CN208045663U - A kind of adjustable attenuator of broadband power - Google Patents
A kind of adjustable attenuator of broadband power Download PDFInfo
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- CN208045663U CN208045663U CN201721715952.7U CN201721715952U CN208045663U CN 208045663 U CN208045663 U CN 208045663U CN 201721715952 U CN201721715952 U CN 201721715952U CN 208045663 U CN208045663 U CN 208045663U
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Abstract
The utility model discloses a kind of adjustable attenuator of broadband power, including set gradually from top to bottom floor, dielectric-slab, triangle shaped microstrip is laid on the dielectric-slab, the triangle shaped microstrip center is provided with circular hole；Input interface, output interface, ground connection micro-strip are connected separately on three sides of the triangle shaped microstrip；And it is both provided with resistance between input interface, output interface, ground connection micro-strip and triangle shaped microstrip.Attenuator with above structure, the attenuation of power are can arbitrarily to be set according to its impedance value, and such attenuator can work normally in broadband.If in addition, in circuit without power attenuation when, attenuator can be equivalent to a micro-strip access, the approach of realization is as follows：The impedance of the resistance being connect with input/output interface zero ohms replaces, and is grounded micro-strip and does not take over that resistance can be realized.
Description
Technical field
The utility model is related to a kind of attenuators.
Background technology
Attenuator be in specified frequency range, it is a kind of to introduce predetermined power decaying circuit.Generally to be drawn
The ohmage of the decibels and its characteristic impedance that enter decaying is indicated.Attenuator is widely used in cable television system so as to full
Requirement of the sufficient multiport to level.Such as the control of the input, output end level of amplifier, the control of branch off attenuation amount.Decaying
Device has two kinds of passive attenuator and active attenuator.Active attenuator is combined into variable attenuator with the matching of other temperature-sensitive elements,
Device is in amplifier in automatic gain or slope control circuit.Passive attenuator has fixed attenuator and adjustable damping
Device.
Usually, in the circuit of adjustment watt level, specific attenuator is to determine the decaying size of circuit power
, it cannot arbitrarily change attenuation, therefore the operation strategies of attenuator are just subject to certain restrictions.
Utility model content
In view of this, the utility model provides a kind of adjustable attenuator of broadband power, realize that power can in broadband
It adjusts, i.e. a circuit is after the attenuator, and output power can reduce m times relative to input power, and wherein Coefficient m can basis
It needs to be changed, which is determined by each resistance value in attenuator.
In order to solve the above technical problems, the technical solution of the utility model is to use a kind of adjustable decaying of broadband power
Device, including set gradually from top to bottom floor, dielectric-slab, be laid with triangle shaped microstrip, the triangle on the dielectric-slab
Micro-strip center is provided with circular hole；Be connected separately on three sides of the triangle shaped microstrip input interface, output interface, ground connection it is micro-
Band；And it is both provided with resistance between input interface, output interface, ground connection micro-strip and triangle shaped microstrip.
As an improvement the triangle shaped microstrip is equilateral triangle, the input interface, output interface, ground connection are micro-
Band is arranged on the perpendicular bisector extended line of triangle shaped microstrip.
As a kind of further improvement, the ground connection micro-strip is square, and center is provided with circular hole.
As another further improvement, the input interface and output interface are connected by connecting micro-strip with resistance
It connects.
As an improvement with the resistance that input interface connects and identical as the resistance value of resistance of output interface connection.
As an improvement the floor, triangle shaped microstrip, ground connection micro-strip, connection micro-strip thickness be 19um, material is
Copper；The media plate thickness are 127um, and material is Rogers 5880.
The utility model is beneficial in that：Attenuator with above structure, the attenuation of power is can root
It is arbitrarily set according to its impedance value, and such attenuator can work normally in broadband.If in addition, without work(in circuit
When rate decays, attenuator can be equivalent to a micro-strip access, the approach of realization is as follows：The resistance being connect with input/output interface
It is replaced with the impedance of zero ohms, and is grounded micro-strip and does not take over that resistance can be realized.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the return loss of the utility model.
Fig. 3 is the insertion loss of the utility model.
It is marked in figure：2 dielectric-slabs, 3 triangle shaped microstrips, 4 connection micro-strips, 5-7 resistance, 8 ground connection micro-strips, 9 input interfaces, 10
Output interface.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to specific implementation
The utility model is described in further detail for mode.
