Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by EdmundZheng

  1. E

    Dipole antenna, balun and impedance matching

    Try to fine tuning of the length of antenna.
  2. E

    Help in plotting antenna Gain Vs Frequency in HFSS

    Right click setup, Create fast frequency sweep.
  3. E

    Inverted-F antenna_Reference or example

    Hi I really donnot understand, if you can use hfss, it will be very easy work. I attach a project, which is not very accurate, just an example. hope help you. Edmund
  4. E

    about hfss port renormalize

    In communication system, 50ohm charecteristic impedance is usually used, so we must renormalized to 50ohm??
  5. E

    how to reduce patch antenna

    reduce directivity of patch antenna add slits or slots to the antenna, make electric current longer. Edmund
  6. E

    hfss coax feed diameters - how to calculate ?

    hfss coax feed diameters depend on dielectric of feed substrate, if you choose air, the ratio of outer and inner diameter is 2.3. Edmund
  7. E

    Inverted-F antenna_Reference or example

    search in this board, if not, send specification to me, and i will construct the model then send to you. Edmund
  8. E

    Simulating only part of a trace in HFSS

    assign two port to sma and microstrip line.
  9. E

    about hfss port renormalize

    Dear all I found that if you renormalize the port impedance to 50ohm, you would get different S11 results though the port impedance was near 50ohm. Can you give me some advice when should I renormalize and what is the reasonable result? Thx in advance! Regards Edmund
  10. E

    who can help me with optical receiver?

    in brief, low sensitivity, narrow dynamic range, two '1' lines
  11. E

    who can help me with optical receiver?

    Hi I am working on an optical receiver, 10gbps. when input power is high, the eye diagram is good, however, when input power is low, the eyediagram is bad. I attach the pics, please help me, any hints will be appreciated. Thx in advance! regards Edmund
  12. E

    Coplanar feed for UWB design using HFSS

    attach your model!
  13. E

    How to convert dBm to dBi

    dbm to dbi antenna is one port device, it is different from two ports device which gain is defined as your description, gain=10db(pout/pin).
  14. E

    radiation efficiency in HFSS

    pls notice real efficiency which is more important in fact, and it consider return loss and other loss. hope it help!
  15. E

    anyone know different IFA and PIFA??

    ifa- inverted f antenna, pifa- planar inverted f antenna
See more

Part and Inventory Search

Back
Top