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An investigation is made concerning the dependence of the array characteristic of a directional ring aerial on its number of elements. It is shown that an odd number of elements is more favorable than an even number in approximating the array characteristic of a similar ring aerial with...
Certain wave‐guide boundary value problems can be formulated in terms of lumped‐constant circuits and distributed‐constant transmission lines. Equivalent circuit voltages and currents can be introduced as measures of the transverse electric and magnetic fields. Making use of these concepts...
The impedance offered to a small superposed alternating current by a space‐charge limited cylindrical diode is expressed in terms of the variational plate conductance, the transit time angle, and a group of constants which are functions of the ratio of the plate to cathode radii. The result...
The concept of ``force acting on a dislocation'' (or other imperfection) is intrinsically different from the concept of force as used in newtonian mechanics, and must be defined. A definition is given which preserves the basic property (1) that the direction of the resultant force gives the...
This paper presents the input admittance of a symmetric biconical antenna of an arbitrary angle as the limit of a certain sequence of functions. The first term of this sequence approaches the exact expressions for the input admittance as the cone angle approaches either zero or 90°. For this...
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