CN105489988B - Dual-passband differential bandpass filter based on half module substrate integrated wave guide structure - Google Patents
Dual-passband differential bandpass filter based on half module substrate integrated wave guide structure Download PDFInfo
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- CN105489988B CN105489988B CN201410484667.3A CN201410484667A CN105489988B CN 105489988 B CN105489988 B CN 105489988B CN 201410484667 A CN201410484667 A CN 201410484667A CN 105489988 B CN105489988 B CN 105489988B
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Abstract
The present invention provides a kind of dual-passband differential bandpass filter based on half module substrate integrated wave guide structure; including medium substrate, upper surface metal layer and lower surface metal layer; there is the plated-through hole array through medium substrate on medium substrate, the plated-through hole array, upper surface metal layer and lower surface metal layer surround two and half mode resonant cavities.Compared with the realization of conventional substrate integral wave guide filter, under the premise of keeping original performance, size reduces half.By adding electromagnetic bandgap structure, a transmission zero is generated, while producing a stopband in virtual band logical, just form bilateral band structure.And the frequency size of transmission zero can be adjusted by changing the size of electromagnetic bandgap structure.The present invention effectively reduces the size of filter, is convenient for system integration.
Description
Technical field
The present invention relates to dual-passband difference filter, in particular to a kind of half module substrate integrated wave guide dual-passband difference band logical
Filter
Background technique
Filter is important one of the basic element circuit of circuit system, is widely used in microwave communication, radar navigation, electricity
It is indispensable important in microwave and millimeter-wave systems in the systems such as sub- confrontation, satellite communication, trajectory guidance, test instrumentation
Device.The superiority and inferiority of its performance often directly affects the performance indicator of entire communication system.
In practical engineering applications, it will increasingly to processing finished product required time from giving for wave filter technology index
It is short, fast and accurately design high performance microwave filter by be engineering design and market competition inexorable trend, design
Energy is high, small in size, at low cost and shortens the filter lead time, is the inevitable requirement of market competition.
Electro-magnetic bandgap (EBG) structure is a kind of novel artificial electromagnetic material, is widely ground in microwave regime
Study carefully and apply, to realize high performance microwave device.
Half module substrate integrated wave guide (HMSIW) technology based on substrate integration wave-guide is in substrate integration wave-guide (SIW) technology
On the basis of further reduce the size of filter, the filter volume of half module substrate integrated wave guide is smaller, maintains
High-performance, high q-factor, low-loss, low cost, the advantages of being easily integrated.
Based on background above, this paper presents the dual-passband difference bandpass filterings based on half module substrate integrated wave guide structure
Device has better common mode inhibition horizontal.
Summary of the invention
The purpose invented is to design that a size is small and differential bandpass filter with dual-passband.
Above-mentioned purpose of the invention realizes that dependent claims are to select else or have by the technical characteristic of independent claims
The mode of benefit develops the technical characteristic of independent claims.
To reach above-mentioned purpose, the technical solution adopted in the present invention is as follows:
A kind of differential bandpass filter of the dual-passband based on half module substrate integrated wave guide structure comprising medium substrate,
And the upper surface metal layer and lower surface metal layer of medium substrate surface are set, medium substrate has a horizontal axis and hangs down
Straight axis, vertical axis are identical as the transmission direction of signal, in which:
Multiple perforative plated-through holes are formed in the medium substrate, upper surface metal layer and lower surface metal layer,
Plated-through hole is in upper surface metal layer and lower surface metal layer surface composition through-hole array, the through-hole array, upper surface gold
Belong to layer and lower surface metal layer and surrounds two and half mode resonant cavities, respectively the first half mode resonant cavities and the second half mode resonant cavities, the
Half mode resonant cavity and the second half mode resonant cavities are symmetrical about horizontal axis, and the first half mode resonant cavities and the second half mode resonant cavities
Adjoining position is formed with the first coupling window and the second coupling window；
Horizontal symmetrical position on the edge of the upper surface metal layer about the first coupling window is formed with first
Electro-magnetic bandgap, the second electro-magnetic bandgap, and the horizontal symmetrical position about the second coupling window is formed with third electro-magnetic bandgap
With the 4th electro-magnetic bandgap；
Four feeder lines are arranged in the first half mode resonant cavity and the aperture position of the second half mode resonant cavity two sides, and respectively the
One feeder line, the second feeder line, third feeder line and the 4th feeder line are transmitted for signal.
