CN208369550U - High-power higher harmonics hilted broadsword multiple branch circuit switch - Google Patents
High-power higher harmonics hilted broadsword multiple branch circuit switch Download PDFInfo
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- CN208369550U CN208369550U CN201820675392.5U CN201820675392U CN208369550U CN 208369550 U CN208369550 U CN 208369550U CN 201820675392 U CN201820675392 U CN 201820675392U CN 208369550 U CN208369550 U CN 208369550U
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- hilted broadsword
- branch circuit
- higher harmonics
- circuit switch
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Abstract
The utility model provides a kind of high-power higher harmonics hilted broadsword multiple branch circuit switch, which includes the more than two branches branched out from a common end, described two above branch circuit parallel connection connections；Each branch includes the first PIN diode and the second PIN diode for being parallel to ground；In each branch, first PIN diode is than second PIN diode closer to the common end, and the spacing between first PIN diode and the common end and the spacing between first PIN diode and second PIN diode are equal.Thus, it is possible to provide the high-power higher harmonics hilted broadsword multiple branch circuit switch that power endurance is strong and loss is small, harmonics restraint power is strong, isolation is high.
Description
Technical field
The high-power higher harmonics hilted broadsword used when the utility model relates to carry out signal switching in field of microwave communication is more
Branch switch.
Background technique
High-power higher harmonics hilted broadsword multiple branch circuit switch, such as high-power single-pole three-throw switch, are the small, higher harmonics of a loss
The switch of inhibition can be widely applied to the signal switching in field of microwave communication, be used especially for the high-power defeated of transmitter
Out end signal switch, have the characteristics that loss it is small, resistance to it is high-power, harmonic inhibition capability is strong, isolation is high, minimize.
High-power higher harmonics hilted broadsword multiple branch circuit switchs, in all multi objectives of for example high-power single-pole three-throw switch, compares pass
The index of key is high-power ability to bear, Insertion Loss, harmonics restraint and isolation.Ideally, loss of signal when switch conduction
It is the smaller the better, and isolation is the bigger the better, the stronger harmonic inhibition capability the better.But in actual engineering in use, device, substrate
Etc. brings loss of signal and space loss be inevitable, in single-pole three-throw switch work, be connected all the way, other two
Road shutdown, the diode over the ground of guiding path reversely end, and ideally diode junction capacitance is constant, but in practical application
In, when input radio frequency signal power is larger, diode junction capacitance variation can be caused to generate harmonic wave, and when power is sufficiently large, makes
It over the ground should be in impedance in the diode of capacitive, so that switch link is in clipping state, signal can not be normal through.
Utility model content
The utility model is capable of providing resistance to big function precisely in order to solve above-mentioned the problems of the prior art and design
Rate, the hilted broadsword multiple branch circuit switch that power endurance is strong and loss is small, harmonics restraint power is strong, isolation is high.
In order to solve the above technical problems, the utility model adopts the following technical scheme.
That is: a kind of high-power higher harmonics hilted broadsword multiple branch circuit switch, including the two or more branched out from an input common end
Branch, described two above branch circuit parallel connections connections, the hilted broadsword multiple branch circuit switch is characterized in that each branch is equal
First diode and the second diode including being parallel to ground；In each branch, the first diode is than described second
Diode is closer to the input common end, and the spacing between the first diode and the input common end, Yi Jisuo
The spacing stated between first diode and second diode is equal.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, it is preferred that using PIN diode as described the
One diode and second diode.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, it is preferred that the first diode with it is described defeated
The spacing entered between the spacing between common end and the first diode and second diode is provision wavelengths
A quarter.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, it is preferred that the provision wavelengths are the switch
Wavelength under the centre frequency of working frequency range.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, the hilted broadsword multiple branch circuit switch can be the double branch of hilted broadsword
Way switch is also possible to three branch switch of hilted broadsword, can also be four branch switch of hilted broadsword.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, it is preferred that in each branch, described first
Diode and the respective anode of second diode are connect with switch driving circuit；When branch conducting, the branch
The switch driving circuit connected is to the first diode and second diode application reverse bias electricity in the branch
Pressure, so that the first diode and second diode in the branch are reversely ended.
In above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, the reverse bias voltage can be -100V.
Utility model effect
It is switched by the high-power higher harmonics hilted broadsword multiple branch circuit of the utility model, due to reducing the junction capacity pair of diode
The influence of switching pathway loss improves the isolation of switch, and makes diode junction capacitance will not be with when high-power
The enhancing of radiofrequency signal and change, improve the blocking capability of diode and the harmonic inhibition capability of branch, therefore can
Resistance to hilted broadsword multiple branch circuit switch high-power, power endurance is strong and loss is small, harmonics restraint power is strong, isolation is high is provided.
