PURPOSE:To set the height of an iron tower without losing the feature of an antenna and to increase the radiation capability of the antenna, by energizing the tower with grounded base, 1/4 wavelength or higher in height together with top stays in one doby. CONSTITUTION:A base (c) of a tower T is grounded and a wavelength lambdaT of the tower T is set as lambdaT/4 height of the tower TlambdaT/2. Top stays S1, S2 are wired from a top (a) of the tower T, a conductor D0 is drawn down in parallel with the tower T from a point (b) higher than a base of the tower (c) by lambdaT/4, and the lower end is fastedned to ground with an insulator 1. Conductors D1, D2 are fastened to ground via the insulator 1 at points b1, b2 higher than the base points c1, c2 of the stays S1, S2 by lambdaT/4 respectively. An energizing conductor F is drawn down with an inclination from the top (a) of the tower T via the insulator 1, and a transmitter E is located between the conductor F and ground. Reactive elements Q0-Q2 are provided between the conductors D0- D2 and ground, the tower T is energized in one body with the stays S1, S2 and the height of the tower T is set to about lambdaT/2.
展开▼
