CN1851977A - Microwave numerical-control attenuator control method and apparatus - Google Patents
Microwave numerical-control attenuator control method and apparatus Download PDFInfo
- Publication number
- CN1851977A CN1851977A CN 200610039347 CN200610039347A CN1851977A CN 1851977 A CN1851977 A CN 1851977A CN 200610039347 CN200610039347 CN 200610039347 CN 200610039347 A CN200610039347 A CN 200610039347A CN 1851977 A CN1851977 A CN 1851977A
- Authority
- CN
- China
- Prior art keywords
- eprom
- temperature
- amplifier
- attenuation
- current
- 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.)
- Pending
Links
Images
Landscapes
- Non-Reversible Transmitting Devices (AREA)
- Networks Using Active Elements (AREA)
Abstract
This invention relates to a control method and a device for microwave digital control attenuators, in which, the method includes: 1, writing the corresponding values of attenuation volumes at different temperature spheres in EPROM, 2, a single-chip processor reads the current temperature value in every other period of time, outputs an address modified code to be compared with values in the temperature spheres recorded by EPROM, if it is in the same temperature sphere with the last time, then the address code is not changed, if not, it jumps to the address code corresponding to a new temperature sphere and modifies the output data of the EPROM, 3, driving the current circuit after the D/A conversion, providing related current so as to modify the attenuation volume of the attenuator, the temperature sensor in the device outputs the detected signals to the EPROM by the single-chip processor to be transmitted to the current drive circuit after the D/A conversion, which includes an operational; amplifier and a resistor, the output of the D/A converter is connected with the input of the operational end and the output is connected with the analog attenuation circuit.
Description
Technical field
The present invention relates to the microwave numerical-control attenuator control field of the high-frequency microwave active device and the system temperature characteristic compensation of electronics and communication, relate in particular to a kind of control method and device of microwave numerical-control attenuator.
Background technology
The at present domestic numerical-control attenuator ubiquity control precision and the linearity not enough (generally about error 3dB), adaptive temperature scope are little (generally at-40 ℃～+ 70 ℃, just can not be suitable for substantially on the military products like this) and control narrow dynamic range problems such as (generally in 0～40dB scopes), the domestic numerical-control attenuator that is operated in the microwave radio scope (to 18GHz) is generally switch form, many employings 5 or 6 controls, attenuated error changes between 0.5～2dB.The numerical-control attenuator assembly technology complexity of this class, the insertion loss is big, the stepping minimum is 1dB, can not satisfy the requirement of some application scenario 0.5dB attenuation accuracy, and the control of attenuated error can not be satisfied higher requirement (less than 0.5dB) in-55 ℃～+ 85 ℃ temperature ranges.
Numerical-control attenuator is to come the Control Driver output current by the input parallel data, thereby the attenuation of control attenuator, the temperature-compensating design of at present traditional driver is to utilize the feedback resistance of thermistor as the output stage amplifier, make the multiplication factor of amplifier vary with temperature and change, but this compensation method has obvious defects: the one, under specified temp, for all attenuations, the driver current percentage change is the same, and attenuation percentage change at different levels is different; The 2nd, because attenuation is non-linear with the variation of temperature amount, be difficult to this curve of fine simulation by the thermistor network.
Summary of the invention
In order to improve the precision of under broadband, wide working temperature, great dynamic range situation, microwave, radiofrequency signal amplitude being controlled, the invention provides a kind of method and device of microwave numerical-control attenuator control.Method of the present invention realizes in the following way:
Microwave numerical-control attenuator control method, its feature comprises the steps:
1) attenuation pairing value in each temperature range is write EPROM;
2) single-chip microcomputer reads current temperature value one time every a time interval, value in each temperature range of OPADD correcting code and EPROM record relatively, if with a preceding temperature in same temperature ranges stated, then address code remains unchanged, if it is different, then jump to the pairing address code of new temperature range, revise the dateout of EPROM;
3) pass through steering D/A conversion afterwards through the drive current circuit, thereby provide corresponding electric current to revise the attenuation of attenuator.
The time interval that single-chip microcomputer reads a current temperature value is 1 second.
The value that writes EPROM is the maximum of the variable quantity of attenuation in the temperature range of interval; Temperature range is 10 ℃ at interval.
Single-chip microcomputer is exported 4 bit address correcting codes after reading current temperature value; The address correcting code conversion of per 10 ℃ of single-chip microcomputers output once.
Adopting a kind of device of the controlled microwave numerical-control attenuator of the inventive method, is to be achieved by the following scheme:
Comprise signal hop, current drives part, it is characterized in that: other is provided with the signal hop and comprises temperature sensor, single-chip microcomputer, EPROM, D/A, temperature sensor is handled the signal that detects and is outputed to EPROM through single-chip microcomputer, be sent to current driving circuit through D/A through signal afterwards; Current driving circuit comprises amplifier, resistance, and the output of D/A connects the input of amplifier, and the output of amplifier connects integrated analog attenuation circuit.
