A Multi-Level and Multi-Band Class-D CMOS Power Amplifier for the LINC System in the Cognitive Radio Application


In this letter, a multi-level and multi-band Class-D CMOS power amplifier (PA) in a standard 0.18 ¿m CMOS process is presented. Using multiple PMOS devices with control switches, the proposed PA improves efficiency with the multi-level operation. In order to enable the multi-band operation, the proposed PA employs a tunable series resonator. The measured… (More)

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