1. A balanced signal generator for lab on chip dielectrophoresis (DEP) levitation techniques
- Author
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Hassan El-Ghitani, Yehya H. Ghallab, and Mohammed A. Eldeeb
- Subjects
Engineering ,business.industry ,020208 electrical & electronic engineering ,Electrical engineering ,020206 networking & telecommunications ,02 engineering and technology ,Lab-on-a-chip ,Dielectrophoresis ,Chip ,law.invention ,Generator (circuit theory) ,CMOS ,Balanced line ,law ,Current conveyor ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Levitation ,business - Abstract
Dielectrophoresis (DEP) is the phenomenon where a force is exerted on a particle when a non-uniform electric field is applied. It's commonly used in separating cancer cells from healthy cells or separating different strains of bacteria. DEP requires 2 perfectly out of phase signals with matched amplitude for controlling the electrical field. This paper presents a low power balanced signal generator based on the operational floating current conveyor (OFCC) for the use in lab-on-chips that use DEP levitation. The OFCC is a versatile analog current mode building block. The circuit is designed using standard TSMC 90 nm CMOS technology. The circuit consumes 11 μW from a 0.4 V single supply. The total chip area is 0.053 mm2. The generator outputs 2 signals with 0.03 dB difference in amplitude and 5 degrees in phase at 1 MHz. Post layout simulation show that the circuit provides a promising solution for Lab-on-Chip using DEP levitation techniques.
- Published
- 2016
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