IEICE TRANSACTIONS on Electronics
A Low LO Leakage and Low Power LO Buffer for Direct-Conversion Quadrature Demodulator
Summary :
A DC offset caused by self-mixing is a serious problem for direct-conversion receivers. Local oscillation (LO) leakage via quadrature demodulators (QDEMOD) must be suppressed in order to achieve a low DC offset. An LO buffer which drives QDEMOD mainly causes the LO leakage. We proposed an LO buffer which has a high-pass frequency response with small occupied area and low current consumption. A QDEMOD using the proposed LO buffer is fabricated using a SiGe BiCMOS process. Measured low LO leakage of -70 dBm is achieved, which is 10 dB lower than that of a QDEMOD with a conventional LO buffer. This measured result indicates that the proposed LO buffer is suitable for QDEMODs for direct-conversion receivers.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E88-C No.6 pp.1212-1217
- Publication Date
- 2005/06/01
- Publicized
- Online ISSN
- DOI
- 10.1093/ietele/e88-c.6.1212
- Type of Manuscript
- Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
- Category
- RF
Authors
Keyword
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Toshiya MITOMO, Osamu WATANABE, Shoji OTAKA, Ryuichi FUJIMOTO, Shunji KAWAGUCHI, "A Low LO Leakage and Low Power LO Buffer for Direct-Conversion Quadrature Demodulator" in IEICE TRANSACTIONS on Electronics,
vol. E88-C, no. 6, pp. 1212-1217, June 2005, doi: 10.1093/ietele/e88-c.6.1212.
Abstract: A DC offset caused by self-mixing is a serious problem for direct-conversion receivers. Local oscillation (LO) leakage via quadrature demodulators (QDEMOD) must be suppressed in order to achieve a low DC offset. An LO buffer which drives QDEMOD mainly causes the LO leakage. We proposed an LO buffer which has a high-pass frequency response with small occupied area and low current consumption. A QDEMOD using the proposed LO buffer is fabricated using a SiGe BiCMOS process. Measured low LO leakage of -70 dBm is achieved, which is 10 dB lower than that of a QDEMOD with a conventional LO buffer. This measured result indicates that the proposed LO buffer is suitable for QDEMODs for direct-conversion receivers.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e88-c.6.1212/_p
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@ARTICLE{e88-c_6_1212,
author={Toshiya MITOMO, Osamu WATANABE, Shoji OTAKA, Ryuichi FUJIMOTO, Shunji KAWAGUCHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Low LO Leakage and Low Power LO Buffer for Direct-Conversion Quadrature Demodulator},
year={2005},
volume={E88-C},
number={6},
pages={1212-1217},
abstract={A DC offset caused by self-mixing is a serious problem for direct-conversion receivers. Local oscillation (LO) leakage via quadrature demodulators (QDEMOD) must be suppressed in order to achieve a low DC offset. An LO buffer which drives QDEMOD mainly causes the LO leakage. We proposed an LO buffer which has a high-pass frequency response with small occupied area and low current consumption. A QDEMOD using the proposed LO buffer is fabricated using a SiGe BiCMOS process. Measured low LO leakage of -70 dBm is achieved, which is 10 dB lower than that of a QDEMOD with a conventional LO buffer. This measured result indicates that the proposed LO buffer is suitable for QDEMODs for direct-conversion receivers.},
keywords={},
doi={10.1093/ietele/e88-c.6.1212},
ISSN={},
month={June},}
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TY - JOUR
TI - A Low LO Leakage and Low Power LO Buffer for Direct-Conversion Quadrature Demodulator
T2 - IEICE TRANSACTIONS on Electronics
SP - 1212
EP - 1217
AU - Toshiya MITOMO
AU - Osamu WATANABE
AU - Shoji OTAKA
AU - Ryuichi FUJIMOTO
AU - Shunji KAWAGUCHI
PY - 2005
DO - 10.1093/ietele/e88-c.6.1212
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E88-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2005
AB - A DC offset caused by self-mixing is a serious problem for direct-conversion receivers. Local oscillation (LO) leakage via quadrature demodulators (QDEMOD) must be suppressed in order to achieve a low DC offset. An LO buffer which drives QDEMOD mainly causes the LO leakage. We proposed an LO buffer which has a high-pass frequency response with small occupied area and low current consumption. A QDEMOD using the proposed LO buffer is fabricated using a SiGe BiCMOS process. Measured low LO leakage of -70 dBm is achieved, which is 10 dB lower than that of a QDEMOD with a conventional LO buffer. This measured result indicates that the proposed LO buffer is suitable for QDEMODs for direct-conversion receivers.
ER -
English
