CN204145430U - The small-sized power splitter of a kind of ferrite bead transformer type broadband - Google Patents
The small-sized power splitter of a kind of ferrite bead transformer type broadband Download PDFInfo
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- CN204145430U CN204145430U CN201420629226.3U CN201420629226U CN204145430U CN 204145430 U CN204145430 U CN 204145430U CN 201420629226 U CN201420629226 U CN 201420629226U CN 204145430 U CN204145430 U CN 204145430U
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Abstract
The utility model relates to the small-sized power splitter of a kind of ferrite bead transformer type broadband, it is characterized in that, comprise: adopt lumped-parameter element composition merit parallel circuit, comprise sending-end impedance Rs, output impedance Ra and output impedance Rb, be connected by isolation resistance Rc between described output impedance Ra and output impedance Rb, the impedance transformation unit Trans adopting magnetic ring transformer structure is in series with between the two ends of isolation resistance Rc and sending-end impedance Rs, magnetic ring transformer adopts the diplopore magnet ring of symmetrical design, thickness is 0.5mm, diameter is had to be two circular holes of 0.9mm in magnet ring, distance of center circle is 1.4mm, two sections of circular arcs be respectively with the semicircle of two concyclic hearts of circular hole, diameter is 2mm.The utility model structure is simple, and have voltage standing wave ratio low, Insertion Loss is little, the advantage that output isolation is high, and relative volume is little, and difficulty of processing is little, can complete distribution and the synthesis of power in very broadband.
Description
Technical field
The utility model belongs to microwave engineering techniques field, particularly the small-sized power splitter of a kind of ferrite bead transformer type broadband.
Background technology
Power splitter and synthesizer are a kind of power division of microwave technical field and synthin, are widely used in the feeder system of the microwave regime such as closed-circuit television, communication system and over-the-horizon radar.Along with the development of modern electronic technology, the miniaturization of device and broadband receive very large attention.The development of the miniaturized power splitter part of broadband, unnecessary spectrum conversion element can be reduced on the one hand, meet the requirement of broadband complete machine, not only reduced costs but also be beneficial to overall performance to improve, simultaneously, system only needs the device of lesser amt, and even a device just can all cover whole frequency range.In addition, in the technical indicator of power division-synthesizer, the separating end of power divider must have the interference that higher isolation just can be avoided between different passage.
The frame mode of microstrip line or coaxial cavity that adopts realizes more in the market.Although microstrip line construction makes simple, relative bandwidth is little; Although coaxial cavity structure Insertion Loss is little, isolation is poor.
Summary of the invention
The utility model is little for existing power splitter bandwidth, the problem of isolation difference, and the utility model provides the small-sized power splitter of a kind of ferrite bead transformer type broadband, meets the requirement of modern wireless telecommunication system broadband, volume miniaturization.
The main technical schemes that the utility model adopts is: the small-sized power splitter of a kind of ferrite bead transformer type broadband, it is characterized in that, comprise: adopt lumped-parameter element composition merit parallel circuit, comprise sending-end impedance Rs, output impedance Ra and output impedance Rb, be connected by isolation resistance Rc between described output impedance Ra and output impedance Rb, the impedance transformation unit Trans adopting magnetic ring transformer structure is in series with between the two ends of described isolation resistance Rc and sending-end impedance Rs, described magnetic ring transformer adopts the diplopore magnet ring be made up of MnZn material, magnet ring is symmetrical design, thickness is 0.5mm, diameter is had to be two circular holes of 0.9mm in magnet ring, distance of center circle is 1.4mm, two sections of circular arcs be respectively with the semicircle of two concyclic hearts of circular hole, diameter is 2mm, two straight lines are the tangent line of two semicircular.
The utility model also adopts following attached technical scheme:
Described magnetic ring transformer adopts two copper paint envelope curves to be welded on input port and output port respectively after the public arm one of magnet ring encloses.
Described merit parallel circuit and merit parallel circuit headtotail, be in series with the attenuator that can form multichannel merit and divide output between every two merit parallel circuits.
