1537,Jul.2011.] band-stop response of antenna can be realized，But in these structures，It is accomplished by using multiple resonance structure to produce multiple trap，The complexity of wireless system can be increased so undoubtedly.Although be also commonly used by people for many trap characteristics antenna [sees Y.Sung to multimode resonator now, " Tripleband-notchedUWBplanarmonopoleantennausingamodified H-shapedresonator; " IEEETransactionsonAntennasandPropagation, vol.61, no.2, pp.953-957, Feb.2013；H.LiuandZ.Xu,“DesignofUWBmonopoleantennawithdualnotchedbandsusingonemodifiedelectromagnetic-bandgapstructure,”TheScientificWorldJournal,vol.2013,pp.917965,2013；K.D.Xu, Y.Zhang, R.J.Spiegel, Y.Fan, W.T.Joines, andQ.H.Liu, " Designofastub-loadedring-resonatorslotforantennaapplicat ions; " IEEETransactionsonAntennasandPropagation, vol.63, no.2, pp.517-524, Feb.2015.], but these use the trap antenna of multimode resonator, and its performance such as frequency selectivity and notch bandwidth but still has a lot of rooms for improvement.The more important thing is, owing to these resonance structures are all that the structure to antenna radiation unit is changed, be therefore difficult to be suitable for or be transplanted in other UWB systems other different irradiation structures up.
Summary of the invention
It is an object of the invention to propose a kind of four mould resonators producing trap, this resonator overcomes existing ultra broadband trap device to realize the performance need improvement such as multiple trap stopband multiple resonators of needs, frequency selectivity and notch bandwidth and resonance structure is difficult to be suitable for or be transplanted to the deficiencies such as the different UWB system of other radiating elements.
The technical solution adopted for the present invention to solve the technical problems is: a kind of four mould resonators loading high resistant line, this resonator is to be made up of the high impedance line connecting transmission line that a dual-mode resonator and two are symmetrical, wherein, dual-mode resonator is a kind of folding half-wave resonator, the two-arm fold inward of its metal patch, a via is had at paster bottom centre position place, the both sides being attached to dual-mode resonator that two high impedance lines are then symmetrical, and be connected with transmission line.Above-mentioned all structures are all printed on the front of medium substrate, and the back side of substrate is then covered by metal completely.Thus a kind of four mould resonators loading high resistant line of the present invention, this resonator includes: metal floor, the medium substrate being arranged on metal floor, the resonant element being arranged on medium substrate；Described resonant element includes: dual-mode resonator, high impedance connecting line, transmission line, and wherein dual-mode resonator is untight symmetry side loop configuration, and there are the minor matters extended internally at the both ends of this loop configuration；Just the center of opening part is arranged a through hole bottom this dual-mode resonator；Facing away from dual-mode resonator opening edge and be provided with a transmission lines, by two high impedance connecting lines, the both sides of dual-mode resonator are connected with transmission line respectively.
Further, described two high impedance connecting line one end are connected on two angles of dual-mode resonator place opening edge, and the other end is connected to transmission line.
Further, described two high impedance connecting lines are square-wave-shaped, and direction is perpendicular to transmission line.
There is advantages that
(1) present invention can produce two traps in the frequency band range of UWB, and compared to the method adopting multiple resonators to realize multiple trap stopband, its structure is very simple.
(2) based on this resonator proposed, each trap can contain two transmission zeros, designs compared to simple zero trap before, it is possible to improves the bandwidth of trap.
(3) based on this resonator proposed, producing a transmission pole in the both sides of each trap, by regulating resonator physical size, the position of this transmission pole very close to the transmission zero in trap, can which thereby enhance the frequency selectivity of trap.
(4) present invention is compared to adopting identical resonator structure to be added without the resonator of two high impedance lines, has higher suppression level in stopband, decreases the difficulty requirement of gap processing between line simultaneously.
(5) when the resonator of the present invention is for antenna, it is placed near feeder line and can produce trap effect, it is possible to be well transplanted in the various UWB antennas that radiating element is different.
