CN107611534A - A kind of new micro-strip cross-couplings triplexer - Google Patents
A kind of new micro-strip cross-couplings triplexer Download PDFInfo
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- CN107611534A CN107611534A CN201710721652.8A CN201710721652A CN107611534A CN 107611534 A CN107611534 A CN 107611534A CN 201710721652 A CN201710721652 A CN 201710721652A CN 107611534 A CN107611534 A CN 107611534A
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Abstract
The invention discloses a kind of new micro-strip cross-couplings triplexer, including matching minor matters circuit M, the first micro-strip cross-coupled filter F1, the second micro-strip cross-coupled filter F2 and the 3rd micro-strip cross-coupled filter F3, the triplexer forms reactance network by element with distributed parameters, is realized using multilayer LTCC technique.The present invention can transfer out broadband rf signal all the way from three different passages, realize the good isolation of three frequency signals, have the advantages that in light weight, size is small, easy debugging, reliability is high, electrical property batch uniformity is good, can be mass-produced, be widely used in the systems such as military affairs, the satellite communication of corresponding microwave frequency band.
Description
Technical field
The invention belongs to microwave radio field, and in particular to a kind of passive triplexer, particularly a kind of new micro-strip are intersected
Triplexer is coupled, can be widely applied in the systems such as military affairs, satellite communication.
Background technology
In the epoch of the electronic systems such as mobile communication, satellite communication rapid development, it is miniaturizated to a measurement microwave and penetrates
Frequency device performance good and bad important indicator, high-performance, low cost, being easy to batch production, to be increasingly becoming microwave device main
Developing direction.Multiplexer has important research meaning as a kind of device that can externally launch signal from different passages
Justice, be advantageous to the integration to working band and multiplexing technique, therefore people propose higher requirement to Microwave Multiplexer.
This component capabilities are described to refer mainly to indicate：Passband operating frequency range, pass band insertion loss, stop band frequency range, stopband
Decay, interport isolation, passband input/output voltage standing-wave ratio, insertion phase shift and temperature stability, size, weight, reliability
Deng.
LTCC Technology is a kind of Electronic Packaging integration technology, realizes that element constructs using multi-layer ceramics technique,
Both passive element can be fixed on inside medium substrate, active component can also be packaged in substrate surface be made it is passive/
Active integrated functional module.Microwave component based on LTCC technology has high quality factor, high integration, high stability etc. excellent
Point, and the miniaturization to element is significant, is widely used in miniaturized electronic equipment, mobile phone, tablet personal computer etc..
High-performance, high-quality can be realized using the technology, can be mass, high stability, small, the inexpensive miniature microwave device of loss
Part.
The content of the invention
It is an object of the invention to provide a kind of triplexer integrated by micro-strip cross-coupled filter, to realize size
It is small, in light weight, reliability is high, excellent electrical property, high yield rate, batch uniformity is good, cost is low, the miniature nothing that can be mass
Source triplexer.
To achieve the above object, now using following scheme：A kind of new micro-strip cross-couplings triplexer, including matching minor matters
Circuit M, the first micro-strip cross-coupled filter F1, the second micro-strip cross-coupled filter F2 and the filtering of the 3rd micro-strip cross-couplings
Device F3.
Match minor matters circuit M include input port Pl, input connecting line Lin, the first matched line Ll, the second matched line L2,
3rd matched line L3 and earth plate, the first matched line L1, the second matched line L2, the 3rd matched line L3 are by inputting connecting line Lin
Connect together, and input connecting line Lin and connect with input port P1, the first micro-strip cross-coupled filter F1 and the second micro-strip
Cross-coupled filter F2 is respectively arranged on the matching minor matters circuit M left and right sides, and the 3rd micro-strip cross-coupled filter F3 is located at
Match minor matters circuit M rear side.