The beneficial effect adopting the utility model to bring is: it is low that the utility model has voltage standing wave ratio within the scope of 30MHz-3000MHz, Insertion Loss is little, the advantage that output isolation is high, structure is simple simultaneously, relative volume is little, difficulty of processing is little, can complete distribution and the synthesis of power in very broadband.
Accompanying drawing explanation
Be described further below in conjunction with accompanying drawing:
Fig. 1 is the structure principle chart of Wilkinson power divider circuit.
Fig. 2 is the structure principle chart of the utility model lumped circuit.
Fig. 3 is the magnet ring front view that the utility model uses.
Fig. 4 is the coiling schematic diagram of enamelled wire on the magnet ring that uses of the utility model.
Fig. 5 is the connection diagram that the utility model series connection uses.
Embodiment
As shown in Figure 1, the characteristic impedance of Wilkinson power divider input and output is Z0, for the situation that power is divided equally, and the branch line characteristic resistance Z1=between input and output mouth
z0, line length is quatrter-wavelength line, and at a branch line end resistance R transboundary, its value is 2Z0, can obtain it by microwave theory, this power splitter when 2a, 3a port connects matched load, the input areflexia of 1a port.The power inputted by port one a is divided equally on port 2a and 3a, and mutually isolated between 2a, 3a port.
As shown in Figure 2, in order to reduce circuit size, adopt lumped-parameter element composition merit parallel circuit, comprise sending-end impedance Rs, output impedance Ra and output impedance Rb, be connected by isolation resistance Rc between described output impedance Ra and output impedance Rb, be in series with the impedance transformation unit Trans adopting magnetic ring transformer structure between the two ends of described isolation resistance Rc and sending-end impedance Rs, described magnetic ring transformer adopts enamelled wire to make wire.
In addition, Insertion Loss affects by the size of ferrite bead, magnetic permeability, winding turns; The isolation resistance that isolation can choose appropriate value is connected across between two outputs; Amplitude and phase unbalance degree depend on the symmetry of circuit to a great extent.According to the theory of " radio frequency ferrite broadband device " book that Zhang Jigang writes, can calculate with reference to formula: I represents isolation, L
prepresent shunt inductance, f
minfor lower-frequency limit, T is two output port transmission coefficients, and N is coil turn, μ
'for magnet ring magnetic permeability real part (getting the value of μ when lower frequency limit when calculating N), A
tfor magnet ring magnetic circuit area of section, d is magnet ring average diameter, R
abfor isolation resistance.
I=10Log
；
；
Through theory calculate and experiment test, getting isolation is 20dB, and magnetic permeability is 5000, and the oval long diameter of magnet ring is 3.4mm, and wide diameter is 2mm, is highly 0.5mm, and diameter of bore is 0.9mm, and isolation resistance is 360 Ω.Now, the bandwidth that test can obtain power splitter can reach 30MHz-3000MHz, and insertion loss is 3.6Db-4dB, isolation 16dB, standing wave 1.9, phase equalization ± 1.
Magnet ring is that MnZn material is made, and as shown in Figure 3, diplopore magnet ring is symmetrical design, and thickness is 0.5mm.Have diameter to be two circular holes of 0.9mm in magnet ring, distance of center circle is 1.4mm.Two sections of circular arcs respectively with the semicircle of two concyclic hearts of circular hole, diameter is 2mm.Two straight lines are the tangent line of two semicircular.
As shown in Figure 4,4,5 is red 0.1mm enamelled wire, and 6,7 is blue 0.1mm enamelled wire, and first mutually together twisted for two enamelled wires, then enclose around common wall one, being then intertwined 4,6 is welded on input, and 5,7 are welded on two outputs respectively.
As shown in Figure 5, the utility model is the power division network of the simplest lumped-parameter element composition, based on this, by cascade, can form more complicated 2
nmultiple-channel output power division network, i.e. described merit parallel circuit and merit parallel circuit headtotail, is in series with the attenuator that can form multichannel merit and divide output between every two merit parallel circuits.Standing wave but due to these the simplest two power division networks is poor, reaches 1.9, therefore must add the attenuator of 2 ~ 3dB between every two-stage power division network when cascade, 1., 2., 3., 4., 5., is 6. attenuator in figure, can optimize impedance matching.
