A highly linear dual-band Doherty power amplifier for femto-cell base stations
Authors:
- 1 May 2015
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 0149645X,p. 1-4
Abstract
A power amplifier (PA) for a femto-cell base station should be highly efficient, linear and small. The efficiency for amplification of a high peak-to-average power ratio (PAPR) signal is improved by designing an asymmetric Doherty PA (DPA). The linearity is improved by applying third-order inter-modulation (IM3) cancellation method. For dual-band operation, a tunable switched capacitor is applied. A small size is achieved by designing the DPA using GaN MMIC process. The implemented dual-band DPA delivers a DE of 45.5/41.6%, ACLR of -35.6/-34.5 dBc, and a gain of 15.7/13.2 dB with an average output power of 35.3/33.7 dBm, respectively, for a 7.2 dB PAPR 10 MHz bandwidth LTE signal at 2.3 and 2.65 GHz.Keywords
This publication has 7 references indexed in Scilit:
- A 2.14-GHz GaN MMIC Doherty Power Amplifier for Small-Cell Base StationsIEEE Microwave and Wireless Components Letters, 2014
- Linear Doherty Power Amplifier With an Enhanced Back-Off Efficiency Mode for Handset ApplicationsIEEE Transactions on Microwave Theory and Techniques, 2014
- A Doherty Power Amplifier With a GaN MMIC for Femtocell Base StationsIEEE Microwave and Wireless Components Letters, 2014
- A Wideband and Compact GaN MMIC Doherty Amplifier for Microwave Link ApplicationsIEEE Transactions on Microwave Theory and Techniques, 2013
- Design of Bandwidth-Enhanced Doherty Power Amplifiers for Handset ApplicationsIEEE Transactions on Microwave Theory and Techniques, 2011
- Power Efficiency and Linearity Enhancement Using Optimized Asymmetrical Doherty Power AmplifiersIEEE Transactions on Microwave Theory and Techniques, 2010
- Highly linear three-way Doherty amplifier with uneven power drive for repeater systemIEEE Microwave and Wireless Components Letters, 2006