Amplifier is made up of the secondary amplifier, and the output of D/A connects the input of one-level amplifier, and the output of one-level amplifier connects the input of secondary amplifier, and the output of secondary amplifier connects integrated analog attenuation circuit.
Description of drawings
Fig. 1 is a controlled microwave numerical-control attenuator device circuit block diagram
Fig. 2 is a controlled microwave numerical-control attenuator device circuit schematic diagram
Embodiment
Numerical-control attenuator is to come the Control Driver output current by the input parallel data, thus the attenuation of control attenuator.The current temperature value that this project uses the single-chip microcomputer reading temperature sensor to send, according to the dateout of Current Temperatures OPADD sign indicating number correction EPROM, thus and then control output current correction attenuation.General military device temperature scope is-55 ℃～85 ℃, as long as we write EPROM with attenuation pairing value in each temperature range, just can realize the automatic correction of attenuation, the full temperature variable quantity of attenuation is exactly the maximum of the variable quantity of interval temperature range (10 degree) attenuation.Single-chip microcomputer read one time current temperature value every one second, if with a preceding temperature in same temperature ranges stated, then address code remains unchanged, if different, then jumps to the pairing address code of new temperature range.Research and design 7 parallel-by-bit digital control circuits, with computer data control and D/A transform method, adopt linear deviation correcting technology (numerical-control attenuator is non-linear in essence) to make numerical-control attenuator controlled in 0～64dB scope internal linear, linearity error is in 0.5dB, and promptly the error of the actual attenuation amount of attenuator and theoretical value is in 0.5dB.Can expand to 8 controls on this basis, realize the 0.25dB stepping, further improve control precision.The linearity error of product is the stepping quantization error, analog linearity can not occur and correct the situation of time error with attenuation change.
Common low frequency integrated circuit generally is in the same place active doing with passive device on semiconductor chips such as Si or GaAs, when the component units circuit, directly is welded on the pcb board and gets final product.It is complicated that microwave integrated circuit is then wanted:
Consider effects of distribution parameters, microwave integrated circuit is general carries out active circuit (chip) earlier on semiconductor chips such as GaAs, InP, InGaAs, again at Al
2O
3, carry out passive circuit (microstrip circuit) on BeO, Duroid, the F4 dielectric substrates such as (polytetrafluoroethylene), then both are combined by little packaging technology, form element circuit with certain function.Microwave integrated circuit will be considered the radiation of RF signal in the space, so microwave integrated circuit all must be encapsulated in the can of electromagnetic shielding on structure.The signaling interface of microwave integrated circuit can not connect by lead-in wire or pad, needs to connect by special-purpose radio frequency connector (SMA, N, L16 etc.).
This project active circuit adopts the Si substrate, and passive circuit adopts the Duroid dielectric substrate, and WESTBOND equipment is adopted in the circuit assembling, and control interface adopts 15 core sockets, and connecting interface adopts SMA.According to the parameter of using frequency range and selected chip, adopt MICROWAVE-OFFICE, HP-ADS software emulation optimal design, manufacturing process in conjunction with microwave integrated circuit, use distributed constant variable in the Monte-Carlo algorithm synthesis microwave circuit, make the broad frequency range of numerical-control attenuator series of products at 0.5～18GHz, to the control precision of microwave radio signal in 1dB.Can be implemented in the working band, arbitrarily in the interior fluctuating 1dB of attenuation time-frequency band.Chip is selected the electric regulation pipe core MA47418 of MA/COM company for use, and dielectric material is selected 5880 of ROGERS company for use.Size according to micro belt board and printed circuit board is carried out integrated structure design, and micro belt board and printed circuit board are installed in the two sides of circuit box respectively.Adopt little packaging technology that chip and micro belt board are installed, the installation of driver part couples together radio frequency part and drive part by lead then.Need use equipment such as microscope, electric iron, WESBAND spot welding machine during assembling.
Claims (8)
1, microwave numerical-control attenuator control method, its feature comprises the steps:
1) attenuation pairing value in each temperature range is write EPROM;
2) single-chip microcomputer reads current temperature value one time every a time interval, value in each temperature range of OPADD correcting code and EPROM record relatively, if with a preceding temperature in same temperature ranges stated, then address code remains unchanged, if it is different, then jump to the pairing address code of new temperature range, revise the dateout of EPROM;
3) pass through steering D/A conversion afterwards through the drive current circuit, thereby provide corresponding electric current to revise the attenuation of attenuator.
2, microwave numerical-control attenuator control method according to claim 1 is characterized in that: the time interval is 1 second.
3, microwave numerical-control attenuator control method according to claim 1 is characterized in that: the value that writes EPROM is decline in the temperature range of the interval maximum of variable quantity of attenuation.
