CN205543169U - Compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter - Google Patents
Compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter Download PDFInfo
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- CN205543169U CN205543169U CN201620092138.3U CN201620092138U CN205543169U CN 205543169 U CN205543169 U CN 205543169U CN 201620092138 U CN201620092138 U CN 201620092138U CN 205543169 U CN205543169 U CN 205543169U
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- mould substrate
- integrated waveguide
- mould
- pass filter
- broadband band
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Abstract
The utility model provides a compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter, contains two sections microstrip feed lines and four the fourth mould substrates that distribute on the top layer metal plane center of using band pass filter is as four quadrants of initial point waveguide units that integrate. The waveguide unit includes top metal layer, middle medium base plate and underlying metal ground, and middle medium base plate respectively has one row of metal throuth hole at cross axle and longitudinal axial direction, connects top layer metal and underlying metal ground, realize the coupling through opening gap between the integrated waveguide unit of adjacent fourth mould substrate. The utility model discloses an integrated waveguide technique of fourth mould substrate, the characteristics of utilizing its volume to reduce are greatly introduced compound right -hand man and are further reduced point, reinforcing selectivity frequently, combine the characteristic that the integrated waveguide coupling coefficient of fourth mould substrate is big and figure of merit is low, obtain the miniaturized broadband band -pass filter of a better selectivity and better stop band inhibition.
Description
Technical field
The utility model belongs to microwave millimeter filter field, is specifically related to substrate integration wave-guide bandpass filter.
Background technology
Along with the development of modern wireless communication systems and increasingly mature, the wave filter as its important component part also causes
The extensive concern of each side and research.Kind and the function of wave filter are varied, but due to by electromagnetic structure and manufacture
The constraint of technique, compared to general wave filter, broadband filter is at the rarest report, but modern wireless communication systems
In, the most various radar systems, high resolution imaging apparatus etc. all have higher demand to broadband filter.
It is high that the wave filter of traditional metal waveguide structure has power capacity, the advantages such as Insertion Loss is little, but its processing cost is high,
Volume is relatively big, and is not suitable for integrated with modern planar circuit.The substrate integral wave guide filter proposed therewith not only inherits ripple
The advantages such as the loss led is low, quality factor are high, power capacity is big, have also been introduced that size is little simultaneously, are prone to and other planar circuits
The advantage such as integrated, but due to its coefficient of coup and the restriction of quality factor, traditional substrate integration wave-guide is making wideband filtered
Device aspect still has certain difficulty, and goes for need nonetheless remain in the face of a larger-size difficult problem compared with the characteristic of low-frequency range.
Summary of the invention
The utility model proposes the broadband band-pass filter of a kind of 1/4th mould substrate integration wave-guide composite left-and-right-hands, mesh
Be employing 1/4th mould substrate integrated waveguide technology, utilize its volume ratio equivalence conventional substrate integrated waveguide to be greatly reduced
Feature, is re-introduced into composite left-and-right-hand on the basis of size constancy and reduces frequency further, strengthens selectivity, in conjunction with 1/4th
The characteristic that the mould substrate integration wave-guide coefficient of coup is big and quality factor are lower than conventional substrate integrated waveguide, recycles 1/4th bases
Sheet integrated waveguide unit both sides open architecture flexibly, by the way of cascade coupled, strengthens the inhibition to harmonic wave, it is thus achieved that
One preferable selectivity and the minimized wide-band bandpass filter of preferable stopband inhibition.
The technical solution of the utility model is as follows:
The broadband band-pass filter of a kind of 1/4th mould substrate integration wave-guide composite left-and-right-hands, described wave filter comprises two
The microstrip-fed line of section and four 1/4th mould substrate integrated waveguide single units.
Described bandpass filter with including top-level metallic, intermediate medium substrate and underlying metal three-decker, four four points
One of mould substrate integrated waveguide single unit be distributed on four quadrants with the top-level metallic planar central of bandpass filter as initial point；
Described intermediate medium substrate is respectively arranged with row's metal throuth hole in horizontally and vertically direction with corresponding described origin position starting point, connects top
Layer metal and underlying metal ground.