In addition, the utility model forward, oppositely can to use, for power splitter single shown in Fig. 2, when signal is from the input of 1b port, when 2b, 3b port exports, input power is assigned to 2b, 3b port, is power divider; When signal is from the input of 2b, 3b port, when 1b port exports, input power is synthesized to 1b port, is power combiner.
The utility model is not limited to above embodiment, and every other execution modes drawn according to the technical solution of the utility model by those skilled in the art, drop within protection range of the present utility model equally.
Claims (3)
1. the small-sized power splitter of ferrite bead transformer type broadband, it is characterized in that, comprise: adopt lumped-parameter element composition merit parallel circuit, comprise sending-end impedance Rs, output impedance Ra and output impedance Rb, be connected by isolation resistance Rc between described output impedance Ra and output impedance Rb, the impedance transformation unit Trans adopting magnetic ring transformer structure is in series with between the two ends of described isolation resistance Rc and sending-end impedance Rs, described magnetic ring transformer adopts the diplopore magnet ring be made up of MnZn material, magnet ring is symmetrical design, thickness is 0.5mm, diameter is had to be two circular holes of 0.9mm in magnet ring, distance of center circle is 1.4mm, two sections of circular arcs be respectively with the semicircle of two concyclic hearts of circular hole, diameter is 2mm, two straight lines are the tangent line of two semicircular.
2. the small-sized power splitter of a kind of ferrite bead transformer type broadband as claimed in claim 1, is characterized in that: described magnetic ring transformer adopts two copper paint envelope curves to be welded on input port and output port respectively after the public arm one of magnet ring encloses.
3. the small-sized power splitter of a kind of ferrite bead transformer type broadband as claimed in claim 1, is characterized in that: described merit parallel circuit and merit parallel circuit headtotail, is in series with the attenuator that can form multichannel merit and divide output between every two merit parallel circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629226.3U CN204145430U (en) | 2014-10-28 | 2014-10-28 | The small-sized power splitter of a kind of ferrite bead transformer type broadband |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629226.3U CN204145430U (en) | 2014-10-28 | 2014-10-28 | The small-sized power splitter of a kind of ferrite bead transformer type broadband |
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| CN204145430U true CN204145430U (en) | 2015-02-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110395A (en) * | 2017-12-15 | 2018-06-01 | 杭州紫光网络技术有限公司 | A kind of two power splitter of novel high-power low frequency magnet ring |
| CN115189112A (en) * | 2022-07-08 | 2022-10-14 | 郑州轻工业大学 | Bisection type six-wire-three-port magnetic electric power divider and measuring device thereof |
| CN117134729A (en) * | 2023-10-25 | 2023-11-28 | 南京纳特通信电子有限公司 | High-power synthesizer, synthesizing method and design method |
-
2014
- 2014-10-28 CN CN201420629226.3U patent/CN204145430U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110395A (en) * | 2017-12-15 | 2018-06-01 | 杭州紫光网络技术有限公司 | A kind of two power splitter of novel high-power low frequency magnet ring |
| CN108110395B (en) * | 2017-12-15 | 2024-02-02 | 杭州紫光网络技术有限公司 | High-power low-frequency magnetic ring two-power divider |
| CN115189112A (en) * | 2022-07-08 | 2022-10-14 | 郑州轻工业大学 | Bisection type six-wire-three-port magnetic electric power divider and measuring device thereof |
| CN115189112B (en) * | 2022-07-08 | 2024-05-14 | 郑州轻工业大学 | Bipartition six-line-three-port magneto-electric power divider and measuring device thereof |
| CN117134729A (en) * | 2023-10-25 | 2023-11-28 | 南京纳特通信电子有限公司 | High-power synthesizer, synthesizing method and design method |
| CN117134729B (en) * | 2023-10-25 | 2024-01-30 | 南京纳特通信电子有限公司 | High-power synthesizer, synthesizing method and design method |
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| GR01 | Patent grant |