A MICROWAVE CALIBRATION F.M. NOISE MEASURING PROCEDURE . SYSTEM WITH A SIMPLIFIED J. Kohler and B. Schiek ABSTRACT The f.m. noise of a microwave oscillator is discriminated with the combination of a circulator and a high-Q reflection type cavity and detected in a balanced mixer. The L.O.signal for the mixer is also derived from the oscillator under test. The resonator can be frequency modulated

THE USE OF TIME DOMAIN TECHNIQUES TRANSISTOR s-PARN~ETER FOR MICROWAVE MEASUREMENTS. H.W. LOEB* C. DAVIESt~ P. WARDt ABSTRACT The determination band up to ~ lOGHz by means of Time Domain Techniques, of microwave transistor s-parameter over a frequency involving Fourier analysis and deconvolution of transient response data, is described and compared with network analyzer techniques.

A NEW PROCEDURE FOR SYSTEM CALIBRATION S-PARAMETER MEASUREMENTS Norman R. Franzen and Ross A. Speciale* AND ERROR REMOVAL IN AUTOMATED ABSTRACT: A new procedure is described, intended for system calibration and systematic error removal in automated S-parameter measurements. The new procedure uses only three non-critical reference standards, called the II the "Through", and the I "Delay" l and le

THE DESIGN OF CASSEGRAIN ANTENNAS FOR HIGH EFFICIENCY AND LOW V.S.W.R. G.T. Poulton ~ ABSTRACT This paper presents a method for optimally designing the subreflector of a Cassegrain antenna for maximum efficiency while maintaining a low V.S.W.R. level. This is accomplished by setting up a composite performance criterion which explicitly includes both the efficiency and the power reflected

CORRUGATED WAVEGUIDE FEEDERS FOR MICROWAVE ANTENNAS P.J.B. Clarricoats, A.D. Olver, C.G. Parini and G.T. Poulton ABSTRACT The use of corrugated waveguide as feeders for microwave antennas is discussed. They offer the advantage of a potentially lower attenuation than smooth wall circular waveguides. As circular corrugated waveguide feeders are slightly overmoded, we describe results sh

DIELECTRIC FEEDS FOR REFLECTOR ANTENNAS by K.-P. Dombek *) ABSTRACT Special dielectric antennas used as elements for a feed of multi-beam or limited-scan reflector antennas have been developed. As a result of the close arrangement of the feed elements, their cross-sectional dimensions must be small and their mutual coupling should be as low as possible. On the other hand, the individual elements

IMPROVEr1ENTS IN THE DEVELOPMENT OF COAXIAL FEEDS FOR PARABOLOIDAL REFLECTOR ANTENNAS by H. Scheffer *) ABSTRACT The coaxial feed for front-fed paraboloidal antennas as known from previous papers, by which an increase of aperture efficiency and a decrease of spillover is achieved, was simplified considerably in construction and improved in bandwidth. The aperture field distribution of the feed, w

SPLASH PLATE FEED DESIGN D.P.S. Malik and G.L. James ABSTRACT The theoretical design of splash plate feed systems, where a reflecting plate is situated in front of a radiating aperture, is discussed. Several configurations are investigated and the results compared with experimental data. 

SUBNANOSECOND PULSE TECHNOLOGY AND ITS APPLICATIONS Gerald F. Ross ABSTRACT In this paper we present the current status of subnanosecond pulse technology and its various applications. Specifically, we will discuss the plication of baseband technology to the test and calibration of microwave components and the measurement of the intrinsic properties of materials, the development of a new cla

NEW RADAR AND NAVIGATION SYSTEMS K L Fuller ABSTRACT It is not the intention of this paper to give a complete coverage of all new radar and navigation systems, but to concentrate rather more on specific areas and examples where microwaves are used. Also, general coverage of the radar area is felt to be unnecessary following the invited paper given by R. Voles at Microwave 74, however recent adv