CN101777678B - Double-mode double-band band-pass filter based on hexagonal ring resonator - Google Patents
Double-mode double-band band-pass filter based on hexagonal ring resonator Download PDFInfo
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- CN101777678B CN101777678B CN 201010119919 CN201010119919A CN101777678B CN 101777678 B CN101777678 B CN 101777678B CN 201010119919 CN201010119919 CN 201010119919 CN 201010119919 A CN201010119919 A CN 201010119919A CN 101777678 B CN101777678 B CN 101777678B
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Abstract
The invention provides a double-mode double-band band-pass filter based on a hexagonal ring resonator. An input terminal and an output terminal (1) and (2) of the double-mode double-band band-pass filter are coupled to the hexagonal ring resonator on the upper surface thereof via coupled micro-strip lines (5) and (6) and coupled to a hexagonal ring channel on the lower surface thereof via coupled micro-strip lines (3) and (4); the hexagonal ring resonator (7) on the upper surface is bent and ringed to form inner hexagonal rings (7), (8) and (9); and a square perturbation (10) is connected to the innermost hexagonal ring (9), and similarly, a square groove (12) for perturbation is formed on the hexagonal ring channel on the lower surface thereof. The ring resonator on the upper surface of the double-mode double-band band-pass filter is capable of generating the low-frequency passband of the double bands, and the etched hexagonal groove defected ground structure on the lower surface thereof is capable of generating the high-frequency passband of the double bands; and by adjusting the dimensions of the square perturbation (10) and (12), the separation degree of degenerate mode can be adjusted. Therefore, the invention is suitable for intensive integrated circuits.
Description
Technical field
The present invention relates to a kind of up and down hexagonal ring microstrip filter of two-layer processing technology that comprises, belong to the microwave device technical field.
Background technology
In modern wireless communication systems, the microstrip filter of miniaturisation high-performance has a wide range of applications.Dual mode filter exists simultaneously owing to two modes of resonance, so that resonant element can play the effect of double tunning resonant tank, obtain the quantity of resonant element of the filter of given exponent number, half of traditional microstrip filter, small size, low-loss have been brought thus, the arrowband, the characteristics such as logical-stopband transition is precipitous.And the two-band microwave filter is the signal of processing two wave bands with a two-band unit, and this design concept provides infrastructure and the high performance product of easy realization.The two-band filter that employing has the output of single port input single port can reduce system bulk greatly, improves system reliability.Therefore the double-mode double-band filter of developing in the radio communication has extremely wide application prospect.
Publication number CN101465458 discloses a kind of miniaturisation high-performance microstrip bimodule band-pass filter, the resonant cavity that is comprised of multi-section circular arc on the microwave-medium substrate, input and output feeder line, coupling arm etc.
The present invention proposes a kind of new structure: the hexagonal ring resonator of upper surface carried out bending around, lower surface has been opened a hexagonal groove, has respectively added a foursquare perturbation simultaneously, has formed the band pass filter of Dual-mode two-way.
Summary of the invention
The objective of the invention is, in order to remedy the defective that traditional microstrip filter area is large, loss is high, design and release a kind of Dual-mode two-way band pass filter of new structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of double-mode double-band band-pass filter based on hexagonal ring resonator of the present invention comprises the metal micro-strip line of upper part, the defect grounding structure of lower part, connects up and down two-part medium substrate.Its upper surface hexagonal ring resonator produces the passband of low frequency, and the hexagonal ring groove of lower surface produces the passband of high frequency, and foursquare perturbation is for separating of degenerate mode.
Double-mode double-band band-pass filter of the present invention is comprised of the dielectric-slab between upper surface, lower surface and the upper and lower surface, upper surface as shown in Figure 1, by input port (1), output port (2), coupled microstrip line (3), (4) with carry out a plurality of hexagonal ring that the bending place reason forms by little band and formed; Lower surface is a hexagonal ring groove defect grounding structure of having opened square groove shown in Fig. 2 shows.The correspondence position of the hexagon ground defective ground structure of upper surface hexagonal ring resonator and lower surface is all about hexagonal central point, and dielectric-slab adopts medium substrate.
The present invention as shown in Figure 3, input port (1) and output port (2) are coupled to the hexagonal ring resonator of upper surface by coupled microstrip line (5) (6), are coupled to the hexagonal ring groove of lower surface by coupled microstrip line (3) (4); With upper surface hexagonal ring resonator (7) bend to inside around, it is unequal to form two sizes, width is unequal interior hexagonal rings (8) (9) also, connected a foursquare perturbation (10) on the innermost hexagonal rings (9), open a foursquare groove (12) at lower surface hexagonal ring groove equally and be used for perturbation, regulate the perturbation size dimension, along with the increase of the length of side, it is large that degenerate mode separates change.
