CN206301924U - A kind of microwave filter with five-pointed star groove - Google Patents

A kind of microwave filter with five-pointed star groove Download PDF

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Publication number
CN206301924U
CN206301924U CN201720004398.5U CN201720004398U CN206301924U CN 206301924 U CN206301924 U CN 206301924U CN 201720004398 U CN201720004398 U CN 201720004398U CN 206301924 U CN206301924 U CN 206301924U
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China
Prior art keywords
groove
microwave
filtering
pointed star
curved surface
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Expired - Fee Related
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CN201720004398.5U
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Chinese (zh)
Inventor
侯义锋
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Wuzhou University
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Wuzhou University
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Priority to CN201720004398.5U priority Critical patent/CN206301924U/en
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Abstract

The utility model discloses a kind of microwave filter with five-pointed star groove, wherein, including the filtering chamber that the dieelctric sheet set by two panels balance is formed, the opposite face of microwave input port and microwave output end is arranged with guided wave curved surface on dieelctric sheet described in two panels, filtering groove surface is arranged with the middle part opposite face of dieelctric sheet described in two panels, described guided wave curved surface is the curved surface of the exponential type curve structure set along microwave transmission direction, described filtering groove surface is the multiple filtering grooves set in the vertical microwave transmission direction of dieelctric sheet opposite face, the section of the filtering groove is positive five-pointed star type.A kind of microwave filter with five-pointed star groove of the present utility model can improve the constraint effect of microwave band sub-wavelength so that the bandwidth and anti-electromagnetic interference capability of wave filter are more preferable.

