CN101567675B - Radio frequency attenuation control device - Google Patents
Radio frequency attenuation control device Download PDFInfo
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- CN101567675B CN101567675B CN2008103012645A CN200810301264A CN101567675B CN 101567675 B CN101567675 B CN 101567675B CN 2008103012645 A CN2008103012645 A CN 2008103012645A CN 200810301264 A CN200810301264 A CN 200810301264A CN 101567675 B CN101567675 B CN 101567675B
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- radio frequency
- control device
- frequency attenuation
- chip
- attenuation control
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Abstract
The invention provides a radio frequency attenuation control device, which can attenuate the electric potential through remote control of a computer so as to realize the energy attenuation of high-frequency signals, ensure that the response speed is higher than that of an attenuation device with only adjustable switch, and determine the control rights of an attenuation control logic circuit are elastic selection determined by setting of a single chip or an adjustable switch according to whether a control center is connected with the computer through an interface unit. Besides, the computer canperform further regulation and control for the attenuation electric potential set by the adjustable switch. Therefore, the device capable of controlling and regulating the attenuated electric potenti al by the computer has simple control operation and high response speed and can realize more precise attenuation regulation and control for the radio frequency signals by the elasticity capable of freely setting the attenuation electric potential.
Description
Technical field
The present invention is relevant for a kind of radio frequency attenuation control device, and it is fast to refer to that especially a kind of control operation simply reaches reaction speed, and has and can freely set decay current potential flexible radio frequency attenuation control device.
Background technology
In electronic building brick, attenuator is one of basic module commonly used in circuit and the system, and the existence of this attenuator can make circuit production and system debug become more flexibly with convenient.
By the design of manual mode attenuator 2 now, as shown in Figure 2, comprise an input 21, a radio frequency control circuit 22, one manual switch 23, a switch 24 and an output 25 and constitute.It is to utilize this input 21 that a radio-frequency (RF) signal is inputed to this radio frequency control circuit 22, and adjusts the decay action of current potential of this switch 24 by this hand switch 23 with manual control, waits to decay and sends the radio-frequency (RF) signal that has decayed by this output 25 after finishing.Though it can be decayed to radio-frequency (RF) signal, yet this manual mode attenuator 2 is a current potential of adjusting the desire decay with manual method, carries out the manual control setting by the potential scale that defaults in this hand switch 23.Therefore, it not only can't do accurate regulation and control to the decay current potential, and its W-response speed is also for slower, except need expend the more time decay move, also can't do the use of auto-measuring.So it is required when reality is used generally can't to meet the user with the person.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, provide a kind of and can do accurate regulation and control to the decay current potential, and its W-response speed comparatively fast can be carried out the radio frequency attenuation control device of auto-measuring.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of radio frequency attenuation control device comprises:
One input terminal, this input terminal is in order to import a radio-frequency (RF) signal to this radio frequency attenuation control device;
One radio frequency control circuit, this radio frequency control circuit has a receiving terminal and a transmitting terminal, and comprise a variable load assembly, this receiving terminal matches each other the impedance that the input impedance of this input terminal is adjusted into this variable load assembly, and adjust the output impedance of this variable load assembly with this transmitting terminal, adjust the attenuation of this radio-frequency (RF) signal again according to the current potential input of outside by this variable load assembly;
One control centre, this control centre comprise decay control logic circuit, a single-chip and an interface convertor, in order to setting this radio frequency control circuit, and carry out signal attenuation via control command or manual the adjustment;
One rearrangeable switch, the decay control logic circuit of this control centre is controlled in this rearrangeable switch hand adjustment, to the output potential that this variable load assembly is adjusted attenuation of converting by this decay control logic circuit according to the setting of this rearrangeable switch;
One interface unit, this interface unit couples the interface convertor of this control centre, and be connected to a computer again, in order to the output signal that meets this interface unit specification with this interface convertor output, via a interface that should the interface unit specification is exported to this computer, again by this computer at this output signal input control order through this interface convertor to this single-chip; And
One lead-out terminal, this lead-out terminal be in order to receiving the decay radio-frequency (RF) signal of its transmitting terminal of this radio frequency control circuit emission, and this radio-frequency (RF) signal of output in this radio frequency attenuation control device certainly.
