CN210469338U - Signal source extension set for microwave power capacity tester - Google Patents
Signal source extension set for microwave power capacity tester Download PDFInfo
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- CN210469338U CN210469338U CN201922353513.1U CN201922353513U CN210469338U CN 210469338 U CN210469338 U CN 210469338U CN 201922353513 U CN201922353513 U CN 201922353513U CN 210469338 U CN210469338 U CN 210469338U
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Abstract
The utility model discloses a signal source extension for microwave power capacity tester, include: the system comprises a frequency source module, a radio frequency gating switch, a pulse modulation module, an ALC correction module and a switch switching circuit which are connected in sequence; the frequency source module generates an internal radio frequency signal; the radio frequency gating switch outputs an internal radio frequency signal or an external radio frequency signal; the signal source extension set also comprises a control unit and a power supply unit, wherein the control unit is connected with the frequency source module, the radio frequency gating switch, the pulse modulation module, the ALC correction module and the switch switching circuit; the power supply unit supplies power to the signal source extension set; the signal source extension can provide radio frequency signals with high stability and accuracy.
Description
Technical Field
The utility model relates to a microwave test technique, especially a signal source extension for microwave power capacity tester.
Background
The microwave power capacity tester is an indispensable instrument in microwave communication research, and can help researchers to research generation, amplitude control, frequency hopping, mode control and the like of high-power microwave signals; the microwave power capacity tester is composed of a plurality of hardware devices, wherein the indispensable hardware devices comprise signal source extensions.
In practical use, the microwave power capacity tester expects the signals output by the signal source extension to have a wide range of output frequency and high stability and accuracy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a signal source extension for microwave power capacity tester, can provide the radio frequency signal of high stability and accuracy.
The purpose of the utility model is realized through the following technical scheme:
a signal source extension for microwave power capacity tester includes: the system comprises a frequency source module, a radio frequency gating switch, a pulse modulation module, an ALC correction module and a switch switching circuit which are connected in sequence;
the frequency source module generates an internal radio frequency signal; the radio frequency gating switch outputs an internal radio frequency signal or an external radio frequency signal;
the signal source extension set also comprises a control unit and a power supply unit, wherein the control unit is connected with the frequency source module, the radio frequency gating switch, the pulse modulation module, the ALC correction module and the switch switching circuit;
and the power supply unit supplies power to the signal source extension set.
Further, the frequency source module includes: the circuit comprises a crystal oscillator, a phase-locked loop and a first single-pole double-throw switch which are sequentially connected, wherein the immobile end of the first single-pole double-throw switch is connected with the phase-locked loop;
the frequency multiplier, the switch filter circuit, the second single-pole double-throw switch and the amplifier are also included;
the input end of the frequency multiplier is connected with a movable end of the first single-pole double-throw switch, the output end of the frequency multiplier is connected with the input end of the switch filter circuit, the output end of the switch filter circuit is connected with a movable end of the second single-pole double-throw switch, the other movable end of the first single-pole double-throw switch is connected with the other movable end of the second single-pole double-throw switch, and the immobile end of the second single-band double-throw switch is connected with the amplifier.
Furthermore, the radio frequency gating switch comprises a third single-pole double-throw switch, one moving end of the third single-pole double-throw switch is connected with an external radio frequency signal input, and the other moving end of the third single-pole double-throw switch is connected with an internal radio frequency signal input; and the immobile end of the third single-pole double-throw switch is connected with the signal input end of the pulse modulation module.
Further, the pulse modulation module includes a radio frequency switch, and
a switch driver to drive the radio frequency switch.
Further, the ALC correction module includes an electrically tunable attenuator, and
and the numerical control attenuator is connected with the electrically-adjusted attenuator.
Further, the switch switching circuit comprises a plurality of output circuits, and the plurality of output circuits are respectively connected with different power amplifier circuits.
Further, the control unit comprises an FPGA controller.
The utility model has the advantages of it is following:
1. the signal source splitter can output radio frequency signals with large range of frequency, high stability and high accuracy, and can freely select a designated power amplifier according to the requirements of users;
2. the signal source extension can realize pulse modulation or continuous wave work of radio frequency signals.