Embodiment 1 is as shown in Figure 1, be the adjustable attenuator of broadband power that centre frequency is 20GHz, including from top to bottom
The floor that sets gradually, dielectric-slab 2 are laid with triangle shaped microstrip 3 on the dielectric-slab 2, and the center of triangle shaped microstrip 3 is provided with
Circular hole；Input interface 9, output interface 10, ground connection micro-strip 8 are connected separately on three sides of the triangle shaped microstrip 3；And it is defeated
It is respectively arranged with resistance 5, resistance 6, resistance 7 between incoming interface 9, output interface 10, ground connection micro-strip 8 and triangle shaped microstrip 3.Triangle
Shaped microstrip 3 is equilateral triangle, and the input interface 9, output interface 10, ground connection micro-strip 8 are arranged at hanging down for triangle shaped microstrip 3
On straight bisector extended line.Ground connection micro-strip 8 is square, and center is provided with circular hole.Input interface and output interface pass through company
Micro-strip 4 is connect to connect with resistance 5, resistance 7.The electricity of the resistance 5 being connect with input interface 9 and the resistance 6 being connect with output interface 10
Resistance value is identical.Floor, triangle shaped microstrip 3, ground connection micro-strip 8, connection 4 thickness of micro-strip are 19um, and material is copper；The dielectric-slab
Thick 2 degree are 127um, and material is Rogers 5880.The size of resistance determines by impedance value, the relative dielectric constant and phase of material
All it is 1 to magnetic conductivity, conductivity 434.78S/m.
Modeling and simulation is carried out to attenuator by HFSS softwares, obtains the simulation result of attenuator.Figure is second is that the decaying
The S11 of device, i.e. return loss, it can be seen that in frequency band between 10GHz-33GHz, return loss is below -12dB, meets electricity
Road design requirement；Figure three is the S21 (i.e. insertion loss) of the attenuator, that is, the attenuation of power (uses decibel in circuit
(dB) indicate), it can be seen that in frequency band between 10GHz-33GHz, attenuation is in -6dB or so, i.e., output power is defeated at this time
Enter a quarter of power.If changing the resistance value of resistance 1,2 and 3, so that it may optionally to change the attenuation of power, to real
Now to the adjustable pad design of broadband power.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the scope of protection of the utility model should be subject to claim limited range.For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of adjustable attenuator of broadband power, including set gradually from top to bottom floor, dielectric-slab, it is characterised in that：
Triangle shaped microstrip is laid on the dielectric-slab, the triangle shaped microstrip center is provided with circular hole；Three of the triangle shaped microstrip
Input interface, output interface, ground connection micro-strip are connected separately on side；And input interface, output interface, ground connection micro-strip and triangle
Resistance is both provided between shaped microstrip.
2. the adjustable attenuator of a kind of broadband power according to claim 1, it is characterised in that：The triangle shaped microstrip is
Equilateral triangle, the input interface, output interface, ground connection micro-strip are arranged at the perpendicular bisector extended line of triangle shaped microstrip
On.
3. the adjustable attenuator of a kind of broadband power according to claim 1, it is characterised in that：The ground connection micro-strip is just
Rectangular, center is provided with circular hole.
4. the adjustable attenuator of a kind of broadband power according to claim 1, it is characterised in that：The input interface and defeated
Outgoing interface is connect by connecting micro-strip with resistance.
5. the adjustable attenuator of a kind of broadband power according to claim 1, it is characterised in that：It is connect with input interface
Resistance and with output interface connection the resistance value of resistance it is identical.
6. the adjustable attenuator of a kind of broadband power according to claim 1, it is characterised in that：The floor, triangle
Micro-strip, ground connection micro-strip, connection micro-strip thickness are 19um, and material is copper；The media plate thickness are 127um, and material is
Rogers 5880。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721715952.7U CN208045663U (en) | 2017-12-08 | 2017-12-08 | A kind of adjustable attenuator of broadband power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721715952.7U CN208045663U (en) | 2017-12-08 | 2017-12-08 | A kind of adjustable attenuator of broadband power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208045663U true CN208045663U (en) | 2018-11-02 |
Family
ID=63959061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721715952.7U Active CN208045663U (en) | 2017-12-08 | 2017-12-08 | A kind of adjustable attenuator of broadband power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208045663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464973A (en) * | 2022-01-19 | 2022-05-10 | 电子科技大学 | Reconfigurable filter attenuator based on continuously adjustable center frequency |
-
2017
- 2017-12-08 CN CN201721715952.7U patent/CN208045663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464973A (en) * | 2022-01-19 | 2022-05-10 | 电子科技大学 | Reconfigurable filter attenuator based on continuously adjustable center frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220210 Address after: 1 / F, 144 Tianshun Road, hi tech Zone, Chengdu, Sichuan 610000 Patentee after: CHENGDU ZHONGYU MICROCHIP TECHNOLOGY CO.,LTD. Address before: Building 23, Science Park, University of Electronic Science and technology, No.1 Gongxing Avenue, Gongxing Town, Shuangliu District, Chengdu, Sichuan 610213 Patentee before: CHENGDU JULI ZHONGYU TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |