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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Um modulador de quadratura SiGe-MMIC de 0.4-5.8 GHz (Q-MOD) que emprega um misturador controlado por corrente própria para rádio cognitivo é descrito. O misturador controlado por autocorrente consiste em um misturador de célula Gilbert e um circuito de controle de autocorrente que é composto por um circuito de realimentação de corrente e um amplificador de buffer de saída. O circuito de controle de corrente automática controla automaticamente a corrente do mixer de acordo com o nível de potência de saída e melhora a linearidade em ampla frequência de rádio (RF) faixa. Os resultados da simulação mostram que a proposta Q-MOD realiza ponto de compressão de 1 dB (P1 dB) melhoria de mais de 3.0 dB em relação ao convencional Q-MOD nas frequências de 0.4, 0.8, 1.95, 5.2 e 5.8 GHz. O fabricado Q-MOD alcança P1 dB melhoria de mais de 2.8 dB sob a mesma condição. Também melhora a potência de saída com magnitude do vetor de erro (EVM) de 3.0% (PFora@EVM=3.0%), e atinge o PFora melhoria de mais de 2.7 dB sob as condições de modulação do sistema sem fio UHF (OFDM/16QAM, 0.4 GHz), W-CDMA (HPSK/QPSK, 0.8 GHz/1.95 GHz) e LAN sem fio (OFDM/64QAM, 5.2 GHz/5.8 GHz).
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Shintaro SHINJO, Fumiki ONOMA, Koji TSUTSUMI, Noriharu SUEMATSU, Mitsuhiro SHIMOZAWA, Hiroshi HARADA, "0.4-5.8 GHz SiGe-MMIC Quadrature Modulator Employing Self Current Controlled Mixer for Cognitive Radio" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 12, pp. 3701-3710, December 2009, doi: 10.1587/transcom.E92.B.3701.
Abstract: A 0.4-5.8 GHz SiGe-MMIC quadrature modulator (Q-MOD) employing a self current controlled mixer for cognitive radio is described. The self current controlled mixer consists of a Gilbert cell mixer and a self current control circuit which is composed of both a current feedback circuit and an output buffer amplifier. The self current control circuit automatically controls the mixer current according to the output power level, and improves the linearity over wide radio frequency (RF) range. Simulation results show that the proposed Q-MOD realizes 1 dB compression point (P1 dB) improvement of more than 3.0 dB compared to the conventional Q-MOD at the frequencies of 0.4, 0.8, 1.95, 5.2 and 5.8 GHz. The fabricated Q-MOD achieves P1 dB improvement of more than 2.8 dB under the same condition. It also improves the output power with error vector magnitude (EVM) of 3.0% (Pout@EVM=3.0%), and achieves the Pout improvement of more than 2.7 dB under the modulation conditions of UHF wireless system (OFDM/16QAM, 0.4 GHz), W-CDMA (HPSK/QPSK, 0.8 GHz/1.95 GHz) and wireless-LAN (OFDM/64QAM, 5.2 GHz/5.8 GHz).
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3701/_p
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@ARTICLE{e92-b_12_3701,
author={Shintaro SHINJO, Fumiki ONOMA, Koji TSUTSUMI, Noriharu SUEMATSU, Mitsuhiro SHIMOZAWA, Hiroshi HARADA, },
journal={IEICE TRANSACTIONS on Communications},
title={0.4-5.8 GHz SiGe-MMIC Quadrature Modulator Employing Self Current Controlled Mixer for Cognitive Radio},
year={2009},
volume={E92-B},
number={12},
pages={3701-3710},
abstract={A 0.4-5.8 GHz SiGe-MMIC quadrature modulator (Q-MOD) employing a self current controlled mixer for cognitive radio is described. The self current controlled mixer consists of a Gilbert cell mixer and a self current control circuit which is composed of both a current feedback circuit and an output buffer amplifier. The self current control circuit automatically controls the mixer current according to the output power level, and improves the linearity over wide radio frequency (RF) range. Simulation results show that the proposed Q-MOD realizes 1 dB compression point (P1 dB) improvement of more than 3.0 dB compared to the conventional Q-MOD at the frequencies of 0.4, 0.8, 1.95, 5.2 and 5.8 GHz. The fabricated Q-MOD achieves P1 dB improvement of more than 2.8 dB under the same condition. It also improves the output power with error vector magnitude (EVM) of 3.0% (Pout@EVM=3.0%), and achieves the Pout improvement of more than 2.7 dB under the modulation conditions of UHF wireless system (OFDM/16QAM, 0.4 GHz), W-CDMA (HPSK/QPSK, 0.8 GHz/1.95 GHz) and wireless-LAN (OFDM/64QAM, 5.2 GHz/5.8 GHz).},
keywords={},
doi={10.1587/transcom.E92.B.3701},
ISSN={1745-1345},
month={December},}
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TY - JOUR
TI - 0.4-5.8 GHz SiGe-MMIC Quadrature Modulator Employing Self Current Controlled Mixer for Cognitive Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 3701
EP - 3710
AU - Shintaro SHINJO
AU - Fumiki ONOMA
AU - Koji TSUTSUMI
AU - Noriharu SUEMATSU
AU - Mitsuhiro SHIMOZAWA
AU - Hiroshi HARADA
PY - 2009
DO - 10.1587/transcom.E92.B.3701
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2009
AB - A 0.4-5.8 GHz SiGe-MMIC quadrature modulator (Q-MOD) employing a self current controlled mixer for cognitive radio is described. The self current controlled mixer consists of a Gilbert cell mixer and a self current control circuit which is composed of both a current feedback circuit and an output buffer amplifier. The self current control circuit automatically controls the mixer current according to the output power level, and improves the linearity over wide radio frequency (RF) range. Simulation results show that the proposed Q-MOD realizes 1 dB compression point (P1 dB) improvement of more than 3.0 dB compared to the conventional Q-MOD at the frequencies of 0.4, 0.8, 1.95, 5.2 and 5.8 GHz. The fabricated Q-MOD achieves P1 dB improvement of more than 2.8 dB under the same condition. It also improves the output power with error vector magnitude (EVM) of 3.0% (Pout@EVM=3.0%), and achieves the Pout improvement of more than 2.7 dB under the modulation conditions of UHF wireless system (OFDM/16QAM, 0.4 GHz), W-CDMA (HPSK/QPSK, 0.8 GHz/1.95 GHz) and wireless-LAN (OFDM/64QAM, 5.2 GHz/5.8 GHz).
ER -