29 GHz RADIO SYSTEMS FOR LOCAL DISTRIBUTION NETWORK S A Mohamed* and P G Wilson* ABSTRACT Radio systems have been extensively used in the UK trunk network for Transmission of broadcast TV and telephony on intercity routes. With the advent of new broadband services such as visual conferencing from customers' premises and the continuing demand for private data and telephony circuits, the use of

INTEGRATED FIN-LINE MM-WAVE TRANSCEIVER E. Kpodzo*, L. Szabo**, E. Jensen***, K. Schunemann*** ABSTRACT A simple and compact transmitter-receiver is described, which has been realized in integrated fin-line. Its applications are in small to moderate capacity links like automotive radars, traffic control or cordless telephones. 

35 GHZ VARACTOR-TUNED FIN-LINE GUNN-OSCILLATOR K. Solbach* ABSTRACT A very compact fin-line oscillator circuit design is presented that combines high circuit with easy implementation of a tuning-varactor. width with ~ 2 dB power variation was achieved with power variation from 35 to 40 mW. of simple efficiency 1 GHz tuning and 700 MHz 

COMPUTER-AIDED DESIGN OF ACTIVE FIN-LINE CIRCUITS H. El Hennawy* and K. Schlinemann* ABSTRACT A computer-aided design procedure is presented for active mm-wave circuits in integrated fin-line. Gunn-elements and IMPATT diodes are treated in free-running oscillators, stabilized local oscillators, injection-locked amplifiers, and electronically tuned oscillators. The theoretical results are pa

MM-WAVE FIN-LINE OSCILLATOR WITH ELECTRONIC MATCHING AND TUNING K. Erichsen*, K. Schlinemann*, H. El Hennawy* ABSTRACT A Gunn element, two varactor diodes, and a coupler have been integrated on a common substrate. Thus the circuit can be electronically matched and tuned. Applications are a constant-power VCO, a PSK- and an AM-modulator. 

CALCULATION OF DISCONTINUITIES THICKNESS IN GROUNDED AND THE FINLINES TAKING INTO ACCOUNT THE METALLIZATION INFLUENCE OF THE MOUNT-SLITS A. Beyer* ABSTRACT Discontinuities in grounded fin lines are investigated theoretically, taking into account the finite metallization thickness and the effect of the longitudinal mount-slits. Numerical results are given for discontinuities in unilateral

CHARACTERISTIC IMPEDANCE OF FIN-LINES A.M.K. Saad* and K. Schunemann* ABSTRACT A simple method is outlined to calculate the characteristic impedance of both unilateral and bilateral fin-lines. The results agree well with measurements reported in the literature. The characteristic impedance is related to slot width, location of the slot, relative dielectric constant, and frequency. Results con

PLANAR MULTIPORT NETWORKS WITH ROTATIONAL SYMMETRY Sven Hagelin and Borje Carlegrim ABSTRACT An investigation concerning the scattering properties of large planar multiport networks ( 2 -32 ports) with rotational symmetry has been performe~ Excellent agreement between theoretical and experimental data, amplitude as well as phase, has been achieved. The results are useful for the analysis

FEED SYSTEM FOR SPHERICAL ANTENNA ARRAYS WITH AMPLITUDE CONTROL G. Seehausen* ABSTRACT A feed system for spherical antenna arrays is introduced. In order to reduce the side lobe level by using an amplitude taper the feed system is designed to steer the driving power to each antenna element. The components of the feed network are described and radiation patterns of the antenna system are

EVOLUTION OF MULTIPLE-BEAM ANTENNA DESIGN FOR INTELSAT SATELLITES C. C. HAN* - ABSTRACT An offset reflector antenna fed by a horn array feed is employed by INTELSAT to achieve multiple frequency re-use via spatial and polarization isolation among various coverage beams. As the satellites evolve from INTELSAT-V to INTELSAT-VI, the basic multiple beam antenna configuration remains the same.