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Recent content by caep_daniel

  1. C

    amplitude modulation..?

    differences between dsbsc and am that's too easy.no problem to analysis so in detail.
  2. C

    transmitter wireless digital video

    and I think most important is the frenquency response of your transmitter,if you use FM to transmit the video.because the video has about 8MHz bandwidth.
  3. C

    PLL circuit and microcontroller - Noise?

    u can decrease the noise through the proper layout of the PCB of the PLL circuits. Added after 12 minutes: in transmitter design, the problem also existed.
  4. C

    rf transceiver design in labview

    rf transceiver..... use a two-stage amp!and you should consider about you system requirements. such as volume\weight.
  5. C

    Question about ADS interface

    @DS question you can alter the preference of the software default setting. and so you can easily use them.
  6. C

    how ads simulate communication system including rf and dsp

    how @DS simulate communication system including rf and dsp ADS can simulate the RF and DSP with the tools named co-simulation. for example if you want to simulate one system contains DSP part and RF mixers,you cna use co-simulation to simulate the spectrum and power output. I have done some...
  7. C

    Is ADS accurate for VCO simulation???

    Is @DS accurate for VCO simulation??? contrary to ansoft designer, I prefer ADS2003,because it can predict the result of VCO design. I have design a VCO at 2GHz which includes many microstrip. and I think there are 100MHz offset between sumilation and measurements. the phase noise simulation is...
  8. C

    Glitches at demodulated output of PLL and Voltage regulator

    PLL and Votage regulator I think maybe the pll doesn't work properly.
  9. C

    Looking for small high quality FM transmitter

    i need FM transmitter can you give me some website about 2GHz FM transmitter design with PLL and microcontroller? regards.
  10. C

    PLL based frequency synthesizer

    you can design a synthesizer with peregrine's pe3336 or national 's lmx23X6 series and it's easy to design them.if you have no special requirement you can use passive LF filter . it's economical.
  11. C

    help me about the use of RF transistor MRF282!

    mrf282 I now design one PA for some applications,using the motorola transistor-MRF282.its specifications are:Vcc=26V, Pout=10W at 2GHz, and the efficiency is about 40%.But I have no experience about this transistor.Anyone who has designed PA with this transistor please give me some...
  12. C

    Wideband microwave VCO design , YIG excluded

    try some balanced VCO design with two transistors and you can get an octave VCO,so meet your needs.
  13. C

    How to make/get M/A-COM MA4E2037 diode model for ADS?

    Diode modelling in @DS you can use an empirical model of the common diode and make some repair.
  14. C

    How to convert band-pass filter to microstrip lines filter?

    @DS question you can use smith chart and calculate the corresponding length and width of microstrips.
  15. C

    Recommend me a small sized microcontroller!

    micro controllers! can you recommand me a small size microcontrollers such as atmel 89c2051 or cop8saa5, and can anyone give me a good suggestion ? give me a good comparison beteen all good microcontrollers and other devices. from performance, price, and etc. best regards.
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