The above-mentioned dual-passband based on half module substrate integrated wave guide structure of one kind is also proposed according to another aspect of the present invention
The implementation method of differential bandpass filter, manufacturing process the following steps are included:
Install surface metal-layer and lower surface metal layer, aforementioned medium base respectively on two surfaces of a medium substrate
The vertical axis of plate and the transmission direction of signal are identical；
It is logical that multiple perforative metallization are formed in the medium substrate, upper surface metal layer and lower surface metal layer surface
Hole passes through the through-hole battle array by plated-through hole in upper surface metal layer and lower surface metal layer surface composition through-hole array
Column, upper surface metal layer and lower surface metal layer enclose packet two and half mode resonant cavities of formation, respectively the first half mode resonant cavities and the
2 half mode resonant cavities, wherein the first half mode resonant cavities and the second half mode resonant cavities are configured to symmetrical about horizontal axis, and
The first half mode resonant cavities are formed with first with the second half mode resonant cavity adjoining positions and couple window and the second coupling window；
Horizontal symmetrical position on the edge of the upper surface metal layer about the first coupling window forms first
Electro-magnetic bandgap, the second electro-magnetic bandgap, and third electro-magnetic bandgap and the are formed in the horizontal symmetrical position about the second coupling window
Four electro-magnetic bandgaps；
Four feeder lines are arranged in aperture position in the first half mode resonant cavity and the second half mode resonant cavity two sides, respectively
First feeder line, the second feeder line, third feeder line and the 4th feeder line are transmitted for signal.
Detailed description of the invention
Fig. 1 is the differential bandpass filter of dual-passband of an embodiment of the present invention based on half module substrate integrated wave guide structure
Structural schematic diagram.
Fig. 2 is the side of the differential bandpass filter of the dual-passband based on half module substrate integrated wave guide structure of Fig. 1 embodiment
View.
Fig. 3 is the differential bandpass filter of the dual-passband for the substrate integrated wave guide structure realized according to Fig. 1 embodiment
One example with size indication.
Fig. 4 is transmission zero with l2Trend chart.
Fig. 5 is that dual-passband differential bandpass filter differential mode is accordingly schemed.
Fig. 6 is that dual-passband differential bandpass filter common mode is accordingly schemed
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
As shown in Figure 1 with Figure 2, preferred embodiment according to the present invention, one kind being based on half module substrate integrated wave guide structure
Differential bandpass filter comprising medium substrate 6, and the upper surface metal layer 1 and following table on 6 surface of medium substrate are set
Face metal layer 7, medium substrate 6 have a horizontal axis L1 and vertical axis L2, the transmission direction phase of vertical axis L2 and signal
Together.
It is logical that multiple perforative metallization are formed in the medium substrate 6, upper surface metal layer 1 and lower surface metal layer 7
Hole 2, plated-through hole 2 in 7 surface composition through-hole array of upper surface metal layer 1 and lower surface metal layer, the through-hole array, on
Surface metal-layer 1 and lower surface metal layer 7 surround two and half mode resonant cavities, respectively the first half mode resonant cavity 31 and the second half modules
Resonant cavity 32, the first half mode resonant cavities 31 and the second half mode resonant cavities 32 are symmetrical about horizontal axis L1, and the first half module resonance
Chamber 31 is formed with first with the second half 32 adjoining positions of mode resonant cavity and couples the coupling of window C1 and second window C2.
Preferably, the diameter of the metal throuth hole 2 is 0.8mm, distance is 1.2mm between two adjacent through-holes.
Preferably, the medium substrate 6 uses RO5880 model, dielectric constant 2.2, with a thickness of 0.508mm.
