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A new theoretical approach to the problem of two identical, parallel, nonstaggered dipole antennas, driven by 2-wire lines is presented. This contribution is an extension of earlier work dealing with the isolated dipole antenna driven by a 2-wire line. The present simple theory is limited to coupled dipoles, the distances of which are greater than one-tenth of a wavelength.
A new simple method of measuring the operating impedances and adjusting medium-wave directive arrays is presented. The desired current ratios and phases in radiating towers are set up by using conventional pentode amplifiers and wide-range phase shifters. The operating input impedances can measured by means of an operating impedance bridge, or by a voltmeter method which is described in more detail...
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