Niveditha Arumugam

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MEMS-based oscillators offer a silicon-based alternative to quartz-based frequency references. Here, a MEMS-based programmable oscillator is presented which achieves better than 0.5-ppm frequency stability from 40 C to 85 C and less than 1-ps (rms) integrated phase noise (12 kHz to 20 MHz). A key component of this system is a thermistor-based(More)
One hundred and fourteen strains of Pasteurella multocida were isolated from different domestic animals species (cattle, buffalo, sheep, goat, pig, rabbit, dog, cat), avian species (chicken, duck, turkey) and wild animals (deer, tiger, orang utan, marmoset). The serogroups of P. multocida were determined by both conventional capsular serotyping and a(More)
MEMS-based oscillators have recently become a topic of interest as integrated alternatives are sought for quartz-based frequency references. When seeking a programmable solution, a key component of such systems is a low power, low area fractional-N synthesizer, which also provides a convenient path for compensating changes in the MEMS resonant frequency(More)
A MEMS-based clock generator achieves sub-ps jitter in 0.18um CMOS. Key enabling techniques include a 48MHz MEMS oscillator, a reference doubler, a linear XOR-based PFD, a switched-resistor loop filter using accumulation mode NMOS varactors, and native NMOS devices with an RC filter. The overall output at 156.25MHz achieves an integrated phase jitter of(More)
MEMS-based programmable oscillators have emerged as a promising alternative to crystal-based frequency references, with previously reported work demonstrating sub-ps integrated jitter [1]. Here we show frequency stability better than ±0.5ppm from -40 to 85°C, along with Allan Deviation (i.e., long term jitter) better than 0.005 ppm for 0.1, 1, and 10 second(More)
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