CN106099268A - A kind of broadband merit filter-divider - Google Patents
A kind of broadband merit filter-divider Download PDFInfo
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- CN106099268A CN106099268A CN201610603180.1A CN201610603180A CN106099268A CN 106099268 A CN106099268 A CN 106099268A CN 201610603180 A CN201610603180 A CN 201610603180A CN 106099268 A CN106099268 A CN 106099268A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
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Abstract
The invention discloses a kind of broadband merit filter-divider, be covered with the medium substrate (101) of metal ground plate (102) including lower surface, the upper surface at described medium substrate (101) is provided with input feeder line (1), the first outfan feeder line (2), the second outfan feeder line (3), the one or three mould resonator (4), the two or three mould resonator (5), the first ground connection step electric impedance resonator (6), the second ground connection step electric impedance resonator (7), the 3rd ground connection step electric impedance resonator (8), isolation resistance (9).Broadband of the present invention merit filter-divider selectivity is good, isolation is high, have preferable harmonic responses, it is adaptable to modern wireless communication systems.
Description
Technical field
The present invention relates to microwave passive component technical field, particularly a kind of humorous based on discrete component isolation network and three moulds
Shake the broadband merit filter-divider of device.
Background technology
Merit filter-divider is an independent microwave passive component, it functionally achieve in radio circuit power splitter and
Effective combination of wave filter, say, that merit filter-divider has had both power distribution and the filter function of signal.Therefore, high-performance
Merit filter-divider can not only effectively reduce the size of system, and can the complexity of simplified system design, thus enter one
Step realizes the low cost of wireless communication system, high-performance, Miniaturization Design.
In recent years, along with modular structural units (Modular Building Block, MBB) and monolithic integrated microwave circuit
The development of (Monolithic Microwave Integrated Circuit, MMIC), low cost, high integration, miniaturization
High-performance merit filter-divider becomes study hotspot.
2005, Chi-Feng Chen, Ting-Yi Huang and Ruey-Beei Wu was at IEEE
On Transaction.Microwave Theory Technique periodical (vol.53, no.12, pp.3788-3793,2005)
Deliver " Design of Microstrip Bandpass Filters With Multiorder Spurious-Mode
Suppression ", propose in the theoretical basis of parallel coupling, combine capacitative end and load the resonance characteristic of minor matters to realize height
The method for designing of subharmonic suppression.Although this method for designing design theory is relatively simple, but owing to this structure introduces rank
Ladder electric impedance resonator so that the narrower bandwidth of designed merit filter-divider.Additionally, due to this circuit is by simple parallel coupling
Theoretical realization, therefore this wave filter does not carry outer zero point, and signal-selectivity is poor.
2015, Kaijun Song was at IEEE Electronics Letters periodical (vol.51, no.6, pp.495
497,2015) " Compact filtering power divider with high frequency is delivered on
Selectivity and wide stopband using embedded dual-mode resonator ", propose by embedding
Enter dual-mode resonator and divide and filter function realizing merit, utilize source to carry coupling simultaneously and introduce and carry outer zero point to improve Out-of-band rejection, believe
Number selectivity is preferable.But, owing to this structure uses merely isolation resistance to realize the isolation between two output ports, in passband
Isolation is poor.
2015, Bo Zhang and Yuanan Liu IEEE Electronics Letters periodical (vol.51,
No.23, pp.1950-1952,2015) on deliver " Wideband Filtering Power Divider with High
Selectivity ", propose to design the side of merit filter-divider by being collocated with each other of parallel coupled line and open-end minor matters
Method, it is achieved that wider bandwidth of operation, preferable signal-selectivity.Although the merit filter-divider of this method for designing design is low
Frequency range has the advantage that volume is little, but due to simple in construction, there is the shortcoming that Out-of-band rejection degree is the highest.
In a word, prior art there is the problem that broadband merit filter-divider poor selectivity, isolation is low, Out-of-band rejection is poor.
Summary of the invention
It is an object of the invention to provide a kind of broadband merit filter-divider, selectivity is good, isolation is high, Out-of-band rejection is good.