Description

A kind of microwave filter with five-pointed star groove
Technical field
The utility model is related to a kind of artificial surface phasmon type microwave filter, more specifically, more particularly to one Plant the microwave filter with five-pointed star groove.
Background technology
Today's society is the big data epoch, as the demand of information is in explosive growth, field of mobile communication requirement Integrated level microwave device higher can be produced, however as the continuous improvement of high-frequency circuit integrated level, circuit center line line spacing Less and less, device starts serious electromagnetic noise interference occur, and RC retardation ratio causes a series of technologies such as device job insecurity Problem.Therefore, existing microwave device has not adapted to the development of current extensive microwave integrated circuit, based on such technology A kind of background urgently new artificial surface phasmon type microwave filter of utility model.
Utility model content
The purpose of this utility model is to provide a kind of microwave filter with five-pointed star groove, the microwave filter energy Enough improve the constraint effect of microwave band sub-wavelength so that the bandwidth and anti-electromagnetic interference capability of wave filter are more preferable.
The technical solution adopted in the utility model is as follows:
A kind of microwave filter with five-pointed star groove, wherein, including formed by the dieelctric sheet that two panels balance is set Filtering chamber, the opposite face of microwave input port and microwave output end is arranged with guided wave curved surface on dieelctric sheet described in two panels, two The middle part opposite face of dieelctric sheet described in piece is arranged with filtering groove surface, and described guided wave curved surface is to be set along microwave transmission direction Exponential type curve structure curved surface, described filtering groove surface is to be set in the vertical microwave transmission direction of dieelctric sheet opposite face Multiple filtering groove, the section of the filtering groove is positive five-pointed star type.
Further, the exponential curve equation of described guided wave curved surface is:
Y=a+b* (exp (c*x/L1-1)/(exp (c) -1))
Wherein a is exponential curve position parameter, and value is 0.1~15mm, and b, c are exponential curve form factor, b values It is 0.1~10mm, c values are 0.5~25mm, and L1 is length of the guided wave curved surface along microwave transmission direction.
Further, the filtering groove described in multiple is uniformly arranged, and the Breadth Maximum of the filtering channel section is no more than 4.8mm, the height of the filtering channel section is no more than 3.76mm, and the width of the filtering groove groove face is no more than 1.6mm, phase Of length no more than 5mm between adjacent two filtering groove.
Further, the of length no more than 129.7mm for filtering groove surface along microwave transmission direction, the guided wave curved surface Along of length no more than 14.2mm in microwave transmission direction.
Further, of length no more than 32mm in the vertical microwave transmission direction of the dieelctric sheet, the thickness of the dieelctric sheet No more than 0.5mm.
Further, the filtering groove specular on dieelctric sheet described in two panels.
Further, the width in the vertical microwave transmission direction of the filtering groove surface is no more than 13.2mm.
Compared with prior art, the utility model have the advantage that for:
A kind of microwave filter with five-pointed star groove of the present utility model, wherein, including set by two panels balance The filtering chamber that dieelctric sheet is formed, the opposite face of microwave input port and microwave output end is arranged with guided wave song on two panels dieelctric sheet Face, filtering groove surface is arranged with the middle part opposite face of two panels dieelctric sheet, and guided wave curved surface is to be set along microwave transmission direction The curved surface of exponential type curve structure, filtering groove surface is the multiple filtering set in the vertical microwave transmission direction of dieelctric sheet opposite face Groove, the section for filtering groove is positive five-pointed star type.The input or output of microwave signal are realized using guided wave curved surface, it is recessed filtering Multiple filtering groove structures are employed in groove face, the constraint effect of microwave band sub-wavelength is improve so that the bandwidth of wave filter It is more excellent with anti-electromagnetic interference capability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the S parameter performance diagram of the utility model specific embodiment;
Fig. 3 is the normal direction distribution map of the electric field of the utility model specific embodiment.
Specific embodiment
With reference to specific embodiment, the technical solution of the utility model is described in further detail, but not structure Paired any limitation of the present utility model.
Shown in reference picture 1, a kind of microwave filter with five-pointed star groove of the present utility model, wherein, including by two The filtering chamber that the dieelctric sheet 1 that piece balance is set is formed, the phase of microwave input port and microwave output end on dieelctric sheet described in two panels 1 Opposite is arranged with guided wave curved surface 2, and filtering groove surface 3 is arranged with the middle part opposite face of dieelctric sheet described in two panels 1, described Guided wave curved surface 2 is the curved surface of the exponential type curve structure set along microwave transmission direction, and described filtering groove surface 3 is in medium Multiple filtering grooves 4 that the vertical microwave transmission direction of the opposite face of piece 1 is set, the section of the filtering groove 4 is positive five-pointed star type. The input or output of microwave signal are realized using guided wave curved surface, multiple filtering groove structures are employed in groove surface is filtered, carried The constraint effect of microwave band sub-wavelength high so that the bandwidth and anti-electromagnetic interference capability of wave filter are more excellent.Therefore, originally A kind of microwave filter with five-pointed star groove of utility model can be applied in the civilian microwave communication system of L~S-band, With certain engineering practical value.
Microwave filter of the present utility model counts out the geometry that positive five-pointed star type filters groove 4 according to customer demand in advance There is the positive five-pointed star type for being adapted to size to filter the microwave filter of groove 4 for size, then selection, can accurately regulate and control filtering The free transmission range and stopband rejection characteristic of device.And, open up positive five-pointed star type filtering groove 4 do not increase wave filter entirety it is several What size, further optimizes the filtering characteristic of low pass filter while miniaturization is ensured.
The exponential curve equation of described guided wave curved surface 2 is:
Y=a+b* (exp (c*x/L1-1)/(exp (c) -1))
Wherein a is exponential curve position parameter, and value is 0.1~15mm, and b, c are exponential curve form factor, b values It is 0.1~10mm, c values are 0.5~25mm, and L1 is length of the guided wave curved surface 2 along microwave transmission direction.
Filtering groove 4 described in multiple is uniformly arranged, in periodic arrangement, the Breadth Maximum in the section of filtering groove 4 No more than 4.8mm, the height in the section of filtering groove 4 is no more than 3.76mm, and the width of the groove face of filtering groove 4 is no more than Of length no more than 5mm between 1.6mm, two neighboring filtering groove 4, can make wave filter produce high frequency by setting filtering groove 4 Cut-off, and closely constraint electromagnetic field prevents electromagnetic interference.
Of length no more than 129.7mm that groove surface 3 is filtered along microwave transmission direction, L2 are filtering groove surface 3 along micro- The length of ripple direction of transfer, the guided wave curved surface 2 along microwave transmission direction of length no more than 14.2mm, using guided wave curved surface 2 Good impedance and the pattern match of electromagnetic field can be realized.
Of length no more than 32mm in the vertical microwave transmission direction of the dieelctric sheet 1, the thickness of the dieelctric sheet 1 is no more than 0.5mm。
The specular of filtering groove 4 on dieelctric sheet 1 described in two panels, makes the constraint effect effect of microwave band sub-wavelength more It is good.
The width in the vertical microwave transmission direction of the filtering groove surface 3 is no more than 13.2mm.
Embodiment
The structure of the microwave filter of the present embodiment is identical with implementation method, and described dieelctric sheet 1 uses dielectric constant It is 2.65 substrate, a kind of physical dimension data of the microwave filter each several part with five-pointed star groove of the present utility model is such as Shown in table one:
The microwave filter each several part physical size (unit of table one:mm)
The filtering curve of physical dimension data microwave filter as shown in Table 1 is calculated such as through Fdtd Method Shown in Fig. 2, filter centre frequency is 4.13GHz, and insertion loss is 1.76dB at this, and filter passband internal reflection is less than 8.5dB, ripple shake is less than 1.4dB, and physical dimension data microwave filter as shown in Table 1 is obtained when working in 5.5GHz Normal direction distribution map of the electric field it is as shown in Figure 3.Can be obtained according to Fig. 3, when the wave filter works in passband, its microwave electric field is main It is bound by the width in the vertical microwave transmission direction of filtering groove surface 3, effectively improves the electromagnetism interference energy of the wave filter Power.
The foregoing is only preferred embodiment of the present utility model, all institutes in spirit of the present utility model and spirit Any modification, equivalent and improvement for making etc., should be included within protection domain of the present utility model.

