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Recent content by alam_1832

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    what is the relation between the BER and frequency

    BER don't have any direct relation with frequency but usually as the frequency increases the BER also increases (in wireless) because of Rayleigh fading (higher freq need Line of sight) etc.
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    BER from Eye Diagram!!!!

    hi , I have plotted the eye diagram using commscope. eyediagram. I want to plot BER from eye diagram(not by using matlab function) for which I need values of mean of 1s and 0s and standard deviation. how can i read these values ? I have a fixed input sequence and have got an output sequence with...
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    10 Band Audio Equalizer in MATLAB

    Hi, I am completely new to MATLAB. I want to design a 10 band audio equalizer in MATLAB. Can anyone help me from where should i start the project and what are the steps I should follow ? If anyone have a starting code plz plz plz send me . . Thanks
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    Software Defined Radio (SDR) Research topics

    Hi Can anyone please tell me some research topics in SDR. I need it for my master research proposal .Something related to OFDM implementation and dynamic spectrum access. Need some specific topic . Thanks
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    balun simulation in CST

    Hello everyone.. Is it possible to include a matching circuitry like balun in my design(monopole antenna below 500MHz) in CST??? if yes how can i add ? Is anyone know some formula about balun . how to calculate no of turns (what parameters it affects) dimensions of ferrite etc... thanks in...
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    Broadband antennas at low frequencies

    I need bandwidth from 150MHz to 400MHz (Continuous )... If I use a balun(Coil) up to what extent it can help ? If i have 60MHz Bandwidth without balun How much can I achieve using balun ? I am using CST microwave studio for simulation . How can I include coil in simulation ?? Any helpful link...
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    Broadband antennas at low frequencies

    Thank you for your reply ... Discone and log periodic are good choices but I also need compact and small size and also high power capability . . .
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    Broadband antennas at low frequencies

    Hel What are different techniques to design a broadband antenna of bandwidth 200MHz in the frequency range below 500MHz??? Is it possible with a monopole antenna ???? How can we use matching circuitry ? will it help ???
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    microstrip Log Periodic Arrays VS CPW VS Single microstrip patch

    Hi Can anyone tell me in designing UWB antennas for RADAR on microstrip which one is the best choice ,LPA,CPW or single microstrip patch ?? What are the advantages of one over the other?? If CPW can give us UWB on a single patch then y Log Periodic Array is used ?? What are the effects of the...
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    Microstrip antenna array elements spacing

    it is Log periodic antenna.. ---------- Post added at 19:02 ---------- Previous post was at 18:56 ---------- Please someone answer help me out ....
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    input impedance at the edge of microstrip patch

    Hi can any one help me out in finding the input impedance of a square microstrip antenna at the edge of the patch ?any tool or formula ?? i m designing antenna at 11 GHz for which i cant use the inset feed of 50 ohms (3mm) becuse the length of antenna decreases from 9 mm .But for inset feed of...
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    Microstrip antenna array elements spacing

    Thanx for your answer... I m using array to achieve wide band. If i use the scale factor it does not give correct results.The spacing given in the paper is not according to the scaled value . I m using ADS momentum for simulation and it takes too much time to simulate over wide band, so if i...
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    Microstrip antenna array elements spacing

    Hello I am designing a microstrip UWB antenna from 3 to 6 GHZ .Actually it is the implementation of a research paper.Can anyone help me how to find the distance between two elements of the array.The values r given but it is not given how to find them ?

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