A NEW INTEGRATED WAVEGUIDE-MICROSTRIP TRANSITION J.H.C. VAN HEUVEN ABSTRACT A new waveguide-microstrip transition is described. This design provides wide-band performance (18-26GHz) and a very good reproducibility without the need for variable elements. The circuit is fully integrated on the substrate and the characteristics are much less sensitive to small variations in the dimensions than o

A NEW CLASS OF HIGH PERFORMANCE COUPLERS IN THIN FILM TECHNIQUE B. Schiek and J. Kohler BROADBAND 3 db DIRECTIONAL Philips Forschungslaboratoritim Germany Hamburg GmbH, 2 Hamburg 54, ABSTRACT It is the purpose of this paper to show that planar broadband 3 db directional couplers can be constructed in microstrip-slot and thin film technique, etching both sides of a ceramic substrate. No overla

MIC BANDFILTERS USING OPEN-RING RESONATORS F.C. de Ronde + and S. Shammas x ABSTRACT Well-known microstrip filters, using /2 straightline resonators, offer problems with integration, viz. 1) their frequency characteristic depends on the packaging; 2) parasitic coupling occurs towards the remainder of the circuit. A usual solution of this problem is either to place the filter in a separate b

EXACT DESIGN OF A CLASS OF PRESCRIBE~LINE-LENGTH FILTERS + MICROWAVE /AND UHF/ BANDPASS Istvan Frigyes ABSTRACT A frequency-transformation is introduced which maps a low-pass ladder network into a ladder of transmission-lines of prescribed length. A non-redundant coupled-line realization is given for prototypes having transmission-zeros either at finite or at infinite fre~ quencies. The desi

BROADBAND, RANGE * FREQUENCY SELECTIVE LIMITERS IN THE 4-16 GHZ S. S. Elliott S. T. K. Nieh R. A. Craig** ABST RACT Passive single crystal, ferrite limiters have been developed in several frequency ranges with instantaneous bandwidths of better than 20%, limiting thresholds of less than +20 dbm, and dynamic ranges of more than 20 db. A compact, travelingwave structure comprised of an arr

RECENT ADVANCES IN RADAR R. Voles ABSTRACT The continuing evolution advances in radar systems. of new components is resulting in corresponding The paper commences with a brief review of some of the basic radar parameters which have been influenced in the recent past by improvements in component technology and an indication is given of the ranges of these parameters which are now available t







MIC RADIATING ELEMENTS AND ARRAYS Michel de VECCHIS ABSTRACT This paper describes radiating elements using microelectronic integrated circuits (MIC) techniques. A method of investigation has been deve10pped,. using liquid crystals which permits to study matching and radiating parameters of tested elements. Performances ments (i.e. either size. of these elements horn), taking into are compared