A 100W High-Efficiency GaN HEMT Amplifier for S-Band Wireless System Arata.Maekawa, Masaki.Nagahara, Takashi.Yamamoto and Seigo.Sano EUDYNA DEVICES INC. Showa-cho Nakakoma-gun Yamanashi-ken 409-3883 JAPAN Abstract We have successfully developed a 100W AlGaN/GaN power amplifier with a bandwidth of 300MHz in S-band, operating at 50V drain bias voltage. This amplifier consists of one HEMT die develo

Small Size 2.4 GHz ISM-Band LTCC Filters with Transmission Zeros. I. Gavela, M.A. Falagán, M. Stadler Epcos OHG, Ceramic components, Siemensstrasse, 43 A-8530 Deutschlandsberg, Austria. phone + 43 3462800 2483, fax +43 3462800385, email: isabel.gavelaperez-epcos.com, manfred.stadler-epcos.com Abstract ­ In this paper the theory of Bandpass filters based on parallel resonators coupled by means of

Novel Circuit Models of Arbitrary-Shape Line: Application to Parallel Coupled Microstrip Filters with Suppression of Multi-Harmonic Responses Marc Le Roy, André Pérennec LEST (Laboratoire d'Electronique et Systèmes de Télécommunication) ­ UMR CNRS 6165. UBO ­ ENSTBr, 6 Av. Le gorgeu, CS 93837, 29238 Brest Cedex 3, France. E-mail: Marc.LeRoy-univ-brest.fr ; Phone: (33) 2 98 01 65 05 ; Fax: (33) 2 9

Highly Integrated 4 x 4 Active Array Transmitter Frontend for Digital Beamforming at 30 GHz Leif C. Stange1, Alexander Geise2, and Arne F. Jacob2 1 2 now with: OHB-System AG, Universitätsallee 27-29, 28359 Bremen, Germany Technische Universität Hamburg-Harburg, Arbeitsbereich Mikrowellentechnik, Denickestr. 22, 21073 Hamburg, Germany GHz and focus on the integration of these circuits into the mod

A 5GHz-Band SiGe-MMIC Quadrature Modulator using a Circular Polyphase Filter for 1Gbps Transmission Kensuke Nakajima1, Noriharu Suematsu1, Keishi Murakami1, Tadashi Takagi1, Hiroyuki Nakase2, Yoji Isota2, and Kazuo Tsubouchi2 Information Technology R&D Center, Mitsubishi Electric Corporation, 5-1-1 Ofuna, Kamakura-city, Kanagawa 247-8501, Japan, +81-467-41-2544 2 Research Institute of Electrical C

Microstrip Bandpass Filters With Dissimilar Resonators for Suppression of Spurious Responses Pu-Hua Deng, Shih-Cheng Lin, Yo-Shen Lin, Chi-Hsueh Wang, and Chun Hsiung Chen Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei 106, Taiwan TEL : 886-2-23635251-ext.221, Fax : 886-2-23638247 E-MAIL: CHCHEN-EW.EE.NTU.EDU.TW Abstrac

The Folded Hybrid Ring and Its Applications in Balance Devices L. Chiu, T. Y. Yum, Q. Xue, and C. H. Chan Wireless Communications Research Center, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, email: 50246038-student.cityu.edu.hk Abstract -- In this paper, a novel folded hybrid ring and its applications have been presented. The hybrid ring are folded for size reduction

Tunable Microstrip Filter with Piezo-moved Ground Electrode Y. Poplavko1, D. Schmigin1, V. Pashkov1, M. Jeong2 and S. Baik2 1 National Technical University of Ukraine, 37, Peremogi Ave, Kiev, 03056, Ukraine Tel. +38 044 411 3905, Fax: +38 044 236 9676, e-mail: poplavko-ieee.org 2 Pohang University of Science & Technology, Pohang 790-784, Republic Korea device is removed and substituted by the clo

Microstrip Resonator with a Ferrite Component: a simplified description T. Nurgaliev, S. Miteva Institute of Electronics BAS, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria, +359 2 7144545 Abstract -- Approximate formulas are considered for describing the transmission characteristics of HTS microstrip resonator structures with a monocrystalline ferrite component and for describing the microwave lo

A Wideband, Wide Angle Scan, Microstrip Array Antenna Element L.-G. Huss1, R. Gunnarsson1, P. Andersson1, R. Erickson1 1 FOI Swedish Defence Research Agency, P.O. Box 1165, SE-58111 Linköping, Sweden, +46 13 378416 this is modelled by enclosing the unit cell of the stripline layers by PEC walls. Advantages of using this type of antenna element include the wide operation bandwidth [1] over a large