When the present invention uses, one radio-frequency (RF) signal enters the receiving terminal of this radio frequency control circuit to this variable load assembly via this input terminal, this moment, whether visual this control centre connected a computer through this interface unit, utilized this rearrangeable switch the decay control logic circuit in this control centre to be adjusted the current potential of desire decay in original mode with manual control with decision; Also or be by the interface convertor that is connected in single-chip in this control centre, the output signal that meets this interface unit specification will be converted to, to export this computer to via this interface unit, set the current potential of desire decay at this single-chip by this computer, and through this interface convertor input control order to this single-chip, make this single-chip send setting signal to this control logic circuit of decaying, and to the output potential that this variable load assembly is adjusted attenuation of converting by this decay control logic circuit, adjust attenuation to this transmitting terminal by this variable load assembly according to the current potential of input and carry out the decay of this radio-frequency (RF) signal, after this lead-out terminal send from this radio frequency attenuation control device.
Compared with prior art, the beneficial effect that the present invention had is: the present invention decays current potential to reach the decay of high-frequency signals energy by computer long distance remote control, can more only have the attenuating device of simple hand switch to come soon, and this computer also can be done further regulation and control to the decay current potential that rearrangeable switch is set; And can be, and then reach radio-frequency (RF) signal is done more accurate decay regulation and control by the elasticity that can freely set the decay current potential.The present invention simultaneously has and can whether connect computer through its interface unit according to its control centre, and determines that its control that decays control logic circuit is the elasticity selection by the setting decision of its single-chip or rearrangeable switch.
Description of drawings
Fig. 1 is a circuit box schematic diagram of the present invention.
Fig. 2 is to have used the circuit block schematic diagram.
Label declaration:
Radio frequency attenuation control device 1
Radio frequency control circuit 12
Receiving terminal 121
Transmitting terminal 122
Decay control logic circuit 131
Single-chip 132
Lead-out terminal 16
Radio frequency control circuit 22
Switch 24
Output 25
Embodiment
Seeing also shown in Figure 1ly, is circuit box schematic diagram of the present invention.As shown in the figure: the present invention is a kind of radio frequency attenuation control device, and this radio frequency attenuation control device 1 includes an input terminal 11, a radio frequency control circuit 12, a control centre 13, a rearrangeable switch 14, an interface unit 15 and a lead-out terminal 16 at least and constitutes.
This input terminal 11 is in order to import a radio-frequency (RF) signal to this radio frequency attenuation control device 1.
These radio frequency control circuit 12 cordings have a receiving terminal 121 and a transmitting terminal 122, and comprise a variable load assembly 123.This receiving terminal 121 is to be adjusted into this variable load assembly 123 in order to the input impedance with this radio-frequency (RF) signal to match each other, this transmitting terminal 122 includes an impedance matching circuit, in order to the output impedance of adjusting this variable load assembly 123 is radio frequencies such as 50 ohm or 75 ohm normal impedances commonly used, this variable load assembly 123 comprises a decay gate array, can adjust the attenuation of this radio-frequency (RF) signal according to the current potential input of outside, wherein, this variable load assembly 123 can be made of chip or traditional resistance, electric capacity and inductance.
This control centre 13 comprises decay control logic circuit 131, a single-chip 132 and an interface convertor 133, in order to setting this radio frequency control circuit 12, and carries out signal attenuation via control command or manual the adjustment.This decay control logic circuit 131 is to the output potential that this variable load assembly 123 is adjusted attenuation of to convert according to the setting signal that this single-chip 132 is sent, wherein, but this decay control logic circuit 131 is to can be a scene program gate array (Field Programmable Gate Array, FPGA) chip or other simple logical circuit; This single-chip 132 is that (Micro Controller Unit MCU) constitutes, and this single-chip 132 links these interface convertors 133 and via interface unit 15 and a computer 17 communications by a microcontroller.
This rearrangeable switch 14 can be thumb-acting switch or rotary switch, but the decay control logic circuit 131 of this control centre 13 is controlled in hand adjustment, to the output potential that this variable load assembly 123 is adjusted attenuations of converting by this decay control logic circuit 131 according to the setting of this rearrangeable switch 14.
This interface unit 15 couples the interface convertor 133 of this control centre 13, and be connected to this computer 17 again, in order to the output signal that meets these interface unit 15 specifications with these interface convertor 133 outputs, via a interface that should interface unit 15 specifications is exported to this computer 17, again by this computer 17 at this output signal import a control command through this interface convertor 133 to this single-chip 132, wherein, this interface unit 15 can be pcmcia interface, CardBus interface, Express Card interface or USB interface.
This lead-out terminal 16 is in order to receiving the decay radio-frequency (RF) signal of this radio frequency control circuit 12 its transmitting terminals 122 emissions, and this radio-frequency (RF) signal of output in this radio frequency attenuation control device 1 certainly.The above is to constitute a brand-new radio frequency attenuation control device 1.
