CN204067530U - A kind of two-frequency duplex device using racemosus nodel line to load matching network - Google Patents
A kind of two-frequency duplex device using racemosus nodel line to load matching network Download PDFInfo
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- CN204067530U CN204067530U CN201420404201.3U CN201420404201U CN204067530U CN 204067530 U CN204067530 U CN 204067530U CN 201420404201 U CN201420404201 U CN 201420404201U CN 204067530 U CN204067530 U CN 204067530U
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Abstract
The utility model discloses a kind of two-frequency duplex device using racemosus nodel line to load matching network, microstrip line construction is used to realize, be produced on the micro-band plate of double-sided copper-clad in the manner of a printed circuit board, comprise signal incoming feeder port port1, signal output feeder port port2 and port3, four path filters and racemosus nodel line and load matching network, this matching network is made up of two short-circuited transmission lines and two open circuited transmission lines.Racemosus nodel line is used to load the two-frequency duplex device of matching network, can when arbitrary group of resonator works, another group resonator is all in open-circuit condition, improves the inhibition between passage; This matching network volume is little simultaneously, simplicity of design, can design according to Theoretical Design formula, changes length value and the resistance value of transmission line, and the scope of application is wider more flexible.
Description
Technical field
The utility model relates to the technical field that the utility model relates to Frequency Division Duplexing (FDD), particularly a kind of two-frequency duplex device using racemosus nodel line to load matching network.
Background technology
Due to wireless communication technology develop rapidly and people to radio communication need day by day increase, current market 2G, 3G, 4G network is also deposited, many wireless terminals, such as mobile phone, panel computer etc., all wishing when designing can compatible multiple communication standard, this service that terminal use just can be allowed simultaneously to enjoy different operators provide.
FDD technology common in communication industry, requires to have two communication ports: a data feedback channel and a down going channel.Now, just duplexer must be used in communication system.Traditional duplexer only can work in one group of up-downgoing frequency, and for the market that multiple communication standard coexists, such duplexer can not meet the demands.
Two-frequency duplex device, i.e. four-way duplexer, can work in two groups of up-downgoing frequencies simultaneously, greatly reduces volume and the cost of communication system.Now existing multiple scholar proposes different four-way diplexer structures.The design of duplexer is mainly matching network.Core innovation of the present utility model is that proposition one is applicable to the novel racemosus nodel line loading matching network structure of four-way duplexer.The duplexer of many passbands requires there is good isolation effect between multiple passband, requires that device size is little as far as possible simultaneously.
The high isolation microstrip duplexer of a kind of branched structure of data display, the structure chart of this duplexer as shown in Figure 1, specifically please refer to " number of patent application: 201310547087.X, patent name: the high isolation microstrip duplexer of branched structure, patentee: the China Measures Institute ".Its matching network used is as shown in 5 and 11 in Fig. 1, and this matching network only uses two simple uniform transmission lines, therefore, only can meet two passage duplexers to the requirement of isolation, but be difficult to the insulated degree requirement of the duplexer meeting four-way.
The another kind that data shows is based on the micro-strip duplexer of electromagnetism hybrid coupled, the structure chart of this duplexer as shown in Figure 2, specifically please refer to " number of patent application: 201310582773.0, patent name: a kind of micro-strip duplexer based on electromagnetism hybrid coupled, patentee: South China Science & Engineering University ".Its matching network used is T connector, as shown in Fig. 28.Although use T connector as matching network in the technical scheme of this patent, equally only can meet the insulated degree requirement of double-channel duplex device, be difficult to the insulated degree requirement of the duplexer meeting four-way.
The duplexer of another four passband of data display, the structure chart of this duplexer as shown in Figure 3, specifically please refer to Hung-Wei Wu, Shih-Hua Huang and Yu-Fu Chen delivers the article being entitled as " Design of New Quad-Channel Diplexer With Compact Circuit Size " on the top periodical of the art " IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS ".This duplexer is made up of two groups of resonators (be 1. 2. a group, be 3. 4. a group) and a matching network, and matching network uses T connector, as the L in Fig. 3
3, L
4shown in.Such matching network, wherein during one group of resonator works, cannot ensure that another group resonator is in open-circuit condition, therefore be difficult to realize four passages and all obtain good isolation effect.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, a kind of two-frequency duplex device using racemosus nodel line to load matching network is provided, the novel matching network that a kind of racemosus nodel line loads is disclosed in duplexer of the present utility model, the insulated degree requirement of two passages, four-way duplexer can be met, fill up the blank that prior art designs about two-frequency duplex device matching network.