First micro-strip cross-coupled filter F1 includes the first input connecting line Lin1, the first output connecting line Lout1, the
One impedance resonance cells D 1, the second impedance resonance cells D 2, the 3rd impedance resonance cells D 3, the 4th impedance resonance cells D 4,
One Z-shaped cross-couplings line Z1, the second Z-shaped cross-couplings line Z2, the output port P2 of 50 ohm of characteristic impedance, the first side print ground
Totally 5 laminar substrate, first layer are earth plate from top to bottom by GND1, the micro-strip cross-coupled filter F1, and the second layer is first Z-shaped
Cross-couplings line Z1, third layer are the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is the second Z-shaped cross-couplings line
Z2, layer 5 are earth plate.First Z-shaped cross-couplings line Z1 is located at the first impedance resonance cells D 1 and the 4th impedance resonance unit
D4 top, the second Z-shaped cross-couplings line Z2 are located at the lower section of the first impedance resonance cells D 1 and the 4th impedance resonance cells D 4,
And Z1 and Z2 is symmetrical on Y-axis.
The third layer impedance resonance cells D 1 of the first described micro-strip cross-coupled filter F1, D2, D3, D4 are from upper
Three layers of coupling strip line structure under, D1 are made up of D11, D12, D13, and D2 is made up of D21, D22, D23, D3 by D31, D32,
D33 is formed, and D4 is made up of D41, D42, D43, coupling strip line D11, D13, D21, D23, D31, D33, D41, D43 width phase
Deng, and one end is grounded, other end open circuit, D11, D13 and D41, D43 equal lengths, D21, D23 and D31, D33 equal lengths, slightly
It is longer than the length of four coupling lines such as D11, D12, D22, D32, D42 width are equal, and are less than above-mentioned line width, with above-mentioned coupling line
The relative one end ground connection of open end, other end open circuit, D22, D32, D42 are isometric, and slightly longer than D12.First impedance resonance unit
D1 second layer D12 is connected with the first input connecting line Lin1, the outputs of the second layer D42 of the 4th impedance resonance cells D 4 and first
Connecting line Lout1 is connected.
Second micro-strip cross-coupled filter F2 includes the second input connecting line Lin2, the second output connecting line Lout2, the
Five impedance resonance cells Ds 5, the 6th impedance resonance cells D 6, the 7th impedance resonance cells D 7, the 8th impedance resonance cells D 8,
Three Z-shaped cross-couplings line Z3, the 4th Z-shaped cross-couplings line Z4, the output port P3 of 50 ohm of characteristic impedance, the second side print ground
Totally 5 laminar substrate, first layer are earth plate from top to bottom by GND2, the micro-strip cross-coupled filter F2, and the second layer is the 3rd Z-shaped
Cross-couplings line Z3, third layer are the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is the 4th Z-shaped cross-couplings line
Z4, layer 5 are earth plate.3rd Z-shaped cross-couplings line Z3 is located at the 5th impedance resonance cells D 5 and the 8th impedance resonance unit
D8 top, the 4th Z-shaped cross-couplings line Z4 are located at the lower section of the 5th impedance resonance cells D 5 and the 8th impedance resonance cells D 8,
And Z3 and Z4 is symmetrical on Y-axis.
The third layer impedance resonance cells D 5 of the second described micro-strip cross-coupled filter F2, D6, D7, D8 are from upper
Three layers of coupling strip line structure under, D5 are made up of D51, D52, D53, and D6 is made up of D61, D62, D63, D7 by D71, D72,
D73 is formed, and D8 is made up of D81, D82, D83, coupling strip line D51, D53, D61, D63, D71, D73, D81, D83 width phase
Deng, and one end is grounded, other end open circuit, D61, D63 and D71, D73 equal lengths, D51, D53 equal length, slightly longer than D61
It is equal Deng four coupling lines, four coupling lines such as D81, D83 equal length, slightly shorter than D61, D52, D62, D72, D82 width, and
Less than above-mentioned line width, one end relative with above-mentioned coupling line open end ground connection, other end open circuit, D62, D72 are isometric, and D52 is slightly longer
In D62 and D72, D82 is slightly shorter than D62 and D72.The input connecting lines of the second layer D82 of 8th impedance resonance cells D 8 and second
Lin2 is connected, and the second layer D52 of the 5th impedance resonance cells D 5 is connected with the second output connecting line Lout2.
