CN107634294A - A kind of new wideband power distributor with filtering characteristic - Google Patents
A kind of new wideband power distributor with filtering characteristic Download PDFInfo
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- CN107634294A CN107634294A CN201710863481.2A CN201710863481A CN107634294A CN 107634294 A CN107634294 A CN 107634294A CN 201710863481 A CN201710863481 A CN 201710863481A CN 107634294 A CN107634294 A CN 107634294A
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- output port
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- power divider
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Abstract
A kind of new wideband power distributor with filtering characteristic, the power divider have symmetrical arrangement, including input port；First output port and the second output port, relative both sides are arranged symmetrically in, for phase and amplitude all identical signals after exporting after filtering；Separate but complete ground plane；One microstrip coupled cable architecture of three conductors；The microstrip line of the impedance step change of two symmetrically placed one end open circuits；Lumped parameter isolation resistance, both ends are individually positioned between two non-conterminous coupling lines of two three conductor coupling lines, for isolating the first output port and the second output port；Dielectric-slab, it is the substrate of printed circuit, for carrying whole circuit；The new wideband power distributor with filtering characteristic of the present invention can be by a device, while realizes power dividing function and signal filter function, and can realize scope with extremely wide bandwidth.
Description
Technical field
It is specifically two output ports etc. the present invention relates to a kind of new wideband power distributor with filtering characteristic
Power divider divide and that output signal is Jing Guo band-pass filter, belong to the technical field of microwave transmission device.
Background technology
Power divider is also referred to as power splitter, is that one kind will input signal energy be divided into two-way all the way or multiple-channel output is equal
Or the device of unequal energy.Because microstrip power divider has the spy that compact-sized, stable performance, cost are low and are easily achieved
Point, therefore it is widely used in the radio circuit of microwave front-end system.Its important technological parameters has：Power attenuation (including insert
Enter loss, distribution loss and reflection loss), the voltage standing wave ratio of each port, isolation and bandwidth between power distribution port
Degree etc..Bandpass filter is a kind of ripple for allowing special frequency channel by and meanwhile the ripple that shields other frequency ranges device.It is that microwave leads to
One of indispensable component in letter system.Its important technological parameters has：Pass band insertion loss, pass band width, selectivity and band
Outside inhibitory energy.
With the development of wireless communication technology, the device design of miniaturization becomes more and more important.In microwave component, with
Active device is compared, and the occupancy volume of passive device is larger and minimizes that difficulty is higher, therefore realizes the small-sized of passive device
It is melted into as important research content.Recently, by the way that the function of power splitter and bandpass filter is synthesized in a device, that is, design
Power divider with filtering characteristic, can greatly reduce total size of device, and the miniaturization for microwave system has
Significance.Moreover, traditional power divider needs to realize broadband performance by increasing series, such a process increases circuit
Complexity, circuit size and insertion loss.But it is designed to that there is good broadband power allocation performance simultaneously, and can enough obtains
The structure for obtaining the compact-sized filtering characteristic power divider of high selectivity and high out-of-side rejection performance is also short of very much.
The content of the invention
In view of this, the purpose of the present invention is to propose to a kind of wideband power distributor with filtering characteristic of excellent performance
Circuit prototype.In terms of power distribution, the circuit can realize relatively low pass-band loss and preferable port match degree, while
The isolation of height output port can still be realized in the bandwidth range of non-constant width, and this performance is in traditional power divider
It is difficult to obtain.In terms of filtering characteristic, the circuit can realize high selectivity, high out-of-side rejection performance, higher harmonics rejection ability
Extremely wide bandwidth can realize scope, so as to meet the device of different performance requirements using this circuit prototype.
In order to reach the purpose of foregoing invention, the invention provides a kind of microstrip coupled line of three conductors based on terminal loads
The power divider with filtering characteristic of structure.Input port, it is connected to using 50 ohm transmission lines with filtering characteristic
In the main body of power divider, for by input signal introduction means；First output port and the second output port, are located at respectively
The both sides of circuit symmetrical axle, the signal all equal for the phase and amplitude after exporting after filtering；One three conductor micro-strip coupling
Wire structure, one end connection input port of middle conductor, for input signal to be conveyed into device main body.Two be arranged symmetrically
The non-conterminous coupling line one end of bar connects the both sides of isolation resistance respectively, and other end connects the first output port and second respectively
Output port, for the signal after filtering to be respectively transmitted into two output ports.The microstrip line of two impedance step changes,
One end of be arranged symmetrically two non-conterminous coupling lines of the microstrip coupled cable architecture of three conductors is connected to, and respectively at
One output port and the second output port are connected.Selected for the Bandwidth adjustment in the filtering characteristic of power divider and wave filter
Selecting property adjusts.Isolation resistance, a lumped parameter resistance is used among actually realizing.It is microstrip coupled to be connected to three conductors
One end of be arranged symmetrically two non-conterminous coupling lines of cable architecture.For isolating the first output port and the second output end
Mouthful, and ensure that on the first output port and the second output port good impedance matching can be realized.