The purpose of this utility model is achieved through the following technical solutions:
A kind of two-frequency duplex device using racemosus nodel line to load matching network, be produced on the micro-band plate of two-sided shoe copper in the manner of a printed circuit board, the same face of the micro-band plate of described double-sided copper-clad is manufactured with respectively signal incoming feeder port port1, signal output feeder port port2, signal output feeder port port3, first passage filter, second channel filter, third channel filter, four-way filter first short-circuited transmission line, second short-circuited transmission line, first open circuited transmission line, second open circuited transmission line, first output feeder, second output feeder, 3rd output feeder, 4th output feeder, the another side of the micro-band plate of this double-sided copper-clad is for covering copper ground plate, the bottom of the first output feeder is connected in reverse L-type with the bottom of signal output feeder port port2 is vertical, second output feeder is connected with the lower horizontal of signal output feeder port port2, be connected with the bottom of the first output feeder is vertical, and the first output feeder and the second output feeder form an output feeder network simultaneously, the bottom of the 3rd output feeder is connected in L-type with the bottom of signal output feeder port port3 is vertical, 4th output feeder is connected with the lower horizontal of signal output feeder port port3, be connected with the bottom of the 3rd output feeder is vertical, and the 3rd output feeder and the 4th output feeder form an output feeder network simultaneously, first short-circuited transmission line and the second short-circuited transmission line bottom connect and compose U-shaped, between the first output feeder and the 3rd output feeder, be connected with feeder line port port1 is vertical in the middle of the lower end of this U-shaped, first open circuited transmission line is connected in reverse L-type with the first short-circuited transmission line is vertical, second open circuited transmission line is connected in L-type with the second short-circuited transmission line is vertical, and the second output feeder, first open circuited transmission line, second open circuited transmission line, 4th output feeder simultaneously horizontally set and be positioned on same level line, one end of second output feeder and the first open circuited transmission line is adjacent exists coupling gap, one end of second open circuited transmission line and the 4th output feeder is adjacent exists coupling gap, described first passage filter, second channel filter are between the first output feeder and the first short-circuited transmission line, wherein first passage filter is positioned at directly over the second output feeder and the first open circuited transmission line, and second channel filter is positioned at immediately below the second output feeder and the first open circuited transmission line, described third channel filter, four-way filter are between the 3rd output feeder and the second short-circuited transmission line, wherein third channel filter is positioned at directly over the second open circuited transmission line and the 4th output feeder, and four-way filter is positioned at immediately below the second open circuited transmission line and the 4th output feeder.
Preferably, the same face of the micro-band plate of described double-sided copper-clad is also manufactured with the 5th ground short circuit via hole and the 6th ground short circuit via hole, described first passage filter is by first micro-band, second micro-band, 3rd micro-band, 4th micro-band, 5th micro-band, 6th micro-band, 7th micro-band, 8th micro-band composition, wherein first micro-band, 3rd micro-band, 6th micro-band, 8th micro-band is transverse horizontal, is parallel to the second output feeder and the first open circuited transmission line, second micro-band, 4th micro-band, 5th micro-band, 7th micro-band is longitudinal, is parallel to the first output feeder and the first short-circuited transmission line, two ends and second longitudinal micro-band of the 3rd horizontal micro-band, the top of the 4th micro-band connects and composes inverted u-shaped, two ends and the 5th longitudinal micro-band of the 6th horizontal micro-band, the top of the 7th micro-band connects and composes inverted u-shaped, coupling gap is there is between 4th micro-band and the 5th micro-band, and the 4th micro-band is connected by the 5th ground short circuit via hole with the bottom of the 5th micro-band, wherein directly over the coupling gap of the 5th ground short circuit via hole between the second output feeder and the first open circuited transmission line, first micro-band is vertical with the bottom of second micro-band connects and composes reverse L-type, and the 8th micro-band is vertical with the bottom of the 7th micro-band connects and composes L-type,
Described third channel filter is by the 9th micro-band, tenth micro-band, 11 micro-band, 12 micro-band, 13 micro-band, 14 micro-band, 15 micro-band, 16 micro-band composition, wherein the 9th micro-band, 11 micro-band, 14 micro-band, 16 micro-band is transverse horizontal, is parallel to the second open circuited transmission line and the 4th output feeder, the tenth micro-band, 12 micro-band, 13 micro-band, 15 micro-band is longitudinal, is parallel to the 3rd output feeder and the second short-circuited transmission line, two ends and the tenth longitudinal micro-band of the 11 horizontal micro-band, the top of the 12 micro-band connects and composes inverted u-shaped, two ends and the 13 longitudinal micro-band of the 14 horizontal micro-band, the top of the 15 micro-band connects and composes inverted u-shaped, coupling gap is there is between 12 micro-band and the 13 micro-band, and the 12 micro-band is connected by the 6th ground short circuit via hole with the bottom of the 13 micro-band, wherein directly over the coupling gap of the 6th ground short circuit via hole between the second open circuited transmission line and the 4th output feeder, 9th micro-band is vertical with the bottom of the tenth micro-band connects and composes reverse L-type, and the 16 micro-band is vertical with the bottom of the 15 micro-band connects and composes L-type.
Preferably, described second channel filter is by the 17 micro-band, 18 micro-band, 19 micro-band, 20 micro-band, 21 micro-band, 22 micro-band composition, wherein the 17 micro-band, 19 micro-band, 20 micro-band, 22 micro-band is transverse horizontal, be parallel to the second open circuited transmission line and the 4th output feeder, 24 micro-band, 27 micro-band is longitudinal, be parallel to the first output feeder and the first short-circuited transmission line, two ends and 17 horizontal micro-bands of the 18 longitudinal micro-band, the bottom of the 19 micro-band connects and composes the U-shaped of overturning shape left, two ends and 20 horizontal micro-bands of the 21 longitudinal micro-band, the bottom of the 22 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is between 18 micro-band and the 21 micro-band, immediately below coupling gap between the second output feeder and the first open circuited transmission line.
