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92602 Advanced High Frequency Techniques
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Danish title: Videregående højfrekvensteknik
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Language: English
Credit points: 5 |
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Prerequisite: 92061
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Recommended semester: 5th semester
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Scope and form: Class lectures and lab-work.
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Examination: Written exam (13-scale)
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Remarks: This course may be cancelled, therefor always check with the contact person before signing on.
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| Contact person: | Erik Sjøntoft, Building 451, Tel. +45 4525 5256, email es@iae.dtu.dk |
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Department: Department of Applied Electronics
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Aim: The aim of the course is to make the student able to:
-understand the theories and methods that are used at high frequencies (including optical frequencies)
-understand the physical mode of operation and the technical construction of the components that are used at high frequencies.
-design, fabricate, and do measurements on microwave circuits, especially circuits that are used in communication systems.
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Contents: Application of Maxwell's equations on integral and differential form. The complex symbolic method for sine time varying fields.
Waves and transmission lines: Characteristic impedance, reflection coefficient, VSWR, phase and group velocity, dispersion, attenuation, skin effect, Lambda4 transformers and bandwidth.
Amplifiers, S-parameters, filters, and directional couplers including examples of their realization in microstrip.
Polarization of a plane wave: linear, circular, and elliptic.
Reflection, refraction, and diffraction. Snell's law of refraction, Fresnel reflection coefficients, Brewster angle. Physical and geometric diffraction theory. Waveguides: Rectangular and dielectric (optical fiber).
Project: Design of microstrip circuits (coupler, filters, amplifiers, etc.) using a PC, layout, and realization of the circuits.
Measurement of S-parameters, bandwidth, etc. at microwave frequencies (GHz).
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