Detailed description of the invention
Fig. 1 is the schematic diagram of the high-power single-pole three-throw switch as an embodiment of the present invention.
Fig. 2 is the ADS simulation result diagram of the high-power single-pole three-throw switch as an embodiment of the present invention.
Fig. 3 is the layout of the high-power single-pole three-throw switch as an embodiment of the present invention.
Fig. 4 is the circuit board for having reserved high-power single-pole three-throw switch installation site as an embodiment of the present invention
Schematic diagram.
Description of symbols
1,2,3,4,5,6 diode；IN input terminal；OUT1, OUT2, OUT3 output end；TTL1, TTL2, TTL3 switch drive
Dynamic circuit.
Specific embodiment
The utility model is described in detail With reference to embodiment.Those skilled in the art should know
Dawn, following explanations are merely exemplary, and do not limit the claimed range of the utility model.
The utility model is switched suitable for high-power higher harmonics hilted broadsword multiple branch circuit, below (also referred to as with three branch switch of hilted broadsword
" single-pole three-throw switch ") for be illustrated.
Generally, when building single-pole three-throw switch, in order to ensure to powerful ability to bear, multiselect is thicker with I layers
PIN diode, and this PIN diode according to traditional series connection or string and combine mode, can because I thickness, knot electricity
Hold big and lead to that impedance matching can not be carried out in input common end, so that Insertion Loss becomes larger.
And the high-power higher harmonics hilted broadsword multiple branch circuit switch of the utility model includes two branched out from an input common end
A above branch (being three branches in present embodiment), more than two branches (being three branches in present embodiment)
It is connected in parallel.Each branch includes the first diode and the second diode for being parallel to ground；In each branch, first diode
Spacing and the one or two pole than the second diode closer to input common end, and between first diode and input common end
It manages equal with the spacing between the second diode.Using structure that is such, being arranged in parallel in every branch two diodes, this
Sample not only ensure that the junction capacity of diode when I thickness degree is thicker was smaller to switch path loss impacts, but improve switch every
From degree, condition is provided for subsequent raising harmonics restraint.
About the selection of diode chip, high pressure resistant, I thickness degree thickness PIN diode is selected preferably, so that switch foot
It is enough high-power signal by when work normally and can guarantee low-loss.
In addition, every branch by two tube cores (diode) be parallel to ground in a manner of formed, and tube core (diode) that
Spacing between spacing, first tube core (first diode) between this and input common end is according to the center frequency of working frequency range
Wavelength under rate determines, such as can be 1/4 wavelength under the frequency.
When single-pole three-throw switch when being wherein connected all the way, switch driving circuit applies reversed inclined to the diode of the branch
Voltage is set, allows it in capacitive reactance, plays the role of reversely ending, so that signal is as few as possible to enter stratum from the diode.Two
The Insertion Loss of the reversed cut-off degree direct influence guiding path of pole pipe and the harmonics restraint in path, so diode ends more
Thoroughly, the loss of guiding path is smaller, harmonic inhibition capability is stronger.
When switch works in the case where high-power RF signal inputs, the excessively high meeting of equivalent voltage is so that diode junction capacitance
It changes, generates harmonic wave, even resulting in diode from capacitive becomes resistive, relative to signal conduction.So diode is anti-
It is sufficiently large to bias voltage to offset the equivalent voltage of high-power RF signal, so that diode junction capacitance, which is in, stablizes shape
State avoids generating harmonic wave, while diode is thoroughly reversely ended in capacitive, will not be in over the ground because of the variation of radiofrequency signal
Impedance.Therefore, applying high reverse bias voltage enables to diode junction capacitance will not be with radiofrequency signal when high-power
Enhancing and change, the blocking capability of diode can be greatly improved, reduce the Insertion Loss of link, greatly strengthen switch
Harmonic inhibition capability and isolating power.
The specific embodiment of present embodiment is illustrated below.
Embodiment 1
As shown in Figure 1, high-power higher harmonics single-pole three-throw switch includes three branches branched out from an input common end
(IN-OUT1；IN-OUT2；IN-OUT3), three branch circuit parallel connection connections.Each branch includes the one or two pole for being parallel to ground
1,3,5 and the second diode 2,4,6 of pipe.In each branch, 1,3,5 to the second diode 2,4,6 of first diode is closer to defeated
Enter common end, and spacing and first diode 1,3,5 and the two or two between first diode 1,3,5 and input common end
Spacing between pole pipe 2,4,6 is equal, be operating switch working frequency range centre frequency under wavelength 1/4.
