Search for dissertations about: "interdigital capacitors"

Showing result 1 - 5 of 10 swedish dissertations containing the words interdigital capacitors.

  2. 1. An investigation of normal- and superconducting coplanar structures

    Author : Torsten Martinsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coplanar waveguide series gaps; conformal mapping; interdigital capacitors; coplanar waveguide open ends; high temperature superconductors; effective dielectric constant;

    Abstract : .... READ MORE

  4. 2. Some studies on metamaterial transmission lines and their applications

    Author : Xin Hu; Sailing He; Ferran Martin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; metamaterial; transmission line theory; composite right left-handed transmission line; diplexer; coupler; balun; interdigital capacitor; split ring resonator; Electrical engineering; Elektroteknik;

    Abstract : This thesis focuses mostly on investigating different potential applications of meta-transmission line (TL), particularly composite right/left handed (CRLH) TL, and analyzing some new phenomena and applications of meta-TL, mostly left-handed (LH) TL. Realization principle will also be studied. READ MORE

  5. 3. High Temperature Superconducting and Tunable Ferroelectric Microwave Devices

    Author : Erik F. Carlsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; varactors; tunable microwave circuits; conformal mapping; cryogenic probe station; ferroelectrics; high temperature superconductors; microwave circuits; narrow-band filters; phase-shifter;

    Abstract : This thesis addresses some applications of High Temperature Superconductors (HTS) and ferroelectric materials in tunable microwave devices and circuits. The work is divided into three main areas: i) modeling of multilayered structures including ferroelectric layers, ii) realization and characterization of tunable coplanar waveguides (CPW), capacitors and resonators based on ferroelectrics, and iii) an investigation of microstrip HTS K-band filters. READ MORE

  6. 4. Processing and Properties of Ferroelectric Ag(Ta,Nb)O3 Thin Films

    Author : Jung-Hyuk Koh; KTH; []
    Keywords : Ferroelectric; Thin Film; PLD; Tunable device;

    Abstract : High tunability and low loss tangent of ferroelectric thinfilms offer unique opportunity for the development of variousmicrowave devices. Silver tantalate niobate, which showsexcellent microwave properties, was selected for this study. READ MORE

  7. 5. Processing and On-Wafer Test of Ferroelectric Film Microwave Varactors

    Author : Jang-Yong Kim; Alexander Grishin; Dag Winkler; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; : ferroelectrics; sodium potassium niobates; silver tantalite niobate; barium strontium titanate; thin films; pulsed laser deposition; rf magnetron sputtering; coplanar waveguide; photolithography; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : Microwave materials have been widely used in a variety of applications ranging from communication devices to military satellite services, and the study of materials properties at microwave frequencies and the development of functional microwave materials have always been among the most active areas in solid-state physics, materials science, electrical and electronic engineering. In recent years, the increasing requirements for the development of high speed, high frequency circuits and systems require complete understanding of the properties of materials function at microwave frequencies. READ MORE