Drawings
Fig. 1 is a composition structure diagram of the signal source extension set of the present invention;
fig. 2 is a circuit diagram of a frequency source module of the signal source extension set of the present invention;
fig. 3 is a circuit diagram of the pulse modulation module of the signal source extension set of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a signal source extension for microwave power capacity tester, including frequency source module, radio frequency gating switch, pulse modulation module, ALC correction module and the switch switching circuit who connects gradually; the signal source extension has an external signal input and an internal signal input, wherein the internal signal is generated by the frequency source module and the external signal input is a radio frequency signal provided by a user.
The frequency source module generates an internal radio frequency signal, and the radio frequency signal can be set and adjusted according to the requirements of a user; the radio frequency gating switch selectively outputs an internal radio frequency signal or an external radio frequency signal so as to realize modulation and amplification of different radio frequency signals; the pulse modulation module can realize pulse modulation or continuous wave work of radio frequency signals, and the pulse modulated waveform can also be generated internally or modulated according to a modulation waveform externally connected by a user; the switch switching circuit can output the radio frequency signal to a specified power amplifier according to the user requirement, namely, the radio frequency signal is output to a signal input interface of a specific power amplifier module.
The signal source extension set also comprises a control unit and a power supply unit, wherein the control unit is connected with the frequency source module, the radio frequency gating switch, the pulse modulation module, the ALC correction module and the switch switching circuit, and the control unit adopts an FPGA controller and is used for finishing the control of working frequency, output power and output channels; the power supply unit supplies power for the signal source extension set, and the power supply unit is used for supplying stable 5V voltage.
The frequency source module comprises a crystal oscillator, a phase-locked loop and a first single-pole double-throw switch which are sequentially connected, the immovable end of the first single-pole double-throw switch is connected with the phase-locked loop, a reference frequency signal output by the crystal oscillator is sent to the phase-locked loop, and the phase-locked loop finally outputs a radio frequency signal of a corresponding frequency band.
The crystal oscillator is a temperature compensation crystal oscillator, and a reference signal provided by the temperature compensation crystal oscillator has higher stability and accuracy, so that the frequency stability and accuracy of a radio frequency signal output by the phase-locked loop are guaranteed.
The frequency source module also comprises a frequency multiplier, a switch filter circuit, a second single-pole double-throw switch and an amplifier; the input end of the frequency multiplier is connected with a movable end of the first single-pole double-throw switch, the output end of the frequency multiplier is connected with the input end of the switch filter circuit, the output end of the switch filter circuit is connected with a movable end of the second single-pole double-throw switch, the other movable end of the first single-pole double-throw switch is connected with the other movable end of the second single-pole double-throw switch, and the immobile end of the second single-band double-throw switch is connected with the amplifier; after the radio frequency signal is processed by the frequency multiplier, the radio frequency signal is filtered by the switch filter circuit.
The radio frequency gating switch comprises a third single-pole double-throw switch, one movable end of the third single-pole double-throw switch is connected with an external radio frequency signal input, and the other movable end of the third single-pole double-throw switch is connected with an internal radio frequency signal input; the fixed end of the third single-pole double-throw switch is connected with the signal input end of the pulse modulation module; the radio frequency gating switch realizes the control of inputting an internal radio frequency signal or an external radio frequency signal by the control unit.
The pulse modulation module comprises a radio frequency switch and a switch driver for driving the radio frequency switch, the radio frequency switch is a single-pole single-throw switch, the radio frequency switch adopts a single-pole single-throw switch with low insertion loss and high isolation, and the radio frequency switch can realize higher pulse turn-off ratio in a two-stage cascade mode.
The single-pole single-throw switch is driven by negative voltage, and the switch driver comprises a double-path PIN tube driver and drives the radio frequency switch by certain negative voltage.
The ALC correction module comprises an electrically-tuned attenuator and a numerical control attenuator connected with the electrically-tuned attenuator; the electrically-adjusted attenuator and the numerical control attenuator adopt DAC chips.
The switch switching circuit comprises a plurality of output circuits, the output circuits are respectively connected with different power amplifier circuits, and a user selects to output radio frequency signals to a specified power amplifier according to requirements, namely to output the radio frequency signals to a signal input interface of a specific power amplifier module.
