Where Can You Go after ELEC 312

Where Can You Go after ELEC 312

WHAT AFTER ELEC 312 ? Design a complex Electronic System as an IC chip? Explore what you can do with the emerging paradigms of Molecular (Nano) Electronics, Carbon Nano Tubes, Quantum dots (by 2030)? System of IC chips in a Mobile Phone (Example)

FERLO Chip (Front End Receiver Local Oscillator) Functions (Partial List) IF1_Mixer: Receives input from a low-noise amplifier (LNA).It is driven by an UHF local oscillator (~900MHz-1200MHz). The IF is in

the range of 80MHz to 120MHz IF2_Mixer: Receives input from the output of IF1_Mixer. Driven by IF2_VCO. The second IF is at 450kHz Functions (Partial -II)

IF2_VCO: It is a voltage controlled oscillator with a tuning range between 40MHz to 120MHz (partly covered in ELEC 312) Limiter Amplifier: A linear amplifier, receiving input

from IF2_Mixer via a band-pass filter at 450 kHz. The gain is high ~90 dB (cascaded basic amplifiers chain with feedback and stability ensured covered in ELEC 311,312) Band Gap: Supplies constant voltage/bias current irrespective of environmental variations (Introduction toAnalog VLSI ELEC 6051)

DC/AC specs-II Wearable Electronics-I Wearable Electronics-II Molecular Electronics-I Sergey E. Lyshevski, Molecular Electronics, Circuits and Processing Platforms, CRC Press, 2008

The designations such as microelectronics, nanoelectronics, molecular electronics etc. should not be ascribed to feature dimensions, but preferably by the relative size of the basic device (i.e., a diode) compared

with the size of the fundamental charge carrier (electron/hole/ion/..) in the device. The ratio of the sizes influences the physics/chemistry of operation and hence emerges new paradigm of analysis and verification. In microelectronic devices, individual molecules and atoms do not depict the overall device physics and do not define the device performance, functionality and capabilities.

Molecular Electronics-II Sergey E. Lyshevski, Molecular Electronics, Circuits and Processing Platforms, CRC Press, 2008

In molecular devices , individual molecules and atoms explicitly define the overall device physics depicting the device performance, functionality, capabilities and topologies. DNA is a charged polymer. Over most of the pH range, the backbone of a DNA polymer carries one free negative charge per base. As an electro-negative molecule, DNA in solution can be moved with electric fields. This technique is called electrophoresis. One of the areas nano-technology is expected to have significant

impact on in terms of paradigm change and large scale economy is nano- electronics. As scaling down of CMOS transistors reaches a limit, the alternatives could be molecular electronics, carbon nanotube-based nano-electronics, single electron transistors, and so on. Nano-wires hold the prospect of fabricating vertical surround gate transistor. Molecular Electronics-III Sergey E. Lyshevski, Molecular Electronics, Circuits and Processing Platforms, CRC Press, 2008

String electronics !! Sergey E. Lyshevski, Molecular Electronics, Circuits and Processing Platforms, CRC Press, 2008 String Electronics- II Sergey E. Lyshevski, Molecular Electronics, Circuits and Processing Platforms, CRC Press, 2008 Atoms (~100 pm dia) contains microscopic

particles like protons, neutrons and electrons. Protons and neutrons form the nucleus (~0.001 pm dia) A hydrogen atom has about 100 pm diameter A string is estimated to have a diameter of ~ 10E(-35) m Thus about 10E(25) strings could fit into the

diameter of a single hydrogen atom! Molercular electronics is likely to progress to atomic and sub-atomic elerctronics and to stringelectronics and further- when?..May be in 1000 ELECTRONICS -II A Come Back!

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