6 uppsatser
… in tiny wireless applications raises the demand for an integrated reference oscillator with the same performance as the macroscopic quartz crystal reference oscillators. The main challenge of the thesis is to prove that it is possible to build a MEMS based oscillator that …
… of size andenergy demands.The method uses a primary unit consisting of an oscillator, amplifier and inductive coil thattransfers energy to a secondary unit consisting of a coil, rectifier and voltage regulator. Two typesof oscillators and several amplifier designs were realized …
… of size andenergy demands.The method uses a primary unit consisting of an oscillator, amplifier and inductive coil thattransfers energy to a secondary unit consisting of a coil, rectifier and voltage regulator. Two typesof oscillators and several amplifier designs were realized …
… several drawbacks such as extreme sensitivity to DC offsets, 1/f noise, local oscillator (LO) leakage/radiation, front-end nonlinearity and I/Q mismatch. This implies very high demands on the DCR front-end. The front-end comprises a low-noise amplifier (LNA) and a mixer …
LORA/VHF
… operate in the VHF band instead. In order to achieve this, new coherent local oscillators are required. Different options are suggested and one of them is implemented and analyzed.
En deskriptiv studie av vårdpersonals arbetssätt och förbättringsförslag
… kopplades isär vid omvårdnadshandlingarna när barnet låg i högfrekvent oscillatorisk ventilation. Anledningar till att vårdpersonal kopplar isär ventilatorkretsen vid omvårdnadsrelaterade lägesförändringar identifierades i kategorierna Barnet klarar det, Enklare att utföra …
