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Recent content by James_Zheng

  1. J

    Balun balance ports question

    Hi FvM, Thanks a lot for your reply. The Balun unbalance port connect ceramic antenna, I don't find any phase requirement. So do you think I could ignore N, P pins connection. Best Regards
  2. J

    Balun balance ports question

    Hello All, I have a question about Balun balance ports, balance port1 and port2 are the same? which port could connect RF_N signal and which port culd connect RF_P signal, I couldn't get the information from Balun datasheet. thanks a lot.
  3. J

    Blueteeth antenna short transfer distance

    Thanks for your help. how could I improve chip antenna peformance? do you have any suggestion? Thanks.
  4. J

    Blueteeth antenna short transfer distance

    Hi dharanklhar, Thanks a lot for your response. The antenna is Ceramic Antenna 2450AT18A100E, the Balun and antenna impedence is 50ohm, do you think we also need to redesign matching net? BTW, there is no GND under Antenna, so do you think the GND will impact wire antenna performance? The wire I...
  5. J

    Blueteeth antenna short transfer distance

    Hi all, Currently, I got a problem of Blueteeth antenna short transfer distance issue, the spectrum analyzer shows it could get right frequency band (2.4-2.5G), I try to exchange different type of Balun, no improvement. However, when I use a wire instead of antenna, it improve large. who could...

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