3rd micro-strip cross-coupled filter F3 includes the 3rd input connecting line Lin3, the 3rd output connecting line Lout3, the
Nine impedance resonance cells Ds 9, the tenth impedance resonance cells D 10, the 11st impedance resonance cells D 11, the 12nd impedance resonance unit
D12, the 5th Z-shaped cross-couplings line Z5, the output port P4 of 50 ohm of characteristic impedance, the 3rd side print ground GND3, the 4th side print ground
Totally 4 laminar substrate, first layer are earth plate from top to bottom by GND4, the micro-strip cross-coupled filter F3, and the second layer is strap
The impedance resonance elementary layer of shape line composition, third layer is the 5th Z-shaped cross-couplings line Z5, and the 4th layer is earth plate.5th Z-shaped friendship
Fork coupling line Z5 is located at the lower section of the 9th impedance resonance cells D 9 and the 12nd impedance resonance cells D 12.
The second layer impedance resonance cells D 9 of the 3rd described micro-strip cross-coupled filter F3, D10, D11, D12 are
Two layers of coupling strip line structure, D9 are made up of D91, D92, and D10 is made up of D101, D102, and D11 is made up of D111, D112, D12
It is made up of D121, D122, coupling strip line D91, D101, D111, D121 width is equal, and one end is grounded, other end open circuit,
D101, D111 equal length, slightly shorter than D91, D121 equal length, D101, D111, D92, D102, D112, D122 width phase
Deng, and it is more than above-mentioned line width, one end relative with above-mentioned coupling line open end ground connection, other end open circuit, D102, D112 are isometric,
D92, D122 are isometric, slightly shorter than D102, D112.The output connecting lines of the second layer D92 of 9th impedance resonance cells D 9 and the 3rd
Lout3 is connected, and the second layer D122 of the 12nd impedance resonance cells D 12 is connected with the 3rd input connecting line Lin3.
The first output connecting line Lout1 of the first micro-strip cross-coupled filter F1 and match the of minor matters circuit M
One matched line Ll connects, the second micro-strip cross-coupled filter F2 the second output connecting line Lout2's and matching minor matters circuit M
Second matched line L2 connects, the 3rd micro-strip cross-coupled filter F3 the 3rd output connecting line Lout3 and matching minor matters circuit M
The 3rd matched line L3 connect.
The first micro-strip cross-coupled filter F1, the second micro-strip cross-coupled filter F2, the 3rd micro-strip intersect coupling
It is level Four distribution bandpass filter to close wave filter F3, and has transmission zero.
The input port P1, output port P2, output port P3 and output port P4 are surface encapsulation characteristic impedance
50 ohm of matching port.A kind of new micro-strip cross-couplings triplexer is real using the processing of multilayer LTCC technique
It is existing.
A kind of new micro-strip cross-couplings triplexer of the present invention, the microwave of three parts is integrated using LTCC technology
Wave filter, using distributed frame, realize that size is small, in light weight, reliability is high, excellent electrical property, high yield rate, batch are consistent
Property it is good, cost is low, be easy to batch production miniature microwave triplexer.The present invention is processed using multilayer LTCC technique,
Three-dimensional integration, element with distributed parameters multilayer folding, and outer surface gold are used with high conductivity, high stability, and structure
Belong to screen layer encapsulation, ground connection, greatly reduce the volume of triplexer, realize miniaturization.
Brief description of the drawings
Fig. 1 is a kind of monnolithic case structural representation of new micro-strip cross-couplings triplexer of the present invention.
Fig. 2 is a kind of new micro-strip cross-couplings triplexer matching minor matters circuit M internal structure schematic diagram of the present invention.
Fig. 3 is the side view of the first micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Fig. 4 is the vertical view of the first micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Fig. 5 is the internal junction of the first micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Structure schematic diagram.
Fig. 6 is the side view of the second micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Fig. 7 is the vertical view of the second micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Fig. 8 is the internal junction of the second micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Structure schematic diagram.
Fig. 9 is the side view of the 3rd micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Figure 10 is the vertical view of the 3rd micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Figure.
Figure 11 is the inside of the 3rd micro-strip cross-coupled filter in a kind of new micro-strip cross-couplings triplexer of the present invention
Structural representation.