Described four-way filter is by the 23 micro-band, 24 micro-band, 25 micro-band, 26 micro-band, 27 micro-band, 28 micro-band composition, wherein the 23 micro-band, 25 micro-band, 26 micro-band, 28 micro-band is transverse horizontal, be parallel to the second output feeder and the first open circuited transmission line, 18 micro-band, 21 micro-band is longitudinal, be parallel to the 3rd output feeder and the second short-circuited transmission line, two ends and 23 horizontal micro-bands of the 24 longitudinal micro-band, the bottom of the 25 micro-band connects and composes the U-shaped of overturning shape left, two ends and 26 horizontal micro-bands of the 27 longitudinal micro-band, the bottom of the 28 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is between 24 micro-band and the 27 micro-band, immediately below coupling gap between the second open circuited transmission line and the 4th output feeder.
Preferably, described first short-circuited transmission line, the second short-circuited transmission line, the first open circuited transmission line and the second open circuited transmission line jointly form racemosus nodel line and load matching network, and the microwave transmission structure that above-mentioned four transmission lines adopt comprises microstrip line, strip line, coaxial line and the line of rabbet joint.
Preferably, (the Y of described first short-circuited transmission line
1, θ
1), (Y of the first open circuited transmission line
2, θ
2), (Y of the second short-circuited transmission line
3, θ
3) and (Y of the second open circuited transmission line
4, θ
4) by equation group
-jY
1cot(r
3θ
1)+jY
2tan(r
3θ
2)＝0
-jY
1cot(r
4θ
1)+jY
2tan(r
4θ
2)＝0
-jY
3cot(θ
3)+jY
4tan(θ
4)＝0
-jY
3cot(r
2θ
3)+jY
4tan(r
2θ
4)＝0
Determine, f in equation group
1, f
2, f
3, f
4represent the passband central frequency of first passage filter, second channel filter, third channel filter, four-way filter respectively, make r
2=f
2/ f
1, r
3=f
3/ f
1, r
4=f
4/ f
1, above-mentioned Y
1, θ
1be respectively Characteristic mobility and the electrical length of the first short-circuited transmission line, Y
2, θ
2be respectively Characteristic mobility and the electrical length of the first open circuited transmission line, Y
3, θ
3be respectively Characteristic mobility and the electrical length of the second short-circuited transmission line, Y
4, θ
4be respectively Characteristic mobility and the electrical length of transmission line 4.
Preferably, the same face of the micro-band plate of described double-sided copper-clad is also manufactured with the first ground short circuit via hole, the second ground short circuit via hole, the 3rd ground short circuit via hole, the 4th ground short circuit via hole, wherein the first ground short circuit via hole is connected with the first output feeder top, second ground short circuit via hole is connected with the first short-circuited transmission line top, 3rd ground short circuit via hole is connected with the second short-circuited transmission line top, and the 4th ground short circuit via hole is connected with the 3rd output feeder top.
The utility model has following advantage and effect relative to prior art:
The two-frequency duplex device of the matching network that the racemosus nodel line that 1, the utility model uses loads, can when arbitrary group of resonator works, and another group resonator is all in open-circuit condition, improves the inhibition between passage.
2, the matching network volume that the utility model proposes is little, and use the size of the duplexer of this matching network almost only to depend on filter size, matching network increase only a small amount of volume.
3. the matching network design process that the utility model proposes is simple, and design and filter construction have nothing to do, and all can design according to the Theoretical Design formula proposed, therefore this matching network is applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high isolation microstrip duplexer of a kind of branched structure in prior art;
Fig. 2 is the structural representation of a kind of micro-strip duplexer based on electromagnetism hybrid coupled in prior art;
Fig. 3 is the structural representation of the duplexer of a kind of four passbands in prior art;
Fig. 4 is the structure chart of the racemosus nodel line loading matching network in the duplexer design that the utility model proposes;
Fig. 5 is the structural representation of a kind of two-frequency duplex device design that the utility model proposes;
Fig. 6 is the simulation result schematic diagram of a kind of two-frequency duplex device design that the utility model proposes;
In figure, Reference numeral is: 1-first short-circuited transmission line, 2-first open circuited transmission line, 3-second short-circuited transmission line, 4-second open circuited transmission line, 5-first passage filter, the micro-band of 5-1-first, the micro-band of 5-2-second, the micro-band of 5-3-the 3rd, the micro-band of 5-4-the 4th, the micro-band of 5-5-the 5th, the micro-band of 5-6-the 6th, the micro-band of 5-7-the 7th, the micro-band of 5-8-the 8th, 6-second channel filter, the micro-band of 6-1-the 17, the micro-band of 6-2-the 18, the micro-band of 6-3-the 19, the micro-band of 6-4-the 20, the micro-band of 6-5-the 21, the micro-band of 6-6-the 22, 7-third channel filter, the micro-band of 7-1-the 9th, the micro-band of 7-2-the tenth, the micro-band of 7-3-the 11, the micro-band of 7-4-the 12, the micro-band of 7-5-the 13, the micro-band of 7-6-the 14, the micro-band of 7-7-the 15, the micro-band of 7-8-the 16, 8-four-way filter, the micro-band of 8-1-the 23, the micro-band of 8-2-the 24, the micro-band of 8-3-the 25, the micro-band of 8-4-the 26, the micro-band of 8-5-the 27, the micro-band of 8-6-the 28, 9-first output feeder, 10-second output feeder, 11-the 3rd output feeder, 12-the 4th output feeder, 13-first ground short circuit via hole, 14-second ground short circuit via hole, 15-the 3rd ground short circuit via hole, 16-the 4th ground short circuit via hole, 17-the 5th ground short circuit via hole, 18-the 6th ground short circuit via hole, 19-signal incoming feeder port port1, 20-signal output feeder port port2, 21-signal output feeder port port3.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
A kind of structure chart using racemosus nodel line to load the two-frequency duplex device of matching network that the utility model proposes as shown in Figure 5, be produced on the micro-band plate of two-sided shoe copper in the manner of a printed circuit board, the same face of the micro-band plate of described double-sided copper-clad is manufactured with respectively signal incoming feeder port port1, signal output feeder port port2, signal output feeder port port3 (mark 19 in corresponding diagram respectively, 20, 21), first passage filter 5, second channel filter 6, third channel filter 7, four-way filter 8, first short-circuited transmission line 1, second short-circuited transmission line 3, first open circuited transmission line 2, second open circuited transmission line 4, first output feeder 9, second output feeder 10, 3rd output feeder 11, 4th output feeder 12, the another side of the micro-band plate of this double-sided copper-clad is for covering copper ground plate.
