NOVEL GREEN'S ANALYSIS FUNCTION DATABASE TECHNIQUE FOR THE EFFICIENT FULL-WAVE OF COMPLEX IRREGULAR (M)MIC-STRUCTURES Werner Wertgen* and Rolf H. Jansen** ABSTRACT An efficient analysis of arbitrarily shaped shielded microstrip circuits using a new spatial Green's function database technique is presented. Generation of the associated large moment method matrix equations is reduced to a few s

MODELING COUPLED LOSSY LINES FOR TIME DOMAIN CAD OF CIRCUITS A.Zounon, ABSTRACT P. Crozat and R.Adde (*) A model of a bus of lossy coupled microstrip transmission lines is developped for direct time domain simulation on IC chips or cards at a low computational cost. It adresses to ohmic losses and lines of equal width and spacing. It is validated using experimental measurements on two and thr

ANALYSIS OF MMIC COMPONENTS INCLUDING THE EFFECT FINITE METALISATION THICKNESS !If OF Dr. C. J. Railton and Prof. J. P. McGeehan ABSTRACT The vast majority of published analyses of microstrip circuits have made the approximation that the strip is infinitely thin. Modern Microwave Monolithic Integrated Circuits (MMIC's) may, however, contain components whose strip thickness are of the order of

GENERALIZED MODELING OF GaAs MESFETS AND MODFETS MEASUREMENTS BASED ON HIGHLY ACCURATE G. Kompa Abstract BROADBAND and M. Schlechtweg A recently defined THLR method for vector network analyzer calibration is used to extract the error-parameters of coax to microstrip transitions with an accuracy hitherto unattained. The scattering coefficients of GaAs FETs such as MESFETs and MODFETs, inst

A MICROSTRIP MODULE BASED ACTIVE ANTENNA DOPPLER TRANSCEIVER J. Birkeland. ABSTRACT and T. Itoh. We present the design and test of a microstrip active transceiver element suitable for use as a CW Doppler module. The circuit consists of a microstrip annulus from which a small section has been removed, resulting in a two-port antenna. This antenna is then coupled to the drains of two FETs th

Impedance Antenna Measurements and Calculations of a Microstrip-Fed Slot on a Multilayered Electrically Thick Dielectric Substrate by R.L. Rogers, D.P. Neikirk, and T. Itoh Abstract: This paper presents impedance calculations and measurements of a microstrip-fed slot antenna fabricated on a layered dielectric substrate as shown in Figure 1. This structure could be very useful for fabricating ima

RADIATION PROPERTIES TRIPLATE-TYPE OF CIRCULARLY POLARISED PLANAR ANTENNA M.HANEISHI * , A.MATUI *, S.SAITO* and Y.HAKURA * ABSTRACT This paper presents the designing techniques and radiation properties of circularly polarised SHF planar arrays composed of triplate-type planar antennas (TPA). In order to verify the performance of this type of array, some test samples were fabricated and tes

SIMPLE FEEDINGTECHNOLOGY FOR STACKED MICROSTRIP ANTENNAS D. Hebe~ling, H.J. Schmitt, T. Ki~chlinde ABSTRACT Simple excitation microstrip bandwidth frequencies. the For on a calculation feeding reason this of feeding of systems have been developed antennas. chance them has been to for for the Stacked the on only done multiple out but calculation. have been microstrip stacked give antennas

DUAL POLARISED MICROSTRIP ANI'ENNA DESIGN FOR A POLARISATION SHIFT KEYING MICROWAVE TRANSPONDER D Smith*, R. L. Jefferson** ABSTRAcr This work describes a novel method odf data transmission by means of polarisation shift keying. It analyses the system performance in terms of S/N ratio and defines the required antenna cross polarisation performance to achieve an acceptable S/N ratio. A theo

MICROWAVE HETEROJUNCTION DEVICES Keiichi Ohata ABSTRACT High quality heterostructures, especially of compound semiconductors have realized superior performance microwave and millimeterwave devices to GaAs MESFETs. Activities on such heterojunction devices in Japan are reviewed and discussed. The works on modulation-doped heterostructure devices, hetero MISFETs, heterojunction bipolar transisto