METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING ELECTROMAGNETIC WAVES WITH A FREQUENCY LESS THAN 3 GHZ VIA A SINGAL ANTENNA UNIT

摘要

The invention relates to a filling level measuring device which is based on the runtime measuring principle. Said inventive filling measuring device comprises an electronic unit (4) with a transmitting (9) and receiving device (10) for electromagnetic waves with a frequency of less than 3 GHz, a process coupling unit (5) connected to the electronic unit (4), which guides the transmitted signals along the measured section and guides the reflected signals back to the electronic unit (4), and a high-frequency transformer (15, 16, 17, 18) to which the transmitting (9) and receiving device (10) and the process coupling unit (5) are connected.