Search for dissertations about: "near-field power transfer"

Showing result 1 - 5 of 7 swedish dissertations containing the words near-field power transfer.

2. 1. Optimal Near-field Antenna Apertures in Lossy Media

   Author : Aidin Razavi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimal near-field aperture; near-field focusing; near-field antennas; near-field power transfer; array signal processing.; maximum penetration;

   Abstract : Antennas are traditionally designed for far-field applications such as wireless communications, radar, etc., where the antenna systems interact with other systems and objects which are located in the far-field zone of the antennas. READ MORE

4. 2. Characterization and Design Requirements for Antennas in the Near-field and the Random-LOS Propagation Environment

   Author : Aidin Razavi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polarization-MIMO; Random-LOS; OTA; Antenna measurements; near-field antennas; antenna characterization; MIMO; near-field focusing;

   Abstract : The choice of antenna for a particular application depends on the requirements imposed by that application. These can be, the application's field region (i.e., near-field or far-field), polarization, radiation pattern, radiation efficiency, system throughput, etc. READ MORE

5. 3. Studies On Design of Near-Field Wireless-Powered Biphase Implantable Stimulators

   Author : Yonatan Habteslassie Kifle; Jacob Wikner; Atila Alvandpour; Sebastian Bader; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Portable and implantable electronics are becoming increasingly important in the healthcare sector. One of the challenges is to guarantee stable systems for longer periods of time. If we consider applications such as electrical nerve stimulation or implanted ion pumps, the requirements for, e.g. READ MORE

6. 4. Impact of carrier localization on recombination in InGaN quantum wells with nonbasal crystallographic orientations

   Author : Ruslan Ivanov; Saulius Marcinkevičius; Nicolas Grandjean; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; InGaN; quantum well; semipolar; nonpolar; near-field microscopy; carrier localization; carrier transport; optical polarization; Fysik; Physics;

   Abstract : The modern InGaN technology demonstrates high efficiencies only in the blue spectral region and low current operation modes. The growth of InGaN quantum wells (QWs) on nonbasal crystallographic planes (NBP) has potential to deliver high-power blue and green light emitting diodes and lasers. READ MORE

7. 5. Plasmonics with a Twist

   Author : Robin Ogier; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; plasmonic nanostructures; colloidal lithography; particle spinning; optical tweezers; nanofabrication; nanoparticles; chirality;

   Abstract : This thesis focuses on the exploration of interactions between circularly polarized light and plasmonic nanostructures, and nanoparticles. Polarization is an integral part of light and has a wealth of applications in the modern world. READ MORE