The control unit comprises an FPGA controller, and the FPGA controller is used for finishing control of working frequency, output power and an output channel.
Claims (7)
1. A signal source extension for microwave power capacity tester, its characterized in that includes: the system comprises a frequency source module, a radio frequency gating switch, a pulse modulation module, an ALC correction module and a switch switching circuit which are connected in sequence;
the frequency source module generates an internal radio frequency signal; the radio frequency gating switch outputs an internal radio frequency signal or an external radio frequency signal;
the signal source extension set also comprises a control unit and a power supply unit, wherein the control unit is connected with the frequency source module, the radio frequency gating switch, the pulse modulation module, the ALC correction module and the switch switching circuit;
and the power supply unit supplies power to the signal source extension set.
2. The signal source extension of claim 1, wherein the frequency source module comprises: the circuit comprises a crystal oscillator, a phase-locked loop and a first single-pole double-throw switch which are sequentially connected, wherein the immobile end of the first single-pole double-throw switch is connected with the phase-locked loop;
the frequency multiplier, the switch filter circuit, the second single-pole double-throw switch and the amplifier are also included;
the input end of the frequency multiplier is connected with a movable end of the first single-pole double-throw switch, the output end of the frequency multiplier is connected with the input end of the switch filter circuit, the output end of the switch filter circuit is connected with a movable end of the second single-pole double-throw switch, the other movable end of the first single-pole double-throw switch is connected with the other movable end of the second single-pole double-throw switch, and the immobile end of the second single-band double-throw switch is connected with the amplifier.
3. The signal source extension of claim 1, wherein the radio frequency gating switch comprises a third single-pole double-throw switch, one moving end of the third single-pole double-throw switch is connected to an external radio frequency signal input, and the other moving end of the third single-pole double-throw switch is connected to an internal radio frequency signal input; and the immobile end of the third single-pole double-throw switch is connected with the signal input end of the pulse modulation module.
4. The signal source extension of claim 1, wherein the pulse modulation module comprises a radio frequency switch, and
a switch driver to drive the radio frequency switch.
5. The signal source extension of claim 1, wherein the ALC correction module comprises an electrically-tuned attenuator, and
and the numerical control attenuator is connected with the electrically-adjusted attenuator.
6. The signal source extension of claim 1, wherein the switch switching circuit comprises a plurality of output circuits, and different power amplifier circuits are respectively connected to the plurality of output circuits.
7. The signal source extension of claim 1, wherein the control unit comprises an FPGA controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353513.1U CN210469338U (en) | 2019-12-23 | 2019-12-23 | Signal source extension set for microwave power capacity tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922353513.1U CN210469338U (en) | 2019-12-23 | 2019-12-23 | Signal source extension set for microwave power capacity tester |
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| CN210469338U true CN210469338U (en) | 2020-05-05 |
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| CN201922353513.1U Active CN210469338U (en) | 2019-12-23 | 2019-12-23 | Signal source extension set for microwave power capacity tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684322A (en) * | 2020-12-22 | 2021-04-20 | 北京北广科技股份有限公司 | Test platform of power module |
| CN113867238A (en) * | 2021-12-06 | 2021-12-31 | 成都威频科技有限公司 | Agile ALC system with amplitude and pulse modulation functions and control method thereof |
| CN115473524A (en) * | 2022-09-19 | 2022-12-13 | 广东圣大通信有限公司 | Automatic level control's agile frequency source |
-
2019
- 2019-12-23 CN CN201922353513.1U patent/CN210469338U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684322A (en) * | 2020-12-22 | 2021-04-20 | 北京北广科技股份有限公司 | Test platform of power module |
| CN112684322B (en) * | 2020-12-22 | 2022-11-08 | 北京北广科技股份有限公司 | Test platform of power module |
| CN113867238A (en) * | 2021-12-06 | 2021-12-31 | 成都威频科技有限公司 | Agile ALC system with amplitude and pulse modulation functions and control method thereof |
| CN113867238B (en) * | 2021-12-06 | 2022-02-11 | 成都威频科技有限公司 | Agile ALC system with amplitude and pulse modulation functions and control method thereof |
| CN115473524A (en) * | 2022-09-19 | 2022-12-13 | 广东圣大通信有限公司 | Automatic level control's agile frequency source |
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