Device for transmitting or emitting high-frequency waves

摘要

A device for transmitting or emitting high-frequency waves includes: a microstrip line ( 10 ) with one end ( 10 ') in a substrate ( 11 ) for transmitting high-frequency useful signals; a first ground surface ( 12 ) and a second ground surface ( 13 ), which are provided on opposite sides of the microstrip line ( 10 ), for forming a TEM waveguide assembly; an opening ( 14 ) in the first ground surface ( 12 ) located at a predefined distance (d) from the end of the microstrip line ( 10 ') for decoupling a high-frequency signal; a feedthrough device ( 15 ) for conductively connecting the first ground surface ( 12 ) with the second ground surface ( 13 ) on the lateral periphery of the microstrip line ( 10 ); and a planar coupling device ( 16 ) for receiving and transmitting or emitting the high-frequency useful signal. The feedthrough device ( 15 ) is configured in such a way that at a given frequency (f) it prevents the propagation of waveguide modes and excitation of waveguide mode resonance in the useful frequency band (F).