The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Cet article propose une nouvelle configuration d'amplificateur multiport qui utilise des techniques de rétroaction. En général, un amplificateur multiport est utilisé comme transpondeur dans un émetteur satellite. Un amplificateur multiport comprend un réseau matriciel côté entrée N-entrées-N-sorties, N amplificateurs et un réseau matriciel côté sortie N-entrées-N-sorties. Sur la base de cette configuration, d'autres ports indésirables perdent de l'énergie vers le port souhaité dans un amplificateur multiport. Si l'amplificateur de puissance d'une station de base cellulaire utilise un amplificateur multiport, la fuite de puissance provenant des autres ports provoque une dégradation de l'ampleur du vecteur d'erreur. La configuration proposée utilise des amplificateurs à action directe N-parallèles avec un amplificateur multiport comme amplificateur principal. La configuration proposée réduit considérablement les fuites de puissance grâce aux techniques de rétroaction utilisées. Un amplificateur multiport expérimental à quatre entrées et quatre sorties dans la bande 2 GHz est construit et testé. Il atteint un niveau de puissance de fuite de -58 dB, un écart de gain inférieur à 0.05 dB et un écart de phase inférieur à 0.45 degrés. avec une puissance maximale de 35 dBm sur une bande passante de 20 MHz avec une fréquence centrale de 2.14 GHz à température ambiante. L'amplificateur multiport expérimental réduit le niveau de puissance de fuite d'environ 30 dB par rapport à celui d'un amplificateur multiport sans techniques de rétroaction. La configuration proposée peut être appliquée aux amplificateurs de puissance des stations de base cellulaires.
Yasunori SUZUKI
NTT DOCOMO, INC.
Tetsuo HIROTA
Kanazawa Institute of Technology
Toshio NOJIMA
Hokkaido University
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copier
Yasunori SUZUKI, Tetsuo HIROTA, Toshio NOJIMA, "Multi-Port Amplifier with Enhanced Linearity and Isolation Employing Feed-Forward Techniques" in IEICE TRANSACTIONS on Electronics,
vol. E105-C, no. 10, pp. 501-508, October 2022, doi: 10.1587/transele.2022MMP0005.
Abstract: This paper proposes a new multi-port amplifier configuration that employs feed-forward techniques. In general, a multi-port amplifier is used as a transponder in a satellite transmitter. A multi-port amplifier comprises an N-in N-out input-side matrix network, N amplifiers, and an N-in N-out output-side matrix network. Based on this configuration, other undesired ports leak power to the desired port in a multi-port amplifier. If the power amplifier of a cellular base station uses a multi-port amplifier, the power leakage from the other ports causes degradation in the error vector magnitude. The proposed configuration employs N-parallel feed-forward amplifiers with a multi-port amplifier as the main amplifier. The proposed configuration drastically reduces the power leakage using the employed feed-forward techniques. An experimental 2-GHz band four-in four-out multi-port amplifier is constructed and tested. It achieves the leakage power level of -58 dB, a gain deviation of less than 0.05 dB, and a phase deviation of less than 0.45 deg. with the maximum power of 35 dBm over a 20-MHz bandwidth with the center frequency 2.14 GHz at room temperature. The experimental multi-port amplifier reduces the leakage power level by approximately 30 dB compared to that for a multi-port amplifier without the feed-forward techniques. The proposed configuration can be applied to power amplifiers in cellular base stations.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2022MMP0005/_p
Copier
@ARTICLE{e105-c_10_501,
author={Yasunori SUZUKI, Tetsuo HIROTA, Toshio NOJIMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Multi-Port Amplifier with Enhanced Linearity and Isolation Employing Feed-Forward Techniques},
year={2022},
volume={E105-C},
number={10},
pages={501-508},
abstract={This paper proposes a new multi-port amplifier configuration that employs feed-forward techniques. In general, a multi-port amplifier is used as a transponder in a satellite transmitter. A multi-port amplifier comprises an N-in N-out input-side matrix network, N amplifiers, and an N-in N-out output-side matrix network. Based on this configuration, other undesired ports leak power to the desired port in a multi-port amplifier. If the power amplifier of a cellular base station uses a multi-port amplifier, the power leakage from the other ports causes degradation in the error vector magnitude. The proposed configuration employs N-parallel feed-forward amplifiers with a multi-port amplifier as the main amplifier. The proposed configuration drastically reduces the power leakage using the employed feed-forward techniques. An experimental 2-GHz band four-in four-out multi-port amplifier is constructed and tested. It achieves the leakage power level of -58 dB, a gain deviation of less than 0.05 dB, and a phase deviation of less than 0.45 deg. with the maximum power of 35 dBm over a 20-MHz bandwidth with the center frequency 2.14 GHz at room temperature. The experimental multi-port amplifier reduces the leakage power level by approximately 30 dB compared to that for a multi-port amplifier without the feed-forward techniques. The proposed configuration can be applied to power amplifiers in cellular base stations.},
keywords={},
doi={10.1587/transele.2022MMP0005},
ISSN={1745-1353},
month={October},}
Copier
TY - JOUR
TI - Multi-Port Amplifier with Enhanced Linearity and Isolation Employing Feed-Forward Techniques
T2 - IEICE TRANSACTIONS on Electronics
SP - 501
EP - 508
AU - Yasunori SUZUKI
AU - Tetsuo HIROTA
AU - Toshio NOJIMA
PY - 2022
DO - 10.1587/transele.2022MMP0005
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E105-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2022
AB - This paper proposes a new multi-port amplifier configuration that employs feed-forward techniques. In general, a multi-port amplifier is used as a transponder in a satellite transmitter. A multi-port amplifier comprises an N-in N-out input-side matrix network, N amplifiers, and an N-in N-out output-side matrix network. Based on this configuration, other undesired ports leak power to the desired port in a multi-port amplifier. If the power amplifier of a cellular base station uses a multi-port amplifier, the power leakage from the other ports causes degradation in the error vector magnitude. The proposed configuration employs N-parallel feed-forward amplifiers with a multi-port amplifier as the main amplifier. The proposed configuration drastically reduces the power leakage using the employed feed-forward techniques. An experimental 2-GHz band four-in four-out multi-port amplifier is constructed and tested. It achieves the leakage power level of -58 dB, a gain deviation of less than 0.05 dB, and a phase deviation of less than 0.45 deg. with the maximum power of 35 dBm over a 20-MHz bandwidth with the center frequency 2.14 GHz at room temperature. The experimental multi-port amplifier reduces the leakage power level by approximately 30 dB compared to that for a multi-port amplifier without the feed-forward techniques. The proposed configuration can be applied to power amplifiers in cellular base stations.
ER -