• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 27
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 42
  • 42
  • 7
  • 7
  • 6
  • 5
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 4
  • 4
  • 4
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Spectral domain analysis of circular microstrip antennas on planar and spherical surfaces.

January 1990 (has links)
by Tam Wai Yip. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1990. / Bibliography: leaves [124]-[127] / ACKNOWLEDGEMENT --- p.i / LIST OF SYMBOLS --- p.ii / Chapter CHAPTER 1 --- INTRODUCTION --- p.1-1 / Chapter CHAPTER 2 --- ANALYSIS OF MICROSTRIP ANTENNA ON A PLANAR SURFACE --- p.2-1 / Chapter 2.1 --- Dyadic Green's function formulation of a double-patch system --- p.2-3 / Chapter 2.1.1 --- Field components --- p.2-4 / Chapter 2.1.2 --- Boundary conditions and dyadic Green's function --- p.2-8 / Chapter 2.2 --- Microstrip antenna with an airgap --- p.2-14 / Chapter 2.3 --- Microstrip antenna with a superstate --- p.2-16 / Chapter 2.4 --- Galerkin's method --- p.2-18 / Chapter 2.5 --- Numerical computation --- p.2-25 / Chapter 2.6 --- Results and discussions --- p.2-30 / Chapter CHAPTER 3 --- ANALYSIS OF MICROSTRIP ANTENNA ON SPHERICAL SURFACE --- p.3-1 / Chapter 3.1 --- Fields in spherical coordinates --- p.3-3 / Chapter 3.1.1 --- solution of scalar Helmholtz equation in spherical coordinates --- p.3-3 / Chapter 3.1.2 --- Vector potentials --- p.3-6 / Chapter 3.2 --- Cavity model approach --- p.3-10 / Chapter 3.2.1 --- Formulation of radiation patterns --- p.3-11 / Chapter 3.2.2 --- Results and discussions --- p.3-23 / Chapter 3.3 --- Spectral domain approach --- p.3-39 / Chapter 3.3.1 --- General formulation --- p.3-39 / Chapter 3.3.2 --- Complex resonant frequency --- p.3-48 / Chapter 3.3.3 --- Far field radiation pattern --- p.3-51 / Chapter 3.3.4 --- Current distribution --- p.3-52 / Chapter 3.3.5 --- Limiting case of thin dielectric --- p.3-58 / Chapter 3.3.6 --- Results and discussions --- p.3-63 / Chapter CHAPTER 4 --- CONCLUSIONS --- p.4-1 / REFERENCES / Chapter APPENDIX I --- ASSOCIATED LEGENDRE FUNCTIONS / Chapter APPENDIX II --- SPHERICAL BESSEL FUNCTIONS / Chapter APPENDIX III --- VECTOR LEGENDRE SERIES / Chapter APPENDIX IV --- RESONANT FREQUENCY RELATION FOR THIN DIELECTRIC / Chapter APPENDIX V --- LIST OF PUBLICATIONS THAT ARE PRODUCED BY THE STUDIES
12

Experimental studies of small antennas for mobile communications.

January 1994 (has links)
by Shu-chuen Lee. / "Revised : September 1994." / Thesis (M.Phil.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 61-62). / Acknowledgment --- p.i / Lists of Illustration --- p.ii / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- References --- p.4 / Chapter Chapter 2 --- The Meandering Inverted-F Antenna --- p.5 / Chapter 2.1 --- Evolution of the antenna --- p.6 / Chapter 2.2 --- The first prototype --- p.10 / Chapter 2.2.1 --- Geometry of the first prototype --- p.10 / Chapter 2.2.2 --- Resonant frequency --- p.12 / Chapter 2.2.3 --- Bandwidth --- p.16 / Chapter 2.3 --- Antenna with longer meandering line --- p.17 / Chapter 2.4 --- Antenna loaded with dielectric substrate --- p.20 / Chapter 2.4.1 --- Frequency characteristics --- p.21 / Chapter 2.4.2 --- Radiation pattern measurements --- p.22 / Chapter 2.4.3 --- Radiation patterns --- p.26 / Chapter 2.5 --- The 1.9GHz antenna --- p.34 / Chapter 2.6 --- Summary --- p.36 / Chapter 2.7 --- References --- p.37 / Chapter Chapter 3 --- The Meandering Posted Microstrip Antenna --- p.38 / Chapter 3.1 --- Introduction --- p.39 / Chapter 3.2 --- Theory --- p.40 / Chapter 3.3 --- Meandering Inverted-F antenna implemented on PCB --- p.44 / Chapter 3.3.1 --- Geometry for the antenna --- p.44 / Chapter 3.3.2 --- Microstrip bends --- p.45 / Chapter 3.3.3 --- Frequency characteristics --- p.47 / Chapter 3.3.4 --- Implementation of the microstrip antenna with different line width --- p.49 / Chapter 3.3.5 --- Radiation patterns --- p.51 / Chapter 3.4 --- Physical realization --- p.58 / Chapter 3.5 --- Summary --- p.60 / Chapter 3.6 --- References --- p.61 / Chapter Chapter 4 --- Conclusions --- p.63
13

Analysis and design of cylindrically conformable microwave phased array antennas for hyperthermia applications

Najafabadi, Reza M. 05 1900 (has links)
No description available.
14

Development of MEMS microwave switches with application to reconfigurable integrated antennas /

Rose, Jason January 1900 (has links)
Thesis (M. App. Sc.)--Carleton University, 2003. / Includes bibliographical references (p. 99-100). Also available in electronic format on the Internet.
15

Design, characterization, and fabrication of microwave and millimeter-wave antennas

Hwang, Timothy H. January 2007 (has links)
Thesis (M.E.E.)--University of Delaware, 2006. / Principal faculty advisor: Dennis W. Prather, Dept. of Electrical and Computer Engineering. Includes bibliographical references.
16

An efficient representation for the planar microstrip Green's function /

Choi, Ikguen January 1986 (has links)
No description available.
17

An environmental model for calculating the antenna temperature of earth based microwave antennas /

Lambert, Kevin M. January 1987 (has links)
No description available.
18

Electromagnetic resonant behavior of a confocal spheroidal cavity system in the microwave region

January 1951 (has links)
J.C. Simons, J.C. Slater. / "May 31, 1951" / Bibliography: p. 3. / Army Signal Corps Contract No. W36-039-sc-32037 Project No. 102B. Dept. of the Army Project No. 3-99 10-022.
19

Microwave beam-shaping antennas

January 1947 (has links)
by L.J. Chu. / "June 3, 1947." / Army Signal Corps Contract No. W-36-039 sc-32037
20

Plane wave, pattern subtraction, range compensation for spherical surface antenna pattern measurements

Leatherwood, Daniel Aaron 08 1900 (has links)
No description available.

Page generated in 0.0731 seconds