Figure 12 is a kind of amplitude-versus-frequency curve of new micro-strip cross-couplings triplexer output standing wave of the present invention.
Figure 13 is a kind of amplitude-versus-frequency curve of first output port of new micro-strip cross-couplings triplexer of the invention.
Figure 14 is a kind of amplitude-versus-frequency curve of second output port of new micro-strip cross-couplings triplexer of the invention.
Figure 15 is a kind of amplitude-versus-frequency curve of the new output port of micro-strip cross-couplings triplexer the 3rd of the present invention.
Figure 16 is a kind of performance chart of new micro-strip cross-couplings triplexer of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
It is a kind of new micro-strip cross-couplings triplexer as shown in Figure 1, including matching minor matters circuit M, the first micro-strip are intersected
Coupling filter F1, the second micro-strip cross-coupled filter F2 and the 3rd micro-strip cross-coupled filter F3.
Matching minor matters circuit M includes input port Pl, input connecting line Lin, the first matched line Ll, second as shown in Figure 2
Matched line L2, the 3rd matched line L3 and earth plate, the first matched line L1, the second matched line L2, the 3rd matched line L3 pass through input
Connecting line Lin is connected together, and is inputted connecting line Lin and connected with input port P1, the first micro-strip cross-coupled filter F1
The matching minor matters circuit M left and right sides, the filter of the 3rd micro-strip cross-couplings are respectively arranged on the second micro-strip cross-coupled filter F2
Rear sides of the ripple device F3 located at matching minor matters circuit M.
The first micro-strip cross-coupled filter F1 as shown in Figures 3 and 4 includes the first input connecting line Lin1, the first output
Connecting line Lout1, the first impedance resonance cells D 1, the second impedance resonance cells D 2, the 3rd impedance resonance cells D 3, the 4th impedance
Resonant element D4, the first Z-shaped cross-couplings line Z1, the second Z-shaped cross-couplings line Z2, the output port of 50 ohm of characteristic impedance
P2, the first side print ground GND1, totally 5 laminar substrate, first layer are earth plate to the micro-strip cross-coupled filter F1 from top to bottom, the
Two layers are the first Z-shaped cross-couplings line Z1, and third layer is the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is second
Z-shaped cross-couplings line Z2, layer 5 are earth plate.First Z-shaped cross-couplings line Z1 is located at the first impedance resonance cells D 1 and
The top of four impedance resonance cells Ds 4, the second Z-shaped cross-couplings line Z2 is located at the first impedance resonance cells D 1 and the 4th impedance is humorous
The lower section of cells D of shaking 4, and Z1 and Z2 is symmetrical on Y-axis.
The third layer impedance resonance cells D 1 of the first described micro-strip cross-coupled filter F1, D2, D3, D4 are from upper
Three layers of coupling strip line structure under, D1 are made up of D11, D12, D13, and D2 is made up of D21, D22, D23, D3 by D31, D32,
D33 is formed, and D4 is made up of D41, D42, D43, coupling strip line D11, D13, D21, D23, D31, D33, D41, D43 width phase
Deng, and one end is grounded, other end open circuit, D11, D13 and D41, D43 equal lengths, D21, D23 and D31, D33 equal lengths, slightly
It is longer than the length of four coupling lines such as D11, D12, D22, D32, D42 width are equal, and are less than above-mentioned line width, with above-mentioned coupling line
The relative one end ground connection of open end, other end open circuit, D22, D32, D42 are isometric, and slightly longer than D12.First impedance resonance unit
D1 second layer D12 is connected with the first input connecting line Lin1, the outputs of the second layer D42 of the 4th impedance resonance cells D 4 and first
Connecting line Lout1 is connected.
