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Recent content by yuppi77

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    Designing feeding for microstrip antenna array

    microstrip antenna array Hi ssue, you could have a feed point branching out to 2 different braches where your phase and amplitude will be the same.
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    What things should a junior RF engineer learn ??

    Hi, Maybe your could start off by understanding your product (eg. the different concepts and designs used ) and at the same time relate it to what you have studied. ;)
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    ask for the information of diodes

    Hi. What about schottky diodes? Thanks.
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    CST error: Inhomogenous material at PML boundary detected

    RE: Simulation Question Hi, I was simulating using C*S*T software and I encounter a message saying "inhomogenous material at PML boundary detected" Could I know what does that mean and how about do I go about solving it? Thanks.
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    How to design patch antenna with a circular polarization?

    Antenna problem Hi Dinone, You might wish to have a look at a book titled "Antenna Theory analysis and design". It might give you a solution.
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    The Smith Chart (for download)

    The Smith Chart Hi all, In order to save some points , you could print out the smith chart from this link. hxxp://www.ee.surrey.ac.uk/Personal/D.Jefferies/smithc.html
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    MSN contacts for RF discussion/problems

    Re: RF discuss It is one of the EM Simulators for RF circuits
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    Is s-parameter simulation of LNA enough?

    simulation for lna Hi, Using the parameters that you stated should be more than enough for designing a LNA. However, you should also take care of what are the critical points that could affect your parameters as there bound to be tolerance in the pcb fabrication, in which the experimental...
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    CST help in the monopole antenna simulation

    monopole antenna cst ports Hi eirp, How do you go about making the port at least 3 meshlines long? Please elaborate. Thanks.
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    Design filter supressing harmonica

    Hi borich_03, I have downloaded both the files but the files are in extension *.mcd ; could I know what software will be able to open the above attachement? Thanks.
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    µ-strip antenna for Monopulse

    Hi max232, To my understanding, if u want to use only an antenna in the monopulse, you wouldn't be able to able to get a sum or differencial in phase. Therefore why for monopulse antenna, they would need 2 antennas. Anyway, at what frequency you designing this monopulse antenna to be...
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    input impedance antenna p@tch

    Hi, First of all, you need to know what is the dielectric you are using & the tangent loss, following that you could use calulate the width of the line. If you know the impedance of the radiating edge and you wish to feed it with a line with 50 ohm, you could use a impedance transformer in...
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    What type of microstrip substrate is usually used for LNA?

    Substrate for LNA Hi Ahmer Saeed, Since you are mentioning about DUROID, you could also look in to 5870. It has a little higher Er & tan loss compared to 5880.
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    How to optimize the width of 50 ou microstrip in HFSS or CST

    Hi burton, I think you do not need to put extra effort just to design a 50 ohm line, because there are many free tools which you could get the width of the 50 ohm line just by entering the specifications that you need.
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    tutorial of mwoffice 2002

    Hi, What kind of operating freq for ur LNA? Thanks
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