C
Christian Bachmann
Researcher at IMEC
Publications - 47
Citations - 734
Christian Bachmann is an academic researcher from IMEC. The author has contributed to research in topics: Baseband & Phase-locked loop. The author has an hindex of 13, co-authored 43 publications receiving 550 citations. Previous affiliations of Christian Bachmann include Vienna University of Technology.
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Journal ArticleDOI
Low-power wireless sensor nodes for ubiquitous long-term biomedical signal monitoring
TL;DR: This article introduces low-power wireless sensor nodes for biomedical applications that are capable of operating autonomously or on very small batteries and provides a system-level model for WSNs that helps in guiding the power optimization process with respect to various trade-offs.
Proceedings ArticleDOI
13.2 A 3.7mW-RX 4.4mW-TX fully integrated Bluetooth Low-Energy/IEEE802.15.4/proprietary SoC with an ADPLL-based fast frequency offset compensation in 40nm CMOS
Yao-Hong Liu,Christian Bachmann,Xiaoyan Wang,Yan Zhang,Ao Ba,Benjamin Busze,Ming Ding,Pieter Harpe,Gert-Jan van Schaik,G. Selimis,Hans Giesen,Jordy Gloudemans,Adnane Sbai,Li Huang,Hiromu Kato,Guido Dolmans,Kathleen Philips,Harmke de Groot +17 more
TL;DR: This paper presents an ultra-low-power (ULP) fully-integrated Bluetooth Low-Energy(BLE)/IEEE802.15.4/proprietary RF SoC for Internet-of-Things applications and employs a low-voltage digital-intensive architecture.
Proceedings ArticleDOI
24.7 A 673µW 1.8-to-2.5GHz dividerless fractional-N digital PLL with an inherent frequency-capture capability and a phase-dithering spur mitigation for IoT applications
Yuming He,Yao-Hong Liu,Takashi Kuramochi,Johan van den Heuvel,Benjamin Busze,Nereo Markulic,Christian Bachmann,Kathleen Philips +7 more
TL;DR: One of the critical issues of the dividerless digital PLLs, the lack of frequency capture capability without the assistance of an extra power-hungry frequency-locked-loop (FLL), is addressed and mitigated by the proposed digital phase unwrap technique.
Journal ArticleDOI
A 1.3 nJ/b IEEE 802.11ah Fully-Digital Polar Transmitter for IoT Applications
Ao Ba,Yao-Hong Liu,Johan van den Heuvel,Paul Mateman,Benjamin Busze,Johan Dijkhuis,Christian Bachmann,Guido Dolmans,Kathleen Philips,Harmke de Groot +9 more
TL;DR: A fully-digital polar architecture consisting of an all-digital PLL-based frequency modulator and an AM-retiming ΔΣ switched-capacitor PA (SC-PA) achieves more than 10× power reduction than state-of-the-art OFDM TXs.
Proceedings ArticleDOI
A 0.8V 0.8mm 2 bluetooth 5/BLE digital-intensive transceiver with a 2.3mW phase-tracking RX utilizing a hybrid loop filter for interference resilience in 40nm CMOS
Ming Ding,Xiaoyan Wang,Peng Zhang,Yuming He,Stefano Traferro,Kenichi Shibata,Min-Young Song,Hannu Korpela,Keisuke Ueda,Yao-Hong Liu,Christian Bachmann,Kathleen Philips +11 more
TL;DR: This work presents a fully-integrated 0.8V phase-domain BT5/BLE-combo transceiver, including a PHY-layer digital baseband (DBB), and addresses the above-mentioned issues by employing two key techniques: a hybrid loop filter with a loop-delay compensation for DCO side-lobe suppression and an all-digital PLL(ADPLL)-based digital FM interface.