TY - GEN
T1 - A new predistortion linearizer using low frequency even order IM components
AU - Yang, Youngoo
AU - Woo, Young Yun
AU - Kim, Bumman
N1 - Publisher Copyright:
© 2000 IEEE.
PY - 2000
Y1 - 2000
N2 - We present a new predistortion linearizer using low frequency even-order components. An I/Q balanced modulator is adopted as a generator of the 3rd and 5th order IM(intermodulation) components. It is very compact and could independently control the amplitudes and phases of the IM components. We have analyzed the delay mismatch effect of these predistortion circuits. The result shows that the 5th order IM components are twice as sensitive than the 3rd ones. The predistorter is implemented and tested at the IMT-2000 band. Two tone test results show that the IM3 cancellation is about 23-25 dB and the IM5 is cancelled by about 12-20 dB. The ACPR is improved by more than 11 dB at the broad band CDMA signal with a chip rate of 4.096 Mcps and this improvement is maintained through a broad range of output power level.
AB - We present a new predistortion linearizer using low frequency even-order components. An I/Q balanced modulator is adopted as a generator of the 3rd and 5th order IM(intermodulation) components. It is very compact and could independently control the amplitudes and phases of the IM components. We have analyzed the delay mismatch effect of these predistortion circuits. The result shows that the 5th order IM components are twice as sensitive than the 3rd ones. The predistorter is implemented and tested at the IMT-2000 band. Two tone test results show that the IM3 cancellation is about 23-25 dB and the IM5 is cancelled by about 12-20 dB. The ACPR is improved by more than 11 dB at the broad band CDMA signal with a chip rate of 4.096 Mcps and this improvement is maintained through a broad range of output power level.
UR - https://www.scopus.com/pages/publications/0042345714
U2 - 10.1109/ICMMT.2000.895709
DO - 10.1109/ICMMT.2000.895709
M3 - Conference contribution
AN - SCOPUS:0042345714
T3 - ICMMT 2000 - 2000 2nd International Conference on Microwave and Millimeter Wave Technology
SP - 416
EP - 419
BT - ICMMT 2000 - 2000 2nd International Conference on Microwave and Millimeter Wave Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd International Conference on Microwave and Millimeter Wave Technology, ICMMT 2000
Y2 - 14 September 2000 through 16 September 2000
ER -