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Recent content by ahmer saeed

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    Help us implement a 64 MHz crystal oscillator and op-amp after it

    there is a problem in our circuit please help to resolve it. We have implement a 64 MHz crystal Oscillator and then the OP-Amp circuit after it. Even the Op amp circuit is isolated but the 64 MHz frequency is still reaching to the OP amp thriugh ground. If we are measuring frequency by placing...
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    Space qualified - some help on a task needed

    Space qualified There is a task assigned to me. Can any one help me ? The task is "Study the electronic components mounting reqmt. and specify, soldering material, substrate material of PCBs, mounting screws, jumper wires and tools" Keep in mind that the above task is for the satellite...
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    ADF 4007 charge pump output

    adf4007 We are using ADF 4007 PLL Synthesizer IC for our PLL. We are not sure about the response of Charge pump of this IC. Any one know the relation of duty cycle to the gfrequency difference that what % of duty cycle is obtained at what frequency difference?
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    varactor diode in ADS2003A

    I am not finding the library of Varactor diode(variable capacitance diode).Please anyone mebtion it in the library.
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    Can anybody send me the circuit of 66MHz crystal?

    crustal oscillator Can anybody send me the circuit of 66MHz crystal.
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    linear and nonlinear simulation

    what is the difference between linear and non linear simulation? please describe.
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    How can we place our Varactor diode in generator network?

    Re: varactor in VCO My design is of 2 GHz.Varctor should be in series or parrellel?Between two trnsmission line or between transmission line and ground.
  8. A

    How can we place our Varactor diode in generator network?

    varactor in VCO How can we place our Varactor diode in generator network if we are designing using transmission line and parrellel stubs(not using discrete components).
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    Looking for varactor diode at ADS 2003A

    varactor in ads please help me infinding varactor diode in ADS. I have found only of Alpha Industries. Is there varactor of any other manufacturer. I want to use in VCO.
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    Help me with designing a s band VCO

    s band vco I want to design s band vco. If the source and terminating network of local oscillator is design using transmission line and stubs without using discrete components ,Can it be change to vco by inserting varacter diode? Can VCO can only be design using discrete component? Please...
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    Is it dangerous to health?

    We are testing 5 Watt S- band transmitter in the lab and are directly expose to it. Is it dangerous to the health?
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    Help me with designing a X-band amplifier

    x band amplifier I want todesign x band amplifier having gain 12 dB but not finding out the appropriate transistor.Is there any Agilent pHEMT which can be used in order to design the amplifier of required gain and frequency. We have tried many transistor but S21 parameter do not increase above...
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    Opinions on SimPll software

    SimPll Does anyone used the pll design tool of Applied radiolab's "Simpll". How is it?
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    PLL based frequency synthesizer

    I want to design pll based frequency synthesizer for a frequency 2 GHz.Pleaese guide me how to design. I have develop fixed oscillator using BJT. How I can convert it into VCO.
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    What to use for designing a 500 Mbps QPSK modulator

    Re: QPSK modulator What do you think? What maximum data rate is easily achieveable in QPSK modulation. Our target is of 500 Mbps but we can compensate. What do you think?Is 300 Mbps could easily be acheived?
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