LOW COST ACTIVE ARRAY MODULE DESIGN FOR TRANSMIT AND RECEIVE OPERATION J. Austin* and J. R. Forrest ABSTRACT This paper describes the design and testing of an active phased array element for both transmit and receive operation. Emphasis is placed on cost reduction since many elements will be used in a complete active array. A single solid-state source is used both to generate the transmitted

NEW DESIGN TECHNIQUES FOR MICROSTRIP ANTENNA ARRAYS J. R. James* and G. J. Wilson* ABSTRACT The radiation resistance of an open-circuit micros trip termination is to a good approximation, a simple function of the strip width thus suggesting a straightforward yet effective means of element control when used in a large array; furthermore the array bandwidth can be controlled to some extent. The de

AN IMPROVED ELEMENT FOR USE IN ARRAY ANTENNAS Alvin Clavin* ABSTRACT A new element is described which is useful in array antennas. This element has a circular symmetric radiation pattern, controllable beamwidth, and exhibits extremely low mutual coupling between elements in the array. A modification of this antenna element results in a single antenna having equal E- and H-plane patterns, no sid

HOT ELECTRONS MICROWAVE POWER MONITORS + FOR X AND S-BANDS J. Konopka Abstract Design and performance of very high pulse power monitors based on the thermoelectric effects of hot carriers in a semiconductor placed in the microwave electric field gradient is described. Principle of operation of the devices is presented with the special attention paid to semiconductor material choice and some

COAXIAL MILLIMETER WAVE JOSEPHSON JUNCTION and G.Jung DETECTOR S.J.Lewandowaki, R.J.Sobolewski ABSTRACT We describe a novel Josephson device made from a section of superconducting ( niobium) coaxial line and from thin superconducting (lead) membrane mounted perpendicularly to line axis. The membrane makes good galvanic contact with the outer coaxial conductor and forms a circumferential Jo

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