Horizontal symmetrical position on the edge of the upper surface metal layer 1 about the first coupling window C1 is formed with the
One electro-magnetic bandgap 41, the second electro-magnetic bandgap 42, and the horizontal symmetrical position about the second coupling window C2 is formed with third
Electro-magnetic bandgap 43 and the 4th electro-magnetic bandgap 44.
Four feeder lines are arranged in the first half mode resonant cavity 31 and the aperture position of the second half 32 two sides of mode resonant cavity, respectively
For the first feeder line 51, the second feeder line 52, third feeder line 53 and the 4th feeder line 54, transmitted for signal.
Preferably, refering to what is shown in Fig. 1, in the present embodiment, described first couples the length that window C1 couples window C2 with second
It spends identical.
Preferably, the first coupling window C1 and the second coupling window C2 are configured to symmetrical about vertical axis L2.
Preferably, first electro-magnetic bandgap 41, the second electro-magnetic bandgap 42, third electro-magnetic bandgap 43 and the 4th electro-magnetic bandgap
44 structure is identical.
Present disclosure also relates to a kind of production method of the differential bandpass filter of aforementioned half module substrate integrated wave guide structure,
Realize the following steps are included:
Surface metal-layer 1 and lower surface metal layer 7 are installed respectively on two surfaces of a medium substrate 6, it is preceding to give an account of
The vertical axis L2 of matter substrate 6 is identical as the transmission direction of signal；
Multiple perforative metallization are formed on the medium substrate 6, upper surface metal layer 1 and 7 surface of lower surface metal layer
Through-hole 2, by plated-through hole 2 in 7 surface composition through-hole array of upper surface metal layer 1 and lower surface metal layer, by described
Through-hole array, upper surface metal layer 1 and lower surface metal layer 7 enclose packet and form two and half mode resonant cavities, and respectively the first half module is humorous
Shake chamber 31 and the second half mode resonant cavities 32, wherein the first half mode resonant cavities 31 and the second half mode resonant cavities 32 be configured to about
Horizontal axis L1 is symmetrical, and is formed with first with the second half 32 adjoining positions of mode resonant cavity in the first half mode resonant cavities 31 and couples
The coupling of window C1 and second window C2；
Horizontal symmetrical position on the edge of the upper surface metal layer 1 about the first coupling window C1 forms the
One electro-magnetic bandgap 41, the second electro-magnetic bandgap 42, and third electromagnetism is formed in the horizontal symmetrical position about the second coupling window C2
Band gap 43 and the 4th electro-magnetic bandgap 44；
Four feeder lines are arranged in aperture position in the first half mode resonant cavity 31 and the second half 32 two sides of mode resonant cavity, point
Not Wei the first feeder line 51, the second feeder line 52, third feeder line 53 and the 4th feeder line 54, for signal transmit.
As previously mentioned, forming described two coupling windows in the following manner in this production method:
First coupling window C1 is coupled into window C2 with second and is arranged to identical length, and about L2 pairs of vertical axis
Claim.
As previously mentioned, passing through the first electro-magnetic bandgap 41 of addition, the second electro-magnetic bandgap 42, third electro-magnetic bandgap 43 and the 4th electricity
Tape gap 44 can obtain a transmission zero in virtual passband, and in alternative embodiment, aforementioned production method further includes
Following steps:
Adjust four electromagnetic bandgap structures (41,42,43,44) size and/or four electromagnetic bandgap structures (41,
42,43,44) with the spacing of half mode resonant cavity, so as to adjust the corresponding frequency values of signal transmission zero.
