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Recent content by ckJJ

  1. C

    DC/DC application design

    Hi hi, If I use the DC/DC output of a buck converter to supply to the input of another DC/DC buck converter, will this affect the performance of the 2nd DC/DC converter output? Thanks.
  2. C

    Inductor on Buck DC/DC converter

    Hihi, Are there any difference in using chip inductors and power coil inductors on Buck DC/DC converter? Thanks.
  3. C

    What is the difference between SPICE and Pspice simulation?

    What is the difference between SPICE and Pspice simulation? Or are they similar? Thanks. :D
  4. C

    Efficiency of DC/DC Converter

    How is the power efficiency of a DC/DC converter (step-down or step-up) determined? Is it Efficiency= (Vout × Iout) ÷ (Vin × Iin) ??
  5. C

    PCB Antenna Simulation

    For IE3D, it defines an infinite ground plane. Will this affect the accuracy of the result?? Thanks.
  6. C

    PCB Antenna Simulation

    pcb antenna simulation Hi hi, I would like to design and simulate a printed/PCB antenna for 2.4GHz application to find out its performance. I am thinking of using either IE3D or HFSS. Which one would give a more accurate simulation results closer to the actual? Thanks. :D
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    Guidelines for designing PIFA antenna

    Is there any guidelines/techniques/method for designing PIFA antenna? How does the dimension/shape relates to the resonant frequency and bandwidth?? Thanks.
  8. C

    Planar Metal Antenna design

    For a start to design, what parameter should be look at? the surface area?
  9. C

    RF Choke for DC biasing

    For DC biasing for power amplifiers or diode switches, Inductors are often used as RF choke. How do we decide the value of inductor to use for the RF choke?
  10. C

    Planar Metal Antenna design

    Hi all, Is there any design guidelines for planar metal antenna?? Thanks.
  11. C

    Sensitivity of RF Receiver

    Thanks estradasphere. Is there any equations or methods that can be used to find out the receiver sensitivity theoretically?
  12. C

    Sensitivity of RF Receiver

    Hi all, How can we determine the sensitivity of a RF receiver? Thanks.
  13. C

    Looking for textbook about audio circuit design

    Hi everyone, Are there any good textbooks/references on audio circuit designs? Thanks.
  14. C

    Can a small piece of metal sheet by used as an antenna?

    Hi hi, Can a small piece of metal sheet by used as an antenna?? Thanks.
  15. C

    Placement of antenna on circuit

    Hi, Does placement of antennas near other circuit components like inductors and crystal oscillators have an effect on the radiation efficiency and other performances of the antenna? Thanks. ckJJ

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