Title :
A single-chip dual-mode CW/pulse electron paramagnetic resonance spectrometer in 0.13μm SiGe BiCMOS
Author :
Xuebei Yang ; Seifi, Payam ; Babakhani, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
Microwave circuitry for electron paramagnetic resonance (EPR) spectroscopy is implemented in a 0.13μm SiGe BiCMOS process. The chip can operate in both continuous wave (CW) and pulse modes. The frequency is tunable from 770MHz to 970MHz, corresponding to Zeeman magnetic fields from 28mT to 35mT for a free electron. The CW-EPR absorption line of a DPPH powder sample is acquired. The chip consists of a VCO, a PA, an LNA, a down-conversion mixer, baseband amplifiers, and a pulse generation block.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; circuit tuning; microwave integrated circuits; microwave power amplifiers; paramagnetic resonance; voltage-controlled oscillators; BiCMOS process; CW-EPR absorption line; DPPH powder; EPR spectroscopy; LNA; PA; SiGe; VCO; Zeeman magnetic fields; baseband amplifiers; continuous wave mode; down-conversion mixer; free electron; frequency 770 MHz to 970 MHz; frequency tuning; microwave circuitry; pulse generation block; pulse modes; single-chip dual-mode CW/pulse electron paramagnetic resonance spectrometer; size 0.13 mum; Magnetic field measurement; Magnetic fields; Radio frequency; Resonant frequency; Temperature measurement; Transmitters; Voltage-controlled oscillators; Integrated circuits; Silicon germanium; Spectroscopy;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697718
