Response of circuits to steady-state pulses

"Reprinted from IRE Vol. 37, No. 12, December, 1949."""March 10, 1951.""A method of calculating the steady-state response of circuits to repeated pulses is given using the method of the steady-state operational calculus. A short table of transforms which have been found useful in these calculations is also presented. The response of several basic circuits to these pulses is obtained and shown as calculated curves, and the calculated curves are then compared with curves obtained experimentally. These curves have been found to be very useful in adjusting circuits to be used with pulses. Several other possible applications are discussed."--Summary

Steady-state waves on transmission lines

"June 1, 1951.""Reprinted from Trans. AIEE, Vol. 69, 1950.

The design of a single-layer microwave absorbing material

"September 7, 1959.""Reprinted from Volume XIV, Proceedings of the National Electronics Conference, Hotel Sherman, Chicago, Illinois, October 13, 14, 15, 1958."The microwave absorbing structure considered here consists of a homogeneous lossy dielectric material backed by a good conductor. Some previous work has been done on obtaining the electric and magnetic parameters of a suitable dielectric assuming that the magnetic dissipation factor was zero. With the wide spread use of ferrites at microwave frequencies, design information assuming a finite magnetic dissipation factor is needed and is presented. The special cases of zero electric dissipation factor, zero magnetic dissipation factor and equal electric and magnetic dissipation factors are also considered. Possible values of the electric and magnetic parameters of the absorbing material are obtained and the resulting thickness is presented. A method of choosing the parameters for the smallest thickness of dielectric is given. Little information has been available as to the possible band width of such a structure. An expression for the band width is derived for a given power reflection coefficient. The parameters of the absorbing material necessary for the greatest band width are indicated

Pulsed eddy currents gage plating thickness

"March 1, 1956.""Reprinted from Electronics vol. 28, page 146, November 1955.""Echo-sounding technique making use of pulsed eddy currents determines thickness of one metal coated on a base metal. System takes advantage of electrical dissimilarities and is effective even when both metals are nonmagnetic."--Summary

Circuit waveforms for periodic waves

"February 16, 1964.""Reprinted from Communication and Electronics March 1963.""A method using steady-state transforms is described which indicates how the sum function of a Fourier series may be obtained. The method can be applied to problems arising from circuits containing concentrated circuit parameters, but is not quite so useful for those having distributed parameters. Tables of Fourier series and their sum functions are presented, and several examples of the application of the method in circuit problem are given in this paper."--Page 1

Design of optimum phase-shift oscillators

"January 1, 1957.""Reprinted from Proceedings of the National Electronics Conference, Vol. 11, Page 222, 1955 ; This article also appeared in Electronic Equipment, Vol. 4, Page 38, April, 1956."In the designing of phase-shift oscillators it is advantageous to make the loss in the phase shift circuit a minimum, so that an amplifier of minimum gain may be used. A method of obtaining such a design has been developed which seems applicable to any one of the great variety of phase-shift oscillator circuits. This method is applied to two different phase-shift oscillators to obtain design equations and curves. The first example is that of one of the most common phase-shift oscillators. The results appear to agree with those obtained by a previous analysis which does not have the versatility of the present method. The second example is that of one of the relatively new cathode-follower phase-shift oscillator circuits which seem to have promise in the development of low-distortion oscillators. Since the gain of a cathode-follower amplifier is below unity, the determination of optimum phase-shift circuits becomes extremely important

A method for obtaining a uniform electric field

"Reprinted from 1966 IEEE International Convention Record, Part 7.""Electric field meters are used for the measurement of the electric field at the surface of the earth, on airplanes and on satellites. For research work and calibration of the meters, a uniform electric field facility is necessary. The accessibility of the usual parallel plane configuration is very poor, so it was decided to investigate the possibilities of two and four-ring systems to produce very uniform electric fields. An analysis of these systems was made and the results are presented as tables and curves of the geometrical dimensions, the charge ratio, and size of the volume of uniformity.