CN201550086U - Attenuator - Google Patents
Attenuator Download PDFInfo
- Publication number
- CN201550086U CN201550086U CN2009202388567U CN200920238856U CN201550086U CN 201550086 U CN201550086 U CN 201550086U CN 2009202388567 U CN2009202388567 U CN 2009202388567U CN 200920238856 U CN200920238856 U CN 200920238856U CN 201550086 U CN201550086 U CN 201550086U
- Authority
- CN
- China
- Prior art keywords
- attenuator
- resistance
- control circuit
- switch
- programmable logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Non-Reversible Transmitting Devices (AREA)
Abstract
The utility model relates to an attenuator, which is applied in the fields of microwaves, radar and the like. The attenuator comprises a shell, wherein a programmable logic control circuit (PLD) and at least one groups of attenuator circuits are arranged in the shell; in each attenuator circuit, a resistance (R1) and a switch (S1) are connected between the input end and the output end in parallel, and the input end and the output end are respectively grounded by a resistance (R2 or R3) that is connected in series; and the programmable logic control circuit is connected with each switch and is used for controlling each switch respectively. The attenuator provided by the utility model can be realized by adopting the modern electronic technique, so as to be realized easily and adjusted and controlled easily; the attenuator can adapt to the requirements of various models, and the attenuation can be set as required, thereby greatly meeting the requirements of the fields of the microwaves, the radar and the like; the shell can be made of various materials, thereby adapting to the requirements of various environments; the programmable logic control circuit is adopted for control and adjustment, and the use of the programmable logic control circuit is convenient.
Description
Technical field
The utility model relates to a kind of attenuator, and particularly a kind of step attenuator can be applied to systems such as communication, electronics, microwave, radio station, radar.
Background technology
Attenuator is a kind of device that is used to introduce a predetermined decay in the specified frequency scope.Existing attenuator mostly is a certain specific model, for example needs to reach the attenuator of decay 2dB in a certain communication, then adopts the attenuator of this model to get final product, and all is immutable, nonadjustable attenuator.Along with development of technology, this fixing attenuator more and more can not be satisfied the demand.1. the restriction of model (being attenuation) is arranged, can't be general; 2. when using, when needing a plurality of different model, just the arrestment that need not stop, frequent replacing model then very bother, and have delayed a large amount of time, and operating efficiency is low.
Summary of the invention
At above-mentioned problem, the utility model provides a kind of attenuator that can regulate that utilizes modern electronic technology to realize, can satisfy the needs in various fields such as present microwave, radio station, radar.
The utility model provides a kind of attenuator, comprise shell, be provided with a FPGA (Field Programmable Gate Array) control circuit PLD and at least one group of attenuator circuit in the enclosure, wherein each group attenuator circuit is such: be parallel with a resistance R 1 and a switch S 1 between input and the output, and each input and output are all respectively by resistance R 2 or R3 and a switch S 2 or a S3 ground connection of connecting; The FPGA (Field Programmable Gate Array) control circuit connects each switch of control respectively.
Like this, control the closure and the unlatching of each switch, can reach the purpose of regulating attenuation by the FPGA (Field Programmable Gate Array) control circuit.
And each group attenuator circuit can be realized decay, and the difference according to the size of resistance value can also realize different attenuations.
Preferably, above-mentioned attenuator circuit is set to 4 groups, and the output of each group and the input of next group are once connected, and constitutes each combination, and is subjected to the control of FPGA (Field Programmable Gate Array) control circuit.
Preferably, above-mentioned resistance can be fixed resistance or adjustable resistance, if be fixed resistance, corresponding resistance value is set as required then, and this is to realize easily; If be adjustable resistance, then resistance can be provided with by-pass cock or be subjected to the control of FPGA (Field Programmable Gate Array) control circuit, realizes the adjusting of resistance value, and this also is to realize easily.
The attenuator that the utility model provides utilizes modern electronic technology to realize, be easy to realize, be easy to regulate control, the needs that can adapt to various models, its attenuation can be provided with as required, has satisfied the demand in fields such as microwave, radar greatly, its shell can adopt various materials, can adapt to all-environment demand, adopt FPGA (Field Programmable Gate Array) control circuit regulating and controlling, it is easy to use.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Embodiment with indefiniteness further explains, illustrates the technical program below.
A kind of attenuator, comprise shell, as shown in Figure 1, be provided with a FPGA (Field Programmable Gate Array) control circuit PLD and four groups of attenuator circuits in the enclosure, wherein first group of attenuator circuit is such: be parallel with a resistance R 1 and a switch S 1 between input and the output, and each input and output are all respectively by resistance R 2 or R3 and a switch S 2 or a S3 ground connection of connecting; Other three groups also is like this.The FPGA (Field Programmable Gate Array) control circuit connects each switch of control respectively.