The model of diode 1,2,3,4,5,6 can also be different a branch either just the same in all branches
The diode model of middle same position is the same, it is preferred to use the thicker PIN diode of the I layer of same model, thus, it is possible to guarantee
Power bearing ability and pressure voltage.
First tube core (first diode) 1 and input common end spacing, two tube cores (the first, second diode) 1,2
Spacing to each other keeps 1/4 wavelength, thus, it is possible to guarantee the impedance matching of link, guarantees that link load is as small as possible.
As shown in Figure 1, control level portions, when OUT1 conducting, OUT2, OUT3 shutdown, TTL1 export reverse bias electricity
Pressure -100V, TTL2, TTL3 output+5V forward conduction voltage.Then, diode 3,4,5,6 be in impedance over the ground, and signal is led over the ground
Prime, signal OUT2, OUT3 shutdown are reflexed to after logical again, diode 1,2 is in over the ground capacitive reactance, is ended over the ground, signal is in the path
Upper low-loss passes through.Because reverse bias voltage -100V is sufficiently high, it is sufficient to the equivalent electricity that radiofrequency signal generates when offsetting high-power
Pressure, avoid diode abnormal, while also avoid because high-power signal cause diode junction capacitance change due to generate it is humorous
The phenomenon that wave.Reverse bias voltage -100V enables diode to end as far as possible, signal can it is as much as possible walk main road
Pass through, ensure that low-loss, higher harmonics rejection ability.
Fig. 2 shows the ADS simulation result diagrams of the high-power single-pole three-throw switch of above-described embodiment.From the simulation result diagram
As can be seen that the off state of diode is good.
Embodiment 2
As shown in figure 3, present embodiments providing the circuit layout of high-power single-pole three-throw switch.
Embodiment 3
As shown in figure 4, present embodiments providing the circuit board for having reserved high-power single-pole three-throw switch installation site.
Embodiment 4
In the embodiment of above-mentioned high-power higher harmonics hilted broadsword multiple branch circuit switch, by hilted broadsword multiple branch circuit switch designs at list
Three branch switch of knife (single-pole three-throw switch) in the present embodiment can be by switch designs at hilted broadsword double branch switch, hilted broadsword four
The switch of branch switch or more.
Specific embodiment of the utility model is illustrated above, but the embodiment is for the guarantor of the utility model
Shield range does not constitute a limitation simultaneously.Those skilled in the art should know, various changes of above-described embodiment be also included within it is practical
In novel protection scope.
Claims (9)
1. a kind of high-power higher harmonics hilted broadsword multiple branch circuit switch, including more than two branched out from an input common end
Road, described two above branch circuit parallel connection connections, which is characterized in that each branch includes the one or two pole for being parallel to ground
Manage (1,3,5) and the second diode (2,4,6)；In each branch, the first diode is more than second diode
The close input common end, and the spacing and the described 1st between the first diode and the input common end
Spacing between pole pipe and second diode is equal.
2. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 1, which is characterized in that use PIN diode
As the first diode and second diode.
3. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 1 or 2, which is characterized in that the described 1st
The spacing between spacing and the first diode and second diode between pole pipe and the input common end is equal
For a quarter of provision wavelengths.
4. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 3, which is characterized in that the provision wavelengths are
Wavelength under the centre frequency of the switch working frequency range.
5. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 1, which is characterized in that the hilted broadsword multiple branch circuit
Switch is the double branch switch of hilted broadsword.
6. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 1, which is characterized in that the hilted broadsword multiple branch circuit
Switch is three branch switch of hilted broadsword.
7. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 1, which is characterized in that the hilted broadsword multiple branch circuit
Switch is four branch switch of hilted broadsword.
8. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 2, which is characterized in that in each branch
In, the first diode and the respective anode of second diode are connect with switch driving circuit；When the branch is led
When logical, the switch driving circuit which is connected is to the first diode and second diode application in the branch
Reverse bias voltage, so that the first diode and second diode in the branch are reversely ended.
9. high-power higher harmonics hilted broadsword multiple branch circuit switch according to claim 8, which is characterized in that the reverse bias electricity
Pressure is -100V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820675392.5U CN208369550U (en) | 2018-05-08 | 2018-05-08 | High-power higher harmonics hilted broadsword multiple branch circuit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820675392.5U CN208369550U (en) | 2018-05-08 | 2018-05-08 | High-power higher harmonics hilted broadsword multiple branch circuit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208369550U true CN208369550U (en) | 2019-01-11 |
Family
ID=64934018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820675392.5U Active CN208369550U (en) | 2018-05-08 | 2018-05-08 | High-power higher harmonics hilted broadsword multiple branch circuit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208369550U (en) |
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2018
- 2018-05-08 CN CN201820675392.5U patent/CN208369550U/en active Active
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