ARCHITECTURE HIGH SPEEDSTATE QAM CONSIDERATION ADAPTIVELY TRANSMISSION AND PERFORMANCE ANALYSIS OF COHERENT DEMODULATOR FOR MULTI- Chel illitC", F. MeiqiIC" lid XiolC Fei.. ABSTRACT An advanced architecture of high joint estimation and equalization lator included controls for path fading. speed multi-state coherent demodulator carrier recovery is introduced. the with demodu- the adaptive

PERFORMANCE LIMITS OF AUTOMATIC GAIN CONTROL IN AM MICROWAVE SYSTEMS T. Farag6~ ABSTRACT The behaviour of an automatic gain control system is analysed in the presence of deterministic input signals. The response of the system to a single modulated signal is calculated by solving a linear first-order differential equation with periodically varying coefficient. The steady-state response is obtai

A NEW METHOD FOR ANALYSISING THE OPTICALLY Wu KeQln* CONTROLLED DIELETRIC RESONATORS Xu Demlng*. ABSIBACI Song Llepu*. Using an equivalent network representation of the optically control led dielectric resonators. the transverse-resonance technique and an approximate method of circuit theory. a new method Is developed for computing the resonant frequencies of the resonators. The results are

OPTICS CONTROL MICROWAVES: . THE NEXT STEP S S GEVORGYAN ABSTRACTS A brief review of optical interactions in semiconductors from the point of view of optical control microwave device is given. Problems of optimiz ation of microwave devices on semiconductor substrate (to meet the optical control) are discussed. The use of integrated optic [ 10] thin film waveguides and devi ces as "optical bia

MICROWAVE DIFFRACTION TOMOGRAPHY USING SCATTERED FAR FIELD AND INCOMPLETE DATA S KENT*, B YAZGAN*, S PAKER*, C ISIK* ABSTRACT In this paper a simple Fourier reconstruction algorithm is presented. In order to see the effectiveness of this algorithm electromagnetic far field scattered data of a dielectric object illuminated by a circular antenna array is considered. Two layered cylinder havi

TRACKING WITH SYSTEM FOR SATELLITE COUPLING GROUND OF TE01 STATION ANTENNAS MODES FIELD-SELECTIVE AND TM01 E. Schuegraf, Antenna Development of SIEMENS AG, Munchen-Unterschleissheim Abstract - A TE and a TM 01 tracking mode coupler both with TEll excluding 01 coupling are integrated in wideband DM T'S for the 11/12/l4-GHz ranges resp. for the 20/30 GHz ranges. 

IMPROVED EXTRAPOLATION METHODS FOR ANTENNA GAIN MEASUREMENTS. + E. Van Lil *, P. Govaerts, A. Van de Capelle ABSTRACT Several methods for accurate gain extrapolation from near-field measurements have been developed by Newell et all[l,2]. They are based on the fact that data obtained by moving two antennas relative to each other can be extrapolated. In this paper two different methods are

2-11 GHz DUAL POLARIZATION ANTENNA FOR TERRESTRIAL RADIO LINKS D. Savini, P. Bielli (") ABSTRACT The paper presents the design criteria and the electrical characteristics of a terrestrial radio link antenna operating simultaneously, with dual linear polarization, at 2 and 11 GHz frequency bands. The antenna consists of a 4m parabolic reflector with a double grid shaped dichroic subreflector which

A MULTIMODE FEED SYSTEM FOR ANGLE DIVERSITY OPERATION IN TWO POLARIZATIONS U. Mahr*, G. Morz* ABSTRACT A new feed system is presented providing dual polarized angle diversity operation of microwave links. It requires only one feed horn to generate the two main and two diversity beams, due to the utilization of higher order modes. First experimental results are provided for a feed system which has

A REV DESIGN FOR A MULTIBAND DIELECTRIC RODS AS RADIATING FEED SYSTEM ELEMENTS. USING P. Vita, L. Manoli 2 1 ABSTRACT A multiband dual linear polarized feed system to be used on earth station antennas for propagation experiments has been developped, operating simultaneously at the 12.5 20 and 30 GHz beacon frequencies of the Olympus satellite. Due to the original feed configuration it is po