R.M. Barrett

Bio: R.M. Barrett is an academic researcher. The author has contributed to research in topics: Electronic circuit & Microwave engineering. The author has an hindex of 1, co-authored 1 publications receiving 46 citations.

Microwave Printed Circuits - A Historical Survey

Abstract: The microwave printed circuit, as described in this paper, is an extension of the well-known technique which is of such importance in the lower frequency regions, where lumped element circuits are practical. This new circuit possesses all of the virtues of other printed circuits, such as light weight, cheapness, ease of manufacture, miniaturization, etc., along with the ability to be used at frequencies as high as 10,000 mc. The basis of the new technique is the planar or "flat strip" coaxial transmission system which was developed during World War II but which has remained unpublished and relatively unknown in the postwar period; and for which an adequate theoretical analysis had not been available.

Computer-aided design of RF and microwave circuits and systems

Abstract: The history of RF and microwave computer-aided engineering is documented in the annals of the IEEE Microwave Theory and Techniques Society. The era began with elaborate analytically based models of microwave components and simple computer-aided techniques to cascade, cascode, and otherwise connect linear component models to obtain the responses of linear microwave circuits. Development has become rapid with computer-oriented microwave practices addressing complex geometries and with the ability to globally model and optimize large circuits. The pursuit of accurate models of active devices and of passive components continues to be a key activity.

Determination of the Capacitance, Inductance, and Characteristic Impedance of Rectangular Lines

Abstract: This paper determines the capacitance, inductance, and characteristic impedance of rectangular lines by the method of conformal transformation. In practical applications, such lines may be used as transmission links of RF energy, as impedance-transforming sections, or as components in electron tubes. Formulas are given for the calculation of the parameters of rectangular lines having the following characteristics: 1) The inner conductor may have varying thickness compared with the depth of the outer conductor. 2) The axes of the conductors may coincide or may be displaced with respect to each other. 3) The edges of the inner conductor may be rounded to lessen the electrical stress occurring at sharp corners. Excellent agreement has been obtained between the calculated results and those found by use of the relaxation method, by direct measurement of models, and by electrolytic tank measurement.

Microwave and millimeter-wave integrated circuits

Abstract: This historical review is divided into three sections: microwave integrated circuits (MICs), monolithic microwave integrated circuits (MMICs), and MIC and millimeter-wave integrated-circuit applications.

Historical Perspectives on Microwave Field Theory

Abstract: Microwave Field Theory furnishes the foundation for all of the microwave circuitry that made possible the great advances achieved by the microwave field. It is important to understand that microwave field theory is only a portion of electromagnetic field theory in general, and to appreciate how it is distinguished from it. In addition, the network formulation of microwave field theory has been fundamental to the rapid progress made by the microwave community; the formulation in network terms has been so intertwined with the development and understanding of the field concepts and behavior that the network formulation should be viewed as an integral part of microwave field theory. The first part of this introduction explains the point of view indicated in the above paragraph. The second part of the introduction outlines the scope of the historical review presented here.

Yig filter having a single substrate with all transmission line means located on a common surface thereof

Abstract: One or more non-overlapping transmission line conductors fabricated on one planar surface of a single slab of an electric material mounted on a ground plane. At least one YIG resonator element is located in a cavity formed in the surface of the substrate facing the ground plane. The YIG resonator element, moreover, is positioned in close proximity to said one or more transmission line conductors a selected distance below the outer surface of the substrate and below the transmission line circuitry.