CN204068940U - Based on the high-power transmitter of linearizer - Google Patents
Based on the high-power transmitter of linearizer Download PDFInfo
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- CN204068940U CN204068940U CN201420478226.8U CN201420478226U CN204068940U CN 204068940 U CN204068940 U CN 204068940U CN 201420478226 U CN201420478226 U CN 201420478226U CN 204068940 U CN204068940 U CN 204068940U
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- power
- transmitter
- linearizer
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- microwave switch
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Abstract
The utility model discloses a kind of high-power transmitter based on linearizer, comprise the power supply unit for powering to transmitter, control unit and the microwave switch be connected in turn, numerical-control attenuator, linearizer, power amplifier and waveguide barrier assembly; The input of microwave switch is connected with radio-frequency signal source; The output of waveguide barrier assembly is radio-frequency (RF) output end; Control unit is connected with microwave switch, numerical-control attenuator and power amplifier respectively.This programme, by linearizer is added in high-power transmitter front end, by the power compression value of Test Application system amplifier section, utilizes the negative exponent characteristic of the positive exponent characteristic compensation transmitter of linearizer.By the indicatrix of linear adjustment device, the linear work district that can expand transmitter on the basis not increasing rated output power of transmitter, to improve the linearity of application system, reduces the power output of transmitter.
Description
Technical field
The utility model relates to transmitter, is specifically related to the high-power transmitter based on linearizer.
Background technology
As shown in Figure 1, in linear zone, the input power of transmitter increases the characteristic curve diagram that the gain of current high-power transmitter both domestic and external increases with input power, and power output linearly increases, and namely gain is constant; But along with input power increases, transmitter progressively enters saturation region, gain starts to reduce, until transmitter arrives saturation point, now input power increases, and power output no longer increases.
(application system is in logarithmic coordinates above-mentioned high-power transmitter to be applied to the high application system of linearity, the system that power output linearly increases with input power), such as, in the fields such as commercial communication, satellite communication, radar communication time, most of high-power transmitter all needs to adopt the mode of back-off to tackle linear operation requirement.Linear demand can be met though do like this, but because the mode power loss of rollback is up to 40%, in order to reach the linearity of system requirements, just need the power output increasing transmitter, cause cost significantly to improve, and adopt the transmitter frequency of back-off mode very low.
Utility model content
For the above-mentioned deficiency in existing, the high-power transmitter based on linearizer that the utility model provides, by after the linearizer that increases, just can ensure the linearity of application system when not increasing the power output of transmitter.
In order to reach foregoing invention object, the technical scheme that the utility model adopts based on the high-power transmitter of linearizer is: comprise the power supply unit for powering to transmitter, control unit and the microwave switch be connected in turn, numerical-control attenuator, linearizer, power amplifier and waveguide barrier assembly; The input of microwave switch is connected with radio-frequency signal source; The output of waveguide barrier assembly is radio-frequency (RF) output end; Control unit is connected with microwave switch, numerical-control attenuator and power amplifier respectively.
The beneficial effects of the utility model are: this programme is by being added in high-power transmitter front end by linearizer, by the power compression value of Test Application system amplifier section, utilize the negative exponent characteristic of the positive exponent characteristic compensation transmitter of linearizer, the indicatrix of linear adjustment device, the linear work district that can expand transmitter on the basis not increasing rated output power of transmitter, to improve the linearity of application system, reduces the power output of transmitter.
Accompanying drawing explanation
Fig. 1 is general transmit machine gain/input power curve chart;
Fig. 2 is the theory diagram of the high-power transmitter based on linearizer;
Fig. 3 is linearizer gain/input power curve chart;
Fig. 4 is the gain/input power curve chart of the utility model based on the high-power transmitter of linearizer.
Embodiment
Below embodiment of the present utility model is described; so that those skilled in the art understand the utility model; but should be clear; the utility model is not limited to the scope of embodiment; to those skilled in the art; as long as various change to limit and in the spirit and scope of the present utility model determined, these changes are apparent, and all innovation and creation utilizing the utility model to conceive are all at the row of protection in appended claim.
With reference to figure 2, the technical scheme that the utility model embodiment adopts is: comprise the power supply unit for powering to transmitter, control unit and the microwave switch be connected in turn, numerical-control attenuator, linearizer, power amplifier and waveguide barrier assembly; The input of microwave switch is connected with radio-frequency signal source; The output of waveguide barrier assembly is radio-frequency (RF) output end; Control unit is connected with microwave switch, numerical-control attenuator and power amplifier respectively.
In an embodiment of the present utility model, the input of microwave switch is connected with rf input interface; The output of waveguide barrier assembly is connected with radio frequency output interface.
