Radio frequency device and display device having the same

A radio frequency (RF) device comprising:

• a base layer;
• a conductive layer disposed on the base layer and comprising a plurality of first groups of conductive structures and a plurality of second groups of conductive structures having a different shape from the plurality of first groups and alternately arranged with the plurality of first groups;
• a dielectric layer disposed on the conductive layer;
• and
• at least one antenna element disposed on the dielectric layer and operating in each of a first frequency band and a second frequency band.

A radio frequency (RF) antenna comprising:

• a base layer;
• a ground plane layer disposed on the base layer and comprising a plurality of first slots in a first configuration and a plurality of second slots in a second configuration different from the first configuration, the plurality of first slots being interspersed with the plurality of second slots;
• a dielectric layer disposed on the ground plane layer;
• and
• at least one microstrip patch antenna element disposed on the dielectric layer, the microstrip patch antenna element comprising a plurality of slots enabling the antenna element to resonate at a plurality of respective frequencies.