CN103367851A - Splitter - Google Patents
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- CN103367851A CN103367851A CN2012100851692A CN201210085169A CN103367851A CN 103367851 A CN103367851 A CN 103367851A CN 2012100851692 A CN2012100851692 A CN 2012100851692A CN 201210085169 A CN201210085169 A CN 201210085169A CN 103367851 A CN103367851 A CN 103367851A
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Abstract
A splitter is disclosed, comprising an input end, a first output end, a second output end, a first transmission element which comprises a first micro-strip line and is connected between the input end and a first node in a coupled manner, a second micro-strip line which is connected between the input end and a second node in a coupled manner, a first resistor which is connected between the first node and the second node in a coupled manner, a second transmission element which comprises a third micro-strip line and is connected between the first node and the first output end in a coupled manner, a forth micro-strip line which is connected between the second node and the second output end in a coupled manner, and a second resistor which is connected between the first output end and the second output end. The length of the first micro-strip line and the second micro-strip line is relevant to a first frequency, and the length of the third micro-strip line and the third micro-strip line is relevant to a second frequency.
Description
Technical field
The present invention relates to a kind of minute multiplexer, relate in particular to a kind of making between output in the interval mutual conduction of some frequency range, and other frequency ranges are kept minute multiplexer of not conducting cut-off state.
Background technology
Dividing multiplexer (Splitter also claims splitter) is a kind of signal transmitting apparatus that is common in the electronic equipment, is used for the single signal source is branched to a plurality of outputs by an input.In this case, the prime design requirement that divides multiplexer is that input arrives each output for hanging down insertion loss (Insertion Loss), and be high insertion loss between output and the output, represent input and each output conducting, between output then isolation (Isolation) be the bigger the better, so can avoid between output the interfering with each other or load variations of signal to affect transmission characteristic.
Yet some application may need the output of minute multiplexer less at the isolation in a certain frequency range interval, and the isolation of other frequency ranges is larger; In other words, in the use frequency range of minute multiplexer, can be in the interval mutual conduction of a certain frequency range between output, other frequency ranges are then kept the cut-off state of not conducting.Non-traditional minute multiplexer of such design requirement can be reached, and therefore needs redesign to meet minute multiplexer of this demand.
Summary of the invention
Therefore, the present invention mainly provides a kind of minute multiplexer, and it makes between output in the interval mutual conduction of some frequency range, and other frequency ranges are kept the cut-off state of not conducting.
The present invention discloses a kind of minute multiplexer, includes an input; One first output; One second output; One first transfer element includes one first microstrip line, is coupled between this input and the first node; One second microstrip line is coupled between this input and the Section Point; And one first resistance, be coupled between this first node and this Section Point; And one second transfer element, include one the 3rd microstrip line, be coupled between this first node and this first output; One the 4th microstrip line is coupled between this Section Point and this second output; And one second resistance, be coupled between this first output and this second output.Wherein, the length of this first microstrip line and this second microstrip line all is roughly one first length, the length of the 3rd microstrip line and the 4th microstrip line all is roughly one second length, this first length is relevant to a first frequency, this second length is relevant to a second frequency, and this first frequency and this second frequency are different.
The present invention also discloses a kind of minute multiplexer, includes an input; A plurality of outputs; And a plurality of transfer elements, being serially connected with a sequence, each transfer element includes a resistance nodes; A plurality of prime nodes; A plurality of rear class nodes; A plurality of microstrip lines are coupled between these a plurality of prime nodes and this a plurality of rear class nodes; And a plurality of resistance, each resistance is coupled between a rear class node and this resistance nodes.Wherein, these a plurality of prime nodes of the most last transfer element of these a plurality of transfer elements are coupled to this input, the a plurality of rear class nodes of this of last transfer element are coupled to this a plurality of outputs, these a plurality of prime nodes of this rear one-level transfer element of a plurality of rear class node systems of previous stage transfer element in adjacent two transfer elements; The a plurality of microstrip lines of this of each transfer element are roughly isometric, and be relevant to a frequency, these a plurality of transfer elements about a plurality of frequencies, make the length of these a plurality of microstrip lines that these a plurality of transfer elements can comprise according to each transfer element be divided into a plurality of transfer element modules according to microstrip line length common phase.
