Abstract: This invention relates to an antenna system comprising two identical mutually radiation coupled antennas arranged symmetrically with respect to one another, said antennas having a respective antenna connection gate and a network, which is connected at the input side to the antenna connection gates and which is formed from dummy elements, and having a respective antenna path to a network connection gate, said antenna paths being identical to one another and being separately associated with an antenna.

Abstract: A combination antenna for mobile radio or for mobile radio and broadcasting services comprises at least one plastic film arranged above a base plate and coated with conductive antenna structures; and at least one antenna connection point coupled to antenna structures on the electrically conductive base plate as an electrical counterweight of the combination antenna.

Abstract: A combination antenna for mobile radio or for mobile radio and broadcasting services comprises at least one plastic film arranged above a base plate and coated with conductive antenna structures; and at least one antenna connection point coupled to antenna structures on the electrically conductive base plate as an electrical counterweight of the combination antenna.

Abstract: An antenna arrangement for the reception of circularly polarized satellite radio signals having a free space wavelength ? and a frequency f comprises at least one circularly polarized satellite reception antenna positioned above an electrically conductive base surface whose outline is inscribed by a circle K about its phase center PZ having a relative antenna radius ra/?<0.15. A director is present that comprises a horizontal electrical conductor that has two conductor ends and that is guided over a director length Ld at a director height hd above the conductive base surface. The horizontal electrical conductor is angled at its two conductor ends and extends from there as vertical conductor in each case toward the conductive base surface.

Abstract: In an antenna array for receiving circularly polarized satellite radio signals, an antenna structure that includes a closed-loop radiator is placed in a plastic protective antenna cover and is secured therein in an interlocking manner.

Abstract: A closed-loop radiator for receiving circularly polarized satellite radio signals underneath a shell-type protective antenna cover made of dielectric plastic comprises a closed-loop conductor and vertical radiators that are connected thereto; the closed-loop conductor and the vertical radiators are applied as a coating to the inner surface of the protective antenna cover and form an electrically conducting, interconnected antenna structure.

Abstract: An antenna device for a vehicle for a vehicle serves for a vehicle transceiver device whose transmission power level regulation device is configured in a manner such that, during the bidirectional communication, the transmission power level is set as larger as the quality of the communication link falls and is conversely lowered as the transmission quality of the communication link increases.

Abstract: An antenna device for a vehicle for a vehicle serves for a vehicle transceiver device whose transmission power level regulation device is configured in a manner such that, during the bidirectional communication, the transmission power level is set as larger as the quality of the communication link falls and is conversely lowered as the transmission quality of the communication link increases.

Abstract: An antenna for the reception of circularly polarized satellite radio signals comprises a conductor loop that is arranged above a conductive base surface and that is configured as a ring line radiator that forms a resonant structure. Vertical radiators extending toward the conductive base surface are present at the periphery of the ring line radiator, with the excitation of the conductor loop taking place via one of the radiators as an active radiator. A specific number of passive vertical radiators galvanically coupled to the ring line radiator is furthermore provided.

Abstract: An antenna arrangement for the reception of circularly polarized satellite radio signals having a free space wavelength ? and a frequency f comprises at least one circularly polarized satellite reception antenna positioned above an electrically conductive base surface whose outline is inscribed by a circle K about its phase center PZ having a relative antenna radius ra/?<0.15. A director is present that comprises a horizontal electrical conductor that has two conductor ends and that is guided over a director length Ld at a director height hd above the conductive base surface. The horizontal electrical conductor is angled at its two conductor ends and extends from there as vertical conductor in each case toward the conductive base surface.

Abstract: In an antenna array for receiving circularly polarized satellite radio signals, an antenna structure that includes a closed-loop radiator is placed in a plastic protective antenna cover and is secured therein in an interlocking manner.

Abstract: The invention relates to a vertical broadband monopole antenna for vehicles, for two frequency bands separated by a frequency gap, said antenna having a first capacity top and a further capacity top, which is capacitively coupled to the first capacity top, wherein the further capacity top has at least one inductive high-resistance conductive strip, which extends to a conductive ground surface and is conductively connected thereto at its lower end.

