CN208369544U - A kind of radiofrequency signal precision stepping attenuator circuit - Google Patents
A kind of radiofrequency signal precision stepping attenuator circuit Download PDFInfo
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- CN208369544U CN208369544U CN201821663530.4U CN201821663530U CN208369544U CN 208369544 U CN208369544 U CN 208369544U CN 201821663530 U CN201821663530 U CN 201821663530U CN 208369544 U CN208369544 U CN 208369544U
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- attenuation
- network
- attenuation network
- radiofrequency signal
- attenuator circuit
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Abstract
The utility model provides a kind of radiofrequency signal precision stepping attenuator circuit, including attenuation network more than two-stage, using selection switch connection between adjacent attenuation network, it is switched according to selection, it selects corresponding attenuation network series connection access signal surge damping circuit or does not access signal surge damping circuit, consequently facilitating flexible modulation attenuation network, the attenuation after adjusting attenuation network combination meets the radiofrequency signal target attenuation needed according to input signal and the attenuation of needs.Compared with prior art, the utility model scope of application is wider, and radio frequency signal attenuation precision is higher.
Description
Technical field
The utility model relates to technology for radio frequency field, in particular to a kind of radiofrequency signal precision stepping attenuator circuit.
Background technique
In radio communication and the measurement of radiofrequency signal, generally require signal of communication passing through amplitude adjustment and impedance matching
After be sent into late-class circuit, realize signal stablize transmission.It is in the majority with shaft fixed attenuator at present, it uses under given conditions,
It can not achieve common demands；Step attenuator quantity is few, stepping is big, low precision, expensive, it is also difficult to meet extensive need
It asks.
Utility model content
The utility model provides a kind of radiofrequency signal precision stepping attenuator circuit, has the characteristics that use scope is wider array of.
According to a kind of radiofrequency signal precision stepping attenuator circuit provided by the utility model, including attenuation network more than two-stage
Network is switched using selection switch connection between adjacent attenuation network according to selection, and corresponding attenuation network series connection access letter is selected
Number surge damping circuit does not access signal surge damping circuit.
The attenuation network more than two-stage includes the decaying of the adjustable attenuation network of attenuation and/or fixed attenuation amount
Network.
The attenuation network more than two-stage includes that the adjustable attenuation network of at least one level attenuation and at least one level are fixed
The attenuation network of attenuation.
The attenuation network of at least one level fixed attenuation amount is the attenuation network of the fixed attenuation amount of 0.01dB-0.1dB.
The adjustable attenuation network of at least one level attenuation is first order attenuation network.
Including control relay circuit, it is connected with attenuation network, controls access of the attenuation network to signal surge damping circuit.
Further include mechanical switch control network, adjusts the attenuation of the adjustable attenuation network of attenuation.
The adjustable attenuation network of attenuation includes decaying chip.
Further include central control unit, is connected with control relay circuit and/or the adjustable attenuation network of attenuation.
The attenuation network more than two-stage includes three-level attenuation network, including the adjustable attenuation network of level-one attenuation and
The attenuation network of two-stage fixed attenuation amount.
The attenuation network of the two-stage fixed attenuation amount includes the attenuation network of level-one 0.1dB attenuation network and level-one 0.05dB
Network.
Compared with prior art, the utility model scope of application is wider, and radio frequency signal attenuation precision is higher.
Detailed description of the invention
Fig. 1 is the schematic diagram of a utility model wherein embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Any feature disclosed in this specification (including abstract and attached drawing) unless specifically stated can be equivalent by other
Or the alternative features with similar purpose are replaced.That is, unless specifically stated, each feature is a series of equivalent or class
Like an example in feature.
According to a kind of radiofrequency signal precision stepping attenuator circuit provided by the utility model, as shown in Figure 1, include two-stage with
On attenuation network switched according to selection using selection switch connection between adjacent attenuation network, select corresponding attenuation network
Series connection access signal surge damping circuit does not access signal surge damping circuit, consequently facilitating according to the decaying of input signal and needs
Amount, flexible modulation attenuation network, the attenuation after adjusting attenuation network combination meet the radiofrequency signal target attenuation needed.
Compared with the existing technology, model can be applicable in convenient for realizing the flexible modulation to attenuation on the basis of increasing or decreasing hardware
It encloses bigger.
As a kind of embodiment of the utility model, as shown in Figure 1, the attenuation network more than two-stage includes decaying
Measure the attenuation network of adjustable attenuation network and/or fixed attenuation amount.
As a kind of embodiment of the utility model, as shown in Figure 1, the attenuation network more than two-stage includes at least
The attenuation network of the adjustable attenuation network of level-one attenuation and at least one level fixed attenuation amount, further improves the flexible of adjusting
Property.
As a kind of embodiment of the utility model, as shown in Figure 1, the attenuation network of at least one level fixed attenuation amount
Network is the attenuation network of the fixed attenuation amount of 0.01dB-0.1dB.It is declined using the small stepping fixed attenuation amount of 0.01dB-0.1dB
Subtract network, further improves the accuracy of radio frequency signal attenuation amount adjusting.
As a kind of embodiment of the utility model, as shown in Figure 1, the adjustable attenuation network of at least one level attenuation
Network is first order attenuation network, better assures attenuation accuracy.In the embodiment shown in fig. 1, radiofrequency signal input In is necessary
By the adjustable attenuation network of first order attenuation, but a kind of only embodiment of the utility model, it also can be set and penetrate
Frequency signal In is without the adjustable attenuation network of first order attenuation, is to be easily achieved for those skilled in the art
, the utility model no longer illustrates detailed implementation.