The technical solution realizing the object of the invention is:
A kind of broadband merit filter-divider, is covered with the medium substrate of metal ground plate including lower surface,
Upper surface at described medium substrate be provided with input feeder line, the first outfan feeder line, the second outfan feeder line,
One or three mould resonators, the two or three mould resonator, the first ground connection step electric impedance resonator, the second ground connection step electric impedance resonator,
Three ground connection step electric impedance resonators, isolation resistance, described one or three mould resonator, the two or three mould resonator input respectively with
Input feeder line couples, and its outfan couples with the first outfan feeder line, the second outfan feeder line respectively, described 3rd ground connection rank
The input of ladder electric impedance resonator and the first outfan feeder line and the second outfan feeder line is connected, described first ground connection stepped impedance
The outfan of resonator and the first outfan feeder line is connected, the second ground connection step electric impedance resonator and the second outfan feeder line defeated
Go out end to be connected, the first ground connection step electric impedance resonator, the second ground connection step electric impedance resonator, the 3rd ground connection step electric impedance resonator
The other end be connected with metal ground plate through medium substrate.
Compared with prior art, its remarkable advantage is the present invention:
1, selectivity is good: existing merit filter-divider general structure is simple, it is impossible to produces and carries outer zero point, although thus causing energy
Enough realize filter function, but the outer poor selectivity of passband band.The coupling line of one end termination open circuit minor matters in the present invention can be at passband
Both sides produce a zero point respectively, and zero point produced by three mould resonator idol moulds used in circuit also can be produced in passband side
A raw zero point.Two factors in sum, it is achieved that the high selectivity of circuit passband.
2, isolation is high: the isolation network of existing merit filter-divider normally only uses isolation resistance, realizes in passband
Isolation, but owing to the simple isolation resistance that introduces can not meet the isolation design objective of all circuit, so these are electric
The isolation on road can not realize reaching 15dB in whole passband sometimes.Circuit of the present invention uses discrete step electric impedance resonator
Isolation network, this network includes a middle-end loading stepped-impedance resonator, two other end loading stepped-impedance resonators and
One isolation resistance.By using this isolation network, the difference of the parity mode input impedance of output port can be reduced, thus
Preferable isolation is realized in whole passband.
3, Out-of-band rejection is good: existing merit filter-divider general structure is simple, it is impossible to produces zero point outside band thus causes
Out-of-band harmonics can not be suppressed.Why the present invention can produce wider up-conversion stopband, is because one end termination open circuit branch
The coupling line of joint on top can produce some zero points by band, and middle-end loading stepped-impedance resonator and other end are loading stepped simultaneously
Electric impedance resonator also is able at own resonance point circuit upper side band is produced some zero points.Comprehensive both the above mode, this
Bright achieve wider Out-of-band rejection degree.
Accompanying drawing explanation
Fig. 1 is the perspective view of broadband of the present invention merit filter-divider.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the physical dimension schematic diagram of embodiment.
Fig. 4 is S11, S21 and S31 parameters simulation figure of embodiment.
Fig. 5 is the S23 parameters simulation figure of embodiment.
Fig. 6 is the analogous diagram of two output port amplitude differences of embodiment.
Fig. 7 is the analogous diagram of two output port phase contrasts of embodiment.
In figure, medium substrate 101, metal ground plate 102,
Input feeder line 1, the first outfan feeder line 2, the second outfan feeder line the 3, the 1st mould resonator 4, the two or three mould
Resonator 5, the first ground connection step electric impedance resonator 6, the second ground connection step electric impedance resonator 7, the 3rd ground connection stepped impedance resonance
Device 8, isolation resistance 9,
One 50 ohm microstrip conduction band 11, the first half-wavelength main transmission line 12, the second half-wavelength main transmission line 13,
2nd 50 ohm microstrip conduction band 21, the first microstrip transmission line 22, the first quarter-wave coupling line 23,
3rd 50 ohm microstrip conduction band 31, the second microstrip transmission line 32, the second quarter-wave coupling line 33,
First quarter-wave resonance device 41, the second quarter-wave resonance device 42, the first plane of symmetry minor matters load
Low ESR resonator 43, the first plane of symmetry minor matters load high impedance resonant tank device 44,
3rd quarter-wave resonance device 51, the 4th quarter-wave resonance device 52, the second plane of symmetry minor matters load
Low ESR resonator 53, the second plane of symmetry minor matters load high impedance resonant tank device 54,
First high impedance resonant tank device 61, the first Low ESR resonator 62,
Second high impedance resonant tank device 71, the second Low ESR resonator 72,
Three-hypers electric impedance resonator 81, the 3rd Low ESR resonator 82.
