Search for dissertations about: "microstrip antenna design"

Showing result 1 - 5 of 18 swedish dissertations containing the words microstrip antenna design.

  2. 1. Characterization of artificially soft surfaces and their applications in antenna design

    Author : Zhinong Ying; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dipole antenna; UTD; GPS; broadband antennas; circular polarization; feed; moment method; soft and hard surfaces; surface impeddance; corrugated horn; antennas; multipath effect; microstrip antenna; magnetic coating; spiral antenna; corrugated surface; dielectric loaded surface; ground plane; slot antenna; monopole antenna; helical antenna; choke-ring;

    Abstract : .... READ MORE

  4. 2. Advanced Dual Circularly Polarized Antenna for Automotive Radar Systems

    Author : Zhaorui Zang; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radar; Antenna; polarimetric radar.; automotive; gap waveguide; dual circular polarization; low-profile;

    Abstract : Advanced driver assistance systems (ADAS) promise reliable support for collision avoidance and cruise control. The demand for precise target classification and road surface sensing requires a sensor revolution. In this regard, the automotive radar system is highly expected to collect as much information as possible. READ MORE

  5. 3. Analysis of Conformal Antennas and Periodic Structures

    Author : Silvia Raffaelli; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; method of moments; microstrip; corrugated surface; horn; Floquet; array; periodic; multilayer structure; finite difference time domain; dual-frequency; infinite; spectral domain analysis; conformal antenna;

    Abstract : In the last decades much attention has been paid to the design of high-performance antennas. Accurate control of the radiation properties is very important in electromagnetic engineering applications. READ MORE

  6. 4. Wideband Active and Passive Antenna Solutions for Handheld Terminals

    Author : Peter Lindberg; Anders Rydberg; Anders Pers; Nicholas Buris; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; active antennas; impedance matching; dipole antennas; baluns; slot antennas; microstrip antennas; mobile antennas; multifrequency antennas; antenna proximity factors; receiving antennas; ferrite devices; Teknisk fysik;

    Abstract : This thesis presents solutions and studies related to the design of wideband antennas for wireless handheld terminal applications. A method of electrically shortening the terminal chassis length to obtain resonance at high frequencies has been proposed and evaluated, thereby increasing the antennas impedance bandwidth. READ MORE

  7. 5. Microwave and Millimeter-Wave Monolithic Integrated Circuits in CMOS and GaAs-mHEMT Technologies

    Author : Bahar M. Motlagh; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MMIC; power divider; double-slot antenna; 60 GHz; millimeter-wave; GaAs-mHEMT; CMOS integrated circuits; antenna integration; noise measurement; 100 nm mHEMT technology; balun; capacitor; microstrip line; single-ended; 90 nm CMOS technology; single-balanced; resistive mixer; 210 GHz;

    Abstract : The objective of this work has been to design and characterize microwave and millimeter-wave components and circuits within a 90 nm Si-CMOS process and a 100 nm GaAs-mHEMT process. The work is divided in two parts depending on the technology. READ MORE