Mikrowellenmesstechnik
- Typ: Vorlesung & Übung
- Lehrstuhl: IHE
-
Ort:
Vorlesung: Nachrichtentechnik-Hörsaal (NTI)
-
Zeit:
Vorlesung: Montag, 11:30-13:00, Start 28.04.2025
Übung: Freitag, 8:00-9:30 (Termine: siehe Ilias), Start 02.05.2025 - Beginn: 28.04.2025
- Dozent:
- SWS: 2+1 (Vorlesung + Übung)
- ECTS: 4
- LVNr.: Vorlesung: 2308420; Übung: 2308422
-
Prüfung:
mündlich (ca. 20 min.), Termin individuell nach Vereinbarung
-
Hinweis:
Lecture will be held in english starting from SS 2025.
This lecture covers all fundamental areas of today's high-frequency measurement techniques. Special attention is paid to the description of those measuring systems and methods that are used in modern applications. A one-day excursion to companies that manufacture high-frequency assemblies is offered. The lecture is aimed at students of physics, electrical engineering and information technology.
ILIAS
Online lecture support is provided via the ILIAS learning platform, which can be used after registration with a KIT account. Via ILIAS, participants are provided with materials, can also receive e-mail notifications (e.g. in the event of changes to dates, question times, examination dates, etc.), discuss content-related and organizational questions in a web forum and much more.
The link to the offer is here.
Experimental lecture
One morning at the IHM (North Campus)
- Experiments (demonstration)
- Laboratory tour
- Gyrotron test stand visit
Date to be determined
Prerequisites
Basics of high frequency technology
Scripts/Books
Thumm, M., Wiesbeck, W., Kern, S., Hochfrequenzmeßtechnik-Verfahren und Meßsysteme, BG. Teubner Verlag, Stuttgart, 1997.
Topics covered
Introduction
- Fundamentals of microwave measurement technology
- Frequency and power ranges
- Special features in the microwave range
- Automation
Measurement generators
- Classification
- Signal generator, sweep generator, synthesiser
- Assemblies of measurement generators
- Oscillators, frequency multipliers
- Typical block diagrams and circuits
- Output spectra of the generators
Power measurement
- Basic sources of error
- Measuring transducer
- Calorimeter, bolometer
- Pyroelectric detector, Golay cell
- Schottky diode
- Power measurement on modulated and pulsed microwave signals
Frequency measurement
- Mechanical and digital measurement
- Frequency counter
- Direct measurement, hetherodyne method
- Block diagrams
High frequency spectrum analyzer
- Basic principles
- Block diagram and circuit
- Resolution
- Applications
Measurements in the modulation range
- zero dead time counter
- Measurement of frequency and phase dynamics
- Jitter
Measurement of phase noise
- The basics
- Causes of phase noise
- Direct measurement method
- Phase discriminator method
- Frequency discriminator method
- Allan variance
Linear network analysis
- Structure of network analyzers
- Scalar and vector network analysis
- Time domain reflectometry
- Error model
- Calibration
- Applications