The bottom of the first output feeder 9 is connected in reverse L-type with the bottom of signal output feeder port port2 is vertical, second output feeder 10 is connected with the lower horizontal of signal output feeder port port2, be connected with the bottom of the first output feeder 9 is vertical, and the first output feeder 9 and the second output feeder 10 form an output feeder network simultaneously;
The bottom of the 3rd output feeder 11 is connected in L-type with the bottom of signal output feeder port port3 is vertical, 4th output feeder 12 is connected with the lower horizontal of signal output feeder port port3, be connected with the bottom of the 3rd output feeder 11 is vertical, and the 3rd output feeder 11 and the 4th output feeder 12 form an output feeder network simultaneously;
First short-circuited transmission line 1 and the second short-circuited transmission line 3 bottom connect and compose U-shaped, between the first output feeder 9 and the 3rd output feeder 11, be connected with feeder line port port1 is vertical in the middle of the lower end of this U-shaped, first open circuited transmission line 2 is connected in reverse L-type with the first short-circuited transmission line 1 is vertical, second open circuited transmission line 4 is connected in L-type with the second short-circuited transmission line 3 is vertical, and the second output feeder 10, first open circuited transmission line 2, second open circuited transmission line 4, 4th output feeder 12 simultaneously horizontally set and be positioned on same level line, one end of second output feeder 10 and the first open circuited transmission line 2 is adjacent exists coupling gap, one end of second open circuited transmission line 4 and the 4th output feeder 12 is adjacent exists coupling gap,
Described first passage filter 5, second channel filter 6 are between the first output feeder 9 and the first short-circuited transmission line 1, wherein first passage filter 5 is positioned at directly over the second output feeder 10 and the first open circuited transmission line 2, and second channel filter 6 is positioned at immediately below the second output feeder 10 and the first open circuited transmission line 2; Described third channel filter 7, four-way filter 8 are between the 3rd output feeder 11 and the second short-circuited transmission line 3, wherein third channel filter 7 is positioned at directly over the second open circuited transmission line 4 and the 4th output feeder 12, and four-way filter 8 is positioned at immediately below the second open circuited transmission line 4 and the 4th output feeder 12.
The same face of the micro-band plate of described double-sided copper-clad is also manufactured with the 5th ground short circuit via hole (17) and the 6th ground short circuit via hole 18;
Described first passage filter 5 is by first micro-band 5-1, second micro-band 5-2, 3rd micro-band 5-3, 4th micro-band 5-4, 5th micro-band 5-5, 6th micro-band 5-6, 7th micro-band 5-7, 8th micro-band 5-8 forms, wherein first micro-band, 3rd micro-band, 6th micro-band, 8th micro-band is transverse horizontal, is parallel to the second output feeder 10 and the micro-band of the first open circuited transmission line 2, second, 4th micro-band, 5th micro-band, 7th micro-band is longitudinal, is parallel to the first output feeder 9 and the first short-circuited transmission line 1, two ends and second longitudinal micro-band of the 3rd horizontal micro-band, the top of the 4th micro-band connects and composes inverted u-shaped, two ends and the 5th longitudinal micro-band of the 6th horizontal micro-band, the top of the 7th micro-band connects and composes inverted u-shaped, coupling gap is there is between 4th micro-band and the 5th micro-band, and the 4th micro-band is connected by the 5th ground short circuit via hole with the bottom of the 5th micro-band, wherein directly over the coupling gap of the 5th ground short circuit via hole between the second output feeder 10 and the first open circuited transmission line 2, first micro-band is vertical with the bottom of second micro-band connects and composes reverse L-type, and the 8th micro-band is vertical with the bottom of the 7th micro-band connects and composes L-type,
Described third channel filter 7 is by the 9th micro-band 7-1, tenth micro-band 7-2, 11 micro-band 7-3, 12 micro-band 7-4, 13 micro-band 7-5, 14 micro-band 7-6, 15 micro-band 7-7, 16 micro-band 7-8 forms, wherein the 9th micro-band, 11 micro-band, 14 micro-band, 16 micro-band is transverse horizontal, is parallel to the second open circuited transmission line 4 and the micro-band of the 4th output feeder the 12, ten, 12 micro-band, 13 micro-band, 15 micro-band is longitudinal, is parallel to the 3rd output feeder 11 and the second short-circuited transmission line 3, two ends and the tenth longitudinal micro-band of the 11 horizontal micro-band, the top of the 12 micro-band connects and composes inverted u-shaped, two ends and the 13 longitudinal micro-band of the 14 horizontal micro-band, the top of the 15 micro-band connects and composes inverted u-shaped, coupling gap is there is between 12 micro-band and the 13 micro-band, and the 12 micro-band is connected by the 6th ground short circuit via hole with the bottom of the 13 micro-band, wherein directly over the coupling gap of the 6th ground short circuit via hole between the second open circuited transmission line 4 and the 4th output feeder 12,9th micro-band is vertical with the bottom of the tenth micro-band connects and composes reverse L-type, and the 16 micro-band is vertical with the bottom of the 15 micro-band connects and composes L-type.