During application, with first group be example, when FPGA (Field Programmable Gate Array) control circuit control switch S1 disconnection, S2, S3 are closed, be a π type attenuator, can obtain an attenuation, and when switch S 1 closure, when S2, S3 disconnect, attenuation is 0dB, can realize the variation of attenuation with this.And be provided with four groups of attenuator circuits, and the level Four attenuator can be set, each level can be separate, and attenuation can freely be set, and also can be provided with according to a certain stepping amount, and this is to realize easily.
Claims (3)
1. attenuator, comprise shell, it is characterized in that: be provided with a FPGA (Field Programmable Gate Array) control circuit (PLD) and an at least one group of attenuator circuit in the enclosure, wherein each group attenuator circuit is such: be parallel with a resistance (R1) and a switch (S1) between input and the output, and each input and output are all respectively by a resistance (R2 or R3) and switch (S2 or S3) ground connection of connecting; The FPGA (Field Programmable Gate Array) control circuit connects each switch of control respectively.
2. attenuator according to claim 1 is characterized in that: described attenuator circuit is 4 groups, and each group output and next group input once are connected in series.
3. attenuator according to claim 1 and 2 is characterized in that: described resistance is fixed resistance or adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202388567U CN201550086U (en) | 2009-09-29 | 2009-09-29 | Attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202388567U CN201550086U (en) | 2009-09-29 | 2009-09-29 | Attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201550086U true CN201550086U (en) | 2010-08-11 |
Family
ID=42605271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202388567U Expired - Fee Related CN201550086U (en) | 2009-09-29 | 2009-09-29 | Attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201550086U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751951A (en) * | 2012-07-03 | 2012-10-24 | 复旦大学 | Resistance voltage division attenuator |
| CN102820510A (en) * | 2012-08-21 | 2012-12-12 | 北京琨奇电子系统有限公司 | Active multi-path power splitter |
| CN105429656A (en) * | 2015-10-20 | 2016-03-23 | 广州海格通信集团股份有限公司 | Signal processing device based on shortwave broadband reception demodulation front end |
-
2009
- 2009-09-29 CN CN2009202388567U patent/CN201550086U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751951A (en) * | 2012-07-03 | 2012-10-24 | 复旦大学 | Resistance voltage division attenuator |
| CN102820510A (en) * | 2012-08-21 | 2012-12-12 | 北京琨奇电子系统有限公司 | Active multi-path power splitter |
| CN105429656A (en) * | 2015-10-20 | 2016-03-23 | 广州海格通信集团股份有限公司 | Signal processing device based on shortwave broadband reception demodulation front end |
| CN105429656B (en) * | 2015-10-20 | 2018-11-20 | 广州海格通信集团股份有限公司 | The signal processing apparatus of demodulation front end is received based on short wave bandwidth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103312355B (en) | Adjustable duplexer system | |
| CN101699691B (en) | Multi-order multi-parameter adjustable electrical load device | |
| CN201550086U (en) | Attenuator | |
| CN104584425A (en) | Programmable-gain amplifier | |
| CN106207320A (en) | Phase shifter and antenna | |
| CN108023572A (en) | A kind of low difference CMOS difference numerical-control attenuators | |
| CN206003575U (en) | Resistance device and electronic equipment | |
| CN106877002A (en) | A kind of polarizing control network of phase and power ratio continuously adjustabe | |
| CN103746680B (en) | Radio frequency switch | |
| CN110324023A (en) | A kind of low phase error digital pad of ultra wide band based on parallel capacitive compensation | |
| CN103905028A (en) | Signal receiver and signal transmitting device | |
| CN104852715A (en) | Radio frequency antenna switch | |
| CN113794463A (en) | Novel single-chip numerical control attenuator chip | |
| WO2024108893A1 (en) | Power-on and power-off sequence control circuit | |
| CN107994884A (en) | A kind of numerical-control attenuator with high heat dispersion | |
| CN207382273U (en) | A kind of numerical-control attenuator with high heat dispersion | |
| CN205864378U (en) | A kind of Ku wave band numerical-control attenuator | |
| CN101183857A (en) | Sound volume control method, system and electric appliance | |
| CN114024120A (en) | Coupler and debugging circuit and communication equipment thereof | |
| US20120139603A1 (en) | Tunable delay cell apparatus | |
| CN206894364U (en) | capacitance tuning circuit | |
| CN203368438U (en) | Level conversion device for bidirectional communication and intelligent TV set | |
| CN201018485Y (en) | Multiplexer | |
| CN206742975U (en) | Inductance tuning circuit | |
| CN201303037Y (en) | Program-controlled variable microwave attenuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20100929 |