By a length of W1 on the longitudinal axis between two 1/4th mould substrate integrated waveguide single units of the first and second quadrants
Aperture slots realize coupling, pass through transverse axis between second and two 1/4th mould substrate integrated waveguide single units of third quadrant
The aperture slots of upper a length of W2 realizes coupling, two of the third and fourth quadrant 1/4th mould substrate integrated waveguide single units
Between realize coupling by a length of W3 aperture slots on the longitudinal axis.Described aperture slots is the metallic vias distance to border.
Being etched with interdigital gap structure on the top-level metallic of each unit, the interdigital gap structure on first quartile is phase
Turning clockwise 45 ° for transverse axis and arrange, the interdigital gap structure of adjacent cells is symmetrical, each interdigital gap structure with in
Between collectively form on medium substrate two adjacent row's metal throuth holes and underlying metal load composite left-and-right-hand structure four/
One mould substrate integrated waveguide single unit, its cellular construction has the negative rank resonance point relevant to size in low-frequency range.
Described microstrip-fed line respectively with 1/4th mould substrate integrated waveguide singles being positioned at first quartile and fourth quadrant
The top layer metallic layer of unit connects.
The key technology of bandpass filter of the present utility model selects that to be to solve two adjacent 1/4th mould substrates integrated
Coupled problem between Wave guide unit, it is therefore desirable between adjacent two 1/4th mould substrate integrated waveguide single units of careful design
Aperture slots width, the length in the interdigital gap of careful design composite left-and-right-hand, obtain composite left-and-right-hand in a limited space
Structure lower resonance frequency more first than tradition 1/4th mould substrate integrated waveguide single.Also need to the interdigital gap of careful design simultaneously
In the location of etch of 1/4th mould substrate integrated waveguide single unit top-level metallics, rotational angle is to meet interdigital gap structure to electricity
The requirement of magnetic wave direction of transfer in a substrate.It addition, also need the tapering transition structural parameters of careful design 50 Ω feed line with full
Required external sort factor is coupled between four 1/4th mould substrate integrated waveguide single units of foot.
The utility model utilizes 1/4th mould substrate integration wave-guides compared to the higher coupling of conventional substrate integrated waveguide
Coefficient and lower quality factor, in conjunction with traditional resonator coupled wave theory, by appropriate coupling, can finally realize one
The relative bandwidth of compact conformation reaches the high selective and minimized wide-band wave filter of preferable stopband inhibition of 22%.
The beneficial effects of the utility model are specific as follows:
1. use 1/4th mould substrate integrated waveguide technology design wave filters, filter compared to conventional substrate integrated waveguide
Device, its coefficient of coup is bigger, and external sort factor is lower, it is easier to realize broadband filter.
2. use 1/4th mould substrate integration wave-guide design wave filters, at inheriting tradition substrate integration wave-guide premium properties
On the basis of, its volume reduces 75%, is re-introduced into interdigital gap formation composite left-and-right-hand structure and reduces resonance frequency further,
Substantially reduce the volume of wave filter.
3. resonance frequency is closely related with the structural parameters in interdigital gap, permissible by regulating the structural parameters in interdigital gap
Realize the accurate control to resonance frequency, there is higher selectivity.
4. follow traditional coupler Theoretical Design wave filter and can meet the design requirements such as different bandwidth, selectivity.
5. by the way of cascade coupled, strengthen the inhibition to harmonic wave, there is preferable stopband rejection.
Accompanying drawing explanation
Fig. 1 is the structure chart of the broadband filter that the utility model proposes；
Fig. 2 (a) be the broadband filter that the utility model proposes top level structure figure (in figure grey parts represent top layer gold
Belonging to, white portion is the part being etched away)；
Fig. 2 (b) is the fabric figure of the broadband filter that the utility model proposes；
Fig. 3 (a) be described 1/4th mould substrate integrated waveguide singles unit top level structure figure (in figure, grey parts represents top
Layer metal, white portion is the part being etched away)；
Fig. 3 (b) is the fabric figure of described 1/4th mould substrate integrated waveguide single units；
Fig. 4 is the frequency response curve of the broadband filter that the utility model proposes.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described further:
As it is shown in figure 1, the utility model proposes the bandpass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands
Comprise two section of 50 microstrip-fed line of Ω 5 and four 1/4th mould substrate integrated waveguide single units 3, four 1/4th mould substrate collection
Wave guide unit 3 is become to be distributed in four as initial point of the top-level metallic planar central (not comprising feed line part) with bandpass filter
On quadrant.
