Biomedical Engineering (MEng)
Electrical Engineering 2
- To introduce the students to the basics of integrated technology and its relevance to bioengineering
- To introduce the students to the basic structure and operation of BJT and CMOS devices
- To introduce the students to the structure and operation of simple IC blocks (e.g. current-mirrors, voltage and current-references) needed for implantable devices
- To introduce the students to the basics of single-stage amplifiers (BJT & CMOS)
Learning Outcomes - Knowledge and Understanding
- Appreciation of the significance and limitations of monolithic integration for bioengineering and engineering in general
- BJT and MOS DC and small-signal-AC operation
- Operational role, limitations and design trade-offs of current-mirrors and references
- Design of common-emitter amplifiers
- Appreciation of the significance of an amplifier’s biasing arrangement and the role of DC- and AC- load-lines
Learning Outcomes - Intellectual Skills
- Solve simple (less than ten devices) BJT or MOS DC transistor problems.
- Design (i.e. biasing arrangement and amplification determination) of single stage BJT or MOS amplifiers
- Design of robust current-distributing topologies
- Design of temperature insensitive voltage and current-references.
- DC ORCAD/SPICE simulation of simple transistor topologies
Integrated Technology: historic milestones; lithography; passive components; BJT technology; MOSFET technology; BiCMOS technology; state-of-the art bioengineering examples.
The BJT: structure and operation; small-signal equivalent model;
The MOSFET: structure and operation; small-signal equivalent model;
Basic IC building blocks: Current-mirrors; voltage- and current-references (VT-based, VBE-based & Bandgap);
Single-stage Amplifiers: common-emitter amplifier;
DC- and AC- load lines for BJT- and MOS-based amplifiers; importance of selection of operating point for undistorted amplification;
BE1-HEE1 Electrical Engineering 1
Lectures: 18 hours
Study groups: 10 hours
● Written exam: ; 80% weighting
Rubrics: The exam paper consists of 3 compulsory questions.
Outline answers to past papers will be available
● Lab report: SPICE coursework; 20% weighting; Lab-based SPICE coursework worth 20%
Feedback : Feedback complies with College guidelines and has the form of comments on printed hardcopies of coursework.