Wherein, microwave switch controls the break-make of radio-frequency channel; Numerical-control attenuator is for regulating the gain amplifier of radio-frequency channel; Signal is amplified to and requires level by power amplifier; Waveguide barrier assembly plays the effect of insulation blocking.
In an embodiment of the present utility model, power supply unit comprises AC/DC converter and the voltage converter for powering to transmitter; The output that input and the city of AC/DC converter are electrically connected AC/DC converter is connected with voltage converter.Concrete voltage converter is connected with control unit, microwave switch, numerical-control attenuator, linearizer and power amplifier respectively, powers for giving control unit, microwave switch, numerical-control attenuator, linearizer and power amplifier.
Wherein, feed is provided after the level that AC220V power supply Input transformation needs for each parts by AC/DC converter and voltage converter.Control unit will implement the action of break-make microwave switch after the information management detected, be responsible for protection transmitter, control appliance runs by designing requirement.
In addition, the apparatus for protecting power supply be connected with AC/DC converter, by detecting the operating current voltage of transmitter, when the operating current voltage over standard of transmitter, cutting off power supply and exporting.
In an embodiment of the present utility model, transmitter is provided with the communication interface and display interface that are connected with control unit.
In this programme, linearizer is added in application system front end, by the power compression value of Test Application system amplifier section, utilize the positive exponent characteristic of linearizer (the positive exponent characteristic of linearizer as shown in Figure 3, when input power reaches certain value, gain exponentially ratio increases, and expands, the gain compression problem of lucky compensation transmitter.) the negative exponent characteristic of compensation transmitter, the indicatrix of linear adjustment device, for improving the linear index of application system.
According to shown in Fig. 2 based on after the high-power transmitter pre-distortion of linearizer, linear zone increases, do not increasing on the basis of rated output power, just achieve the object improving linear power, can reference diagram 4, the linear work district of the high-power transmitter after linearizer pre-distortion comparatively general transmit machine adds about 3dB, if that is there is no linearizer, in order to obtain the linear power value of formed objects, need the power output of transmitter to increase about 1 times, both wasted power and also increased substantially cost.
Claims (5)
1. the high-power transmitter based on linearizer, it is characterized in that: comprise the power supply unit for powering to transmitter, control unit and the microwave switch be connected in turn, numerical-control attenuator, linearizer, power amplifier and waveguide barrier assembly; The input of described microwave switch is connected with radio-frequency signal source; The output of described waveguide barrier assembly is radio-frequency (RF) output end; Described control unit is connected with described microwave switch, described numerical-control attenuator and described power amplifier respectively.
2. the high-power transmitter based on linearizer according to claim 1, is characterized in that: described power supply unit comprises AC/DC converter and the voltage converter for powering to transmitter; The output that input and the city of described AC/DC converter are electrically connected AC/DC converter is connected with voltage converter.
3. the high-power transmitter based on linearizer according to claim 2, is characterized in that: also comprise the apparatus for protecting power supply be connected with described AC/DC converter.
4. the high-power transmitter based on linearizer according to claim 1, is characterized in that: the input of described microwave switch is connected with rf input interface; The output of described waveguide barrier assembly is connected with radio frequency output interface.
5., according to the arbitrary described high-power transmitter based on linearizer of claim 1-4, it is characterized in that: also comprise the communication interface and display interface that are connected with described control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478226.8U CN204068940U (en) | 2014-08-23 | 2014-08-23 | Based on the high-power transmitter of linearizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478226.8U CN204068940U (en) | 2014-08-23 | 2014-08-23 | Based on the high-power transmitter of linearizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068940U true CN204068940U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420478226.8U Active CN204068940U (en) | 2014-08-23 | 2014-08-23 | Based on the high-power transmitter of linearizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974379A (en) * | 2016-05-11 | 2016-09-28 | 贵州航天计量测试技术研究所 | Device for simulating rotation speed of antenna and realization method of device |
-
2014
- 2014-08-23 CN CN201420478226.8U patent/CN204068940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974379A (en) * | 2016-05-11 | 2016-09-28 | 贵州航天计量测试技术研究所 | Device for simulating rotation speed of antenna and realization method of device |
| CN105974379B (en) * | 2016-05-11 | 2019-02-15 | 贵州航天计量测试技术研究所 | A kind of device that realizing artificial antenna revolving speed and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU SIWI POWER ELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER NAME: CHENGDU SIWI AVIATION POWER SUPPLY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 3, No. 1, building 1, building 35, 610091 west slope Su Road, Chengdu, Sichuan Patentee after: CHENGDU SIWI POWER ELECTRONIC TECHNOLOGY CO., LTD. Address before: 3, No. 1, building 1, building 35, 610091 west slope Su Road, Chengdu, Sichuan Patentee before: Chengdu SIWI Aviatic Power Supply Co., Ltd. |