With reference to the one of the dual-passband difference filter of the substrate integrated wave guide structure of Fig. 1 embodiment shown in Fig. 3 realization
A example with size indication, in which: two and half mode resonant cavity width are w1, length l1.Two and half mode resonant cavity two sides four
The width for coupling window is g1, and the coupling window width that the first half mode resonant cavities 31 are connected with the second half mode resonant cavities 32 is
l3.The width of four feeder lines is w3, the metal patch width of feeder line and respective mold half resonant cavity junction is g2.To realize base
In the differential bandpass filter of half module substrate integrated wave guide structure, optimum-size parameter are as follows: l1=31mm, l3=6.5mm, w1
=8mm, w2=8mm, w3=1.6mm, g1=3.8mm, g2=2.5mm, g3=0.6mm, p1=4.7mm, p2=2.5mm, p3=
6.5mm。
In order to improve the selectivity of differential bandpass filter, in the dielectric-slab the first half mode resonant cavity 31 and the second half module
Connected coupling the window's position of resonant cavity 32 has etched the first electro-magnetic bandgap 41, the second electro-magnetic bandgap 42, third electromagnetic belt respectively
Gap 43 and the 4th electro-magnetic bandgap 44, wherein the first electro-magnetic bandgap 41, the second electro-magnetic bandgap 42, third electro-magnetic bandgap 43 and the 4th electricity
44 length of tape gap, width are equal, respectively l2And w2.By adding electro-magnetic bandgap, one can be generated inside difference passband
A transmission zero.If Fig. 5 is to increase electro-magnetic bandgap postfilter differential mode accordingly to scheme, if Fig. 6 is to increase electro-magnetic bandgap postfilter
Common mode is accordingly schemed.Secondly, transmission zero changes therewith, as shown in Figure 5 by adjusting the size value of the disturbance line of rabbet joint.
The centre frequency that the present invention measures the first difference passband of gained is 7.86GHz, three dB bandwidth 370MHz, minimum
Insertion loss is 2.1dB.The centre frequency of second difference passband is 8.8GHz, three dB bandwidth 380MHz, minimum insertion loss
It is 2.5dB.The insertion loss of measurement is mainly since SMA interface and fabrication error generate.For common-mode response, two passbands are total
Mould inhibits to be respectively higher than 35dB and 42dB.In 7.1GHz to 10.4GHz frequency band, common mode inhibition is better than 20dB.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (2)
1. a kind of dual-passband differential bandpass filter based on half module substrate integrated wave guide structure, which is characterized in that including medium
Substrate (6), and setting is in the upper surface metal layer (1) and lower surface metal layer (7) on medium substrate (6) surface, medium substrate
(6) there is a horizontal axis (L1) and vertical axis (L2), vertical axis (L2) is identical as the transmission direction of signal, in which:
Multiple perforative metallization are formed in the medium substrate (6), upper surface metal layer (1) and lower surface metal layer (7)
Through-hole (2), plated-through hole (2) are described in upper surface metal layer (1) and lower surface metal layer (7) surface composition through-hole array
Through-hole array, upper surface metal layer (1) and lower surface metal layer (7) surround two and half mode resonant cavities, and respectively the first half module is humorous
It shakes chamber (31) and the second half mode resonant cavities (32), the first half mode resonant cavities (31) and the second half mode resonant cavities (32) are about trunnion axis
Symmetrically, and the first half mode resonant cavities (31) are formed with the first coupling window with the second half mode resonant cavity (32) adjoining positions to line (L1)
Mouth (C1) and the second coupling window (C2)；
Horizontal symmetrical position on the edge of the upper surface metal layer (1) about first coupling window (C1) is formed with the
One electro-magnetic bandgap (41), the second electro-magnetic bandgap (42), and the horizontal symmetrical position about second coupling window (C2) is formed
There are third electro-magnetic bandgap (43) and the 4th electro-magnetic bandgap (44)；
Four feeder lines are arranged in the first half mode resonant cavity (31) and the aperture position of the second half mode resonant cavity (32) two sides, respectively
For the first feeder line (51), the second feeder line (52), third feeder line (53) and the 4th feeder line (54), transmitted for signal；
First coupling window (C1) is identical as the second coupling length of window (C2)；First coupling window (C1) and the
Two couplings window (C2) are configured to symmetrical about vertical axis (L2)；
First electro-magnetic bandgap (41), the second electro-magnetic bandgap (42), third electro-magnetic bandgap (43) and the 4th electro-magnetic bandgap (44)
Structure it is identical；
The diameter of the metal throuth hole (2) is 0.8mm, and the distance between two adjacent through-holes are 1.2mm；
The medium substrate (6) uses RO5880 model, dielectric constant 2.2, with a thickness of 0.508mm.