Described second channel filter 6 is by the 17 micro-band 6-1, 18 micro-band 6-2, 19 micro-band 6-3, 20 micro-band 6-4, 21 micro-band 6-5, 22 micro-band 6-6 forms, wherein the 17 micro-band, 19 micro-band, 20 micro-band, 22 micro-band is transverse horizontal, be parallel to the second open circuited transmission line 4 and the 4th output feeder 12, 24 micro-band, 27 micro-band is longitudinal, be parallel to the first output feeder 9 and the first short-circuited transmission line 1, two ends and 17 horizontal micro-bands of the 18 longitudinal micro-band, the bottom of the 19 micro-band connects and composes the U-shaped of overturning shape left, two ends and 20 horizontal micro-bands of the 21 longitudinal micro-band, the bottom of the 22 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is between 18 micro-band and the 21 micro-band, immediately below coupling gap between the second output feeder 10 and the first open circuited transmission line 2.
Described four-way filter 8 is by the 23 micro-band 8-1, 24 micro-band 8-2, 25 micro-band 8-3, 26 micro-band 8-4, 27 micro-band 8-5, 28 micro-band 8-6 forms, wherein the 23 micro-band, 25 micro-band, 26 micro-band, 28 micro-band is transverse horizontal, is parallel to the second output feeder 10 and the micro-band of the first open circuited transmission line the 2, the 18, 21 micro-band is longitudinal, is parallel to the 3rd output feeder 11 and the second short-circuited transmission line 3, two ends and 23 horizontal micro-bands of the 24 longitudinal micro-band, the bottom of the 25 micro-band connects and composes the U-shaped of overturning shape left, two ends and 26 horizontal micro-bands of the 27 longitudinal micro-band, the bottom of the 28 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is, immediately below the coupling gap between the second open circuited transmission line 4 and the 4th output feeder 12 between 24 micro-band and the 27 micro-band.
The same face of the micro-band plate of described double-sided copper-clad is also manufactured with the first ground short circuit via hole 13, second ground short circuit via hole 14, the 3rd ground short circuit via hole 15, the 4th ground short circuit via hole 16, wherein the first ground short circuit via hole is connected with the first output feeder top, second ground short circuit via hole is connected with the first short-circuited transmission line top, 3rd ground short circuit via hole is connected with the second short-circuited transmission line top, and the 4th ground short circuit via hole is connected with the 3rd output feeder top.
Described first short-circuited transmission line 1, second short-circuited transmission line 3, first open circuited transmission line 2 and the second open circuited transmission line 4 jointly form racemosus nodel line and load matching network, and the microwave transmission structure that above-mentioned four transmission lines adopt comprises microstrip line, strip line, coaxial line and the line of rabbet joint.Racemosus nodel line in the duplexer design that the utility model proposes loads the structure chart of matching network as shown in Figure 4.
The method for designing of this matching network is specific as follows:
Make f
1, f
2, f
3, f
4represent the passband central frequency of first passage filter, second channel filter, third channel filter, four-way filter respectively, make r
2=f
2/ f
1, r
3=f
3/ f
1, r
4=f
4/ f
1, (the Y of described first short-circuited transmission line
1, θ
1), (Y of the first open circuited transmission line
2, θ
2), (Y of the second short-circuited transmission line
3, θ
3) and (Y of the second open circuited transmission line
4, θ
4) by equation group
-jY
1cot(r
3θ
1)+jY
2tan(r
3θ
2)＝0 (1)
-jY
1cot(r
4θ
1)+jY
2tan(r
4θ
2)＝0 (2)
-jY
3cot(θ
3)+jY
4tan(θ
4)＝0 (3)
-jY
3cot(r
2θ
3)+jY
4tan(r
2θ
4)＝0 (4)
Determine, f in equation group
1, f
2, f
3, f
4represent the passband central frequency of first passage filter, second channel filter, third channel filter, four-way filter respectively, make r
2=f
2/ f
1, r
3=f
3/ f
1, r
4=f
4/ f
1, above-mentioned Y
1, θ
1be respectively Characteristic mobility and the electrical length of the first short-circuited transmission line, Y
2, θ
2be respectively Characteristic mobility and the electrical length of the first open circuited transmission line, Y
3, θ
3be respectively Characteristic mobility and the electrical length of the second short-circuited transmission line, Y
4, θ
4be respectively Characteristic mobility and the electrical length of transmission line 4.
