2016 Volume 13 Issue 24 Pages 20161033
This paper presents a fully-integrated and compact multi-band and multi-mode power amplifier for commercial quad-band GSM, dual-band TD-SCDMA and mono-band LTE cellular terminals. To reach a compromise among the performance in terms of efficiency, harmonic suppression and miniaturization, a Class-E PA and a linear PA cores are employed with harmonic-trap immersed output matching networks for low and high band, respectively. Experimental results suggest that the PA generated an output power higher than 33 and 30.5 dBm for low and high band, respectively, with considerable PAE across the operating bands when applied CW signals, as well as favorable ACPR performance for GMSK/EDGE, QPSK TD-SCDMA and 10 MHz QPSK TD-LTE signals.