Seeing Fig. 2 (a) and Fig. 2 (b), bandpass filter comprises top-level metallic 1, intermediate medium substrate (not demonstrating) and the end
Layer metal ground 2, intermediate medium substrate has connection top-level metallic and the metal throuth hole 4 of underlying metal.Metal throuth hole 4 is at transverse axis
It is respectively arranged with a row, with initial point as starting point with y direction.Two 1/4th mould substrate integration wave-guides of the first and second quadrants
Coupling, second and two 1/4th mould bases of third quadrant are realized by the aperture slots of a length of W1 on the longitudinal axis between unit
Coupling, two four points of the third and fourth quadrant are realized by a length of W2 aperture slots on transverse axis between sheet integrated waveguide unit
One of realize coupling by the aperture slots of a length of W3 on the longitudinal axis between mould substrate integrated waveguide single unit, and first and four-quadrant
Do not set aperture slots between two 1/4th mould substrate integrated waveguide single units of limit, be all metal throuth hole 4, the two quadrant
One section of microstrip-fed line 5 of each connection, inputs and exports.Length W1 of above aperture slots, W2, W3 be respectively 7mm, 4mm,
7mm, meets, for obtaining, the coefficient of coup that design requires.Certainly, aperture slots W1, the size of W2, W3 are changed, thus it is possible to vary two
The coefficient of coup between person.
Every section of microstrip-fed line 5 is connected by one section of input or output 50 Ω feed line 5a and one section of tapering transition microstrip line 5b
Meet composition, tapering transition microstrip line and 1/4th mould substrate integrated waveguide singles unit 3 to be connected, for realizing the impedance of wave filter
Join.The physical dimension of microstrip-fed line 5 is as follows: the width L2 that goes to the bottom of tapering transition microstrip line 5b is 4mm, and long L1 is 3.02mm,
The external sort factor that design requires is met for obtaining.The width of 50 Ω feed line 5a is 0.61mm, is used for realizing impedance
Join.
Seeing Fig. 3 (a) and Fig. 3 (b), length of side L3 of 1/4th mould substrate integrated waveguide single units 3 is 8mm, 1/4th
The top-level metallic 1 of mould substrate integrated waveguide single unit 3 etches interdigital gap structure 6, visible in conjunction with Fig. 1, interdigital on first quartile
Gap structure is to turn clockwise 45 ° relative to transverse axis to arrange, and the interdigital gap structure of adjacent cells is symmetrical, so,
Two row's metal throuth holes 4 and underlying metal ground 2 that each interdigital gap structure is adjacent with on intermediate medium substrate collectively form loading
/ 4th mould substrate integrated waveguide single units of composite left-and-right-hand structure, its cellular construction has relevant to size in low-frequency range
Negative rank resonance point.Interdigital gap structure 6 size is as follows: each a length of 5.4mm of interdigital 6-1, and width is 0.2mm, gap width
6-2 is 0.2mm.Composite left-and-right-hand structure have one lower than tradition 1/4th mould substrate integrated waveguide singles unit and only by
The resonance point that interdigital gap size controls.
In this example, dielectric substrate uses Rogers 6002, and dielectric constant is 2.94, and thickness is 10mil.
Fig. 4 show the frequency response curve of this example, and figure includes two big curves, and curve S21 is that the transmission of signal is special
Linearity curve, curve S11 is the coverage diagram of port.As seen from the figure, this wave filter has a relative bandwidth to reach 22%
Passband, its centre frequency is 5GHZ, minimum Insertion Loss 1.70dB in passband, and return loss is more than 10dB.
The utility model is not limited to above-mentioned embodiment, if various changes or deformation to invention are without departing from this reality
By novel spirit and scope, if these change and deformation belong to claim of the present utility model and equivalent technologies scope it
In, then the utility model is also intended to comprise these changes and deformation.