Description of drawings
Fig. 1 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Fig. 2 is the detailed construction schematic diagram of transfer element among Fig. 1.
Fig. 3 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Fig. 4 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Fig. 5 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Fig. 6 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Fig. 7 is the output isolation schematic diagram of minute multiplexer of Fig. 3.
Fig. 8 is the output isolation schematic diagram of minute multiplexer of Fig. 4.
Fig. 9 is the output isolation schematic diagram of minute multiplexer of Fig. 5 or Fig. 6.
Figure 10 is the schematic diagram of one minute multiplexer of the embodiment of the invention.
Figure 11 is the output isolation schematic diagram of minute multiplexer of Figure 10.
[main element symbol description]
10,30,40,50,60,100 minutes multiplexers
The T_IN input
OP_T1～OP_Tn output
TM_1～TM_x transfer element module
TU_1_1～TU_x_ax transfer element
MND_11, MND_12 resistance nodes
FND_11-_1～FND_11-_n, prime node
FND_12-_1～FND_12-_n
RND_11-_1～RND_11-_n, rear class node
RND_12_1～RND_12-_n
MSP_11_1～MSP_11_n, MSP_12_1～microstrip line
MSP_12_n
R_11_1～R_11_n, R_12_1～R_12_n resistance
Embodiment
For can be in the interval mutual conduction of some frequency ranges between the output that makes minute multiplexer, and other frequency ranges be kept the cut-off state of not conducting, and the present invention is the transfer element that utilizes different microstrip line length, reaches above-mentioned purpose.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of one minute multiplexer 10 of the embodiment of the invention.Divide multiplexer 10 to be used for the single signal source is branched to output OP_T1～OP_Tn by an input T_IN, it mainly is comprised of transfer element module TM_1～TM_x, and transfer element module TM_1～TM_x then includes respectively transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax.The structure of transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax is roughly the same, and Main Differences is the microstrip line length that comprises.
Specifically, please continue with reference to figure 2, Fig. 2 is the detailed construction schematic diagram of transfer element TU_1_1, TU-_1_2.Transfer element TU_1_1 includes a resistance nodes MND_11, prime node FND_11-_1～FND_11-_n, rear class node RN D_11-_1～RND_11-_n, microstrip line MSP_11_1～MSP_11_n, resistance R _ 11_1～R_11_n.Similarly, transfer element TU_1_2 includes a resistance nodes MND_12, prime node FND_12-_1～FND_12-_n, rear class node RN D_12_1～RND_12-_n, microstrip line MSP_12_1～MSP_12_n, resistance R _ 12_1～R_12_n.The rest may be inferred, and those skilled in the art should understand, and each transfer element comprises a resistance nodes, a n prime node, a n rear class node, a n microstrip line and n resistance.In addition, prime node FND_11-_1～FND_11-_n of transfer element TU_1_1 all is coupled to input T_IN, and rear class node RN D_11-_1～RND_11-_n of transfer element TU_1_1 and prime node FND_12-_1～FND_12-_n of transfer element TU_1_2 couple mutually; The rest may be inferred, and as can be known, except transfer element TU_1_1, the prime node of each transfer element all is coupled to the rear class node of previous stage transfer element, and the rear class node of last transfer element TU_x_ax is coupled to output OP_T1～OP_Tn.
Should be noted, because the structure of transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax is roughly the same, therefore only show for the sake of clarity the structure and mutual connection relationship of transfer element TU_1_1, TU_1_2 in Fig. 2, those skilled in the art are when the mutual connection relationship that can hammer out according to this between other transfer elements.