When the present invention in when utilization, be can be according to having when this control centre 13 when connecting this computer 17 through this interface unit 15, the control system of this decay control logic circuit 131 is determined by this single-chip 132; Otherwise when this control centre 13 did not connect this computer 17 through this interface unit 15, the control of this decay control logic circuit 131 was then determined by the setting of this rearrangeable switch 14.At first, this radio-frequency (RF) signal enters the receiving terminal 121 of this radio frequency control circuit 12 to this variable load assembly 131 via this input terminal 11, this moment, whether visual this control centre 13 connected this computer 17 through this interface unit 15, and decision utilizes this rearrangeable switch 14 this decay control logic circuit 131 to be adjusted the current potential of desire decay in original mode with manual control; Also or can be by the interface convertor 133 that is connected in this single-chip 132, the output signal that meets these interface unit 15 specifications will be converted to, to export this computer 17 to via this interface unit 15, set the current potential of desire decay at this single-chip 132 by this computer 17, and through these interface convertor 133 input control orders to this single-chip 132, make this single-chip 132 send setting signal to this control logic circuit 131 of decaying, and to the output potential that this variable load assembly 123 is adjusted attenuations of converting by this decay control logic circuit 131, adjust attenuation to this transmitting terminal 122 by this variable load assembly 123 according to the current potential of input and carry out the decay of this radio-frequency (RF) signal, after this lead-out terminal 16 send from this radio frequency attenuation control device 1, wherein, but the also decay current potential set of this rearrangeable switch of Remote 14 of this computer 17.
By this, radio frequency attenuation control device of the present invention, not only can be by this computer long distance remote control decay current potential to reach the decay of high-frequency signals energy, make reaction speed can more only have the attenuating device of simple rearrangeable switch to come soon, and, also have and whether to connect this computer according to this control centre, and determine its control system of this decay control logic circuit to select by the elasticity of the setting decision of this single-chip or this rearrangeable switch through this interface unit.Therefore, this kind can be by the device of computer control adjustment decay current potential, and it is fast that not only control operation simply reaches reaction speed, and can be by the elasticity that can freely set the decay current potential, and then reaches to the radio-frequency (RF) signal do more accurate decay and regulate and control.
In addition, input terminal 11 of the present invention can be coaxial fitting and this radio frequency control circuit can be made of integrated circuit.And this single-chip 132 can be made of following mode: can by Digital Logical Circuits and numeral in proper order circuit constituted, can be constituted by integrated circuit package, can be by the AND logic module, OR logic module and NOT logic module constitute, can be constituted by D type flip-flop and memory subassembly, can be constituted by flip-flop and logic module and memory subassembly, can be constituted by diode assembly, can be constituted by transistor component, can be constituted by the MOS assembly, can be constituted by the BJT assembly, can be constituted by the FET assembly, can be constituted or can be by cmos component by resistance, electric capacity or Inductive component constitute.
And this radio frequency control circuit 12 can be integrated into an integrated circuit with control centre 13, and this control centre 13 can be made up of resistance, electric capacity and transistor.
In sum, the present invention is a kind of radio frequency attenuation control device, can effectively improve the various shortcoming of usefulness, can decay current potential to reach the decay of high-frequency signals energy by computer long distance remote control, therefore reaction speed can more only have the attenuating device of simple rearrangeable switch to come soon, and this computer also can be done further regulation and control to the decay current potential that this rearrangeable switch is set, therefore, this kind can be by the device of computer control adjustment decay current potential, it is fast that not only control operation simply reaches reaction speed, and can be by the elasticity that can freely set the decay current potential, reach radio-frequency (RF) signal is done more accurate decay regulation and control, and then make the generation of the present invention can be more progressive, more practical, more meet user institute palpus, really met the application for a patent for invention important document, the whence proposes patent application in accordance with the law.
Claims (29)
1. radio frequency attenuation control device is characterized in that comprising:
One input terminal, this input terminal is in order to import a radio-frequency (RF) signal to this radio frequency attenuation control device;
One radio frequency control circuit, this radio frequency control circuit has a receiving terminal and a transmitting terminal, and comprise a variable load assembly, this receiving terminal matches each other the impedance that the input impedance of this input terminal is adjusted into this variable load assembly, and adjust the output impedance of this variable load assembly with this transmitting terminal, adjust the attenuation of this radio-frequency (RF) signal again according to the current potential input of outside by this variable load assembly;
One control centre, this control centre comprise decay control logic circuit, a single-chip and an interface convertor, in order to setting this radio frequency control circuit, and carry out signal attenuation via control command or manual the adjustment;
One rearrangeable switch, the decay control logic circuit of this control centre is controlled in this rearrangeable switch hand adjustment, to the output potential that this variable load assembly is adjusted attenuation of converting by this decay control logic circuit according to the setting of this rearrangeable switch;
One interface unit, this interface unit couples the interface convertor of this control centre, and be connected to a computer again, in order to the output signal that meets this interface unit specification with this interface convertor output, via a interface that should the interface unit specification is exported to this computer, again by this computer at this output signal input control order through this interface convertor to this single-chip; And
One lead-out terminal, this lead-out terminal be in order to receiving the decay radio-frequency (RF) signal of its transmitting terminal of this radio frequency control circuit emission, and this radio-frequency (RF) signal of output in this radio frequency attenuation control device certainly.