Wherein the first output port, the second output port, a microstrip coupled cable architecture of three conductors and two impedance steps
The microstrip line of change is all symmetrically placed on symmetry axis.
The value of isolation resistance therein can determine its resistance using Frequency Structure Simulator HFSS optimization methods, so as to up to
To best isolation effect and impedance matching performance.
Three conductors coupling line (4) electrical length therein is 90 degree at centre frequency.Two impedance steps therein become
The electrical length of the microstrip line of each same impedance of the microstrip line (5) of change is 90 degree at centre frequency.
The beneficial effects of the invention are as follows：Using three conductor coupled line structures of loading, the broadband with filtering characteristic is realized
Power divider.In terms of power splitting/synthesis network, it is possible to achieve each input and output port has preferable in free transmission range
Matching performance, there is low insertion loss.And it can show to isolate well in the range of non-constant width between output port
Degree.In terms of filtering characteristic, there is extremely wide bandwidth can realize scope, passband high selectivity and outstanding Out-of-band rejection performance.
These performances can be adjusted simply by changing certain several parameter in circuit, and final design goes out to meet actual demand
Device.
Brief description of the drawings
Fig. 1 is the circuit structure diagram for the wideband power distributor that the present invention has filtering characteristic；
Fig. 2 is the printed board schematic diagram for the wideband power distributor that the present invention has filtering characteristic；
Fig. 3 is the signal dividing frequency response diagram under the conditions of the different relative bandwidths of the present invention；
Fig. 4 is the S21 and S11 of embodiment of the present invention emulation and test result figure；
Fig. 5 is the S22 and S23 of embodiment of the present invention emulation and test result figure；
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment and join
According to accompanying drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring this
The concept of invention.
Referring to Fig. 1, first describe the circuit diagram of the power splitter with filtering characteristic of the present invention, the power splitter it is defeated
The characteristic impedance of inbound port and two output ports is all 50 Ω, i.e. Z0.The electricity of each microstrip line unit in circuit diagram
Length θ is 90 degree at the centre frequency of bandwidth of operation.Three conductor coupling lines, this three are set here lead to simplify design
The width of body is equal, therefore the odd even characteristic impedance using every two coupling lines as reference is expressed as Z0eAnd Z0o.Two symmetrical
The characteristic impedance of microstrip line of impedance step change be expressed as Z1And Z2.Between between two non-conterminous coupling lines
The resistance of the isolation resistance of loading is expressed as R.
Referring to Fig. 2, the printed board physical size schematic diagram of an example power splitter in the present invention is illustrated.The present invention's
Power splitter is that the microstrip circuitry being printed on high-frequency low-consumption dielectric-slab is main body, plus in order to realize input/output port
50 ohm transmission lines of physical connection and the complete conductors ground plane composition of bottom.
Referring to Fig. 3, the signal distribution normalized frequency response diagram under the conditions of the different relative bandwidths of the present invention is illustrated.Scheming
In 3, the example of the different power splitter with filtering characteristic of three kinds of relative bandwidths is illustrated, their relative bandwidth is respectively
33%th, 66% and 99%.Under 33% bandwidth, the circuit parameter values in Fig. 1 are Z0e=206 Ω, Z0o=146.5 Ω, Z1=42
Ω and Z2=180 Ω.Under 66% bandwidth, the circuit parameter values in Fig. 1 are Z0e=166 Ω, Z0o=95.3 Ω, Z1=72 Ω and
Z2=108 Ω.Under 99% bandwidth, the circuit parameter values in Fig. 1 are Z0e=130 Ω, Z0o=53 Ω, Z1=96.4 Ω and Z2=
48.2Ω.The power splitter of these different bandwidths, if be made of the medium substrate of TLY-8 materials, its relative dielectric constant is
2.55, loss angle tangent 0.0018, thickness 0.78mm, each power splitter can be come real using conventional commercial process
It is existing.Therefore, on this medium substrate, the present invention can realize bandwidth range between 33%-99% so that the design can be with
Designed suitable for the practical devices of a variety of different bandwidths requirement.The centre frequency of power splitter of the definition with filtering characteristic is f0,
In the passband both sides of filtering characteristic, the frequency of nearest zero point (TZ1 and TZ2) can be calculated by following formula, wherein RZ=Z2/
Z1。
The initial value of isolation resistance can be calculated by formula 3, then by using the Microwave simulation work such as HFSS
Tool optimizes to isolation resistance, with the isolation performance being optimal.