The second micro-strip cross-coupled filter F2 as illustrated in Figures 5 and 6 includes the second input connecting line Lin2, the second output
Connecting line Lout2, the 5th impedance resonance cells D 5, the 6th impedance resonance cells D 6, the 7th impedance resonance cells D 7, the 8th impedance
Resonant element D8, the 3rd Z-shaped cross-couplings line Z3, the 4th Z-shaped cross-couplings line Z4, the output port of 50 ohm of characteristic impedance
P3, the second side print ground GND2, totally 5 laminar substrate, first layer are earth plate to the micro-strip cross-coupled filter F2 from top to bottom, the
Two layers are the 3rd Z-shaped cross-couplings line Z3, and third layer is the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is the 4th
Z-shaped cross-couplings line Z4, layer 5 are earth plate.3rd Z-shaped cross-couplings line Z3 is located at the 5th impedance resonance cells D 5 and
The top of eight impedance resonance cells Ds 8, the 4th Z-shaped cross-couplings line Z4 is located at the 5th impedance resonance cells D 5 and the 8th impedance is humorous
The lower section of cells D of shaking 8, and Z3 and Z4 is symmetrical on Y-axis.
The third layer impedance resonance cells D 5 of the second described micro-strip cross-coupled filter F2, D6, D7, D8 are from upper
Three layers of coupling strip line structure under, D5 are made up of D51, D52, D53, and D6 is made up of D61, D62, D63, D7 by D71, D72,
D73 is formed, and D8 is made up of D81, D82, D83, coupling strip line D51, D53, D61, D63, D71, D73, D81, D83 width phase
Deng, and one end is grounded, other end open circuit, D61, D63 and D71, D73 equal lengths, D51, D53 equal length, slightly longer than D61
It is equal Deng four coupling lines, four coupling lines such as D81, D83 equal length, slightly shorter than D61, D52, D62, D72, D82 width, and
Less than above-mentioned line width, one end relative with above-mentioned coupling line open end ground connection, other end open circuit, D62, D72 are isometric, and D52 is slightly longer
In D62 and D72, D82 is slightly shorter than D62 and D72.The input connecting lines of the second layer D82 of 8th impedance resonance cells D 8 and second
Lin2 is connected, and the second layer D52 of the 5th impedance resonance cells D 5 is connected with the second output connecting line Lout2.
The 3rd micro-strip cross-coupled filter F3 as shown in Figures 6 and 7 includes the 3rd input connecting line Lin3, the 3rd output
Connecting line Lout3, the 9th impedance resonance cells D 9, the tenth impedance resonance cells D 10, the 11st impedance resonance cells D the 11, the tenth
Two impedance resonance cells Ds 12, the 5th Z-shaped cross-couplings line Z5, the output port P4 of 50 ohm of characteristic impedance, the 3rd side print ground
GND3, the 4th side print ground GND4, totally 4 laminar substrate, first layer are earth plate to the micro-strip cross-coupled filter F3 from top to bottom,
The second layer is the impedance resonance elementary layer of coupling strip line composition, and third layer is the 5th Z-shaped cross-couplings line Z5, and the 4th layer is to connect
Floor.5th Z-shaped cross-couplings line Z5 is located at the lower section of the 9th impedance resonance cells D 9 and the 12nd impedance resonance cells D 12.
The second layer impedance resonance cells D 9 of the 3rd described micro-strip cross-coupled filter F3, D10, D11, D12 are
Two layers of coupling strip line structure, D9 are made up of D91, D92, and D10 is made up of D101, D102, and D11 is made up of D111, D112, D12
It is made up of D121, D122, coupling strip line D91, D101, D111, D121 width is equal, and one end is grounded, other end open circuit,
D101, D111 equal length, slightly shorter than D91, D121 equal length, D101, D111, D92, D102, D112, D122 width phase
Deng, and it is more than above-mentioned line width, one end relative with above-mentioned coupling line open end ground connection, other end open circuit, D102, D112 are isometric,
D92, D122 are isometric, slightly shorter than D102, D112.The output connecting lines of the second layer D92 of 9th impedance resonance cells D 9 and the 3rd
Lout3 is connected, and the second layer D122 of the 12nd impedance resonance cells D 12 is connected with the 3rd input connecting line Lin3.
The first output connecting line Lout1 of the first micro-strip cross-coupled filter F1 and match the of minor matters circuit M
One matched line Ll connects, the second micro-strip cross-coupled filter F2 the second output connecting line Lout2's and matching minor matters circuit M
Second matched line L2 connects, the 3rd micro-strip cross-coupled filter F3 the 3rd output connecting line Lout3 and matching minor matters circuit M
The 3rd matched line L3 connect.