2. radio frequency attenuation control device according to claim 1 is characterized in that this transmitting terminal comprises an impedance matching circuit.
3. radio frequency attenuation control device according to claim 1 is characterized in that, the output impedance of this transmitting terminal is normal impedance with 50 ohm.
4. radio frequency attenuation control device according to claim 1 is characterized in that, the output impedance of this transmitting terminal is normal impedance with 75 ohm.
5. radio frequency attenuation control device according to claim 1 is characterized in that, this variable load assembly comprises a decay gate array.
6. radio frequency attenuation control device according to claim 1 is characterized in that, this variable load assembly is made of chip or resistance, electric capacity and inductance.
7. radio frequency attenuation control device according to claim 1 is characterized in that, the setting signal that this decay control logic circuit is sent according to this single-chip to the output potential that this variable load assembly is adjusted attenuation of converting.
8. radio frequency attenuation control device according to claim 1 is characterized in that, but this decay control logic circuit is a scene program gate array chip.
9. radio frequency attenuation control device according to claim 1 is characterized in that this single-chip is made of a microcontroller.
10. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip links this interface convertor and links up via this interface unit and this computer.
11. radio frequency attenuation control device according to claim 1 is characterized in that, this rearrangeable switch is a thumb-acting switch.
12. radio frequency attenuation control device according to claim 1 is characterized in that, this rearrangeable switch is a rotary switch.
13. radio frequency attenuation control device according to claim 1 is characterized in that, this interface unit is pcmcia interface, CardBus interface, Express Card interface or USB interface.
14. radio frequency attenuation control device according to claim 1 is characterized in that, the control of this decay control logic circuit is by this single-chip decision.
15. radio frequency attenuation control device according to claim 1 is characterized in that, the control of this decay control logic circuit is by the setting decision of this rearrangeable switch.
16. radio frequency attenuation control device according to claim 1 is characterized in that, this input terminal is coaxial fitting.
17. radio frequency attenuation control device according to claim 1 is characterized in that, this radio frequency control circuit is made of integrated circuit.
18. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip by Digital Logical Circuits and numeral in proper order circuit constituted.
19. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of integrated circuit package.
20. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of AND logic module, OR logic module and NOT logic module.
21. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of D type flip-flop and memory subassembly.
22. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of flip-flop and logic module and memory subassembly.
23. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of transistor component.
24. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of the MOS assembly.
25. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of the BJT assembly.
26. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip can be made of the FET assembly.
27. radio frequency attenuation control device according to claim 1 is characterized in that, this single-chip is made of cmos component.
28. radio frequency attenuation control device according to claim 1 is characterized in that, this radio frequency control circuit and control centre are an integrated circuit.
29. radio frequency attenuation control device according to claim 1 is characterized in that, this control centre is made up of resistance, electric capacity and transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103012645A CN101567675B (en) | 2008-04-23 | 2008-04-23 | Radio frequency attenuation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103012645A CN101567675B (en) | 2008-04-23 | 2008-04-23 | Radio frequency attenuation control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101567675A CN101567675A (en) | 2009-10-28 |
| CN101567675B true CN101567675B (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103012645A Expired - Fee Related CN101567675B (en) | 2008-04-23 | 2008-04-23 | Radio frequency attenuation control device |
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| CN (1) | CN101567675B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279378B (en) * | 2013-06-13 | 2016-11-02 | 安徽华东光电技术研究所 | Control method based on SAR radar echo signal simulator Radio Frequency Subsystem |
| CN104348445A (en) * | 2013-07-26 | 2015-02-11 | 中兴通讯股份有限公司 | Attenuation device, system and attenuation method |
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- 2008-04-23 CN CN2008103012645A patent/CN101567675B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101567675A (en) | 2009-10-28 |
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Granted publication date: 20110720 Termination date: 20190423 |
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