Knowledge Centre
Find a document written by the best international scientists in our secure database.
24776 documents found.
An accurate broadband measurement of complex permittivity using microstrip lines
An accurate broadband measurement of complex permittivity using microstrip lines Adam K. Jastrzebski, Andrei D. Chuprin Department of Electronics, University of Kent, Canterbury, Kent, CT2 7NT UK Phone +44 1227 823704; Fax +44 1227 456084; E-mail A.K.Jastrzebski@ukc.ac.uk Abstract- A technique for determining complex permittivity of dielectric materials using VNA measurements of microstrip lines i
Millimeter wave measurements of some low-loss dielectric plates by a novel cut-off circular waveguide method
Millimeter wave measurements of some low-loss dielectric plates by a novel cut-off circular waveguide method Takashi Shimizu Yoshio Kobayashi Dept. Electrical and Electronic Systems, Saitama University Shimo-ookubo 255, Saitama 338-8570, Japan Phone: +81-48-858-3477, Fax: +81-48-857-2529 E-mail: yoshio@reso.ees.saitama-u.ac.jp ABSTRACT An easy-to-treatment technique is proposed to measure low-los
An Accurate and Low Cost Complex Permittivity Measurement System Using a Planar Resonant Sensor
An Accurate and Low Cost Complex Permittivity Measurement System Using a Planar Resonant Sensor E. Fratticcioli, M. Dionigi, R. Sorrentino D.I.E.I of the University of Perugia, Perugia, via G. Duranti 93, 06125 Perugia, Italy fratticcioli@diei.unipg.it, dionigi@diei.unipg.it, sorrent@unipg.it Abstract -- A microwave planar resonant sensor for the measurement of the complex permittivity in compact
Correction and Extraction Techniques for Dielectric Constant Determination Using a Ka-Band Free-Space Measurement System
Correction and Extraction Techniques for Dielectric Constant Determination Using a Ka-Band Free-Space Measurement System Nicolas Gagnon, Jafar Shaker, Pierre Berini*, Langis Roy**, Aldo Petosa Communications Research Centre Canada, 3701 Carling Ave., P.O. Box 11490, Station H Ottawa, Ontario, Canada K2H 8S2, e- mail: nicolas.gagnon@crc.ca * University of Ottawa, 161 Louis-Pasteur St., P.O. Box 450
A Millimeter-wave Tunable Filter Using MEMS Varactors
A Millimeter-wave Tunable Filter Using MEMS Varactors Abbas Abbaspour-Tamijani, Laurent Dussopt and Gabriel M.Rebeiz The Radiation Laboratory, University of Michigan 3228 EECS Building, Beal Avenue, Ann Arbor, MI 48109-2122, USA Phone: 734 763-4185, Fax: 734 647-2106, E- mail: abbasa@engin.umich.edu A mm-wave tunable 3-pole filter was developed using high-Q MEMS varactors on a quartz substrate usi
Novel RF-MEMS capacitive switching structures
Novel RF-MEMS capacitive switching structures X. Rottenberg, H. Jansen*, P. Fiorini, W. De Raedt and H. A. C. Tilmans. * IMEC v.z.w., Division MCP, Kapeldreef 75, B3001 Leuven, Belgium, xrottenb@imec.be Twente Univ., MESA+ Res. Ins., Elec. Eng. Dpt., PO Box 217, 7500 AE Enschede, Netherlands This paper reports on novel RF-MEMS capacitive switching devices implementing an electrically floating met
Ka-Band, MEMS Switched Line Phase Shifters Implemented in Finite Ground Coplanar Waveguide
Ka-Band, MEMS Switched Line Phase Shifters Implemented in Finite Ground Coplanar Waveguide Maximilian C. Scardelletti, George E. Ponchak, and Nicholas C. Varaljay NASA Research Center, 21000 Brookpark Rd., MS 54/5, Brook Park, Ohio, 44135, Tel: 216-433-9704, FAX: 216-433-8705, Maximilian.C.Scardelletti@grc.nasa.gov Abstract: Ka-band MEMS switched line one and two-bit phase shifters implemented in
Investigation of Ground Coplanar Line on RO4003 Substrate 0.51 mm
Investigation of Ground Coplanar Line on RO4003 Substrate 0.51 mm S. Ivanov, V. Peshlov* & N. Stoianov Sofia University, Faculty of Physics, 1164 Sofia, Bulgaria, E-mail: sai@phys.uni-sofia.bg * Sky Gate Bg, 1164 Sofia, Bulgaria, E-mail: peshlov@skygate.bg 50 Ohms Ground Coplanar Waveguide (GCPW) on RO4003 substrate with thickness 0.51 mm is investigated numerically and experimentally. The groundi
A Manufacturing-Oriented 90 GHz Ortho-Mode Transducer for a Polarimetric Experiment
A Manufacturing-Oriented 90 GHz Ortho-Mode Transducer for a Polarimetric Experiment L. Salghetti, R. Vallauri, P. Besso, M. Mongiardo* Telecom Italia Lab (formerly CSELT) via Reiss Romoli, 274 10148 Torino, Italy, luca.salghetti@tilab.com *DIEI, Università di Perugia, I-06100 Perugia, Italy, m.mongiardo@libero.it ABSTRACT An ortho-mode transducer (OMT) operating at 90 GHz, required for a polarime
A Novel Three-Port Power Divider with Compensation Networks for Non-Ideal Isolation Resistor
A Novel Three-Port Power Divider with Compensation Networks for N on- Ideal Isolation Resistor Yukihiro Tahara, Hideyuki Oh-hashi, and Moriyasu Miyazaki Mitsubishi Electric Corporation, Information Technology R&D Center 5-1-1, Of una, Kamakura City, Kanagawa, 247-8501 Japan E-mail: tahara@isl.melco.co.jp Abstract This paper describes a three-port power divider with compensation networks for non-i