The first micro-strip cross-coupled filter F1, the second micro-strip cross-coupled filter F2, the 3rd micro-strip intersect coupling
It is level Four distribution bandpass filter to close wave filter F3, and has transmission zero.
The input port P1, output port P2, output port P3 and output port P4 are surface encapsulation characteristic impedance
50 ohm of matching port.A kind of new micro-strip cross-couplings triplexer is real using the processing of multilayer LTCC technique
It is existing.
A kind of new micro-strip cross-couplings triplexer of the present invention is T-shaped structure.From performance curve it can be seen from the figure that
Three passbands of the triplexer are respectively 3.4GHz-3.7GHz, 5GHz-5.45GHz and 8.2GHz-8.6GHz, input port
Return loss is better than 15dB, and output port insertion loss is better than 2.5dB.
A kind of new micro-strip cross-couplings triplexer of the present invention, including matching minor matters circuit M, the first micro-strip intersect coupling
Wave filter F1, the second micro-strip cross-coupled filter F2 and the 3rd micro-strip cross-coupled filter F3 are closed, wave filter has distribution
Formula structure, realized using multilayer LTCC technique.The present invention have easily debugging, in light weight, size is small, reliability is high,
Temperature stability is high, electrical property batch uniformity is good, is easy to the advantages that production in enormous quantities, is widely used in corresponding microwave frequency band
In the circuit harsh to circuit miniaturization, electrical property, reliability requirements such as military communication, satellite communication and system.
Claims (5)
- A kind of 1. new micro-strip cross-couplings triplexer, it is characterised in that：Intersect coupling including matching minor matters circuit M, the first micro-strip Close wave filter F1, the second micro-strip cross-coupled filter F2 and the 3rd micro-strip cross-coupled filter F3；Matching minor matters circuit M includes input port Pl, input connecting line Lin, the first matched line Ll, the second matched line L2, the 3rd Matched line L3 and earth plate, the first matched line L1, the second matched line L2, the 3rd matched line L3 are by inputting connecting line Lin connections To together, and input connecting line Lin and connect with input port P1, the first micro-strip cross-coupled filter F1 and the second micro-strip intersection Coupling filter F2 is respectively arranged on the matching minor matters circuit M left and right sides, and the 3rd micro-strip cross-coupled filter F3 is located at matching Minor matters circuit M rear side；First micro-strip cross-coupled filter F1 includes the first input connecting line Lin1, the first output connecting line Lout1, the first resistance Antiresonance cells D 1, the second impedance resonance cells D 2, the 3rd impedance resonance cells D 3, the 4th impedance resonance cells D 4, first are Z-shaped Cross-couplings line Z1, the second Z-shaped cross-couplings line Z2, the output port P2 of 50 ohm of characteristic impedance, the first side print ground GND1, institute Stating micro-strip cross-coupled filter F1, totally 5 laminar substrate, first layer are earth plate from top to bottom, and the second layer is the first Z-shaped intersection coupling Zygonema Z1, third layer are the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is the second Z-shaped cross-couplings line Z2, the Five layers are earth plate；First Z-shaped cross-couplings line Z1 both ends are humorous positioned at the first impedance resonance cells D 1 and the 4th impedance respectively The top of cells D of shaking 4, the second Z-shaped cross-couplings line Z2 both ends are located at the first impedance resonance cells D 1 and the 4th impedance respectively Resonant element D4 lower section, and Z1 and Z2 is symmetrical on Y-axis；The third layer impedance resonance elementary layer of the first described micro-strip cross-coupled filter F1 include D1, D2, D3, D4 be from Three layers of coupling strip line structure under up to, upper and lower two layers of banding line position, size are symmetrical, and intermediate layer strip line misplaces coupling therewith Close, the length of one end exceeds upper and lower two layers, and the other end is then slightly less than two layers up and down, and line width is slightly less than two layers of strip line up