Grating Lobe Eliminated Planar Antenna Fed by Folded Oversized-Waveguide at 60 GHz Futoshi Kuroki and Ken-ichi Masaki Kure College of Technology, Inst. of Nat'l Coll of Tech., 2-2-11 Aga-Minami, Kure 7378506, Japan Tsukasa Yoneyama, Tohoku Institute of Technology, 6 Futatuzawa, Taihaku-Ku, Sendai, 9828588, Japan Abstract -- A double-layered folded oversized-waveguide, was developed for a planer an

A Method to Improve Isolation for RFID Applications Jaekwon Kim, Hyunchul Yoon, Jooyong Park, and Jinwook Burm* Dept. of Electronic Engineering and Interdiscplinary Program of Integrated Biotechnology Sogang University Seoul, 121-742, Korea, 82-2-705-8909 burm-sogang.ac.kr Abstract -- The isolation between transmitter and receiver has been a critical problem in a pulse-modulated RFID (Radio Freque

Flat Spiraphase Focusing Lens Alexander Kasyanov Taganrog State University of Radioengineering, Department of Antennas and Radio Transmitters, Nekrasovsky Street, 347928 Taganrog City, Russia, Phone: +7(863)438-8844 Abstract -- The phased array composed from spiral microstrip radiators is considered. This array can be applied as radiation focusing spiraphase lens. The lack of traditional phase shi

Unitary approach to the design of cavity-backed probe-fed antennas C.I. Coman, I.E. Lager and L.P. Ligthart Delft University of Technology, International Research Centre for Telecommunications-Transmission and Radar, Mekelweg 4, P.O. Box 5031, 2600 GA, Delft, The Netherlands, Phone: +31 15 2781034, E-Mails: c.coman-irctr.tudelft.nl / i.lager-ewi.tudelft.nl / l.p.ligthart-irctr.tudelft.nl Abstract-

Characterization of EHM Direct Conversion Transceivers in Ka Band Farnaz Shayegh, Abbas Mohammadi, Abdolali Abdipour Microwave and wireless communication Research Lab., Electrical Engineering Department, Amir Kabir university of Technology (Polytechnic),Tehran, Iran E-mail: abm125-aut.ac.ir Abstract -- A direct conversion modulator-demodulator with even harmonic mixers for fixed wireless applicati

Multiband Behavior of Wideband Sierpinski Fractal Bow-tie Antenna Amir Hossein Yamini1, Mohammad Soleimani2 1 Micromodje Industries Company, Mollasadra Ave., 19936 Tehran, Iran, 98-21-8054783 2 Iran University of Science and Technology, EE Department, Narmak, 16844 Tehran, Iran, 98-21-7491240 similar structure. It is shown that Sierpinski gasket, which is designed as a monopole structure on a f

A Novel Variable-Impedance Microstrip Circuit and Its Application to Direct Antenna Modulation Chang-Sin Son, Jun-Seok Park, Hong-Goo Cho, Jae-Bong Lim School of Electrical Engineering, Kookmin University, 861-1, . Chongnung-dong, Songbuk-gu, Seoul, 136-702, Korea Abstract - In this paper, we proposed a variable-impedance microstrip circuit using varactor diode as a control device. The proposed

Impact Common mode currents on miniaturized UWB antenna performance A. V. Vorobyov, J. H. Zijderfeld, A. G. Yarovoy, L. P. Ligthart International Research Centre for Telecom and Radar, Delft University of Technology, CD 2628 Delft, Netherlands Abstract -- The main goals of this article are investigation of impact of parasitic (common mode) currents on UWB antenna performance and study on possible

Reconfigurable CMOS LNA for Software Defined Radio Using Variable Inductor Hirotaka Sugawara, Yoshiaki Yoshihara, Kenichi Okada, and Kazuya Masu Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259-R2-17 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan. Tel. & Fax. : +81-45-924-5056 E-mail : sugawara-lsi.pi.titech.ac.jp Abstract-- This paper proposes a novel wide-tunable CMOS l

A Design Approach for Radiating Cylindrical Multilayered Structures Munich Bruno Biscontini and Peter Russer University of Technology, Institute for High Frequency Engineering, Arcisstrasse 21, 80333 Munich, Germany , Email:Biscontini-tum.de y Abstract-- We preset an efficient systematic design and optimization approach for cylindrical multilayer conformal antennas. The approach is based on In