Essays about: "Relative dielectric constant"
Found 5 essays containing the words Relative dielectric constant.
-
1. Study of different methodologies to determine relative dielectric constant of given substrate using fabrication, modelling and measurement strategies
University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknikAbstract : In this thesis, different methods for measuring the relative dielectric constant is investigated using simulations and experimental approaches. The first method is known as the S-parameter inversion method. In this method formulae is used to calculate the characteristic impedance of the microstrip line from measured S-parameters. READ MORE
-
2. Measurements of resistivity in transformer insulation liquids
University essay from Uppsala universitet/Institutionen för elektroteknikAbstract : This thesis focuses on measuring techniques and results of resistivity in four commercially available insulating transformer oils: mineral oil, ester oil and two isoparaffin oils. Two measuring techniques, the industrially used diagnostic system for electrical insulation IDA and the Labview implemented Triangular Method, are used for resistivity measurements and the techniques are compared, a correction algorithm to the triangular method is suggested. READ MORE
-
3. Design, Build and Test of planar antennae
University essay from Lunds universitet/Institutionen för elektro- och informationsteknikAbstract : Planar antennae have become very popular owing to their relative ease of manufacture and unobtrusive nature (they are conformal to surfaces) especially with regard to certain devices such as smart phones, watches and fitness gadgets. Although the fractional bandwidth of planar antennae is small, the actual bandwidth in absolute terms is high owing to the higher centre frequencies used and proves useful for these applications. READ MORE
-
4. Microwave phantoms for Craniotomy and bone defect monitoring
University essay from Uppsala universitet/Fasta tillståndets elektronikAbstract : To facilitate examination for osteogenesis and follow up after craniotomy similar head models called phantoms are made. The head phantom should emulate the tissues from a real head. This requires that the realistic head phantom have the same electrical properties as relative permittivity (dielectric constant) and conductivity. READ MORE
-
5. Simulation of Phased Arrays with Rectangular Microstrip Patches on Photonic Crystal Substrates
University essay from Institutionen för datavetenskap, fysik och matematik, DFMAbstract : This thesis describes the investigation of photonic crystals as a substrate in microstrip phased array antennas. Alumina with a relative dielectric constant of 9.6 is used as substrate to obtain miniaturization of the components in the high-frequency range. READ MORE