APPROXIMATE ANALYSIS OF BROADBAND DIPOLE-SLOT ANTENNAS.

Miniature antennas with frequency-independent input impedance can be constructed using electric and magnetic radiators with an additional absorbing resistor. A successful version of a dipole-slot antenna is described in a previous paper. This antenna consists of slots in a metal screen, closed on one side with a resonator and an unbalanced dipole, placed orthogonal to the screen, so that the axis of the dipole passes through the center of the slot. The dipole and the slot are excited by a common single-conductor line, to one end of which the generator is connected, and to the other an absorbing resistor. In the present paper we propose a method of analyzing the antenna by means of which one can calculate its characteristics. In addition, we numerically investigate an array of such antennas proposed with the idea of increasing the efficiency and directivity.