Detailed description of the invention
As it is shown in figure 1, broadband of the present invention merit filter-divider, it is covered with the medium substrate of metal ground plate 102 including lower surface
101,
Upper surface at described medium substrate 101 is provided with the feedback of input feeder line the 1, first outfan feeder line the 2, second outfan
Line the 3, the 1st mould resonator the 4, the 2nd 3 mould resonator the 5, first ground connection step electric impedance resonator the 6, second ground connection stepped impedance
Resonator the 7, the 3rd ground connection step electric impedance resonator 8, isolation resistance 9,
The input of described one or three mould resonator the 4, the 2nd 3 mould resonator 5 couples with input feeder line 1 respectively, and it is defeated
Go out end to couple with first outfan feeder line the 2, second outfan feeder line 3 respectively, described 3rd ground connection step electric impedance resonator 8 and the
One outfan feeder line 2 is connected with the input of the second outfan feeder line 3, described first ground connection step electric impedance resonator 6 and first
The outfan of outfan feeder line 2 is connected, and the second ground connection step electric impedance resonator 7 is connected with the outfan of the second outfan feeder line 3,
Another of first ground connection step electric impedance resonator the 6, second ground connection step electric impedance resonator the 7, the 3rd ground connection step electric impedance resonator 8
End is connected through medium substrate 101 with metal ground plate 102.
As it is shown in figure 1, described medium substrate 101 is rectangle, input feeder line 1 is located near one broadside, input
On this broadside, first outfan feeder line the 2, second outfan feeder line 3 is near another broadside, the first outfan, the second outfan
It is respectively provided on the narrow limit of relative two.
As in figure 2 it is shown, described input feeder line 1 includes that one 50 ohm vertical with Rectangular Enclosure with Participating Media substrate 101 broadside is micro-
The first half-wavelength main transmission line 12 and the second half-wavelength main transmission line 13 that band wire conduction band 11 is parallel with this broadside, described first
The input of 50 ohm microstrip conduction bands 11 is positioned at a broadside midpoint of Rectangular Enclosure with Participating Media substrate 101, and its input is simultaneously with the
One half-wavelength main transmission line 12 is connected with the top of the second half-wavelength main transmission line 13, the first half-wavelength main transmission line 12, second
The terminal of half-wavelength main transmission line 13 is connected with metal ground plate 102 by connection post.
As in figure 2 it is shown, described first outfan feeder line 2 includes two 50 Europe parallel with Rectangular Enclosure with Participating Media substrate 101 broadside
Nurse microstrip line conduction band 21 and the first microstrip transmission line 22 and first quarter-wave vertical with Rectangular Enclosure with Participating Media substrate 101 broadside
Long coupling line 23；
The input of described first microstrip transmission line 22 and the outfan of the first quarter-wave coupling line 23 are connected, its
The input of outfan and the 2nd 50 ohm microstrip conduction band 21 is connected, the outfan of described 2nd 50 ohm microstrip conduction band 21
It is positioned on a narrow limit of Rectangular Enclosure with Participating Media substrate 101；
Described first ground connection step electric impedance resonator 6 includes the first high impedance resonant tank device 61 and the first Low ESR resonator
62, one end of the first Low ESR resonator 62 is vertically connected with the first microstrip transmission line 22；
Described second outfan feeder line 3 includes that three 50 ohm microstrip parallel with Rectangular Enclosure with Participating Media substrate 101 broadside is led
With 31 with the second microstrip transmission line 32 and the second quarter-wave coupling line vertical with Rectangular Enclosure with Participating Media substrate 101 broadside
33；
The input of described second microstrip transmission line 32 and the outfan of the second quarter-wave coupling line 33 are connected, its
The input of outfan and the 3rd 50 ohm microstrip conduction band 31 is connected, the outfan of described 3rd 50 ohm microstrip conduction band 31
It is positioned on another narrow limit of Rectangular Enclosure with Participating Media substrate 101；
Described second ground connection step electric impedance resonator 7 includes the second high impedance resonant tank device 71 and the second Low ESR resonator
72, one end of the second Low ESR resonator 72 is vertically connected with the second microstrip transmission line 32；
Described 3rd ground connection step electric impedance resonator 8 includes three-hypers electric impedance resonator 81 and the 3rd Low ESR resonator
82, one end of the 3rd Low ESR resonator 82 and the first quarter-wave coupling line 23 and the second quarter-wave coupling line
33 inputs are connected.
