A UNITY GAIN DELAY MODULE OPERATING AT 3 GHz T M Mason* ABSTRACT A unity gain instantaneous inary results 22 µS delay module operating bandwidth of 500MHz will be obtained with a 25MHz chirp at 3GHz and offering described together with radar. an prelim- The 226 x 80 x 32mm package contains amplifiers, PIN switches, circulators and a Spinel bulk wave acoustic delay line integrated in gold bon

THE INFLUENCE LINE OF ANISOTROPY ON THE STABILITY OF A BEAM GUIDED DISC DELAY E. Papadofrangakis*, ABSTRACT I.M. Mason*, and J. Chambers*. The effect of anisotropy on disc delay line beam propagation is examined means of a paraxial ray analysis. Anisotropic transfer matrices describe the disc's optical characteristics. The theory is applied to explain different propagation loss experimenta

MICROWAVE ACOUSTIC SURFACE-WAVE COMPONENTS P. HARTEMANN and R. GAUDRY * ABSTRACT Various acoustic surface-wave components operating at frequencies higher than 1 GHz have been realized using an electron beam pattern generator. Thus delay lines ,filters and oscillators have been realized on lithium niobate and quartz substrates. Simple and tapped delay lines using transducers with constant or

NONLINEAR EFFECTS ON LiNb03 DELAY LINE COATED WITH A POLYCRYSTALLINE CdSe FIU1 P.Merilainen and M.Luukkala ABSTRACT The resistance of a polycrystalline photoconductive CdSe film upon a piezoelectric acoustic surface wave delay line is investigated. During the acoustic pulse propagates in the line, a resistance decrease by a factor up to ten is revealed. The relationship between the resistance cha



COMPONENTS NARROW -STRIP FOR ACOUSTIC SURFACE WAVES BASED ON CUTOFF SECTIONS A. A. Oliner and T. Minami ABSTRACT A new class of components for acoustic surface waves has been developed which is based on a simple structure that is equivalent to a small section of below -cutoff transmission line. The components include power splitters, directional couplers, nonreflecting delay-line taps,

AN ITERATIVE SOLUTION WAVEGUIDE ANTENNA FOR THE REFLECTION COEFFICIENT OF A FLANGED M.F. Iskander and M.A.K. Hamid ABSTRACT Schwarz's iterative procedure of overlapping regions is employed to solve for the reflection coefficient at the open end of a flanged parallel-plate waveguide antenna, with the flange being of arbitrary flare angle. It is shown that by dividing the junction into cir

DIELECTRIC CURRUGATED SPHERICAL ANTENNA WAVEGUIDE EXCITED BY A CYLINDRICAL P.S. Neelakantaswamy* and D.K. Banerjee** ABSTRACT: The radiation characteristics of a homogeneous dielectric sphere illuminated by a corrugated cylindrical waveguide with quarter wave teeth, carrying the hybrid mode (HE11) are studied. The field distribution at the aperture of the corrugated pipe is used as the sphere

PROPAGATION IN THE GENERAL, RECTANGULAR WAVEGUIDE. J. BACH ANDERSEN Abstract Two methods for calculating the propagation characteristics of rectangular waveguides with various internal and external media are presented. The first one is only asymptotically correct and utilizes the reflection coefficients from the walls, taking into account depolarization. Results are presented for dielectric