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Recent content by sugm

  1. S

    generating 10-100 HZ with picmicro

    using sin looking table to generate SPM
  2. S

    Isolation problems in multistage wilkinson power divider

    Re: Isolation problems in multistage wilkinson power divide I use 0603 resistor for 10GHz power divider, the result seems ok(S32 -25db)
  3. S

    Is it possible to find a analog design job in Singapore?

    **broken link removed**,
  4. S

    How to simulate a microstrip antenna array

    very large antenna array theory SONNET is also a chioce
  5. S

    FR4 dielectric constant

    dielectric permittivity of fr408 We use 4.2 for DRO design , it works on 10GHz.
  6. S

    FR4 dielectric constant

    fr4 dielectric 4.2 at 10GHz
  7. S

    Died abnormally problem in HFSS 8.0.25

    try to reinstall your video card driver, I think it's card issue
  8. S

    I need any circuit for "sensor of movement"

    RF doppler sensor can do it
  9. S

    generating other wave with DDS

    dds chip square wave AD9850/51 only can generate a low frequency waveform. For higher frquency, you can select AD9854
  10. S

    What are the available antenna design tools for PCB or 868-915 Mhz bands?

    best omin directional antenna I think all of 2.5D EM tools can't do it
  11. S

    6 Easy Steps to Control EMI

    It's just a PCB design guide
  12. S

    IE3D 10 & FIDELITY 4 - some information

    I don't think it 's worth for wait
  13. S

    Slotted patch antennas - the prototype

    Hi Lupin I am working on X&K band planar antenna array
  14. S

    Transformerless power supply

    microchip transformerless It is usually used for low power supply like battary charger.
  15. S

    What do you think about chips from Chipcon?

    Nordic chip has the similar function.
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