As a kind of embodiment of the utility model, as shown in Figure 1, including control relay circuit, with attenuation network
It is connected, controls access of the attenuation network to signal surge damping circuit.
As a kind of embodiment of the utility model, as shown in Figure 1, further including mechanical switch control network, adjust
The attenuation of the adjustable attenuation network of attenuation.In the embodiment shown in fig. 1, (attenuation is adjustable to decline with chip PE43702
Subtracting network) connected switch control network is that mechanical switch controls network, it can be controlled to adjust and be passed through by mechanical switch
The attenuation of chip PE43702.
As a kind of embodiment of the utility model, as shown in Figure 1, the adjustable attenuation network of the attenuation includes declining
Subtract chip, chip PE43702 as shown in Figure 1.
As a kind of embodiment of the utility model, as shown in Figure 1, further including that central control unit is (specific real at this
Apply in example as STM32 controller), it is connected with control relay circuit and/or the adjustable attenuation network of attenuation.It is shown in Fig. 1
Embodiment in, STM32 controller is connected with control relay circuit and chip PE43702.Pass through declining for chip PE43702
Decrement (stepping) is adjustable as 0.25dB, and also adjustable is 0.5dB, 1dB, 2dB, 4dB, 8dB or 16dB.What input needed declines
Decrement obtains regulation scheme, automatically adjusts after STM32 controller computing module calculates, final to realize decaying output Out
Radiofrequency signal be echo signal.
As a kind of embodiment of the utility model, as shown in Figure 1, the attenuation network more than two-stage includes three-level
Attenuation network, the attenuation network including the adjustable attenuation network of level-one attenuation and two-stage fixed attenuation amount.
As a kind of embodiment of the utility model, as shown in Figure 1, the attenuation network packet of the two-stage fixed attenuation amount
Include the attenuation network of level-one 0.1dB attenuation network and level-one 0.05dB.
Claims (10)
1. a kind of radiofrequency signal precision stepping attenuator circuit, it is characterised in that: including attenuation network more than two-stage, adjacent decaying
It using selection switch connection between network, is switched according to selection, selects corresponding attenuation network series connection access signal surge damping circuit
Or do not access signal surge damping circuit.
2. radiofrequency signal precision stepping attenuator circuit according to claim 1, it is characterised in that: more than the two-stage declining
Subtract the attenuation network that network includes the adjustable attenuation network of attenuation and/or fixed attenuation amount.
3. radiofrequency signal precision stepping attenuator circuit according to claim 1, it is characterised in that: more than the two-stage declining
Subtract the attenuation network that network includes the adjustable attenuation network of at least one level attenuation and at least one level fixed attenuation amount.
4. radiofrequency signal precision stepping attenuator circuit according to claim 3, it is characterised in that: at least one level is fixed
The attenuation network of attenuation is the attenuation network of the fixed attenuation amount of 0.01dB-0.1dB.
5. radiofrequency signal precision stepping attenuator circuit according to claim 3, it is characterised in that: at least one level decaying
Measuring adjustable attenuation network is first order attenuation network.
6. radiofrequency signal precision stepping attenuator circuit according to claim 1, it is characterised in that: control electricity including relay
Road is connected with attenuation network, controls access of the attenuation network to signal surge damping circuit.
7. radiofrequency signal precision stepping attenuator circuit according to claim 2, it is characterised in that: further include mechanical switch
Network is controlled, the attenuation of the adjustable attenuation network of attenuation is adjusted.
8. radiofrequency signal precision stepping attenuator circuit according to claim 2, it is characterised in that: the attenuation is adjustable
Attenuation network includes decaying chip.
9. radiofrequency signal precision stepping attenuator circuit according to claim 1, it is characterised in that: more than the two-stage declining
Subtracting network includes three-level attenuation network, the attenuation network including the adjustable attenuation network of level-one attenuation and two-stage fixed attenuation amount
Network.
10. radiofrequency signal precision stepping attenuator circuit according to claim 9, it is characterised in that: the two-stage fixation declines
The attenuation network of decrement includes the attenuation network of level-one 0.1dB attenuation network and level-one 0.05dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821663530.4U CN208369544U (en) | 2018-10-15 | 2018-10-15 | A kind of radiofrequency signal precision stepping attenuator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821663530.4U CN208369544U (en) | 2018-10-15 | 2018-10-15 | A kind of radiofrequency signal precision stepping attenuator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208369544U true CN208369544U (en) | 2019-01-11 |
Family
ID=64924032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821663530.4U Active CN208369544U (en) | 2018-10-15 | 2018-10-15 | A kind of radiofrequency signal precision stepping attenuator circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN208369544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474256A (en) * | 2018-10-15 | 2019-03-15 | 成都信息工程大学 | A kind of radiofrequency signal precision stepping damped system and attenuator circuit |
-
2018
- 2018-10-15 CN CN201821663530.4U patent/CN208369544U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474256A (en) * | 2018-10-15 | 2019-03-15 | 成都信息工程大学 | A kind of radiofrequency signal precision stepping damped system and attenuator circuit |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221214 Address after: 610000 China (Sichuan) Pilot Free Trade Zone, Chengdu, Sichuan, China No. 1, Wulian Second Road, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu Patentee after: Chengdu Xinhang Technology Co.,Ltd. Address before: 610225, No. 24, Section 1, Xuefu Road, Southwest Economic Development Zone, Shuangliu County, Sichuan, Chengdu Patentee before: CHENGDU University OF INFORMATION TECHNOLOGY |
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| TR01 | Transfer of patent right |