Course detail
Analog Filter Design
FEKT-BELFAcad. year: 2017/2018
At present, the analog filters become inseparable parts of any complex electronic device. Thus its analysis and design process belongs to the basic bachelor capabilities. This group covers passive filters, active structures, filters which utilize unconventional physical principles (SAW, crystal filters) as well as filters based on some switching mechanism (switched capacitors). From the viewpoint of practical application we are speaking about electronic systems which are able to process signals with frequencies up to 100MHz. In exercises students solve problems of computer-aided analysis and design of the typical filter topologies by using available software (Orcad Pspice, Snap, FilterCAD, Filter Solution, NAF) including filter optimization from different viewpoints.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Learning outcomes of the course unit
Prerequisites
Co-requisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
Course curriculum
2. Transfer functions of the bilinear and biquadratic filtering sections.
3. Passive RC and RLC filters.
4. Design of the passive ladder filters using tabularized parameters.
5. Active elements used in filtering networks, active filters, topologies and cascade synthesis.
6. All-pass filters, properties and different structures.
7. Imittance converters and inverters, synthetic functional blocks, application examples.
8. Filters with switched capacitors, crystal filters, SAW filters, electromechanical conceptions.
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
Recommended reading
Classification of course in study plans
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
Biquadratic RLC filters. Passive filters RC.
High-order RLC filters and design tools of them.
Active elements and functional blocks in filters, modeling of them.
Single-amplifier biquads (LP, BP, HP).
Multiple-amplifier biquads.
Elliptic ARC biquads and band-reject ARC filters.
Design of the high-order ARC filters, cascade synthesis.
ARC filters with functional blocks and synthetic elements.
All-pass filters and correctors.
Switched-capacitor and CCD filters. Current-mode filters.
Electro-mechanic, piezoelectric and PAW filters.
Optimization of designed filters. Tuning and controlling of the filter parameters.
Exercise in computer lab
Teacher / Lecturer
Syllabus
Design of the high-order passive filters. Software NAF.
Optimization of the designed filters.
Comparing of sensitivity of active and passive filters.
Hierarchical modeling of active elements and functional blocks.
Single-amplifier and multiple-amplifier biquads, studying parasitic influences at HF.
Tuning and controlling of filter parameters, improving the value of Q.
Laboratory exercise
Teacher / Lecturer
Syllabus
2. Syntéza jednoduchých filtrů se syntetickými prvky.
3. Měření kmitočtových odezev aktivních filtrů.