WI DE BAND CONSTANT BEAMWIDTH HORN ANTENNA R.J. Dewey * and R. Hill t ABSTRACT Work is reported on the development of a new wide band H-plane sectoral horn antenna which is not subject to the usual l/f variation of beamwidth with frequency. The upper frequency limit of wide band horn operation is dictated by the onset of TE30 mode in the horn feeder and throat. A compensating moding devi

APERTURE EFFICIENCY ENHANCEMENT WITH LOW CROSS POLARIZATION IN DIELECTRIC-LINED CONICAL HORNS P. Baillng . * , F. Jakobsen ** and P. G. Gudmandsen ** ABSTRACT The analysis of a dielectric-lined dual-mode horn with an aperture diameter of about 3A is described. Comparisons are presented between calculated co- and cross-polar patterns for a simplified mode coupler. Detailed calculations indic

LOW CROSS-POLAR RADIATION FROM WIDE FLARE-ANGLE CONICAL CORRUGATED HORNS P.J.B. Clarricoats, S.Mahmoud, A.D. Olver ABSTRACT The prediction of the radiation pattern of conical corrugated horns is described using the spherical-mode expansion method. In particular, cross-polar patterns are obtained for several horns and excellent agreement with measured patt.:!rns is demonstrated. Three m

A CONTIGUOUS BAND HIGH-POWER MULTIPLEXER EARTH STATIONS WP3l09/MD17F/R3 FOR SATELLITE R. Sorbello and A. Atia* ABSTRACT A contiguous band high-power multiplexer system for satellite earth station applications is described. The system is designed to operate with the INTELSAT V satellite frequency plan. Considerable advantages of the multiplexer system over a single wideband high-power amplifier



APERTURE COUPLING CHARACTERISTICS OF IMAGE AND SHIELDED DIELECTRIC LINES I.J. Bahl and P. Bhartia ABSTRACT Aperture electric couplers coupling between dielectric image lines and between shielded dilines is analyzed to develop a design technique for directional at millimeter wave frequencies. 

COUPLING BETWEEN TWO RECTANGULAR BARS THROUGH A FINITE THICKNESS SLOT J H CLOETE + ABSTRACT A conformal mapping procedure is described to obtain the coupling capacitance between two rectangular bars through a finite thickness slot. Representative theoretical graphs of the coupling capacitance and even-mode fringing capacitance for the coupling geometry are presented. A comparison is made

DIODE MOUNT/~1ATCHING STRUCTURE R. W. Shillady* ABSTRACT A broadband coaxial impedance transforming diode mount performing as a video detector over the frequency range from 5 to 20 GHz is described. principle feature of this design is its containment of a cost effective hermetically sealed cartridge for the semiconductor which is field replaceable without suffering performance degradation. Stat

A NEW GENERAL COMPUTER ALGORITHM FOR S-MATRIX CALCULATION OF INTERCONNECTED Gunnar Filipsson MULTI PORTS ABSTRACT An algorithm relating the S-parameters of interconnected multiports to the S-parameters of the unconnected multiports is derived in this paper. The algorithm is general in the sense that the number of involved ports is unlimited. A great advantage of the new relation is that i

ANALYSIS AND DESIGN OF A NEW MICROWAVE FILTER CONFIGURATION INHOMOGENEOUS DIELECTRIC LOADING WITH Atsushi Fukasawa, Kenichiro Hosoda and Takuro Sato Laboratory, OKI Electric Industry Company Ltd., 550-5 Higashi Asakawa, Hachioji City Tokyo 193, Japan ABSTRACT A new configuration has been found in this paper to constract a microwave band pass filter. An element of resonator filter is composed of