Search for dissertations about: "transmission line loss"

Showing result 1 - 5 of 37 swedish dissertations containing the words transmission line loss.

  1. 1. Some Aspects of Advanced Technologies and Signal Integrity Issues in High Frequency PCBs, with Emphasis on Planar Transmission Lines and RF/Microwave Filters

    University dissertation from Stockholm : KTH

    Author : Felix D. Mbairi; Sture Petersson; Shaofang Gong; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal integrity; crosstalk; guard trace; PCB; transmission line loss; high frequency measurement; dielectric; SU-8; electromagnetic bandgap; microwave filter; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Abstract : The main focus of this thesis is placed on high frequency PCB signal Integrity Is-sues and RF/Microwave filters using EBG structures.From the signal Integrity aspect, two topics were mainly discussed. READ MORE

  2. 2. Novel RF MEMS Devices Enabled by Three-Dimensional Micromachining

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Umer Shah; Joachim Oberhammer; Raafat Mansour; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microelectromechanical systems; MEMS; Radio frequency microelectromechanical systems; RF MEMS; Micromachined transmission line; Micromachining; Tuneable capacitor; Switched capacitor; Coupled-line coupler; Tuneable directional coupler; Intermodulation distortion; MEMS varactor; Two-tone IIP3 measurement; Passive components and circuits; Reliability; Magnetic materials; NiFe multilayer composite; Permeability; Permittivity; Micromachined inductors;

    Abstract : This thesis presents novel radio frequency microelectromechanical (RF MEMS) circuits based on the three-dimensional (3-D) micromachined coplanar transmission lines whose geometry is re-configured by integrated microelectromechanical actuators. Two types of novel RF MEMS devices are proposed. READ MORE

  3. 3. High-Speed Electroabsorption Modulators and p-i-n Photodiodes

    University dissertation from Kista : Mikroelektronik och informationsteknik

    Author : Robert Lewén; [2003]
    Keywords : Optical communication; Fiber optic; Electroabsorption modulators; p-i-n photodiodes; transmission line; traveling wave; high-speed; microwave photonics;

    Abstract : This thesis presents methods for optimization ofelectroabsorption modulators (EAM) and p-i-n photodiodes (PD)withrespect to high frequency (HF) performance. Differentreactive matching techniques are investigated such as lumpedmatching and integrated transmission line (TML) layouts includingoperation in the traveling-wave (TW) regime. READ MORE

  4. 4. Energy Saving vs. Performance: Trade-offs in Optical Networks

    University dissertation from Kista : Mikroelektronik och informationsteknik

    Author : Pawel Wiatr; Paolo Monti; Josep Solé-Pareta; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy-efficiency; optical networks; RWA; side-effects; device reliability performance; network performance; operational cost; benefits; loss; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : The energy consumption of communication networks is continuously growing. Many energy saving approaches have been proposed at the device, system, and network level. The most promising way to address this problem is to utilize photonic technologies as much as possible thanks to their low energy consumption per bit performance. READ MORE

  5. 5. Device Technology Based on High Temperature Superconductors and Microwave Breakdown in Gases

    University dissertation from Kista : Mikroelektronik och informationsteknik

    Author : Martin Löfgren; [1995]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; distortion; penetration depth; surface resistance; transmit-receive switch; coupled-grain model; high-power; microwave; pulse; surface impedance; breakdown; propagation; modulator; air; superconductor; transmission line; resonator; coplanar waveguide; plasma;

    Abstract : This thesis deals with two separate fields of microwave technology. The first section treats microwave characterization and applications of high temperature superconducting (HTS) thin films, while the second section treats microwave breakdown in transmit-receive (TR) switches and in air. Within the first section, four main topics are adressed. READ MORE