4, microwave numerical-control attenuator control method according to claim 3 is characterized in that: temperature range is 10 ℃ at interval.
5, microwave numerical-control attenuator control method according to claim 1 is characterized in that: single-chip microcomputer is exported 4 bit address correcting codes after reading current temperature value.
6, according to claim 1,5 described microwave numerical-control attenuator control methods, it is characterized in that: the address correcting code conversion of per 10 ℃ of single-chip microcomputers output once.
7, a kind of device of controlled microwave numerical-control attenuator, comprise signal controlling part, hop, current drives part, it is characterized in that: other is provided with the signal hop and comprises temperature sensor, single-chip microcomputer, EPROM, D/A, temperature sensor is handled the signal of surveying and is outputed to EPROM through single-chip microcomputer, be sent to current driving circuit through D/A through signal afterwards; Current driving circuit comprises amplifier, resistance, and the output of D/A connects the input of amplifier, and the output of amplifier connects integrated analog attenuation circuit.
8, a kind of device of controlled microwave numerical-control attenuator according to claim 7, it is characterized in that: amplifier is made up of the secondary amplifier, the output of D/A connects the input of one-level amplifier, the output of one-level amplifier connects the input of secondary amplifier, and the output of secondary amplifier connects integrated analog attenuation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039347 CN1851977A (en) | 2006-04-06 | 2006-04-06 | Microwave numerical-control attenuator control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039347 CN1851977A (en) | 2006-04-06 | 2006-04-06 | Microwave numerical-control attenuator control method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1851977A true CN1851977A (en) | 2006-10-25 |
Family
ID=37133449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610039347 Pending CN1851977A (en) | 2006-04-06 | 2006-04-06 | Microwave numerical-control attenuator control method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1851977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237883A (en) * | 2010-04-26 | 2011-11-09 | 佳律通信设备(上海)有限公司 | Automatic debugging system for radio frequency module |
| CN104730310A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Measuring device with variable attenuation unit |
| CN109687841A (en) * | 2018-12-21 | 2019-04-26 | 中国电子科技集团公司第五十五研究所 | Broadband temperature compensation attenuator |
-
2006
- 2006-04-06 CN CN 200610039347 patent/CN1851977A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237883A (en) * | 2010-04-26 | 2011-11-09 | 佳律通信设备(上海)有限公司 | Automatic debugging system for radio frequency module |
| CN104730310A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Measuring device with variable attenuation unit |
| CN109687841A (en) * | 2018-12-21 | 2019-04-26 | 中国电子科技集团公司第五十五研究所 | Broadband temperature compensation attenuator |
| CN109687841B (en) * | 2018-12-21 | 2022-08-19 | 中国电子科技集团公司第五十五研究所 | Broadband temperature compensation attenuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100356701C (en) | Transmission power control device and method thereof, computer program for transmission power control device, and radio transmitter | |
| CN1586036A (en) | Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information | |
| CN101442295A (en) | Coaxial connector type fixed attenuator | |
| CN1851977A (en) | Microwave numerical-control attenuator control method and apparatus | |
| CN1101078C (en) | PIN diode variable attenuator | |
| US11309616B2 (en) | Tunable band-stop filter, method of driving the same and electronic device | |
| CN113504742B (en) | Double-fed automatic level control system based on FPGA | |
| CN1929347A (en) | Method for real-time temperature compensation in CDMA mobile phone calibration | |
| CN114337601B (en) | Ultra-wideband microwave signal generator | |
| EP0462338A1 (en) | Phase shifting circuits | |
| López et al. | A 2.5 Vppd broadband 32 GHz BiCMOS linear driver with tunable delay line for InP segmented Mach-Zehnder modulators | |
| CN110676543B (en) | External loading type low-pass and band-stop microwave transmission line filter of coupling line with reconfigurable transmission response | |
| CN206727963U (en) | A kind of radio-frequency power amplifier of controllable gain | |
| CN216597918U (en) | Microwave filter, quantum measurement and control system and quantum computer | |
| CN204089876U (en) | A kind of amplitude equalizer | |
| CN103684276A (en) | Temperature compensation circuit and electronic device with temperature compensation | |
| CN217388668U (en) | Signal attenuator | |
| CN111261985A (en) | Miniaturized multi-channel radio frequency large dynamic attenuation circuit structure and corresponding shielding device | |
| CN111537971B (en) | Quick compensation circuit and method for amplitude-phase characteristics of delay component | |
| TWI781838B (en) | Signal feedback gain circuit | |
| CN220511084U (en) | Power amplifying device of radio frequency test instrument | |
| CN101789804B (en) | Radio frequency front-end device, gain control method and system thereof | |
| EP0733261A1 (en) | Attenuator especially for audio-signals | |
| CN216673004U (en) | Phase-adjustable control system and radio frequency circuit | |
| CN202004133U (en) | Microstrip transmission line capable of realizing far-end suppression and radio frequency circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |