Polar transmitter amplifier with variable output power

作者: Alireza Zolfaghari

DOI:

关键词: Direct-coupled amplifierOperational amplifierAmplifierPhysicsOperational transconductance amplifierLinear amplifierMultistage amplifierElectronic engineeringCascade amplifierRF power amplifierElectrical engineering

摘要: Various embodiments are disclosed relating to wireless systems, and also transmitter amplifiers, such as, for example, polar amplifiers with variable output power. According an example embodiment, a circuit is provided including plurality of selectable amplifier cells. Each cell may receive phase or frequency modulated signal amplitude signal. based upon combination the received if selected. The provide current power selection one more