Abstract: A closed-loop radiator for receiving circularly polarized satellite radio signals underneath a shell-type protective antenna cover made of dielectric plastic comprises a closed-loop conductor and vertical radiators that are connected thereto; the closed-loop conductor and the vertical radiators are applied as a coating to the inner surface of the protective antenna cover and form an electrically conducting, interconnected antenna structure.

Abstract: An antenna for the reception of circularly polarized satellite radio signals comprises a conductor loop that is arranged above a conductive base surface and that is configured as a ring line radiator that forms a resonant structure. Vertical radiators extending toward the conductive base surface are present at the periphery of the ring line radiator, with the excitation of the conductor loop taking place via one of the radiators as an active radiator. A specific number of passive vertical radiators galvanically coupled to the ring line radiator is furthermore provided.

Abstract: The invention relates to a vertical broadband monopole antenna for vehicles, for two frequency bands separated by a frequency gap, said antenna having a first capacity top and a further capacity top, which is capacitively coupled to the first capacity top, wherein the further capacity top has at least one inductive high-resistance conductive strip, which extends to a conductive ground surface and is conductively connected thereto at its lower end.

Abstract: A multiband reception antenna enables the combined reception of circularly polarized satellite radio signals from at least one satellite radio service which emits with circular polarization and of terrestrially emitted radio signals. The multiband reception antenna comprises at least one satellite reception antenna with a ring line emitter and a plurality of vertical emitters are connected to the ring line emitter over the circumference of the ring line emitter. Furthermore, a monopole is provided, with a monopole connection point formed at the lower end thereof.

Abstract: An electric emitter for vertically polarised wireless signals for a communication service with a narrow frequency bandwidth around a frequency fo with free-space wavelength ?o in the gigahertz range, 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 loop relative to the base area. The loop is formed by a circularly closed ring conductor running in a substantially horizontal plane with a height h of less than ?o/6 over the base area. Distributed over the periphery of the ring conductor are at least three vertical emitters electromagnetically coupled to the ring conductor coupling points and running to the base area, wherein at least two of the emitters are electromagnetically coupled to the base area at earth terminal points, and a vertical emitter is excited via the emitter infeed point at the lower end thereof.

Abstract: An antenna for receiving circularly polarized satellite radio signals has a conductive base surface and at least one a conductor loop oriented horizontally above the base surface by a height h. The conductor loop is configured as a polygonal or circular closed ring line radiator. The ring line radiator forms a resonant structure that is electrically excited so that the current distribution of a running line wave in a single rotation direction occurs on the ring line, wherein the phase difference of which, over one revolution, amounts to essentially 2?. A vertical radiator extends between the conductive base surface and the circumference of the ring line radiator. The height h is smaller than ? of the free-space wavelength ?.

Abstract: A high-frequency phase shifter for varying the phase between its high-frequency input signal and its output signal by the transmission phase ?, consisting of a two-port network which is symmetrical in relation to input and output and which with respect to its high-frequency properties consists of three two-terminal networks consisting of low-loss reactances, wherein at least one of the two-terminal networks is arranged in a series circuit as a two-terminal network in series with one of the connecting ports and at least one of the two-terminal networks is arranged in a parallel circuit as a two-terminal network in parallel with the two-port earth, so that a symmetrical T-circuit or a symmetrical ? circuit is provided.

Abstract: An antenna for receiving circularly polarized satellite radio signals has a conductive base surface and at least one a conductor loop oriented horizontally above the base surface by a height h. The conductor loop is configured as a polygonal or circular closed ring line radiator. The ring line radiator forms a resonant structure that is electrically excited so that the current distribution of a running line wave in a single rotation direction occurs on the ring line, wherein the phase difference of which, over one revolution, amounts to essentially 2?. A vertical radiator extends between the conductive base surface and the circumference of the ring line radiator. The height h is smaller than ? of the free-space wavelength ?.