As in figure 2 it is shown, described one or three mould resonator 4 include the first quarter-wave resonance device the 41, the 2nd 4/
One wave resonator the 42, first plane of symmetry minor matters load Low ESR resonator the 43, first plane of symmetry minor matters and load high impedance resonant tank
Device 44,
Described first quarter-wave resonance device 41 is parallel with Rectangular Enclosure with Participating Media substrate 101 broadside, the second quarter-wave
Long resonator 42 is vertical with Rectangular Enclosure with Participating Media substrate 101 broadside, first plane of symmetry minor matters load Low ESR resonator 43 axis and
First plane of symmetry minor matters load the axis of high impedance resonant tank device 44 and all become 45 degree of angles with Rectangular Enclosure with Participating Media substrate 101 broadside,
First plane of symmetry minor matters load one end of Low ESR resonator 43 simultaneously with the first quarter-wave resonance device 41
Outfan and the input of the second quarter-wave resonance device 42 be connected, its other end and the first plane of symmetry minor matters load high
The axis of electric impedance resonator 44 is connected,
Described first quarter-wave resonance device 41 and the first half-wavelength main transmission line 12 parallel coupling, the two or four/
One wave resonator 42 and the first quarter-wave coupling line 23 parallel coupling；
Described two or three mould resonator 5 includes the 3rd quarter-wave resonance device the 51, the 4th quarter-wave resonance
Device the 52, second plane of symmetry minor matters load Low ESR resonator the 53, second plane of symmetry minor matters and load high impedance resonant tank device 54,
Described 3rd quarter-wave resonance device 51 is parallel with Rectangular Enclosure with Participating Media substrate 101 broadside, the 4th quarter-wave
Long resonator 52 is vertical with Rectangular Enclosure with Participating Media substrate 101 broadside, second plane of symmetry minor matters load Low ESR resonator 53 axis and
Second plane of symmetry minor matters load the axis of high impedance resonant tank device 54 and all become 135 degree of angles with Rectangular Enclosure with Participating Media substrate 101 broadside,
Second plane of symmetry minor matters load one end of Low ESR resonator 53 simultaneously with the 3rd quarter-wave resonance device 51
Outfan and the input of the 4th quarter-wave resonance device 52 be connected, its other end and the second plane of symmetry minor matters load high
The axis of electric impedance resonator 54 is connected,
Described 3rd quarter-wave resonance device 51 and the second half-wavelength main transmission line 13 parallel coupling, the four or four/
One wave resonator 52 and the second quarter-wave coupling line 33 parallel coupling.
Present invention broadband based on discrete component isolation network and three mould resonators merit filter-divider, wherein the one or three mould is humorous
Shake device 4 and first quarter-wave resonance device the 41, second quarter-wave resonance device 42 of the two or three mould resonator 5,
The length and width of three quarter-wave resonance device the 51, the 4th quarter-wave resonance devices 52 determines the position of passband,
Regulate first plane of symmetry minor matters loading Low ESR resonator the 43, first plane of symmetry minor matters loading high impedance resonant tank device 44, second right
Title face minor matters load Low ESR resonator the 53, second plane of symmetry minor matters loading high impedance resonant tank device 54 can change two patterns
Position, so that passband is more smooth；First half-wavelength main transmission line 12 and the second half-wavelength main transmission line 13 respectively and with
It is coupled by the spacing of the first quarter-wave resonance device the 41, the 3rd quarter-wave resonance device 51 of its parallel coupling
Intensity effect is relatively big, and the least stiffness of coupling of spacing is the biggest, and amplitude and the phase place goodness of fit of two output ports are the highest；Regulation first
Ground connection step electric impedance resonator the 6, second ground connection step electric impedance resonator 7 and the first height of the 3rd ground connection step electric impedance resonator 8
Electric impedance resonator 61 and the first Low ESR resonator the 62, second high impedance resonant tank device 71 and the second Low ESR resonator 72 and the 3rd
High impedance resonant tank device 81 and the impedance ratio of the 3rd Low ESR resonator 82 and length can change circuit parity mode input impedance also
Make both amplitude differences reduce, thus produce the preferably interior isolation of band and out-of-band harmonics suppression simultaneously.