In order that the device of different performance requirement is designed with the present invention, it is proposed that a design procedure：
1. first according to actual requirement, it is determined that the centre frequency for the power splitter with filtering characteristic to be designed, relative
Bandwidth and selectivity.
2. by the bandwidth and selectivity of power splitter, two zero points (TZ1 and TZ2) frequency f is determinedTZ1And fTZ2.And
According to formula (1) and formula (2), R is calculatedZValue.
3. by adjusting Z0e, Z0oAnd Z1Value, so as to reach required pass band width.
4. then by further adjusting Z0e, Z0oAnd Z1, to adjust the Out-of-band rejection ability in filtering characteristic, to reach real
The requirement of border filtering characteristic.
5. using the parameter value of above-mentioned design, generate domain and emulated with the Microwave simulation instrument such as HFSS and performance
Optimization.
6. isolation resistance is optimized finally by using the Microwave simulation instrument such as HFSS, with the isolation being optimal
Performance.So as to complete final design.
Inventions have been the multiple test situation implemented experiment, now briefly describe embodiment：
The microstrip line printed board (as shown in Figure 2) of embodiment is the substrate system using the TLY-8 materials of Taconic companies
Into its relative dielectric constant is 2.55, loss angle tangent 0.0018, thickness 0.78mm.Designed has filtering characteristic
The centre frequency of power splitter be 3.0GHz, relative bandwidth 62%.The shape of microstrip circuitry is as shown in Fig. 2 embodiment
Circuit parameter values are Z0e=166 Ω, Z0o=95.3 Ω, Z1=72 Ω, Z2=108 Ω and R=715 Ω.The specific thing of embodiment
Reason size is chosen to be respectively：W0=2.2mm, W1=1.2mm, L1=20mm, W2=0.5mm, L2=22.5mm, W3=0.4mm, W4
=0.3mm, S=0.4mm, L3=17.1mm and L4=0.75mm.
Referring to Fig. 4 and Fig. 5, the emulation and survey of the embodiment of the broadband power divider with filtering characteristic of the present invention are illustrated
Test result.Wherein S11 refers to reflectance factor when input port connects 50 Ω loads, when S22 refers to that output port connects 50 Ω loads
Reflectance factor, when S21 refers to that all of the port connects 50 Ω loads, the transmission coefficient of input port to the first output port, S23 is
Refer to other ports connect 50 Ω load when, isolation of first output port to the second output port.Due to the circuit be it is symmetrical,
Therefore the reflectance factor of the first output port and the reflectance factor of the second output port are equal, and the first output port is to second
The isolation of the isolation of output port and the second output port to the first output port is equal.Therefore shown in the performance of reality
In, it show only the reflectance factor S21 of the first output port and the isolation S23 of the first output port to the second output port.
As shown in Figure 4 and Figure 5, emulation and test result are coincide substantially.The power splitter with filtering characteristic of embodiment
Centre frequency is 3.0GHz, relative bandwidth 62%.Compared with desired result, the row of the structure that emulates and survey in zero frequency
It is varied from terms of cloth, main cause is the parameter given with schematic diagram during the domain of reality is realized and optimized
Compared to can change.And compared with desired result, the filtering characteristic change of power splitter is little, disclosure satisfy that wanting for actual design
Ask.The power splitter of the filtering characteristic each port in passband can realize good matching, and have between output port
There is good isolation.Insertion loss in passband is less than 0.45dB.And if using traditional Wilkinson power splitters and width
When band filter cascades, pass-band loss is more than 1.0dB.
As described above, a kind of wideband power distributor with filtering characteristic of the present invention, leads by using the three of loading
Body coupled line structure, can be by a device, while realizes power dividing function and signal filter function, and with extremely wide
Bandwidth can realize scope.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention
Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing
Change example.
Claims (5)
1. a kind of new wideband power distributor with filtering characteristic, can be by a device, while realizes power distribution
Function and signal filter function, and can realize scope with extremely wide bandwidth.Characterized in that, the power divider includes：
Input port (1), is connected to using 50 ohm transmission lines in the main body of the power divider with filtering characteristic, for inciting somebody to action
Input signal introduction means；
First output port (2) and the second output port (3), it is filtered for exporting respectively positioned at the both sides of circuit symmetrical axle
The all equal signal of phase and amplitude after ripple；
One microstrip coupled cable architecture of three conductors (4), one end connection input port (1) of middle conductor, for by input signal
It is conveyed into device main body.The one end for two non-conterminous coupling lines being arranged symmetrically connects the both sides of isolation resistance (6) respectively, separately
Outer one end connects the first output port (2) and the second output port (3) respectively, for the signal after filtering to be respectively transmitted to
Two output ports.
