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Based on DSP video frequency gathering system design
Friday, July 3rd, 2009 at 16:55 | No commentsCategories: DSPShort Content: 0 introductions The digital image processing technology obtained the widespread application in the electronic communications and the information processing domain, designs one kind of function to be nimble, the easy to operate, is advantageous inserts has the vital practical significance to system's in video signal gathering electric circuit. When research based on DSP video frequency supervisory system, considered the high speed real-time processing and the practical two aspect's specific request, needs to develop one kind to have high speed, characteristic ... -
One kind instead stirs up synchronized rectification DC-DC the converter design
Tuesday, February 3rd, 2009 at 23:53 | No commentsCategories: Power SupplyTags: DC-DC, Instead stirs up the transformation, leveling circuit analysis situs, Power source, synchronizationShort Content: Picking Wanting: To instead stirred up the synchronized rectification to conduct the research in the low pressure undercurrent DC-DC converter's application, introduced the main circuit principle of work, several drive types and the good and bad points, chose suit in instead stir up the electric circuit analysis situs from the actuation synchronization rectification, and through the prototypical experiment, has confirmed this electric circuit's usability. Key word: Instead stirs up the transformation; Synchronized rectification; Electric circuit analysis situs Introduction The ... -
The digital difference BPSK wide frequency receiver’s design and FPGA realize - en.51rd.net
Monday, November 17th, 2008 at 13:12 | No commentsCategories: Communication NetworksShort Content: Abstract: This article proposed one kind of entire digital difference BPSK wide frequency receiver realizes the plan, confirmed this plan through the Simulink simulation to have the low error rate. Then using the Verilog hardware description language programming, adopted the synthesis and the simulation confirmation, finally has realized the overall system in Xilinx on Corporation FPGA. This system after the optimization design, has the easy hardware to realize, takes the chip resources few and so on merits, has certain guiding ... -
One kind of structure simple UWB receiver’s design with realizes - en.51rd.net
Friday, October 17th, 2008 at 22:14 | No commentsCategories: Communication NetworksShort Content: Introduction At present, the ultra-wide band (UWB) demodulation method may induce into the following three kinds: One kind is constructs one with the received signal similar template signal, then selects the related method; Other one kind is uses the integral detection the way to demodulate the UWB signal; Also one kind is carries on A/D to the receive signal to transform, through sampling value identification signal. The first kind of plan realizes is quite difficult, because ns level pulse, if realizes ... -
Has the out of phase synchronization function power source controller
Thursday, October 16th, 2008 at 02:54 | No commentsCategories: Power SupplyTags: synchronizationShort Content: Abstract: The new generation directs current the module power source required power density to be high, performance entire, price low status characteristic. SC4808 is one section specially the control chip which for the push-pull, half bridge, the entire bridge-type direct-current converter uses. The unique out of phase synchronization function causes two group of power source module work to interlock the parallel condition. This characteristic reduced the input/output ripple, and reduced the input/output filter element's quantity. Key word: DC/DC ... -
In transmission system’s clock synchronization technology
Tuesday, October 7th, 2008 at 15:07 | No commentsCategories: Communication NetworksTags: synchronizationShort Content: The synchronized module is each system's heart, it for system's in other each module present correct clock signal. Therefore needs and realizes to the synchronized module design gives specially the attention. This article to affected the system design the clock characteristic to carry on the inspection, and the reason which worsened to the signal has carried on the appraisal. This article has also analyzed the influence which the synchronization worsens, and to the Standardization organization to guarantee the transmission quality ... -
With realizes - en.51rd.net based on the FPGA pseudo-code range-measuring circuit’s design
Wednesday, September 10th, 2008 at 01:02 | No commentsCategories: EDA/PLDShort Content: Abstract: Introduced based on the pseudo-code range finder's some positioning system's design proposal, the summary analysis pseudo-code range finder's principle, has studied has realized the pseudo-code capture and the track method with FPGA. -
With realizes - en.51rd.net based on the FPGA OQPSK demodulator’s design
Monday, September 8th, 2008 at 09:02 | No commentsCategories: EDA/PLDShort Content: Abstract: According to the software radio the thought that has realized the OQPSK demodulation take the FPGA component as the core, the majority of functions realize by the FPGA interior resources. The entire design series chip realizes the OQPSK demodulator take Altera Corporation programmable logic chip FLEX the 10K as the core, has the volume to be small, the power loss is low, the integration rate high, may the software promotion and the antijamming ability strong characteristic, like this both ...
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