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Recent content by zzj

  1. Z

    Help me with my HPA design

    HPA need help I want to design HPA(1GHz to 1.2GHz,P-1>40W).I use the mrf9045,mrf9060 and mrf286,but the result is bad(I found the power gain flatness is very bad,the output P1dB is less 40w from 1GHz to 1.2GHz ).who can tell me the reason. thanks!
  2. Z

    Looking for a specific RF power transistor

    Re: RF POWER TRANSISTOR Thanks! I want to use broadband rf trnsistor (such as mrf284).I don't konw the LDMOS ( UGF18060) which can use from 1GHz to 2GHz.THE UGF18060 is internally matched from 1.8GHz to 1.85GHz.
  3. Z

    Looking for a specific RF power transistor

    RF POWER TRANSISTOR I want to search the RF POWER TRANSISTOR ( P_1dB>45W,Vdd=24V,F(1GHz TO 2GHz)). It's difficult to find the transistor for me ,could you tell me the transistor?thanks!
  4. Z

    U/V hpa design - advice needed

    U/V hpa I want to design the U/V(200~400MHz) hpa, Can you give me some advice ? thanks you!
  5. Z

    Issues with high imd3 while using mrf9085

    THANKS! I measured the ACPR,It's OK!But the IMD3 is OK when it's output power is 8w. Did you use the mrf9085?could you help me? thanks!
  6. Z

    Issues with high imd3 while using mrf9085

    mrf9085 Hi I am useing the mrf9085 to do cdma hpa(10w).but i found it's imd3 is very high.i can't work out. could you help me? thanks
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