The upper surface toroidal cavity resonator bends in inside, form (9) three hexagonal rings in (7) (8), save very much area, the total length of hexagonal rings (7) (8) (9) is a wavelength of low frequency, can produce the low frequency pass band in the biobelt.
Input port (1) and output port (2) differ 180 degree, and be 50 ohm of matched impedances, input port (1) and output port (2) carry out source-load coupling by coupled microstrip line (3) (4) (5) (6).
The structure of the hexagonal ring resonator of lower surface mainly is made of hexagon groove (11) and square groove (12), the hexagon groove is coupled to the hexagon groove by the coupled microstrip line (3) (4) of upper surface, add a square groove perturbation at the hexagon groove, the size dimension of regulating up and down square groove perturbation can be regulated the separation degree of degenerate mode.The length of side length of hexagon groove (11) is wavelength of high frequency, can produce the high frequency passband in the biobelt.
The present invention's beneficial effect compared with the prior art is that the present invention has adopted novel hexagon resonator, saves very much volume; Upper surface adopts bending around processing, has greatly utilized the inner space of toroidal cavity resonator; Lower surface adopts defect grounding structure, has carried out on the ground etching technics, takes full advantage of the space on ground; Simultaneously all added foursquare perturbation in upper and lower surface, so that the degenerate mode separation, so that logical-the stopband transition is more precipitous; The present invention design is very compact, be easy to integrated, easy to use in intensive integrated circuit.
Description of drawings
Fig. 1 is the structure chart of the hexagonal ring resonator of upper surface;
Fig. 2 is the structure chart of the hexagonal ring groove of lower surface;
Fig. 3 is the structure chart of whole micro-strip double-module bi-pass electric-wave filter;
Among the figure: (1) is input port, (2) be output port, (3) (4) are the coupled microstrip line of coupling lower surface hexagonal ring groove, (5) (6) are the coupled microstrip line of coupling upper surface hexagonal ring resonator, (5) and (6) be symmetrical spur slot, (7) be outer hexagonal rings, (8) be middle hexagonal rings, (9) be the inside hexagonal rings, (10) be the perturbation of upper surface square, (11) be lower surface hexagonal ring groove, (12) are the perturbation of lower surface square.
Embodiment
Embodiment of the invention upper surface as shown in Figure 1, the structure of the hexagonal ring resonator of upper surface is mainly by port (1) (2), coupled microstrip line (3) (4) (5) (6), hexagon resonator (7) (8) (9), perturbation (10) consists of, input port (1) carries out the source load coupling with output port (2) by coupled microstrip line (3) (4) (5) (6), be coupled to hexagonal ring resonator (7) by coupled microstrip line (5) (6) gap simultaneously, (7) are enclosed to internal bend two, form two hexagonal rings (8) (9), add square perturbation in innermost hexagonal rings, regulate its size dimension, along with the increase of the length of side, it is large that degenerate mode separates change.The total length of hexagonal rings among the figure (7) (8) (9) is a wavelength of low frequency, has produced the low frequency pass band in the biobelt.
The embodiment of the invention as shown in Figure 2, the structure of the hexagonal ring resonator of lower surface mainly is made of hexagon groove (11) and square groove (12), the hexagon groove is coupled to the hexagon groove by the coupled microstrip line (3) (4) of upper surface, add a square groove perturbation at the hexagon groove, regulate the separation degree that its size dimension can be regulated degenerate mode.The length of side length of hexagon groove (11) is wavelength of high frequency among the figure, has produced the high frequency passband in the biobelt.
It is 4.5 medium substrate that medium substrate between the embodiment of the invention upper and lower surface has used dielectric constant, and the thickness of medium substrate is 0.8mm, whole hexagon Dual-mode two-way band pass filter left-right symmetric.
The micro-strip double-module bi-pass electric-wave filter of present embodiment, as shown in Figure 3, input port is (1), output port is (2), coupled microstrip line (3) (4) (5) (6) is respectively by metal micro-strip line and slot-coupled arrive each hexagon resonator (11) and (7) up and down, it is 4.5 medium substrate that medium substrate has used dielectric constant in the present embodiment, whole hexagon Dual-mode two-way band pass filter left-right symmetric.The operating frequency of present embodiment bilateral band can be by regulating respectively the up and down length of hexagonal rings, the parity mode separation degree of two passbands also can be adjusted respectively by the adjusting to the size of square perturbation (10) and (12), therefore this filter logical-the stopband transition is precipitous, loss is less, and a plurality of transmission zeros are arranged, and performance is very excellent.