Present invention broadband based on discrete component isolation network and three mould resonators merit filter-divider, by print on manufacturing
Circuit board manufacturing process processed the metal covering in circuit substrate front and the back side is processed corrosion thus formed needed for metal figure
Case.
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment
The structure of broadbands based on discrete component isolation network and three mould resonators merit filter-divider is as it is shown in figure 1, overlook
Figure as in figure 2 it is shown, relevant dimensions as shown in Figure 3.Medium substrate 10 relative dielectric constant used is 3.55, and thickness is
0.508mm, loss angle tangent is 0.0027.Input 50 ohm microstrip conduction band 11, Two-port netwerk outfan 50 ohm microstrip
The characteristic impedance of conduction band 21 and three port outfan 50 ohm microstrip conduction bands 31 is 50 ohm, and its width is W1=
1.08mm.In conjunction with Fig. 3, each dimensional parameters of merit filter-divider is as follows: W1=1.08mm, L1=24.3mm, W2=0.26mm, L2
=1.74mm, W3=0.26mm, L3=14.5mm, W4=5mm, L4=22mm, W5=0.2mm, L5=3.8mm, W6=0.1mm, L6
=12.4mm, W7=0.26mm, L7=23mm, W8=0.9mm, L8=2mm, W9=0.2mm, L9=10.2mm, W10=0.1mm,
L10=10.2mm, W11=1.8mm, L11=7.3mm, L12=7.3mm, L13=0.92mm, L14=0.97mm, g1=0.13mm, g2
=0.11mm.The entire area of merit filter-divider is 32 × 60mm, corresponding guide wavelength a size of 0.47 λg×0.88λg, wherein
λgFor the guide wavelength that passband central frequency is corresponding.
This example merit filter-divider modeling and simulating in electromagnetic simulation software HFSS.13.Fig. 4 is that in this example, merit is divided
The S parameter analogous diagram of wave filter, it can be seen that the passband central frequency of this merit filter-divider is 2.4GHz, opposite band
A width of 33%, in passband, return loss is less than 15dB.Four transmission zeros are had to make this example merit filter-divider outside passband respectively
There is good selectivity.
Fig. 5 is two output port amplitude differences of merit filter-divider in this example, it can be seen that this example merit is divided
Two Differential Output port amplitude differences in filter passband are within 0.012dB.
Fig. 6 is two output port phase contrasts of merit filter-divider in this example, it can be seen that this example merit is divided
Two Differential Output port phase contrasts in filter passband are within 0 ± 1.2 degree.
In sum, present invention broadband based on discrete component isolation network and three mould resonators merit filter-divider, in conjunction with
The step electric impedance resonator characteristic of three mould resonators and terminal short circuit achieves one, and selectivity is good, isolation is high, harmonics restraint
Three good Mould Breadth band merit filter-dividers, this merit filter-divider is highly suitable for modern wireless communication systems.
Claims (5)
1. a broadband merit filter-divider, it is characterised in that: include that lower surface is covered with the medium substrate of metal ground plate (102)
(101),
Upper surface at described medium substrate (101) is provided with input feeder line (1), the first outfan feeder line (2), the second outfan
Feeder line (3), the one or three mould resonator (4), the two or three mould resonator (5), the first ground connection step electric impedance resonator (6), second connect
Ground step electric impedance resonator (7), the 3rd ground connection step electric impedance resonator (8), isolation resistance (9).
Described one or three mould resonator (4), the input of the two or three mould resonator (5) couple with input feeder line (1) respectively, its
Outfan couples with the first outfan feeder line (2), the second outfan feeder line (3) respectively, described 3rd ground connection stepped impedance resonance
Device (8) is connected with the first outfan feeder line (2) and the second outfan feeder line (3), described first ground connection step electric impedance resonator (6)
It is connected with the outfan of the first outfan feeder line (2), the second ground connection step electric impedance resonator (7) and the second outfan feeder line (3)
Outfan be connected, the first ground connection step electric impedance resonator (6), the second ground connection step electric impedance resonator (7), the 3rd ground connection ladder
The other end of electric impedance resonator (8) is connected through medium substrate (101) with metal ground plate (102).
