Numerical and experimental analysis in multilayer coupling structures A Dhouib, M G Stubbs and M Lecours* Communications Research Centre, 3701, Carling Avenue, P. O. Box 11490, Station H, Ottawa, Canada, K2H 8S2. *Laval University, Electrical Engineering Department, Quebec, Canada, G1K 7P4. Abstract A novel broadband multilayer stripline coupler consisting of two parallel striplines coupled throu

A comparison of miniature transmission-line media for multi-level MMICs T Gokdemir, U Karacaoglu D Budimir, I D Robertson *Q Wang and A A Rezazadeh. Communication Research Group, *Physical Electronics Research Group, Dept. of Electronic and Electrical Engineering, King's College London Strand, London, UK, WC2R 2LS. TEL: 1 44 171 873 2523 FAX: +44 171 873 2081 email:tacar-orion.eee.kcl.ac.uk Abst

Low loss multilayer coplanar waveguide transmission lines on silicon substrate for MMICs D Budimir, I D Robertson, A H Khalid*, and AA Rezazadeh* Communications Research Group, *Physical Electronics Research Group, Department of Electronic and Electrical Engineering, King's College, University of London, Strand, London WC2R 2LS, United Kingdom. Tel:+44 171 8732889. Fax:+44 171 8732446 email: budim

A novel compact balun structure for multilayer MMICs M Engels and R H Jansen Aachen University of Technology (RWTH), Dept. of El. Engineering, ITHE, Kopernikusstr.16, D-52074 Aachen, Germany. Abstract A novel compact MMIC balun and its design methodology has been developed, and turns out to combine the good balance of a MARCHAND-type balun with the compactness of a MMIC transmission line transfor

High performance doubler monolithic frequency M J030 Rosario and J Costa Freire. Institute das Telecomunica<;6es, Institute Superior Tecnico, Lisboa, Portugal. Abstract Using O.5 µm GaAs MESFET technology, we have implemented a 7.5 to 15GHz monolithic frequency doubler which has a conversion gain of 2dB and a fundamental signal suppression of 20dB for a 5dBm-7.5GHz input signal. A design criteri

A 1.6 GHz low-voltage BiCMOS VCO Timo Knuuttila*, Karl Stadius, Veikko Porra, Kari Halonen Helsinki University of Technology, Institute of Radio Communications, Electronic Circuit Design Laboratory, Otakaari SA, 02150 Espoo, Finland. *Nokia Telecommunications, New Radio Systems, P.O.Box 44, 02601 Espoo, Finland. email: timo.knuuttila-ntc.nokia.com Abstract In this paper a 1.6 GHz Low power VCO cir

Attaining wide tuning range in quasioptical voltage-controlled grid oscillators Wenzhang Wang and L Wilson Pearson. Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915, USA. (864)656-3946 (voice & fax) E-mail: wenzhaw-ces.clemson.edu pearson-ces.clemson.edu Abstract Previous work in voltage-tuned quasi-optical grid oscillators is reviewed from the point o

A digitally controlled microwave oscillator C E Free and C SAitchison* School of Electronic Eng., Middlesex Uni.versity, Bounds Green Road, London, Nll 2NQ, UK. Tel: +44 181 362 5270 Fax:+44 181 362 5287 *Dept of Electrical & Electronic Eng., BruneI University, Uxbridge, Middlesex, UB8 3PH, UK. Tel: +44 1895 274000 Fax: +44 1895 258728 Abstract A new and potentially powerful technique for digital

Design of very low phase noise MMIC reproducible X band DRO P Maurin**, E Laporte*, B Branger*, J C Nallatamby*, D Reffet** and M Prigent* **Thomson-CSF Microelectronique, 29 Av. Camot, 91349 Massy, Cedex, France. *1R COM -U A C N R S, N° 356, 7 rue Jules Valles, 19100 Brive, France. Abstract This paper describes the design, building and measurement of a low-phase noise MMIC DRO using a new desig

Relation between microwave and submillimetre losses in selected ceramic materials S Kamba, J Petzelt, J Pokorny, J Endal and V Koukal Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 180 40 Prague 8, Czech Republic Abstract We have studied the relation between microwave and submillimetre dielectric losses in almost 100 ceramic materials using submillimetre transmissi