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Recent content by sudokubk38

  1. S

    very small sub 1GHz patch antenna

    I remember not clairly that we can define a chip impedance and the gamma in HFSS (located in output variables of result table) by input the equations. And you can simulate again. Best regards.
  2. S

    [moved] 3G and 4G subjects for presentation

    Hi, It should be made: 1. Introduction: History (Life and Mobile Technology: 1G, 2G,...) and Overview and 3G, 4G Releases (Speed DL and UL,...). 2. Architecture of 3G, 4G Mobile Network: Handovers, Devices,... 3. Technologies: Physical Layer, Access Technique, Spreading Process, Coding...
  3. S

    the laboratory mouse 3D model for CST or HFSS simulation

    Hi everyone, Please show me how I can find a file of the 3D model (such as a mouse of laboratory) for importing into the CST or HFSS software. Actually, I am very need to make a co-simulation (including an antenna and the mouse body). Thank you very much for your help!
  4. S

    [SOLVED] the mouse 3D model of laboratory for CST or HFSS simulation

    Hi everyone, Please show me how I can find a file of the 3D model (such as a mouse of laboratory) for importing into the CST or HFSS software. Actually, I am very need to make a co-simulation (including an antenna and the mouse body). :-( Thank you very much for your help!
  5. S

    Lump element in CST...

    Hi, I think that you should find your diode model (SPI file) on internet. After that you can import in CST, and you have a diode for your simulation.
  6. S

    [SOLVED] HFSS air box problem

    Hi, Thanks for your attention. Actually, I have just used HFSS. I want to simulate a microstrip dipole antenna. It's a simulation which I have seen from a document. But I don't see more explains.
  7. S

    [SOLVED] HFSS air box problem

    Hello everyone, I have a question, so I need your helps, please. I don't know that why we can use the two different dimension vacuum box in HFSS for the dipole antenna simulation at 900MHz? And we just add the radiation boundary for one or both box? Thank you very much!
  8. S

    model file of schottky diode SMS7630 in order to import and simulate schematic of CST

    Hi everyone, I am looking for a model file of schottky 7630, please help me. Thank you very much!
  9. S

    Library of shottky diode HSMS 7630 and HSMS 2860

    Hello, I have a problem with simulation the rectifier which using schottky diode HSMS 7630 and 2860. My ADS Agilent don't have the library of this components. Please help me. Thanks you very much!
  10. S

    impedance matching for dipole antenna @ UHF

    Thank you very much! I am researching that. By the way, could you please help me about: "I have a RFID dipole antenna (microstip line), I want to measure input impedance and return loss so that I compare with simulating. But I don't know anyway. Could you please help me?" Thank you in advance!
  11. S

    cst Warning: current settings will probably...capacitive microstrip structure

    Hi, You can click button"Mesh" and decrease "mesh line ratio limit" and click "solve"-"frequency range" to decrease. After that you click button "Transient solver" ang mark in "Adaptive mesh refinement". I hope that is help for you.:))
  12. S

    measure: input impedance and return loss of dipole anten (stype is micrstrip line)?

    I have a RFID dipole antenna (microstip line), I want to measure input impedance and return loss so that I compare with simulating. But I don't know anyway. Could you please help me? Thank you in advance!
  13. S

    impedance matching for dipole antenna @ UHF

    can you please explain clearly, my friend? impedance value of chip is 36-j750 Ohm. when I use stub to impedance matching but input impedance of antenna just increases about 10+j250 Ohm. more than, I must obtain broadband from 860-960 MHz. please help me! thanks very much!
  14. S

    impedance matching for dipole antenna @ UHF

    please help me: I design a dipole antenna RFID tag, I want to increase imaginary part to 750 Ohm. thanks very much!

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