Claims (7)
1. the broadband band-pass filter of a mould substrate integration wave-guide composite left-and-right-hand, it is characterised in that: described filter
Ripple device comprises two sections of microstrip-fed lines (5) and four 1/4th mould substrate integrated waveguide singles unit (3)；
Described bandpass filter with including top-level metallic (1), intermediate medium substrate and underlying metal (2) three-decker, four four
/ mono-mould substrate integrated waveguide single unit (3) be distributed in the top-level metallic planar central of bandpass filter as initial point four as
In limit；Described intermediate medium substrate is respectively arranged with row's metal throuth hole in horizontally and vertically direction with corresponding described origin position starting point
(4) top-level metallic and underlying metal ground, are connected；Two 1/4th mould substrate integrated waveguide single units of the first and second quadrants
Between realize coupling by the aperture slots of a length of W1 on the longitudinal axis, second and two 1/4th mould substrates of third quadrant integrated
Coupling, two 1/4th of the third and fourth quadrant are realized by the aperture slots of a length of W2 on transverse axis between Wave guide unit
Realizing coupling by a length of W3 aperture slots on the longitudinal axis between mould substrate integrated waveguide single unit, described aperture slots is metal mistake
Hole is to the distance on border；
It is etched with interdigital gap structure (6), the interdigital gap structure on first quartile on the top-level metallic (1) of each unit
(6) being to turn clockwise 45 ° relative to transverse axis to arrange, the interdigital gap structure of adjacent cells is symmetrical, each interdigital gap
Two row's metal throuth holes (4) and underlying metal ground (2) that structure is adjacent with on intermediate medium substrate collectively form the compound left and right of loading
/ 4th mould substrate integrated waveguide single units of hand structure；
Described microstrip-fed line (5) is first with 1/4th mould substrate integrated waveguide singles on first quartile and fourth quadrant respectively
(3) top-level metallic connects.
The most according to claim 1, the broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands, it is special
Levy and be: described microstrip-fed line (5) is connected and composed by one section of 50 Ω feed line (5a) and one section of tapering transition microstrip line (5b),
The top-level metallic of tapering transition microstrip line and 1/4th mould substrate integrated waveguide singles unit (3) is connected.
The broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands the most according to claim 1 or claim 2, its
It is characterised by: each interdigital (6-1) a length of 5.4mm of described interdigital gap structure (6), width is 0.2mm, gap width
(6-2) it is 0.2mm.
The broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands the most according to claim 1 or claim 2, its
It is characterised by: described aperture slots W1, W2, W3 are respectively 7mm, 4mm, 7mm.
The most according to claim 2, the broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands, it is special
Levy and be: the width L2 that goes to the bottom of the tapering transition microstrip line (5b) of described microstrip-fed line (5) is 4mm, and long L1 is 3.02mm,
The width of 50 Ω feed lines (5a) is 0.61mm.
The broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands the most according to claim 1 or claim 2, its
Be characterised by: described interdigital gap structure (6) be positioned at each quadrant away from initial point one jiao.
The broadband band-pass filter of 1/4th mould substrate integration wave-guide composite left-and-right-hands the most according to claim 1 or claim 2, its
Being characterised by: described intermediate medium substrate is Rogers 6002, thickness is 10mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092138.3U CN205543169U (en) | 2016-01-30 | 2016-01-30 | Compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092138.3U CN205543169U (en) | 2016-01-30 | 2016-01-30 | Compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter |
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| Publication Number | Publication Date |
|---|---|
| CN205543169U true CN205543169U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620092138.3U Expired - Fee Related CN205543169U (en) | 2016-01-30 | 2016-01-30 | Compound right -hand man's of integrated waveguide of fourth mould substrate broadband band -pass filter |
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| Country | Link |
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| CN (1) | CN205543169U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789783A (en) * | 2016-01-30 | 2016-07-20 | 西南大学 | Quarter mode substrate-integrated waveguide band-pass filter loaded with composite left and right hands |
| CN108763622A (en) * | 2018-04-10 | 2018-11-06 | 杭州电子科技大学 | A kind of harmonic controling network and the design method using its F power-like amplifiers |
-
2016
- 2016-01-30 CN CN201620092138.3U patent/CN205543169U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789783A (en) * | 2016-01-30 | 2016-07-20 | 西南大学 | Quarter mode substrate-integrated waveguide band-pass filter loaded with composite left and right hands |
| CN105789783B (en) * | 2016-01-30 | 2018-05-04 | 西南大学 | Load a quarter mould substrate integrated waveguide bandpass filter of composite left-and-right-hand |
| CN108763622A (en) * | 2018-04-10 | 2018-11-06 | 杭州电子科技大学 | A kind of harmonic controling network and the design method using its F power-like amplifiers |
| CN108763622B (en) * | 2018-04-10 | 2022-03-22 | 杭州电子科技大学 | Harmonic control network and design method of class-F power amplifier using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20210130 |