In this two-frequency duplex device, when channel bandpass filter 5 or channel bandpass filter 6 work, the network of the second short-circuited transmission line 3 and the second open circuited transmission line 4 composition is all in open-circuit condition, and therefore channel bandpass filter 7 and channel bandpass filter 8 do not work; Same, when channel bandpass filter 7 or channel bandpass filter 8 work, the network of the first short-circuited transmission line 1 and the first open circuited transmission line 2 composition is all in open-circuit condition, and therefore channel bandpass filter 3 and channel bandpass filter 4 do not work.So compared to conventional T connector matching network or other prior aries, the racemosus nodel line be made up of transmission line 1,2,3,4 loads the insulated degree requirement that matching network can meet four-way duplexer better.
The operating frequency of this two-frequency duplex device is designed to 1.8GHz, 2.2GHz, 3.5GHz, 4.0GHz, and the design parameter that can obtain racemosus nodel line loading matching network according to formula (1)-(4) is Z
1=1/Y
1=32 Ω, Z
2=1/Y
2=131 Ω, θ
1=θ
2=52 °, Z
3=1/Y
3=40 Ω, Z
4=1/Y
4=131 Ω, θ
3=θ
4=61 °, wherein Z
1, θ
1be respectively impedance and the electrical length of transmission line 1, Z
2, θ
2be respectively impedance and the electrical length of transmission line 2, Z
3, θ
3be respectively impedance and the electrical length of transmission line 3, Z
4, θ
4be respectively impedance and the electrical length of transmission line 4, θ
1, θ
2, θ
3, θ
4all be defined in 1.8GHz.
As shown in Figure 6, transverse axis represents the signal frequency of this two-frequency duplex device to the emulated data of this two-frequency duplex device, and the longitudinal axis represents amplitude, comprises insertion loss (S
21and S
31) amplitude, return loss (S
11) amplitude, isolation (S
32) amplitude, wherein S
21represent the insertion loss of port1 to port2, S
31represent the insertion loss of port1 to port3, S
11represent the return loss of port1, S
32represent the isolation between port2 and port3, its corresponding mathematical function is as follows: power output/input power=20*log|S
21| (or 20*log|S
31|), reflection power/incident power=20*log|S
11|, power output/input power=20*log|S
32|.
As can be drawn from Figure 6, in four passbands, return loss | S
11| and S
33absolute value be greater than 17DB, insertion loss S
13absolute value be less than 2DB.From the frequency range of 0-3.5Ghz, the isolation S of duplexer
23absolute value be greater than 50DB.From the frequency range of 1-5Ghz, the isolation S of duplexer
23absolute value be greater than 30DB.Meet the insulated degree requirement of two passages, four-way duplexer.In addition, each passband both sides of this duplexer can produce several transmission zero, substantially increase Out-of-band rejection.
The utility model comprises and is not limited in the above-mentioned embodiment provided; those skilled in the art are under design of the present utility model; under the prerequisite not departing from the utility model principle; different distortion and replacement can be made; such as change transmission line into other resistance values or length value; four minor matters lines of signal are loaded the matching network that matching network changes more racemosus nodel line loading into; use other transmission line type (as strip line, coaxial line) to realize the structure etc. that the utility model proposes, these distortion and replacement also belong to this patent protection range.
Claims (6)
1. the two-frequency duplex device using racemosus nodel line to load matching network, be produced on the micro-band plate of two-sided shoe copper in the manner of a printed circuit board, it is characterized in that: the same face of the micro-band plate of described double-sided copper-clad is manufactured with respectively signal incoming feeder port port1 (19), signal output feeder port port2 (20), signal output feeder port port3 (21), first passage filter (5), second channel filter (6), third channel filter (7), four-way filter (8), first short-circuited transmission line (1), second short-circuited transmission line (3), first open circuited transmission line (2), second open circuited transmission line (4), first output feeder (9), second output feeder (10), 3rd output feeder (11), 4th output feeder (12), the another side of the micro-band plate of this double-sided copper-clad is for covering copper ground plate, the bottom of the first output feeder (9) is connected in reverse L-type with the bottom of signal output feeder port port2 (20) is vertical, second output feeder (10) is connected with the lower horizontal of signal output feeder port port2 (20), be connected with the bottom of the first output feeder (9) is vertical, and the first output feeder (9) and the second output feeder (10) form an output feeder network simultaneously, the bottom of the 3rd output feeder (11) is connected in L-type with the bottom of signal output feeder port port3 (21) is vertical, 4th output feeder (12) is connected with the lower horizontal of signal output feeder port port3 (21), be connected with the bottom of the 3rd output feeder (11) is vertical, and the 3rd output feeder (11) and the 4th output feeder (12) form an output feeder network simultaneously, first short-circuited transmission line (1) and the second short-circuited transmission line (3) bottom connect and compose U-shaped, be positioned between the first output feeder (9) and the 3rd output feeder (11), be connected with feeder line port port1 is vertical in the middle of the lower end of this U-shaped, first open circuited transmission line (2) is connected in reverse L-type with the first short-circuited transmission line (1) is vertical, second open circuited transmission line (4) is connected in L-type with the second short-circuited transmission line (3) is vertical, and the second output feeder (10), first open circuited transmission line (2), second open circuited transmission line (4), 4th output feeder (12) simultaneously horizontally set and be positioned on same level line, second output feeder (10) is adjacent with one end of the first open circuited transmission line (2) exists coupling gap, second open circuited transmission line (4) is adjacent with one end of the 4th output feeder (12) exists coupling gap, described first passage filter (5), second channel filter (6) are positioned between the first output feeder (9) and the first short-circuited transmission line (1), wherein first passage filter (5) is positioned at directly over the second output feeder (10) and the first open circuited transmission line (2), and second channel filter (6) is positioned at immediately below the second output feeder (10) and the first open circuited transmission line (2), described third channel filter (7), four-way filter (8) are positioned between the 3rd output feeder (11) and the second short-circuited transmission line (3), wherein third channel filter (7) is positioned at directly over the second open circuited transmission line (4) and the 4th output feeder (12), and four-way filter (8) is positioned at immediately below the second open circuited transmission line (4) and the 4th output feeder (12).