Accompanying drawing explanation
Fig. 1 is tradition dual-mode resonator
Fig. 2 is the Novel resonator that the present invention proposes
Fig. 3 is the deformation version (high resistant line folding after situation) of the present invention
Fig. 4 is that Fig. 1 is without through hole, Fig. 1 and Fig. 2 S1 in weak coupling situation1Simulation result.Resonator dimensions is: l1=15.24, l2=14.6, w1=0.7, w2=0.1, w3=1.1, S1=0.2, S2=0.16, through hole radius is r=0.2
Fig. 5 be in the present invention resonator in different size parameter (a) l1,(b)l2,(c)w2Lower reflection coefficient change (S11)
Fig. 6 is the structure chart of (a) UWB reference antenna and (b) trap UWB antenna in embodiment
Fig. 7 is the return loss (S of UWB reference antenna and trap UWB antenna in embodiment11) simulation result
Fig. 8 be in embodiment (a) with reference to UWB wave filter front (b) with reference to the UWB wave filter back side (c) based on the UWB notch filter of resonator of the present invention
Fig. 9 is the S parameter simulation result of Fig. 8 (c)
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described: a kind of novel four mould resonators are as shown in Figure 2.The lower surface of its dielectric substrate is covered by metal completely, and upper surface metal level includes the analog-U shaped resonator (see Fig. 1 (a)) of a both arms fold inward, and there is a metallization via at its place of bottom centre.In the both sides of resonator, two high impedance microstrip lines extend near feeder line from resonator two-arm, are connected with feeder line by resonator.Feeder line is 50 Ω microstrip lines, further, to reduce the size of resonator, then high impedance microstrip design can become cranky shape keep its length constant, as shown in Figure 3.
Principles of the invention is:
A via (see Fig. 1 (b)) is added, it is possible near the frequency of script mode of resonance, produce an extra mode of resonance again at originally analog-U shaped monotype resonator central.Owing to the frequency of both patterns is close to each other, a broader stopband therefore can be combined into.Two high impedance lines are added on this basis again in resonator both sides, the mid frequency that can make resonator stopband reduces, and generating an extra stopband in higher frequency band, the two stopband is compared to the stopband before additional high impedance line, there is the band-rejected level of more superior frequency selective characteristic and Geng Gao, impedance matching can be improved in addition with relatively multi-zero.(see Fig. 4)
Through test data analysis, regulate the size of the present invention, it is possible to regulate the mid frequency of two stopbands.As shown in Fig. 5 (a), when increasing l1Size after, it is possible to make the mid frequency of two stopbands of resonator all decline, increase l2Size the mid frequency of upper frequency stopband then can be made to decline, and lower frequency stopband change faint, increase w2Time, the mid frequency of lower frequency stopband will decline, and the mid frequency of altofrequency stopband will not change.
Based on these characteristics of the present invention, only need in use first to l1Size be designed, the frequency of low-frequency stop band is adjusted need frequency, then regulate l2The frequency of high frequency stopband being regulated to required frequency, the frequency of low-frequency stop band can be produced faint skew in the process, therefore last also need adjusts w2The skew of low-frequency stop band frequency is compensated adjustment.
Embodiment 1:UWB trap antenna
For further illustrating the exploitativeness of such scheme, an instantiation is given below, the double; two trap super wide band plane single pole sub antenna of a kind of high selectivity.Dielectric substrate uses thickness to be 34mm × 25mm × 0.508mm, dielectric constant is the RT/Duorid4350 substrate of 3.48.The structure chart of this antenna is such as shown in Fig. 6 (b), and this antenna designs based on Fig. 6 (a).Simulation result is as shown in Figure 7, it can be seen that antenna creates two trap stopbands at 4.77-5.35GHz and 7.26-8.35GHz, except two trap stopbands, and return loss S11In 3.2-12GHz, still it is both less than-10dB, is significantly improved at 10.5-13GHz passband reflection coefficient.
Embodiment 2:UWB notch filter
Based on traditional UWB wave filter (see Fig. 8 (a) and (b)), load the novel UWB wave filter (see Fig. 8 (c)) after resonator of the present invention.Circuit shown in Fig. 8 (c) can produce to respond with the UWB of two traps.Wherein each trap has 2 transmission zeros, as shown in Figure 9.
