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Recent content by rodv92

  1. R

    SMD component fixture for antenna matching prototyping

    Mainly 1.8 GHz and 2.4 GHz. I was thinking that SMD is the way to go for higher frequencies because of the parasitic effect of the through hole leads, is there a way to mitigate this ? like making a pit and not going "through the pcb" ? thanks.
  2. R

    SMD component fixture for antenna matching prototyping

    I am currently designing an antenna that exhibits a slight capacitative reactance (54 ohm -44j) Since I have crude prototyping tools (a VNA and nothing more than the toner transfer method to make boards at home), I was researching a way to test and replace SMD components on the matching PCB on...
  3. R

    Microstrip Marchand Balun and loop antenna

    Made the design fully parametric natively in HFSS, same results. Tested this time with a dummy load bond wire with a 50 ohm lumped R. (to test odd mode impedance) New HFSS 13 file attached here.
  4. R

    Microstrip Marchand Balun and loop antenna

    I am struggling to understand the behavior of this Marchand balun. Since I am still learning to use HFSS 13 and still learning microwave design, I may have done something not right... This is a simple microstrip Marchand balun that I am trying to adapt to 1.8 GHz f0. I connected a loop to the...
  5. R

    Tuning of varicap diode in a magnetic loop antenna based on modulating signal

    I was wondering if it was possible to remedy to the extremely high Q of magnetic loop antennas in the case of an analog modulation that requires more bandwidth than the Q can offer, and hence produces distortion) That is for transmission of course at very low power (so as not to breakdown the...

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