1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

PCB Materials and Antennas

Discussion in 'Electronic Books' started by quixotron, Jun 12, 2008.

  1. quixotron

    quixotron New Member

    Joined:
    Dec 28, 2007
    Messages:
    269
    Likes:
    13
    Location:
    God Bless America!
    Hello. Most of you know, that I am an antenna engineer. i'm working on some pcb antennas, the permitivity of the board effects the antenna's effective length and impedance bandwidth. the soldermask also detunes the device, since the soldermask layer covers the copper trace an confines the electric and magnetic fields closer to the board , thus allowing current to propagate inside of the dielectric.

    simulating a pcb antenna is a son of a bi+tch! well not really, but i really like to model my devices as accurately as possible, that way i have little manual tuning at fab time and none at production time.

    does anyone recommend any textbooks that list electrical not mechnical, material properties of dielectrics in detail at several frequencies? alot of data sheets and pcb vendors give broad specs at a few frequencies. alot of times, i have extrapolate or even measure the the permitivity of the dielectric to fine tune my model.

    any help will be appreciated.
     
  2. quixotron

    quixotron New Member

    Joined:
    Dec 28, 2007
    Messages:
    269
    Likes:
    13
    Location:
    God Bless America!
    Hi this site and rf global net are really helpful. i got the answer already after much hard work and -35 dBm gain of help from you guys et al.

    i think i understand now, you guys give me the cold shoulder so i could come up with the solution on my own after much frustration and researching, while i should be out clubbing with the guys and getting sweet honies' phone numbers.

    kinda like in last dragon, where leroy's quest to find the master was already within him!

    cruel...but nonetheless instructive.
     
    Last edited: Jun 16, 2008
  3. 3v0

    3v0 Coop Build Coordinator Forum Supporter

    Joined:
    Jul 14, 2006
    Messages:
    9,404
    Likes:
    227
    Location:
    OKLAHOMA USA
    When you ask a question that few if any people have the answer for you may not get a useful reply.

    Think about this. The next time a person needs the info you found he will find your posts on the subject, and they will provide no useful information.

    Share what you learned..... yes?
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. mneary

    mneary New Member

    Joined:
    Feb 27, 2007
    Messages:
    4,502
    Likes:
    67
    Location:
    California USA

    @quixotron: As I mentioned in a PM, I didn't respond because it's evident to me that you know much more about the subject than I do. If that's a cold shoulder, that's your problem not mine. I do possess a broad knowledge, but I've never read books on the subject of PCB antennas. I've read the ARRL Antenna Book several times in hopes that I absorb something, but I don't recall a treatment of PCB antennas.

    If you understand Maxwell's Equations, you are waaay ahead of 99.9999% of the population. Including me.
     
  6. TiagoSilva

    TiagoSilva Member

    Joined:
    Feb 15, 2004
    Messages:
    207
    Likes:
    1
    Location:
    Portugal, Lisbon
    3v0 is right, you are being worst than the ones you say LOL
     

Share This Page