2. a kind of system of the dual-passband differential bandpass filter based on half module substrate integrated wave guide structure as described in claim 1
Make method, which comprises the following steps: install surface metal respectively on two surfaces of a medium substrate (6)
Layer (1) and lower surface metal layer (7), the vertical axis (L2) of aforementioned medium substrate (6) are identical as the transmission direction of signal；Institute
It states medium substrate (6), upper surface metal layer (1) and lower surface metal layer (7) surface and forms multiple perforative plated-through holes
(2), passed through by plated-through hole (2) in upper surface metal layer (1) and lower surface metal layer (7) surface composition through-hole array
The through-hole array, upper surface metal layer (1) and lower surface metal layer (7) enclose packet and form two and half mode resonant cavities, and respectively the
Half mode resonant cavity (31) and the second half mode resonant cavities (32), wherein the first half mode resonant cavities (31) and the second half mode resonant cavities
(32) it is configured to about horizontal axis (L1) symmetrically, and adjacent in the first half mode resonant cavities (31) and the second half mode resonant cavities (32)
The position connect is formed with the first coupling window (C1) and the second coupling window (C2)；
Horizontal symmetrical position on the edge of the upper surface metal layer (1) about first coupling window (C1) forms the
One electro-magnetic bandgap (41), the second electro-magnetic bandgap (42), and formed in the horizontal symmetrical position about the second coupling window (C2)
Third electro-magnetic bandgap (43) and the 4th electro-magnetic bandgap (44)；
Four feeder lines are arranged in aperture position in the first half mode resonant cavity (31) and the second half mode resonant cavity (32) two sides, point
Not Wei the first feeder line (51), the second feeder line (52), third feeder line (53) and the 4th feeder line (54), for signal transmit；Under
The mode of stating forms described two coupling windows and couples window (C2) with second and be arranged to identical length the first coupling window (C1)
Degree, and it is symmetrical about vertical axis (L2)；
It is further comprising the steps of: to adjust the size and/or four electromagnetic belts of four electromagnetic bandgap structures (41,42,43,44)
The spacing of gap structure (41,42,43,44) and half mode resonant cavity, so as to adjust the corresponding frequency values of signal transmission zero.
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| CN107123844A (en) * | 2017-04-06 | 2017-09-01 | 江南大学 | A kind of electric tunable electro-magnetic bandgap wave filter of miniature restructural |
| CN109728390B (en) * | 2018-12-05 | 2020-11-10 | 西安电子科技大学 | Double-layer stacked differential microwave band-pass filter |
| CN210167507U (en) * | 2019-08-21 | 2020-03-20 | 南京慧尔视智能科技有限公司 | Traffic radar feeder isolation device |
| CN112736391A (en) * | 2020-12-16 | 2021-04-30 | 中电国基南方集团有限公司 | Defected ground structure type high common mode rejection substrate integrated waveguide differential line |
| CN116073096B (en) * | 2022-11-29 | 2024-03-26 | 西安电子科技大学 | Double-layer substrate integrated waveguide band-pass filter and design method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156573Y (en) * | 2008-01-25 | 2008-11-26 | 南京理工大学 | Integrated wave-guide band filter based on foldable substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156573Y (en) * | 2008-01-25 | 2008-11-26 | 南京理工大学 | Integrated wave-guide band filter based on foldable substrate |
Non-Patent Citations (2)
| Title |
|---|
| Compact HMSIW UWB Bandpass Filter Using DGS and EBG Technology with Two Notched-band;Liu Hao, Xu Ziqiang, Wu Bo, and Liao Jiaxuan;《2013 International Workshop on Microwave and Millimeter Wave Circuits and System Technology》;20131025;第225-228页 |
| Half Mode Substrate Integrated Waveguide (HMSIW) Directional Filter;Yujian Cheng，Wei Hong，Ke Wu;《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》;20070731;第504-506页 |
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