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Recent content by Yahia Muhammad

  1. Y

    How to design a hairpin filter using coupled filter?

    Re: Hairpin Filter i hope this document is helpful
  2. Y

    ads transient simulation problems

    can you put a picture to the circuit an measurement set up and the error message.
  3. Y

    Recommend me a beginner's book about RF

    Re: begining RF microwave engineering & Microwave and RF design of wireless systems both by Pozar
  4. Y

    What version of Linux is good for a beginner ?

    Linux begginer i need to start linux so would anybody tell me what version should i start with i downloaded Knoppix is there another version recommended and where can i find tutorial for begginers thank you
  5. Y

    Who will win the African Cup of Nations 2008 (poll)

    Re: CAN 2008[poll] ُEGYPT no question
  6. Y

    Low pass filter design

    what is the range of change of the impedence
  7. Y

    stub matching vs quarter wavelength transmission line

    quarter wave length transformer is used only for real impedance matching but stubs are used for any case
  8. Y

    wireless communication distance?

    check the received signal power and the receiver gain
  9. Y

    patch antenna without ground

    yes balaguru thavamani the resulting antenna was omni directional the radiation pattern is shown in this pic **broken link removed**
  10. Y

    patch antenna without ground

    i found an explanation but i'm not sure it still seems reasonable rempving a part from the ground (usually till the edge of the patch) decreases εeff so band width increases
  11. Y

    patch antenna without ground

    i read about patch antenna band width broadening techniques that removing the groung plane or a part of it can broaden BW please can some one explain why
  12. Y

    Calculation of RFC for 100Mhz RF 10,7MHz IF Mixer?

    i think it's better to use higher than 1uH to get better blocking
  13. Y

    Technical papers about the manufacturing steps of microstrip pcb circuits

    i need technical papers about the manufacturing steps of microstrip pcb circuits thanks
  14. Y

    microstrip fabrication

    i need papers or application notes about the fabrication steps of microstrip circuits like etching , lithography and the precautions to be taken .... etc thanks in advance
  15. Y

    good rf simulation software to learn working of rf circuits

    filter simulator rfsim well you can start with microwave office it's good for beginners the next step should be ANSOFT designer or ADS
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