TY - GEN
T1 - A 4-antenna transmitter in 0.18μm CMOS using space-time block codes
AU - Neihart, Nathan M.
AU - Cheng, Kuang Wei
AU - Walling, Jeffrey S.
AU - Sangmin, Yoo
AU - Allstot, David J.
PY - 2009
Y1 - 2009
N2 - Efficient power delivery is a challenge in many RF systems. The use of space-time block codes as a means for reducing the required output power of the power amplifier and thereby improving the system efficiency is described. The first implementation of a fully-integrated 4-antenna transmitter based on space-time block codes is described. It is fully configurable as a 1-, 2-, 3-, and 4-antenna system to investigate the tradeoffs between space-time block code length and overall system efficiency. It is shown that the measured optimum is a 3-antenna system capable of delivering +27.7 dBm into a 50 Ω load using three class-AB power amplifier cells each delivering +20 dBm into 50 Ω with a PAE of 23%. Owing to the space-time block coding gain, the overall PAE of the 3-channel transmitter delivering +27.7 dBm is 39%. The system is intenerated in 0.18μm CMOS and measures 4mm x 6mm.
AB - Efficient power delivery is a challenge in many RF systems. The use of space-time block codes as a means for reducing the required output power of the power amplifier and thereby improving the system efficiency is described. The first implementation of a fully-integrated 4-antenna transmitter based on space-time block codes is described. It is fully configurable as a 1-, 2-, 3-, and 4-antenna system to investigate the tradeoffs between space-time block code length and overall system efficiency. It is shown that the measured optimum is a 3-antenna system capable of delivering +27.7 dBm into a 50 Ω load using three class-AB power amplifier cells each delivering +20 dBm into 50 Ω with a PAE of 23%. Owing to the space-time block coding gain, the overall PAE of the 3-channel transmitter delivering +27.7 dBm is 39%. The system is intenerated in 0.18μm CMOS and measures 4mm x 6mm.
UR - https://www.scopus.com/pages/publications/70350223676
UR - https://www.scopus.com/pages/publications/70350223676#tab=citedBy
U2 - 10.1109/RFIC.2009.5135558
DO - 10.1109/RFIC.2009.5135558
M3 - Conference contribution
AN - SCOPUS:70350223676
SN - 9781424433780
T3 - Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
SP - 361
EP - 364
BT - Proceedings of the 2009 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2009
T2 - 2009 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2009
Y2 - 7 June 2009 through 9 June 2009
ER -