Claims (3)
1. the double-mode double-band band-pass filter based on hexagonal ring resonator is characterized in that, described double-mode double-band band-pass filter comprises the metal micro-strip line of upper surface portion, the defect grounding structure of bottom surface section, connects up and down two-part medium substrate; Its upper surface hexagonal ring resonator produces the passband of low frequency, and the hexagonal ring groove of lower surface produces the passband of high frequency, and foursquare perturbation is for separating of degenerate mode;
The input/output port of described double-mode double-band band-pass filter (1) (2) is coupled to the hexagonal ring resonator of upper surface by first, second coupled microstrip line (5) (6), is coupled to the hexagonal ring groove of lower surface by the 3rd, the 4th coupled microstrip line (3) (4); With upper surface hexagonal ring resonator (7) bend to inside around, it is unequal to form two sizes, width is unequal interior hexagonal rings (8) (9) also, connected a foursquare perturbation (10) on the innermost hexagonal rings (9), opened a foursquare groove (12) at lower surface hexagonal ring groove equally and be used for perturbation;
Described input/output port (1) (2) differs 180 degree, and be 50 ohm of matched impedances, input/output port (1) (2) carries out source-load coupling by first to fourth coupled microstrip line (3) (4) (5) (6).
2. a kind of double-mode double-band band-pass filter based on hexagonal ring resonator according to claim 1, it is characterized in that, described upper surface toroidal cavity resonator bends in inside, form three hexagonal rings (7) (8) (9), the total length of these three hexagonal rings (7) (8) (9) is a wavelength of low frequency, can produce the low frequency pass band in the biobelt.
3. a kind of double-mode double-band band-pass filter based on hexagonal ring resonator according to claim 1, it is characterized in that, described lower surface etching a hexagon groove (11), utilized the space on ground, belong to defect grounding structure, the length of side length of hexagon groove (11) is wavelength of high frequency, can produce the high frequency passband in the biobelt.
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| CN 201010119919 CN101777678B (en) | 2010-03-08 | 2010-03-08 | Double-mode double-band band-pass filter based on hexagonal ring resonator |
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| CN 201010119919 CN101777678B (en) | 2010-03-08 | 2010-03-08 | Double-mode double-band band-pass filter based on hexagonal ring resonator |
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| CN101777678A CN101777678A (en) | 2010-07-14 |
| CN101777678B true CN101777678B (en) | 2013-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261954A (en) * | 2019-06-28 | 2019-09-20 | 江苏大学 | A kind of long-period fiber grating mode filter |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101901951B (en) * | 2010-08-10 | 2014-04-16 | 华东交通大学 | Bent dual-band bandpass filter applying defected ground level waveguide technology |
| CN102111114B (en) * | 2010-11-30 | 2013-03-20 | 东南大学 | Design method for reverse class-F power amplifier based on 3/4 spiral virtual ground structure |
| CN106233152B (en) * | 2014-01-24 | 2021-11-09 | 密歇根大学董事会 | Frame-suspended magnetoelastic resonator |
| CN103904391B (en) * | 2014-04-08 | 2016-03-02 | 电子科技大学 | Multilayer hybrid guided mode hexagon substrate integral wave guide filter |
| CN104779425A (en) * | 2015-04-18 | 2015-07-15 | 安庆师范学院 | Hexagonal microstrip band pass filter with spurlines |
| CN108232382B (en) * | 2018-01-02 | 2019-06-21 | 电子科技大学 | A kind of ring-like microstrip line dual-passband electrically tunable filter of regular hexagon |
| CN111697292B (en) * | 2020-06-01 | 2021-10-22 | 宁波大学 | Frequency selection structure for realizing reconstruction of pass band by using temperature-sensitive resistor |
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| KR100349571B1 (en) * | 2000-07-04 | 2002-08-24 | 안달 | Resonator Using Defected Ground Structure on Dielectric |
| JP2007013368A (en) * | 2005-06-29 | 2007-01-18 | National Institute Of Information & Communication Technology | Bandpass filter |
| CN101465458B (en) * | 2009-01-05 | 2012-09-05 | 东南大学 | Miniaturisation high-performance microstrip bimodule band-pass filter |
| CN101515661B (en) * | 2009-03-26 | 2012-10-31 | 上海大学 | Microstrip dual-mode filter of nesting ring-structured parallel feeder lines |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261954A (en) * | 2019-06-28 | 2019-09-20 | 江苏大学 | A kind of long-period fiber grating mode filter |
| CN110261954B (en) * | 2019-06-28 | 2020-08-28 | 江苏大学 | Long-period fiber grating filter |
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Inventor after: Liu Haiwen Inventor after: Shen Li Inventor after: Wu Ming Inventor after: Zhang Xiaoyan Inventor after: Guan Xuehui Inventor before: Liu Haiwen Inventor before: Shen Li |
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Free format text: CORRECT: INVENTOR; FROM: LIU HAIWEN SHEN LI TO: LIU HAIWEN SHEN LI WU MING ZHANG XIAOYAN GUAN XUEHUI |
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