After understanding the structure of minute multiplexer 10, its function mode is described then.As previously mentioned, the structure of transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax is roughly the same, and Main Differences is the microstrip line length that comprises.Specifically, the present invention is according to the microstrip line length of transfer element, and transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax is divided into x group, i.e. transfer element module TM_1～TM_x.For instance, the microstrip line length of each transfer element is all roughly the same among transfer element TU_1_1～TU_1_a1 that transfer element module TM_1 comprises, take Fig. 2 as example, represent that namely the length of microstrip line MSP_11_1～MSP_11_n and microstrip line MSP_12_1～MSP_12_n is all roughly the same.Yet, different transfer element intermodules, the microstrip line length of transfer element is different, for example the microstrip line length of transfer element TU_1_1 and transfer element TU_2_1 is different.And the microstrip line length of transfer element is relevant to the frequency range that makes generation cut-off effect between output OP_T1～OP_Tn, and it preferably is substantially equal to the quarter-wave of the corresponding radiofrequency signal of centre frequency of this frequency range.That is to say, if want to make between output OP_T1～OP_Tn and produce the cut-off effect in a frequency range, then should be according to the centre frequency of this frequency range, by selecting a transfer element module among transfer element module TM_1～TM_x, the microstrip line length of setting the transfer element that comprises is 1/4th of the inverse (being wavelength) of this centre frequency.The rest may be inferred, take Fig. 1 as example, all transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax comprise x kind microstrip line length altogether, this x kind microstrip line length can make cut-off state or the high-isolation (namely being similar to known technology) that produces not conducting between output OP_T1～OP_Tn in x frequency range, and the frequency range beyond x frequency range produces the conducting effect.
In simple terms, the present invention sets the microstrip line length of each transfer element according to the frequency range of wish generation output high-isolation effect, make output OP_T1～OP_Tn in the interval mutual conduction of some frequency range, and other frequency ranges is kept high-isolation.Should be noted that Fig. 1 and Fig. 2 are the result that derives of concept of the present invention, those skilled in the art be when can suitably setting each parameter according to the actual requirements, making mutual conduction between output in suitable frequency range, and keep high-isolation in other frequency ranges.Divide the definition of each parameter in the multiplexer 10 to be summarized as follows:
X: the quantity of expression transfer element module, also expression divides the different quantity (or kind) of microstrip line length in the multiplexer 10, maybe can represent to want to produce between output the band number of high-isolation effect.
N: represent the quantity of output, and be relevant to the quantity of prime node in each transfer element, rear class node, microstrip line and resistance.
A1, a2...ax: the quantity that represents respectively transfer element in each transfer element module.
Therefore, by suitable adjustment above-mentioned parameter, will for different demands, design suitable minute multiplexer.
In addition, should be noted that transfer element module TM_1～TM_x complies with the microstrip line length of the transfer element that comprises and decides, and is not limited to its arrangement mode.That is to say that in Fig. 1, the transfer element TU_1_1 that transfer element module TM_1～TM_x comprises～TU 1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax is though be arranged in a sequence in group's mode; Yet, this is for convenience of description event only, and in fact, the mode that transfer element TU_1_1～TU_1_a1, TU_2_1～TU_2_a2...TU_x_1～TU_x_ax also can intert alternately is serially connected with a sequence, the purpose of same attainable cost invention, related example is in rear detailed description.
Please refer to Fig. 3 to Fig. 5, Fig. 3 to Fig. 5 is that the embodiment of the invention is divided multiplexer 30,40,50 schematic diagram.Minute multiplexer 30,40,50 is derived by a minute multiplexer 10, thus similar elements represent with same-sign, and because a minute multiplexer 30,40,50 structures are comparatively simple, so the sign of omission transfer element module can be known with reference to above stated specification.Specifically, dividing multiplexer 30 is minute multiplexer 10 embodiment under x=2, n=2, a1=a2=1, dividing multiplexer 40 is minute multiplexer 10 embodiment under x=2, n=2, a1=2, a2=1, and a minute multiplexer 50 is minute multiplexer 10 embodiment under x=2, n=2, a1=a2=2.In other words, a minute multiplexer 30,40,50 all is to be applied to produce high output isolation two frequency ranges under two outputs, and produces the embodiment of output conducting effect in other frequency range.
