PA gain with bias setting and die technology

Discussion in 'General Electronics Chat' started by kim88521, Mar 24, 2014.

  1. kim88521

    Thread Starter New Member

    Jul 27, 2013
    Hello sir,

    I'm just a beginner who is much interested in transistor technology.

    I am using a cellular PA with high/low two gain modes.
    When I asked the supplier how the different gain is implemented, the answer is that it's due to different bias voltage.

    But from my understanding, bias setting impacts the transistor efficiency, not gain,
    gain is more related to transistor β value or external feedback resistors.

    Am I wrong?
    Look forward to your kind explanation.

    Thanks in advance.