Patent ID: 9331388
Filing Date: 2016-05-03
CPC Classification: H01Q

Claim Text:
1. An electric emitter for vertically polarized wireless signals for a wireless communication service with a narrow frequency bandwidth around a frequency fo in the gigahertz range and characterized by a free-space wavelength λo, said emitter comprising: at least one substantially horizontally oriented conductor loop arranged above a conductive base area, with an emitter infeed point for electromagnetic excitation of the conductor loop relative to the conductive base area, wherein the conductor loop is formed by a polygonally or elliptically/circularly closed ring conductor running in a substantially horizontal plane with a height h of less than λo/6 over the conductive base area, said conductor loop characterized by a capacitance value, equally distributed over the periphery of the conductor loop are at least three vertical emitters electromagnetically coupled to the conductor loop at coupling points defined by the conductor loop, wherein said vertical emitters extend between the conductor loop and the conductive base area, wherein at least two of the vertical emitters are electromagnetically coupled to the electrically conductive base area at earth terminal points, and a vertical emitter is excited via the emitter infeed point at a lower end thereof, the vertical emitters coupled to the electrically conductive base area between their conductor loop coupling points and the earth terminal point and the vertical emitter which is excited via the emitter infeed point, between its conductor loop coupling point and the emitter infeed point, in each case have inductively operating components, and wherein the inductively operating components comprise inductors connected to respective lower ends of the vertical emitters between the vertical emitters and the electrically conductive base, wherein respective sizes of each of said inductors are approximately equal in each of the vertical emitters, and wherein the respective sizes are selected such that currents flowing in each of the vertical emitters at resonance (i) flow in the same direction and (ii) are approximately equal, such that a low-resistance resonance having the character of a series resonance is provided at the emitter infeed point at the frequency fo.