In addition, as previously mentioned, the mode that the transfer element that each transfer element module comprises also can intert alternately is serially connected with a sequence, and therefore, as shown in Figure 6, it is the schematic diagram of one minute multiplexer 60 of the embodiment of the invention.Divide the framework of multiplexer 60 identical with minute multiplexer 50, so similar elements represents with same-sign.Divide multiplexer 60 and minute multiplexer 50 differences to be the transfer element TU_1_2 of minute multiplexer 60 and the place-exchange of transfer element TU_2_2; In other words, in minute multiplexer 60, though transfer element TU_1_1, TU_1_2 belong to same transfer element module TM_1, but arrange with transfer element TU_2_1, the TU_2_2 of another transfer element module TM_2 are interspersed, so also can make output OP_T1, OP_T2 keep the high-isolation state of not conducting in two frequency ranges (because of x=2), and in other frequency range mutual conduction.
Please continue with reference to figure 7 to Fig. 9, Fig. 7 is the output isolation schematic diagram of minute multiplexer 30, and Fig. 8 is the output isolation schematic diagram of minute multiplexer 40, and Fig. 9 is the output isolation schematic diagram of minute multiplexer 50 or minute multiplexer 60.By Fig. 7 to Fig. 9 as can be known, near minute output isolation of multiplexer 30,40,50,60 500MHz and 1500MHz is larger, and near the isolation 1000MHz is less.Therefore, minute multiplexer 30,40,50,60 output OP_T1, OP_T2 can keep high-isolation near 500MHz and 1500MHz, then produce the conducting effect in other frequency range.In other words, can link up by near the frequency range the 1000MHz between output OP_T1, OP_T2, simultaneously again can near the frequency range 500MHz and 1500MHz keep the high-isolation effect of not conducting.
On the other hand, as previously mentioned, parameter n is relevant to output quantity, and it should be looked demand and suitably adjust.For instance, please refer to Figure 10, Figure 10 is the schematic diagram that the embodiment of the invention is divided multiplexer 100.Minute multiplexer 100 is derived by a minute multiplexer 10, thus similar elements represent with same-sign, and because minute multiplexer 100 structures are comparatively simple, so the sign of omission transfer element module can be known with reference to above stated specification.Specifically, dividing multiplexer 100 is minute multiplexer 10 embodiment under x=2, n=4, a1=2, a2=1.In other words, a minute multiplexer 100 is to be applied to produce high output isolation two frequency ranges under four outputs, and produces the embodiment of output conducting effect in other frequency range.Please continue with reference to Figure 11, it is the output isolation schematic diagram of minute multiplexer 100.Hence one can see that, divide near the output isolation of multiplexer 100 500MHz and 1500MHz larger, and near the isolation 1000MHz is less, make between output OP_T1～OP_T4 and can link up by near the frequency range the 1000MHz, simultaneously again can near the frequency range 500MHz and 1500MHz keep the high-isolation effect of not conducting.
In known technology, the prime design requirement that divides multiplexer is that input arrives each output for hanging down insertion loss, and be high insertion loss between output and the output, the isolation that such design concept is not suitable for some frequency range interval is less, and the larger application of the isolation of other frequency ranges.In comparison, the present invention utilizes the transfer element of different microstrip line length, make between the output of minute multiplexer in the interval mutual conduction of some frequency range, and other frequency ranges is kept the cut-off state of not conducting, thereby has realized the function that tradition minute multiplexer lacks.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claims of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. one kind of minute multiplexer includes:
One input;
One first output;
One second output;
One first transfer element includes:
One first microstrip line is coupled between this input and the first node;
One second microstrip line is coupled between this input and the Section Point; And
One first resistance is coupled between this first node and this Section Point; And
One second transfer element includes:
One the 3rd microstrip line is coupled between this first node and this first output;
One the 4th microstrip line is coupled between this Section Point and this second output; And
One second resistance is coupled between this first output and this second output;
Wherein, the length of this first microstrip line and this second microstrip line all is roughly one first length, the length of the 3rd microstrip line and the 4th microstrip line all is roughly one second length, this first length is relevant to a first frequency, this second length is relevant to a second frequency, and this first frequency and this second frequency are different.
