Multi-radio access technology antenna assembly and related front-end package

A front-end package comprising:

• a multi-radio access technology (multi-RAT) antenna assembly comprising:
• a supporting structure;
• and
• a radiating structure provided on the supporting structure and configured to radiate a first outgoing electromagnetic wave corresponding to a first transmit signal encoded according to a first RAT in a first radio frequency (RF) spectrum;
• wherein the radiating structure comprises a plurality of slot openings configured to radiate a second outgoing electromagnetic wave corresponding to a second transmit signal encoded according to a second RAT in a second RF spectrum;
• at least one first front-end circuit coupled to the radiating structure and configured to provide the first transmit signal to the radiating structure such that the radiating structure is excited to radiate the first outgoing electromagnetic wave in the first RF spectrum;
• and
• at least one second front-end circuit coupled to the plurality of slot openings and configured to provide the second transmit signal to the plurality of slot openings such that the plurality of slot openings is excited to radiate the second outgoing electromagnetic wave in the second RF spectrum.