Patent ID: 9166534
Filing Date: 2015-10-20
Classification: H03F

Abstract:
1. An apparatus comprising: an amplifier configured to output an amplified signal having a selected power level; a first impedance network coupled to receive the amplified signal at a first impedance network input terminal and generate a first output signal having a first power level at a first impedance network output terminal, the first impedance network configured to load the amplified signal to convert the selected power level to the first power level; a first switch having a first switch input terminal and a first switch output terminal, the first switch input terminal coupled to the first impedance network output terminal, the first switch configured to selectively provide the first output signal at the first switch output terminal; a second switch having a second switch input terminal and a second switch output terminal, the second switch input terminal coupled to the first impedance network output terminal, the second switch configured to selectively provide the first output signal at the second switch output terminal; a second impedance network having a second impedance network input terminal and a second impedance network output terminal, the second impedance network input terminal coupled to the first switch output terminal, the second impedance network configured to selectively receive the first output signal and generate a second output signal having a second power level at the second impedance network output terminal, the second impedance network configured to combine with the first impedance network to load the amplified signal to convert the selected power level to the second power level; and an antenna switch circuit having a first antenna switch input terminal coupled to the second impedance network output terminal and configured to receive the second output signal, a second antenna switch input terminal coupled to the second switch output terminal and configured to receive the first output signal, and an antenna switch output terminal coupleable to an antenna.