| 摘要 |
The present invention relates to a radar filling level measuring device capable of generating and receiving an elliptically polarized wave and, as a special case, a circularly polarized wave, using a directional coupler which, according to a particular embodiment, may be configured as a 3dB coupler. By simultaneously using a 3dB coupler the necessary separation into transmitting and receiving functions can be achieved. Moreover, the present invention relates to a use of a directional coupler for generating an elliptically polarized wave and, as a special case, a circularly polarized wave, as well as to a method for generating and receiving an elliptically polarized wave. |
