CN208028863U - A kind of burst pulse modulation amplifying circuit - Google Patents
A kind of burst pulse modulation amplifying circuit Download PDFInfo
- Publication number
- CN208028863U CN208028863U CN201820408832.0U CN201820408832U CN208028863U CN 208028863 U CN208028863 U CN 208028863U CN 201820408832 U CN201820408832 U CN 201820408832U CN 208028863 U CN208028863 U CN 208028863U
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- CN
- China
- Prior art keywords
- radio frequency
- frequency amplifier
- pulse modulation
- amplifying circuit
- burst pulse
- 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.)
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Abstract
The utility model discloses a kind of burst pulse modulation amplifying circuits, including fpga chip, LVDS receiver, voltage buffer and radio frequency amplifier, the fpga chip, LVDS receiver and voltage buffer are sequentially connected, the output end of the voltage buffer connects the control terminal of the radio frequency amplifier, and the input terminal of the amplifier connects RF signal transmitter.The rising edge of a pulse and failing edge of the utility model may be implemented to be less than 2ns, substantially increase the overall performance of equipment.
Description
Technical field
The utility model is related to wirelessly communicate more particularly to a kind of burst pulse modulation amplifying circuit.
Background technology
With the development of electronic technology, modulated pulse amplifier has been widely used for the necks such as radio, radar, communication
Domain.Such as in radar system, modulated pulse amplifier is that wherein indispensable composition cuts open part.And the rising edge of pulse is under
Drop is along the basic mechanical design feature for directly influencing radar.Therefore, improve pulse amplifier rising edge and failing edge to radar system
Tool has very important significance for system.
It is 30us that modulated pulse amplifier, which is commonly used on wide pulse modulation pulsewidth such as, at present, and rising edge and failing edge are
30ns.When pulsewidth changes to 10ns, rising edge and failing edge come then very big with respect to pulsewidth, directly influence the complete machine of equipment
Energy.
Invention content
Goal of the invention：The utility model provides a kind of narrow for the wide problem of rising edge in the prior art and failing edge
Impulse modulation amplifying circuit, the rising edge and failing edge of pulse signal may be implemented to be less than 2ns, improve equipment overall performance.
Technical solution：Burst pulse modulation amplifying circuit described in the utility model includes fpga chip, LVDS receiver, electricity
Compression buffer and radio frequency amplifier, the fpga chip, LVDS receiver and voltage buffer are sequentially connected, the voltage buffer
The output end of device connects the gate terminal of the radio frequency amplifier, and the input terminal of the amplifier connects RF signal transmitter.Institute
It is specially VMMK-1218 chips to state radio frequency amplifier model.
Advantageous effect：Compared with prior art, remarkable advantage is the utility model：The utility model utilizes FPGA numbers
Circuit carries out nanoscale burst pulse modulation to radio frequency link, wherein pulse signal rising edge and failing edge can be less than 2ns, carry
High equipment overall performance.
Description of the drawings
Fig. 1 is the system block diagram of one embodiment of the utility model；
Fig. 2 is to be tested to obtain VMMK-1218 output modulation figures with radio frequency detector pipe, and X-axis is chronomere S, and Y-axis is detection
The amplitude units that pipe is tested are V.
Specific implementation mode
As shown in Figure 1, the burst pulse modulation amplifying circuit of the present embodiment includes that fpga chip, LVDS receiver, voltage are slow
Device and radio frequency amplifier are rushed, fpga chip, LVDS receiver and voltage buffer are sequentially connected, and the output end of voltage buffer connects
The gate terminal of radio frequency amplifier is connect, the input terminal of amplifier connects RF signal transmitter.
Operation principle：Fpga chip sends out the LVDS signals of high speed, and LVDS receiver is converted to TTL after receiving LVDS signals
Signal, the rising edge of TTL signal and failing edge are less than 1ns at this time.TTL signal carries after electric resistance partial pressure through overvoltage buffer
High current driving capability controls the gate pole of radio frequency amplifier, to realizing the turn-on and turn-off of radio frequency amplifier.Amplifier is defeated
Enter end connection RF signal transmitter, RF signal transmitter sends out sine wave signal, real by the control of amplifier gate terminal
Now to the amplification of input signal and modulation, specific amplifier output signal is as shown in Figure 2.Wherein, radio frequency amplifier selects avago
The VMMK-1218 devices of company, the device have good index using E-pHEMT technologies.VMMK-1218 operating frequency ranges
18GHz is arrived 0.5, noise figure is less than 0.85dB, and gain is 9dB under the conditions of 10GHz 50 Ω of frequency, is provided with simultaneously
22dBm exports the output power of three rank sections and 12dBm.
Above disclosed is only a kind of the utility model preferred embodiment, cannot limit the utility model with this
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (3)
1. a kind of burst pulse modulation amplifying circuit, it is characterised in that：Including fpga chip, LVDS receiver, voltage buffer and
Radio frequency amplifier, the fpga chip, LVDS receiver and voltage buffer are sequentially connected, the output end of the voltage buffer
The control terminal of the radio frequency amplifier is connected, the input terminal of the amplifier connects RF signal transmitter.
2. burst pulse modulation amplifying circuit according to claim 1, it is characterised in that：The control terminal of the radio frequency amplifier
The specially gate terminal of radio frequency amplifier.
3. burst pulse modulation amplifying circuit according to claim 1, it is characterised in that：The radio frequency amplifier model is specific
For the VMMK-1218 chips of avago companies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408832.0U CN208028863U (en) | 2018-03-26 | 2018-03-26 | A kind of burst pulse modulation amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408832.0U CN208028863U (en) | 2018-03-26 | 2018-03-26 | A kind of burst pulse modulation amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208028863U true CN208028863U (en) | 2018-10-30 |
Family
ID=63907350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820408832.0U Active CN208028863U (en) | 2018-03-26 | 2018-03-26 | A kind of burst pulse modulation amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208028863U (en) |
-
2018
- 2018-03-26 CN CN201820408832.0U patent/CN208028863U/en active Active
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