and down； D1 is made up of D11, D12, D13, and D2 is made up of D21, D22, D23, and D3 is made up of D31, D32, D33, and D4 is by D41, D42, D43 group Into, coupling strip line D11, D13, D21, D23, D31, D33, D41, D43 width is equal, and one end is grounded, other end open circuit, D11, D13 and D41, D43 equal lengths, D21, D23 and D31, the length of four coupling lines such as D33 equal lengths, slightly longer than D11 Degree, D12, D22, D32, D42 width are equal, and are less than above-mentioned line width, one end relative with above-mentioned coupling line open end ground connection, separately One end is opened a way, and D22, D32, D42 are isometric, and slightly longer than D12；The inputs of the second layer D12 of first impedance resonance cells D 1 and first Connecting line Lin1 is connected, and the second layer D42 of the 4th impedance resonance cells D 4 is connected with the first output connecting line Lout1；First resistance Antiresonance cells D 1, the second impedance resonance cells D 2, the 3rd impedance resonance cells D 3, the horizontal direction of the 4th impedance resonance cells D 4 It is placed in parallel, and each adjacent cells spacing is equal；Second micro-strip cross-coupled filter F2 includes the second input connecting line Lin2, the second output connecting line Lout2, the 5th resistance Antiresonance cells D 5, the 6th impedance resonance cells D 6, the 7th impedance resonance cells D 7, the 8th impedance resonance cells D the 8, the 3rd are Z-shaped Cross-couplings line Z3, the 4th Z-shaped cross-couplings line Z4, the output port P3 of 50 ohm of characteristic impedance, the second side print ground GND2, institute Stating micro-strip cross-coupled filter F2, totally 5 laminar substrate, first layer are earth plate from top to bottom, and the second layer is the 3rd Z-shaped intersection coupling Zygonema Z3, third layer are the impedance resonance elementary layer of coupling strip line composition, and the 4th layer is the 4th Z-shaped cross-couplings line Z4, the Five layers are earth plate；3rd Z-shaped cross-couplings line Z3 both ends are respectively positioned at the 5th impedance resonance cells D 5 and the 8th impedance resonance cells D 8 Top, the 4th Z-shaped cross-couplings line Z4 both ends are located at the 5th impedance resonance cells D 5 and the 8th impedance resonance cells D 8 respectively Lower section, and Z3 and Z4 is symmetrical on Y-axis；It is from top to bottom that second micro-strip cross-coupled filter F2 third layer impedance resonance elementary layer, which includes D5, D6, D7, D8, Three layers of coupling strip line structure, upper and lower two layers of banding line position, size are symmetrical, and intermediate layer strip line misplaces coupling therewith, one The length at end exceeds upper and lower two layers, and the other end is then slightly less than two layers up and down, and line width is slightly less than two layers of strip line up and down；D5 by D51, D52, D53 are formed, and D6 is made up of D61, D62, D63, and D7 is made up of D71, D72, D73, and D8 is made up of D81, D82, D83, Coupling strip line D51, D53, D61, D63, D71, D73, D81, D83 width is equal, and one end is grounded, other end open circuit, D61, D63 and four coupling lines such as D71, D73 equal length, slightly longer than D51, D53 equal length, D61, D81, D83 equal length, slightly It is shorter than four coupling lines such as D61, D52, D62, D72, D82 width are equal, and are less than above-mentioned line width, with above-mentioned coupling line open end Relative one end ground connection, other end open circuit, D62, D72 are isometric, and D52 is slightly longer than D62 and D72, and D82 is slightly shorter than D62 and D72；The The second layer D82 of eight impedance resonance cells Ds 8 is connected with the second input connecting line Lin2, and the second of the 5th impedance resonance cells D 5 Layer D52 is connected with the second output connecting line Lout2；5th impedance resonance cells D 5, the 6th impedance resonance cells D 6, the 7th impedance Resonant element D7, the horizontal direction parallel of the 8th impedance resonance cells D 8 are placed, and each adjacent cells spacing is equal；3rd micro-strip cross-coupled filter F3 includes the 3rd input connecting line Lin3, the 3rd output connecting line Lout3, the 9th resistance Antiresonance cells D 9, the tenth impedance resonance cells D 10, the 11st