TY - GEN
T1 - Dual-band feedforward linear power amplifier using equal group delay signal canceller
AU - Choi, Heungjae
AU - Jeong, Yongchae
AU - Kenney, J. Stevenson
PY - 2007
Y1 - 2007
N2 - In this paper, the design of a novel dual-band feedforward linear power amplifier (FFW LPA) is presented. The frequencies of operation of the implemented dual-band FFW LPA are the digital cellular (f0=880MHz) band, and the IMT-2000 (f0=2.14GHz) band, which are separated about 1.26GHz. Using high power amplifiers (120W PEP) for commercial basestation application, the IMD cancellation loop shows 20.45dB and 25.04dB suppression for the cellular and IMT-2000 bands, respectively, over a correction bandwidth of 100MHz. From the adjacent channel leakage ratio (ACLR) measurement with CDMA IS-95A 4FA and WCDMA 4FA signal, we obtained 16.5dB improvement at the average output power of 41.5 dBm for digital cellular band, and 18.6dB improvement at the average output power of 4OdBm for IMT-2000 band under simultaneous operation.
AB - In this paper, the design of a novel dual-band feedforward linear power amplifier (FFW LPA) is presented. The frequencies of operation of the implemented dual-band FFW LPA are the digital cellular (f0=880MHz) band, and the IMT-2000 (f0=2.14GHz) band, which are separated about 1.26GHz. Using high power amplifiers (120W PEP) for commercial basestation application, the IMD cancellation loop shows 20.45dB and 25.04dB suppression for the cellular and IMT-2000 bands, respectively, over a correction bandwidth of 100MHz. From the adjacent channel leakage ratio (ACLR) measurement with CDMA IS-95A 4FA and WCDMA 4FA signal, we obtained 16.5dB improvement at the average output power of 41.5 dBm for digital cellular band, and 18.6dB improvement at the average output power of 4OdBm for IMT-2000 band under simultaneous operation.
KW - Dual-band
KW - Feedforward
KW - Power amplifier
UR - https://www.scopus.com/pages/publications/51849151167
U2 - 10.1109/APMC.2007.4555143
DO - 10.1109/APMC.2007.4555143
M3 - Conference paper
AN - SCOPUS:51849151167
SN - 1424407494
SN - 9781424407491
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
BT - 2007 Asia-Pacific Microwave Conference, APMC
T2 - Asia-Pacific Microwave Conference, APMC 2007
Y2 - 11 December 2007 through 14 December 2007
ER -