Broadband the most according to claim 1 merit filter-divider, it is characterised in that: described medium substrate (101) is rectangle, defeated
Entering to hold feeder line (1) near one broadside, input is located on this broadside, the first outfan feeder line (2), the second outfan feeder line
(3) near another broadside, the first outfan, the second outfan are respectively provided on the narrow limit of relative two.
Broadband the most according to claim 2 merit filter-divider, it is characterised in that:
Described input feeder line (1) includes the one 50 ohm microstrip conduction band vertical with Rectangular Enclosure with Participating Media substrate (101) broadside
(11) the first parallel with this broadside half-wavelength main transmission line (12) and the second half-wavelength main transmission line (13), the described 1st
The input of ohm microstrip conduction band (11) is positioned at a broadside midpoint of Rectangular Enclosure with Participating Media substrate (101), its input simultaneously with
First half-wavelength main transmission line (12) is connected with the top of the second half-wavelength main transmission line (13).
Broadband the most according to claim 3 merit filter-divider, it is characterised in that:
Described first outfan feeder line (2) includes that two 50 ohm microstrip parallel with Rectangular Enclosure with Participating Media substrate (101) broadside is led
Band (21) and the first microstrip transmission line (22) and the first quarter-wave coupling vertical with Rectangular Enclosure with Participating Media substrate (101) broadside
Zygonema (23)；
The input of described first microstrip transmission line (22) and the outfan of the first quarter-wave coupling line (23) are connected, its
The input of outfan and the 2nd 50 ohm microstrip conduction band (21) is connected, described 2nd 50 ohm microstrip conduction band (21) defeated
Go out end to be positioned on a narrow limit of Rectangular Enclosure with Participating Media substrate (101)；
Described first ground connection step electric impedance resonator (6) includes the first high impedance resonant tank device (61) and the first Low ESR resonator
(62), one end of the first Low ESR resonator (62) is vertically connected with the first microstrip transmission line (22)；
Described second outfan feeder line (3) includes that three 50 ohm microstrip parallel with Rectangular Enclosure with Participating Media substrate (101) broadside is led
Band (31) and the second microstrip transmission line (32) and the second quarter-wave coupling vertical with Rectangular Enclosure with Participating Media substrate (101) broadside
Zygonema (33)；
The input of described second microstrip transmission line (32) and the outfan of the second quarter-wave coupling line (33) are connected, its
The input of outfan and the 3rd 50 ohm microstrip conduction band (31) is connected, described 3rd 50 ohm microstrip conduction band (31) defeated
Go out end to be positioned on another narrow limit of Rectangular Enclosure with Participating Media substrate (101)；
Described second ground connection step electric impedance resonator (7) includes the second high impedance resonant tank device (71) and the second Low ESR resonator
(72), one end of the second Low ESR resonator (72) is vertically connected with the second microstrip transmission line (32)；
Described 3rd ground connection step electric impedance resonator (8) includes three-hypers electric impedance resonator (81) and the 3rd Low ESR resonator
(82), one end of the 3rd Low ESR resonator (8) respectively with the first quarter-wave coupling line (23) and the 1st/2nd
The input of wave coupled-line (33) is connected.