It will be appreciated that embodiment described here is to aid in reader understanding's principles of the invention, those of ordinary skill in the art should be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those skilled in the art can these technology disclosed according to the present invention enlighten, and makes various other various concrete deformation and combinations without departing from the present invention, and these deformation and combination remain in protection scope of the present invention.
Claims (3)
1. loading four mould resonators of high resistant line, this resonator includes: metal floor, the medium substrate being arranged on metal floor, the resonant element being arranged on medium substrate；Described resonant element includes: dual-mode resonator, high impedance connecting line, transmission line, and wherein dual-mode resonator is untight symmetry side loop configuration, and there are the minor matters extended internally at the both ends of this loop configuration；Just the center of opening part is arranged a through hole bottom this dual-mode resonator；Facing away from dual-mode resonator opening edge and be provided with a transmission lines, by two high impedance connecting lines, the both sides of dual-mode resonator are connected with transmission line respectively.
2. a kind of four mould resonators loading high resistant line as claimed in claim 1, it is characterised in that described two high impedance connecting line one end are connected on two angles of dual-mode resonator place opening edge, and the other end is connected to transmission line.
3. a kind of four mould resonators loading high resistant line as claimed in claim 1, it is characterised in that described two high impedance connecting lines are square-wave-shaped, and direction is perpendicular to transmission line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610099948.6A CN105762478B (en) | 2016-02-23 | 2016-02-23 | A kind of four mould resonators loading high resistant line |
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| CN201610099948.6A CN105762478B (en) | 2016-02-23 | 2016-02-23 | A kind of four mould resonators loading high resistant line |
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| CN105762478A true CN105762478A (en) | 2016-07-13 |
| CN105762478B CN105762478B (en) | 2018-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488752A (en) * | 2021-07-16 | 2021-10-08 | 辽宁工程技术大学 | Five-notch miniature ultra-wideband filter based on C-type resonator |
| CN117269625A (en) * | 2023-11-23 | 2023-12-22 | 中北大学 | Local electromagnetic wave enhanced detection structure combined with atomic air chamber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503900U (en) * | 2009-09-22 | 2010-06-09 | 华南理工大学 | Source-end coupling microstrip filter |
| CN203166046U (en) * | 2012-12-15 | 2013-08-28 | 华南理工大学 | Ultra wide band filter based on double-stub-loaded resonator |
| CN104124496A (en) * | 2014-07-29 | 2014-10-29 | 电子科技大学 | Microstrip tri-band bandpass filter |
-
2016
- 2016-02-23 CN CN201610099948.6A patent/CN105762478B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503900U (en) * | 2009-09-22 | 2010-06-09 | 华南理工大学 | Source-end coupling microstrip filter |
| CN203166046U (en) * | 2012-12-15 | 2013-08-28 | 华南理工大学 | Ultra wide band filter based on double-stub-loaded resonator |
| CN104124496A (en) * | 2014-07-29 | 2014-10-29 | 电子科技大学 | Microstrip tri-band bandpass filter |
Non-Patent Citations (3)
| Title |
|---|
| SYMEON NIKOLAOU，PHOTOS VRYONIDES等: "Resonator type and positioning study for the creation of a potentially reconfigurable frequency notch in a UWB antenna return loss", 《IEEE：ANTENNAS AND PROPAGATION (EUCAP), PROCEEDINGS OF THE 5TH EUROPEAN CONFERENCE ON》 * |
| Y. SUNG: "Triple Band-Notched UWB Planar Monopole Antenna Using a Modified H-Shaped Resonator", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION 》 * |
| 周明祺: "高性能小型化平面微波滤波器研究", 《中国博士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488752A (en) * | 2021-07-16 | 2021-10-08 | 辽宁工程技术大学 | Five-notch miniature ultra-wideband filter based on C-type resonator |
| CN113488752B (en) * | 2021-07-16 | 2022-05-10 | 辽宁工程技术大学 | Five-notch miniature ultra-wideband filter based on C-type resonator |
| CN117269625A (en) * | 2023-11-23 | 2023-12-22 | 中北大学 | Local electromagnetic wave enhanced detection structure combined with atomic air chamber |
| CN117269625B (en) * | 2023-11-23 | 2024-02-20 | 中北大学 | Local electromagnetic wave enhanced detection structure combined with atomic air chamber |
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