Claims (7)

1. a kind of microwave filter with five-pointed star groove, it is characterised in that including the dieelctric sheet (1) set by two panels balance The filtering chamber of formation, the opposite face of microwave input port and microwave output end is arranged with guided wave on dieelctric sheet described in two panels (1) Curved surface (2), filtering groove surface (3), described guided wave curved surface are arranged with the middle part opposite face of dieelctric sheet described in two panels (1) (2) be along microwave transmission direction set exponential type curve structure curved surface, described filtering groove surface (3) is in dieelctric sheet (1) multiple filtering groove (4) that the vertical microwave transmission direction of opposite face is set, the section of filtering groove (4) is positive five jiaos It is star-like.
2. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that described guided wave The exponential curve equation of curved surface (2) is:
Y=a+b* (exp (c*x/L1-1)/(exp (c) -1))
Wherein a is exponential curve position parameter, and value is 0.1~15mm, and b, c are exponential curve form factor, and b values are 0.1~10mm, c value are 0.5~25mm, and L1 is length of the guided wave curved surface (2) along microwave transmission direction.
3. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that described in multiple Filtering groove (4) is uniformly arranged, and the Breadth Maximum in described filtering groove (4) section is no more than 4.8mm, the filtering groove (4) The height in section is no more than 3.76mm, and the width of filtering groove (4) groove face is no more than 1.6mm, two neighboring filtering groove (4) the of length no more than 5mm between.
4. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that the filtering is recessed Groove face (3) along microwave transmission direction of length no more than 129.7mm, the guided wave curved surface (2) along microwave transmission direction length No more than 14.2mm.
5. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that the dieelctric sheet (1) of length no more than 32mm in vertical microwave transmission direction, the thickness of the dieelctric sheet (1) is no more than 0.5mm.
6. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that two panels is given an account of Filtering groove (4) specular on matter piece (1).
7. a kind of microwave filter with five-pointed star groove according to claim 1, it is characterised in that the filtering is recessed The width in the vertical microwave transmission direction of groove face (3) is no more than 13.2mm.
CN201720004398.5U 2017-01-04 2017-01-04 A kind of microwave filter with five-pointed star groove Expired - Fee Related CN206301924U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106785266A (en) * 2017-01-04 2017-05-31 梧州学院 A kind of microwave filter with five-pointed star groove

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106785266A (en) * 2017-01-04 2017-05-31 梧州学院 A kind of microwave filter with five-pointed star groove

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Granted publication date: 20170704

Termination date: 20200104