The microstrip line (5) of two impedance steps change, it is connected to being arranged symmetrically for the microstrip coupled cable architecture of three conductors (4)
One end of two non-conterminous coupling lines, and be connected respectively at the first output port (2) with the second output port (3).For
Bandwidth adjustment and wave filter in the filtering characteristic of power divider selectively adjust.
Isolation resistance (6), a lumped parameter resistance is used among actually realizing.It is connected to the microstrip coupled line of three conductors
One end of be arranged symmetrically two non-conterminous coupling lines of structure (4).For isolating the first output port (2) and the second output
Port (3), and ensure that good impedance matching can be realized on the first output port (2) and the second output port (3).
2. the wideband power distributor according to claim 1 with filtering characteristic, described the first output port (2),
The microstrip line (5) of second output port (3), a microstrip coupled cable architecture of three conductors (4) and the change of two impedance steps is all
It is symmetrically placed on symmetry axis.
3. the power divider according to claim 1 with filtering characteristic, the value of described isolation resistance can use
Frequency Structure Simulator HFSS optimization methods determine its resistance, to reach best isolation effect and impedance matching performance.
4. the power divider according to claim 1 with filtering characteristic, three described conductor coupling line (4) electrical length
It it is 90 degree at centre frequency.
5. the power divider according to claim 1 with filtering characteristic, described two impedance steps change micro-
The electrical length of the microstrip line of each same impedance with line (5) is 90 degree at centre frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863481.2A CN107634294A (en) | 2017-09-22 | 2017-09-22 | A kind of new wideband power distributor with filtering characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863481.2A CN107634294A (en) | 2017-09-22 | 2017-09-22 | A kind of new wideband power distributor with filtering characteristic |
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| CN107634294A true CN107634294A (en) | 2018-01-26 |
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| CN201710863481.2A Pending CN107634294A (en) | 2017-09-22 | 2017-09-22 | A kind of new wideband power distributor with filtering characteristic |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963470A (en) * | 2018-06-27 | 2018-12-07 | 南通大学 | A kind of antenna array feeding network |
| CN110034361A (en) * | 2019-04-23 | 2019-07-19 | 安徽大学 | It is a kind of towards 5G communication miniature ultra wide band filtering function divide feeding network and its design method |
| CN112448113A (en) * | 2020-11-19 | 2021-03-05 | 南京邮电大学 | Butterfly-shaped microstrip filtering power divider |
| CN114497943A (en) * | 2021-12-16 | 2022-05-13 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband reconfigurable routing network and frequency band allocation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868010A (en) * | 2012-08-31 | 2013-01-09 | 北京邮电大学 | Bagley Polygon power distributor of coupled micro-strip line |
| CN106785289A (en) * | 2016-12-26 | 2017-05-31 | 西安电子科技大学 | Gao Gongfen based on three line coupled structures compares broadband power divider |
| CN106972233A (en) * | 2017-05-10 | 2017-07-21 | 厦门大学 | A kind of four tunnel filtering type power splitters based on three line coupled structures |
-
2017
- 2017-09-22 CN CN201710863481.2A patent/CN107634294A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868010A (en) * | 2012-08-31 | 2013-01-09 | 北京邮电大学 | Bagley Polygon power distributor of coupled micro-strip line |
| CN106785289A (en) * | 2016-12-26 | 2017-05-31 | 西安电子科技大学 | Gao Gongfen based on three line coupled structures compares broadband power divider |
| CN106972233A (en) * | 2017-05-10 | 2017-07-21 | 厦门大学 | A kind of four tunnel filtering type power splitters based on three line coupled structures |
Non-Patent Citations (3)
| Title |
|---|
| BO ZHANG: "Wideband filtering power divider with high selectivity", 《ELECTRONICS LETTERS》 * |
| KAI XU WANG: "Gysel Power Divider With Arbitrary Power Ratios and Filtering Responses Using Coupling Structure", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
| XIU YIN ZHANG: "Compact Filtering Power Divider With Enhanced Second-Harmonic Suppression", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963470A (en) * | 2018-06-27 | 2018-12-07 | 南通大学 | A kind of antenna array feeding network |
| CN110034361A (en) * | 2019-04-23 | 2019-07-19 | 安徽大学 | It is a kind of towards 5G communication miniature ultra wide band filtering function divide feeding network and its design method |
| CN112448113A (en) * | 2020-11-19 | 2021-03-05 | 南京邮电大学 | Butterfly-shaped microstrip filtering power divider |
| CN114497943A (en) * | 2021-12-16 | 2022-05-13 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband reconfigurable routing network and frequency band allocation method |
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