impedance resonance cells D 11, the 12nd impedance resonance cells D 12, 5th Z-shaped cross-couplings line Z5, the output port P4 of 50 ohm of characteristic impedance, the 3rd side print ground GND3, the 4th side print ground GND4, Totally 4 laminar substrate, first layer are earth plate to the micro-strip cross-coupled filter F3 from top to bottom, and the second layer is coupling strip line group Into impedance resonance elementary layer, third layer is the 5th Z-shaped cross-couplings line Z5, and the 4th layer is earth plate；5th Z-shaped cross-couplings line Z5 both ends are located at the 9th impedance resonance cells D 9 and the 12nd impedance resonance unit respectively D12 lower section；3rd micro-strip cross-coupled filter F3 second layer impedance resonance cells D 9, D10, D11, D12 are two layers of straps Shape cable architecture, upper and lower two layers of strip line dislocation coupling, upper strata line width are slightly less than lower floor's line width；D9 is made up of D91, D92, D10 by D101, D102 are formed, and D11 is made up of D111, D112, and D12 is made up of D121, D122, coupling strip line D91, D101, D111, D121 width is equal, and one end is grounded, other end open circuit, D101, D111 equal length, and D91, D121 equal length are slightly short In D101, D111, D92, D102, D112, D122 width are equal, and are more than above-mentioned line width, relative with above-mentioned coupling line open end One end ground connection, the other end open circuit, D102, D112 are isometric, and D92, D122 are isometric, slightly shorter than D102, D112；The second layer D92 of 9th impedance resonance cells D 9 is connected with the 3rd output connecting line Lout3, the 12nd impedance resonance unit D12 second layer D122 is connected with the 3rd input connecting line Lin3；9th impedance resonance cells D 9, the tenth impedance resonance unit D10, the 11st impedance resonance cells D 11, the horizontal direction parallel of the 12nd impedance resonance cells D 12 are placed, and each adjacent cells Spacing is equal.
- 2. new micro-strip cross-couplings triplexer according to claim 1, it is characterised in that：First micro-strip intersects coupling The the first output connecting line Lout1 for closing wave filter F1 and the first matched line Ll for matching minor matters circuit M connect, and the second micro-strip is intersected Coupling filter F2 the second output connecting line Lout2 and matching minor matters circuit M the second matched line L2 connect, and the 3rd micro-strip is handed over Fork coupling filter F3 the 3rd output connecting line Lout3 and matching minor matters circuit M the 3rd matched line L3 connect.
- 3. new micro-strip cross-couplings triplexer according to claim 1, it is characterised in that：First micro-strip intersects coupling It is level Four distribution band to close wave filter F1, the second micro-strip cross-coupled filter F2, the 3rd micro-strip cross-coupled filter F3 Bandpass filter, and there is transmission zero.
- 4. new micro-strip cross-couplings triplexer according to claim 1, it is characterised in that：The input port P1, it is defeated Exit port P2, output port P3 and output port P4 are the matching port of 50 ohm of surface encapsulation characteristic impedance.
- 5. new micro-strip cross-couplings triplexer according to claim 1 or 2, it is characterised in that：The triplexer uses The processing of multilayer LTCC technique is realized.
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| CN103413993A (en) * | 2013-08-01 | 2013-11-27 | 南京理工大学 | Distributed miniature band-pass balance filter |
| CN103794838A (en) * | 2013-08-01 | 2014-05-14 | 南京理工大学 | LTCC-based S-waveband high-performance micro band-pass balanced filter |
| CN105762445A (en) * | 2016-04-19 | 2016-07-13 | 戴永胜 | SHF waveband micro type microwave duplexer |
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2017
- 2017-08-22 CN CN201710721652.8A patent/CN107611534A/en active Pending
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|---|---|---|---|---|
| CN103413993A (en) * | 2013-08-01 | 2013-11-27 | 南京理工大学 | Distributed miniature band-pass balance filter |
| CN103794838A (en) * | 2013-08-01 | 2014-05-14 | 南京理工大学 | LTCC-based S-waveband high-performance micro band-pass balanced filter |
| CN105762445A (en) * | 2016-04-19 | 2016-07-13 | 戴永胜 | SHF waveband micro type microwave duplexer |
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