2. a kind of two-frequency duplex device using racemosus nodel line to load matching network according to claim 1, is characterized in that: the same face of the micro-band plate of described double-sided copper-clad is also manufactured with the 5th ground short circuit via hole (17) and the 6th ground short circuit via hole (18);
Described first passage filter (5) is by first micro-band (5-1), second micro-band (5-2), 3rd micro-band (5-3), 4th micro-band (5-4), 5th micro-band (5-5), 6th micro-band (5-6), 7th micro-band (5-7), 8th micro-band (5-8) composition, wherein first micro-band, 3rd micro-band, 6th micro-band, 8th micro-band is transverse horizontal, is parallel to the second output feeder (10) and the first open circuited transmission line (2), second micro-band, 4th micro-band, 5th micro-band, 7th micro-band is longitudinal, is parallel to the first output feeder (9) and the first short-circuited transmission line (1), two ends and second longitudinal micro-band of the 3rd horizontal micro-band, the top of the 4th micro-band connects and composes inverted u-shaped, two ends and the 5th longitudinal micro-band of the 6th horizontal micro-band, the top of the 7th micro-band connects and composes inverted u-shaped, coupling gap is there is between 4th micro-band and the 5th micro-band, and the 4th micro-band is connected by the 5th ground short circuit via hole with the bottom of the 5th micro-band, wherein the 5th ground short circuit via hole is positioned at directly over the coupling gap between the second output feeder (10) and the first open circuited transmission line (2), first micro-band is vertical with the bottom of second micro-band connects and composes reverse L-type, and the 8th micro-band is vertical with the bottom of the 7th micro-band connects and composes L-type,
Described third channel filter (7) is by the 9th micro-band (7-1), tenth micro-band (7-2), 11 micro-band (7-3), 12 micro-band (7-4), 13 micro-band (7-5), 14 micro-band (7-6), 15 micro-band (7-7), 16 micro-band (7-8) composition, wherein the 9th micro-band, 11 micro-band, 14 micro-band, 16 micro-band is transverse horizontal, is parallel to the second open circuited transmission line (4) and the 4th output feeder (12), the tenth micro-band, 12 micro-band, 13 micro-band, 15 micro-band is longitudinal, is parallel to the 3rd output feeder (11) and the second short-circuited transmission line (3), two ends and the tenth longitudinal micro-band of the 11 horizontal micro-band, the top of the 12 micro-band connects and composes inverted u-shaped, two ends and the 13 longitudinal micro-band of the 14 horizontal micro-band, the top of the 15 micro-band connects and composes inverted u-shaped, coupling gap is there is between 12 micro-band and the 13 micro-band, and the 12 micro-band is connected by the 6th ground short circuit via hole with the bottom of the 13 micro-band, wherein the 6th ground short circuit via hole is positioned at directly over the coupling gap between the second open circuited transmission line (4) and the 4th output feeder (12), 9th micro-band is vertical with the bottom of the tenth micro-band connects and composes reverse L-type, and the 16 micro-band is vertical with the bottom of the 15 micro-band connects and composes L-type.
3. a kind of two-frequency duplex device using racemosus nodel line to load matching network according to claim 1, it is characterized in that: described second channel filter (6) is by the 17 micro-band (6-1), 18 micro-band (6-2), 19 micro-band (6-3), 20 micro-band (6-4), 21 micro-band (6-5), 22 micro-band (6-6) composition, wherein the 17 micro-band, 19 micro-band, 20 micro-band, 22 micro-band is transverse horizontal, be parallel to the second open circuited transmission line (4) and the 4th output feeder (12), 24 micro-band, 27 micro-band is longitudinal, be parallel to the first output feeder (9) and the first short-circuited transmission line (1), two ends and 17 horizontal micro-bands of the 18 longitudinal micro-band, the bottom of the 19 micro-band connects and composes the U-shaped of overturning shape left, two ends and 20 horizontal micro-bands of the 21 longitudinal micro-band, the bottom of the 22 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is between 18 micro-band and the 21 micro-band, be positioned at immediately below the coupling gap between the second output feeder (10) and the first open circuited transmission line (2),
Described four-way filter (8) is by the 23 micro-band (8-1), 24 micro-band (8-2), 25 micro-band (8-3), 26 micro-band (8-4), 27 micro-band (8-5), 28 micro-band (8-6) composition, wherein the 23 micro-band, 25 micro-band, 26 micro-band, 28 micro-band is transverse horizontal, be parallel to the second output feeder (10) and the first open circuited transmission line (2), 18 micro-band, 21 micro-band is longitudinal, be parallel to the 3rd output feeder (11) and the second short-circuited transmission line (3), two ends and 23 horizontal micro-bands of the 24 longitudinal micro-band, the bottom of the 25 micro-band connects and composes the U-shaped of overturning shape left, two ends and 26 horizontal micro-bands of the 27 longitudinal micro-band, the bottom of the 28 micro-band connects and composes the U-shaped of overturning shape to the right, above-mentioned two U-shaped are back to setting, coupling gap is there is between 24 micro-band and the 27 micro-band, be positioned at the coupling gap between the second open circuited transmission line (4) and the 4th output feeder (12) immediately below.