Broadband the most according to claim 4 merit filter-divider, it is characterised in that:
Described one or three mould resonator (4) includes the first quarter-wave resonance device (41), the second quarter-wave resonance
Device (42), the first plane of symmetry minor matters load Low ESR resonator (43), the first plane of symmetry minor matters load high impedance resonant tank device (44),
Described first quarter-wave resonance device (41) is parallel with Rectangular Enclosure with Participating Media substrate (101) broadside, the second quarter-wave
Long resonator (42) is vertical with Rectangular Enclosure with Participating Media substrate (101) broadside, and the first plane of symmetry minor matters load Low ESR resonator (43)
Axis and the first plane of symmetry minor matters load the axis of high impedance resonant tank device (44) and all become 45 degree with Rectangular Enclosure with Participating Media substrate (101) broadside
Angle,
First plane of symmetry minor matters load one end of Low ESR resonator (43) simultaneously with the first quarter-wave resonance device (41)
Outfan and the input of the second quarter-wave resonance device (42) be connected, the loading of its other end and the first plane of symmetry minor matters
The axis of high impedance resonant tank device (44) is connected,
Described first quarter-wave resonance device (41) and the first half-wavelength main transmission line (12) parallel coupling, the two or four/
One wave resonator (42) and the first quarter-wave coupling line (23) parallel coupling；
Described two or three mould resonator (5) includes the 3rd quarter-wave resonance device (51), the 4th quarter-wave resonance
Device (52), the second plane of symmetry minor matters load Low ESR resonator (53), the second plane of symmetry minor matters load high impedance resonant tank device (54),
Described 3rd quarter-wave resonance device (51) is parallel with Rectangular Enclosure with Participating Media substrate (101) broadside, the 4th quarter-wave
Long resonator (52) is vertical with Rectangular Enclosure with Participating Media substrate (101) broadside, and the second plane of symmetry minor matters load Low ESR resonator (53)
Axis and the second plane of symmetry minor matters load the axis of high impedance resonant tank device (54) and all become 135 with Rectangular Enclosure with Participating Media substrate (101) broadside
Degree angle,
Second plane of symmetry minor matters load one end of Low ESR resonator (53) simultaneously with the 3rd quarter-wave resonance device (51)
Outfan and the input of the 4th quarter-wave resonance device (52) be connected, the loading of its other end and the second plane of symmetry minor matters
The axis of high impedance resonant tank device (54) is connected,
Described 3rd quarter-wave resonance device (51) and the second half-wavelength main transmission line (13) parallel coupling, the four or four/
One wave resonator (52) and the second quarter-wave coupling line (33) parallel coupling.
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| CN113381142A (en) * | 2021-05-21 | 2021-09-10 | 南京智能高端装备产业研究院有限公司 | Three-passband power division filter with high frequency selectivity |
| CN113381143A (en) * | 2021-06-03 | 2021-09-10 | 南京工程学院 | Microstrip low-pass filter and transmission zero determination and frequency setting method |
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| CN106848511A (en) * | 2017-03-24 | 2017-06-13 | 电子科技大学 | A kind of double frequency filtering power splitter for being applied to WLAN |
| CN109326855A (en) * | 2018-08-31 | 2019-02-12 | 南京师范大学 | A kind of novel four function filter-divider of broadband |
| CN109273807A (en) * | 2018-09-13 | 2019-01-25 | 南京师范大学 | A kind of novel four function filter-divider of high performance wideband |
| CN110137641A (en) * | 2019-06-17 | 2019-08-16 | 辽宁工程技术大学 | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator |
| CN110518316B (en) * | 2019-09-07 | 2020-12-01 | 西南交通大学 | Multi-frequency band-pass filter based on single branch loading multimode resonator |
| CN110518316A (en) * | 2019-09-07 | 2019-11-29 | 西南交通大学 | A kind of multifrequency band-pass filter based on single minor matters load multimode resonator |
| CN111628257A (en) * | 2020-06-01 | 2020-09-04 | 中天宽带技术有限公司 | Filtering power divider |
| CN112133992A (en) * | 2020-10-15 | 2020-12-25 | 北京邮电大学 | Filtering power divider with high out-of-band rejection and full-band absorption functions |
| CN112133992B (en) * | 2020-10-15 | 2021-06-08 | 北京邮电大学 | Filtering power divider with high out-of-band rejection and full-band absorption functions |
| CN113381142A (en) * | 2021-05-21 | 2021-09-10 | 南京智能高端装备产业研究院有限公司 | Three-passband power division filter with high frequency selectivity |
| CN113381143A (en) * | 2021-06-03 | 2021-09-10 | 南京工程学院 | Microstrip low-pass filter and transmission zero determination and frequency setting method |
| CN113972456A (en) * | 2021-12-22 | 2022-01-25 | 南京典格通信科技有限公司 | Three-order wide stop band 5G microstrip filter |
| CN113972456B (en) * | 2021-12-22 | 2022-04-19 | 南京典格通信科技有限公司 | Three-order wide stop band 5G microstrip filter |
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