2. as claimed in claim 1 minute multiplexer, wherein this first length is substantially equal to the quarter-wave of corresponding one first radiofrequency signal of this first frequency, and this second length is substantially equal to the quarter-wave of corresponding one second radiofrequency signal of this second frequency.
3. as claimed in claim 1 minute multiplexer, wherein this first length and this second length roughly are multiple relation.
4. as claimed in claim 1 minute multiplexer, wherein in one first frequency range and one second frequency range, have high-isolation between this first output and this second output, and beyond this first frequency range and this second frequency range, this first output and this roughly conducting of the second output; Wherein, a centre frequency of this first frequency range is this first frequency, and a centre frequency of this second frequency range is this second frequency.
5. one kind of minute multiplexer includes:
One input;
A plurality of outputs; And
A plurality of transfer elements are serially connected with a sequence, and each transfer element includes:
One resistance nodes;
A plurality of prime nodes;
A plurality of rear class nodes;
A plurality of microstrip lines are coupled between these a plurality of prime nodes and this a plurality of rear class nodes; And
A plurality of resistance, each resistance are coupled between a rear class node and this resistance nodes;
Wherein, these a plurality of prime nodes of the most last transfer element of these a plurality of transfer elements are coupled to this input, the a plurality of rear class nodes of this of last transfer element are coupled to this a plurality of outputs, these a plurality of prime nodes of this rear one-level transfer element of a plurality of rear class node systems of previous stage transfer element in adjacent two transfer elements;
Wherein, the a plurality of microstrip lines of this of each transfer element are roughly isometric, and being relevant to a frequency, these a plurality of transfer elements about a plurality of frequencies, make the length of these a plurality of microstrip lines that these a plurality of transfer elements can comprise according to each transfer element be divided into a plurality of transfer element modules according to microstrip line length common phase.
6. as claimed in claim 5 minute multiplexer, wherein these a plurality of microstrip line length of each transfer element quarter-wave that is the corresponding radiofrequency signal of this frequency.
7. as claimed in claim 5 minute multiplexer wherein in a plurality of frequency ranges, has high-isolation between these a plurality of outputs, and beyond these a plurality of frequency ranges, this roughly conducting of a plurality of outputs; Wherein, a centre frequency of each frequency range of these a plurality of frequency ranges is a frequency of these a plurality of frequencies.
8. as claimed in claim 5 minute multiplexer, wherein the transfer element that comprises of these a plurality of transfer element modules is serially connected with this sequence with interactive mode.
9. as claimed in claim 5 minute multiplexer, wherein the transfer element that comprises of these a plurality of transfer element modules is serially connected with this sequence in group's mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210085169.2A CN103367851B (en) | 2012-03-28 | 2012-03-28 | Splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210085169.2A CN103367851B (en) | 2012-03-28 | 2012-03-28 | Splitter |
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| Publication Number | Publication Date |
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| CN103367851A true CN103367851A (en) | 2013-10-23 |
| CN103367851B CN103367851B (en) | 2017-09-26 |
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| CN201210085169.2A Active CN103367851B (en) | 2012-03-28 | 2012-03-28 | Splitter |
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| CN1938898A (en) * | 2004-03-22 | 2007-03-28 | 菲尔特朗尼克科姆特克有限公司 | Input arrangement for a low-noise amplifier pair |
| US20080018412A1 (en) * | 2006-07-18 | 2008-01-24 | Podell Allen F | Divider/combiner with coupled section |
| CN201174417Y (en) * | 2008-04-03 | 2008-12-31 | 南京理工大学 | Micro-strip double frequency band power distributor |
| CN201523061U (en) * | 2009-06-19 | 2010-07-07 | 南京理工大学 | Miniaturized UWB (ultra wide band) microstrip power divider |
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