4. a kind of two-frequency duplex device using racemosus nodel line to load matching network according to claim 1, it is characterized in that: described first short-circuited transmission line (1), the second short-circuited transmission line (3), the first open circuited transmission line (2) and the second open circuited transmission line (4) jointly form racemosus nodel line and load matching network, and the microwave transmission structure that above-mentioned four transmission lines adopt comprises microstrip line, strip line, coaxial line and the line of rabbet joint.
5. a kind of two-frequency duplex device using racemosus nodel line to load matching network according to claim 1, is characterized in that: (the Y of described first short-circuited transmission line
1, θ
1), (Y of the first open circuited transmission line
2, θ
2), (Y of the second short-circuited transmission line
3, θ
3) and (Y of the second open circuited transmission line
4, θ
4) by equation group
-jY
1cot(r
3θ
1)+jY
2tan(r
3θ
2)＝0
-jY
1cot(r
4θ
1)+jY
2tan(r
4θ
2)＝0
-jY
3cot(θ
3)+jY
4tan(θ
4)＝0
-jY
3cot(r
2θ
3)+jY
4tan(r
2θ
4)＝0
Determine, f in equation group
1, f
2, f
3, f
4represent the passband central frequency of first passage filter, second channel filter, third channel filter, four-way filter respectively, make r
2=f
2/ f
1, r
3=f
3/ f
1, r
4=f
4/ f
1, above-mentioned Y
1, θ
1be respectively Characteristic mobility and the electrical length of the first short-circuited transmission line, Y
2, θ
2be respectively Characteristic mobility and the electrical length of the first open circuited transmission line, Y
3, θ
3be respectively Characteristic mobility and the electrical length of the second short-circuited transmission line, Y
4, θ
4be respectively Characteristic mobility and the electrical length of transmission line 4.
6. according to the arbitrary described a kind of two-frequency duplex device using racemosus nodel line to load matching network of claims 1 to 3, it is characterized in that: the same face of the micro-band plate of described double-sided copper-clad is also manufactured with the first ground short circuit via hole (13), second ground short circuit via hole (14), 3rd ground short circuit via hole (15), 4th ground short circuit via hole (16), wherein the first ground short circuit via hole is connected with the first output feeder top, second ground short circuit via hole is connected with the first short-circuited transmission line top, 3rd ground short circuit via hole is connected with the second short-circuited transmission line top, 4th ground short circuit via hole is connected with the 3rd output feeder top.
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| CN201420404201.3U CN204067530U (en) | 2014-07-21 | 2014-07-21 | A kind of two-frequency duplex device using racemosus nodel line to load matching network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404201.3U CN204067530U (en) | 2014-07-21 | 2014-07-21 | A kind of two-frequency duplex device using racemosus nodel line to load matching network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143672A (en) * | 2014-07-21 | 2014-11-12 | 华南理工大学 | Dual-frequency duplexer provided with branchy pitch line loading matching network |
| CN104821420A (en) * | 2015-04-24 | 2015-08-05 | 华南理工大学 | Reconfigurable dual-band band-stop filter |
| CN105048029A (en) * | 2015-08-27 | 2015-11-11 | 华南理工大学 | Miniaturized duplexer with wide stop band and high isolation characteristic |
| CN106099266A (en) * | 2016-06-01 | 2016-11-09 | 南京理工大学 | SHF wave band miniature duplexer based on LTCC |
-
2014
- 2014-07-21 CN CN201420404201.3U patent/CN204067530U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143672A (en) * | 2014-07-21 | 2014-11-12 | 华南理工大学 | Dual-frequency duplexer provided with branchy pitch line loading matching network |
| CN104821420A (en) * | 2015-04-24 | 2015-08-05 | 华南理工大学 | Reconfigurable dual-band band-stop filter |
| CN104821420B (en) * | 2015-04-24 | 2017-10-20 | 华南理工大学 | A kind of restructural two-band bandstop filter |
| CN105048029A (en) * | 2015-08-27 | 2015-11-11 | 华南理工大学 | Miniaturized duplexer with wide stop band and high isolation characteristic |
| CN105048029B (en) * | 2015-08-27 | 2019-05-14 | 华南理工大学 | A kind of miniaturized duplexer with Wide stop bands high isolation characteristic |
| CN106099266A (en) * | 2016-06-01 | 2016-11-09 | 南京理工大学 | SHF wave band miniature duplexer based on LTCC |
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