TY - JOUR
T1 - Polar SiGe class E and F amplifiers using switch-mode supply modulation
AU - Kitchen, Jennifer
AU - Deligoz, Ilker
AU - Kiaei, Sayfe
AU - Bakkaloglu, Bertan
N1 - Funding Information:
Manuscript received August 10, 2006; revised December 12, 2006. This work was supported in part by the National Science Foundation under a Graduate Fellowship and by the Connection One Research Center. The authors are with the Connection One Research Center, Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287 USA (e-mail: Jennifer.Desai@asu.edu). Digital Object Identifier 10.1109/TMTT.2007.895407
Funding Information:
Mrs. Kitchen is a National Science Foundation (NSF) Graduate Fellow. She was a Semiconductor Research Corporation Master’s Scholar from 2003 to 2005.
PY - 2007/5
Y1 - 2007/5
N2 - Two integrated polar supply-modulated class E and F power amplifiers (PAs) in 0.18-μm SiGe BiCMOS process are presented. The amplifiers are used to transmit GSM-EDGE signals with an envelope dynamic range of 11 dB and a frequency range of 880-915 MHz. The amplifiers use switch-mode dc-dc buck converters for supply modulation, where sigma-delta (ΣΔM), delta (ΔM), and pulsewidth modulation are used to modulate the PA amplitude signal. A framework has been developed for comparing the three switching techniques for EDGE implementation. The measurement results show that ΔM gives the highest efficiency and lowest adjacent channel power, providing class E and F PA efficiencies of 33% and 31%, respectively, at maximum EDGE output power. The corresponding class E and F linearized amplifiers' output spectra at 400-kHz offset are -54 and -57 dBc, respectively.
AB - Two integrated polar supply-modulated class E and F power amplifiers (PAs) in 0.18-μm SiGe BiCMOS process are presented. The amplifiers are used to transmit GSM-EDGE signals with an envelope dynamic range of 11 dB and a frequency range of 880-915 MHz. The amplifiers use switch-mode dc-dc buck converters for supply modulation, where sigma-delta (ΣΔM), delta (ΔM), and pulsewidth modulation are used to modulate the PA amplitude signal. A framework has been developed for comparing the three switching techniques for EDGE implementation. The measurement results show that ΔM gives the highest efficiency and lowest adjacent channel power, providing class E and F PA efficiencies of 33% and 31%, respectively, at maximum EDGE output power. The corresponding class E and F linearized amplifiers' output spectra at 400-kHz offset are -54 and -57 dBc, respectively.
KW - EDGE
KW - Polar modulation
KW - Power amplifiers (PAs)
KW - Switching amplifiers
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U2 - 10.1109/TMTT.2007.895407
DO - 10.1109/TMTT.2007.895407
M3 - Article
AN - SCOPUS:34248188146
VL - 55
SP - 845
EP - 856
JO - IRE Transactions on Microwave Theory and Techniques
JF - IRE Transactions on Microwave Theory and Techniques
SN - 0018-9480
IS - 5
ER -