A high efficiency feedforward power amplifier (FFPA) with a series diode linearizer for cellular base stations is presented. In order to achieve the highest overall efficiency of an FFPA, an improved pre-distortion diode linearizer has been used and the bias condition of the main amplifier has been optimized. The optimum bias condition has been derived from the overall efficiency analysis of the FFPA with a pre-distortion linearizer. From measured overall performances of the FFPA, efficiency enhancement of the series diode linearizer has been verified. The developed FFPA achieved the efficiency of 10% and output power of 45.6 dBm at 10 MHz offset Adjacent Channel leakage Power Ratio (ACPR) -50 dBc under Wide-band Code-Division Multiple-Access (W-CDMA) modulated 2 carriers signal. This design method can be also used to optimize the source and load impedances condition of the main amplifier FET.
Kenichi HORIGUCHI
Masatoshi NAKAYAMA
Yuji SAKAI
Kazuyuki TOTANI
Haruyasu SENDA
Yukio IKEDA
Tadashi TAKAGI
Osami ISHIDA
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Kenichi HORIGUCHI, Masatoshi NAKAYAMA, Yuji SAKAI, Kazuyuki TOTANI, Haruyasu SENDA, Yukio IKEDA, Tadashi TAKAGI, Osami ISHIDA, "A High Efficiency Bias Condition Optimized Feedforward Power Amplifier with a Series Diode Linearizer" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 12, pp. 1973-1980, December 2002, doi: .
Abstract: A high efficiency feedforward power amplifier (FFPA) with a series diode linearizer for cellular base stations is presented. In order to achieve the highest overall efficiency of an FFPA, an improved pre-distortion diode linearizer has been used and the bias condition of the main amplifier has been optimized. The optimum bias condition has been derived from the overall efficiency analysis of the FFPA with a pre-distortion linearizer. From measured overall performances of the FFPA, efficiency enhancement of the series diode linearizer has been verified. The developed FFPA achieved the efficiency of 10% and output power of 45.6 dBm at 10 MHz offset Adjacent Channel leakage Power Ratio (ACPR) -50 dBc under Wide-band Code-Division Multiple-Access (W-CDMA) modulated 2 carriers signal. This design method can be also used to optimize the source and load impedances condition of the main amplifier FET.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_12_1973/_p
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@ARTICLE{e85-c_12_1973,
author={Kenichi HORIGUCHI, Masatoshi NAKAYAMA, Yuji SAKAI, Kazuyuki TOTANI, Haruyasu SENDA, Yukio IKEDA, Tadashi TAKAGI, Osami ISHIDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={A High Efficiency Bias Condition Optimized Feedforward Power Amplifier with a Series Diode Linearizer},
year={2002},
volume={E85-C},
number={12},
pages={1973-1980},
abstract={A high efficiency feedforward power amplifier (FFPA) with a series diode linearizer for cellular base stations is presented. In order to achieve the highest overall efficiency of an FFPA, an improved pre-distortion diode linearizer has been used and the bias condition of the main amplifier has been optimized. The optimum bias condition has been derived from the overall efficiency analysis of the FFPA with a pre-distortion linearizer. From measured overall performances of the FFPA, efficiency enhancement of the series diode linearizer has been verified. The developed FFPA achieved the efficiency of 10% and output power of 45.6 dBm at 10 MHz offset Adjacent Channel leakage Power Ratio (ACPR) -50 dBc under Wide-band Code-Division Multiple-Access (W-CDMA) modulated 2 carriers signal. This design method can be also used to optimize the source and load impedances condition of the main amplifier FET.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - A High Efficiency Bias Condition Optimized Feedforward Power Amplifier with a Series Diode Linearizer
T2 - IEICE TRANSACTIONS on Electronics
SP - 1973
EP - 1980
AU - Kenichi HORIGUCHI
AU - Masatoshi NAKAYAMA
AU - Yuji SAKAI
AU - Kazuyuki TOTANI
AU - Haruyasu SENDA
AU - Yukio IKEDA
AU - Tadashi TAKAGI
AU - Osami ISHIDA
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2002
AB - A high efficiency feedforward power amplifier (FFPA) with a series diode linearizer for cellular base stations is presented. In order to achieve the highest overall efficiency of an FFPA, an improved pre-distortion diode linearizer has been used and the bias condition of the main amplifier has been optimized. The optimum bias condition has been derived from the overall efficiency analysis of the FFPA with a pre-distortion linearizer. From measured overall performances of the FFPA, efficiency enhancement of the series diode linearizer has been verified. The developed FFPA achieved the efficiency of 10% and output power of 45.6 dBm at 10 MHz offset Adjacent Channel leakage Power Ratio (ACPR) -50 dBc under Wide-band Code-Division Multiple-Access (W-CDMA) modulated 2 carriers signal. This design method can be also used to optimize the source and load impedances condition of the main amplifier FET.
ER -