论文信息 - A 2.4 GHz CMOS Doherty power amplifier with dynamic biasing scheme

A 2.4 GHz CMOS Doherty power amplifier with dynamic biasing scheme

A watt-level, fully integrated 1:1 Doherty power amplifier with dynamic biasing scheme is demonstrated in 65 nm CMOS. The newly implemented dynamic biasing scheme for sub-PA solves the gain-linearity trade-off of the Doherty PA with enough back-off efficiency improvement, and protects the gate oxide of the sub-PA from over-voltage stress as well. The PA delivers 30.4 dBm of peak output power with maximum 6 points of PAE improvement compared with a class-B PA, and satisfies IEEE 802.11b and 11g spectrum masks at output power levels of 24.3 and 23.2 dBm, respectively, from supply voltage of 3.3 V.

Shoji Otaka | Shigehito Saigusa | Kohei Onizuka | Katsuyuki Ikeuchi

[1] Patrick Reynaert,et al. A 2.4 GHz fully integrated Doherty power amplifier using series combining transformer , 2010, 2010 Proceedings of ESSCIRC.

[2] J. Paramesh,et al. A 90-nm CMOS Doherty power amplifier with minimum AM-PM distortion , 2006, IEEE Journal of Solid-State Circuits.

[3] Patrick Reynaert,et al. CMOS transformer-based uneven Doherty power amplifier for WLAN applications , 2011, 2011 Proceedings of the ESSCIRC (ESSCIRC).

[4] Shoji Otaka,et al. A +30.5 dBm CMOS Doherty power amplifier with reliability enhancement technique , 2012, 2012 Symposium on VLSI Circuits (VLSIC).