Multiband slot antenna system and apparatus

An electronic device, comprising:

• an antenna ground plane;
• a conductive side element;
• a first antenna resonating element;
• a second antenna resonating element;
• a slot-based antenna element formed from slot structures adjacent to the conductive side element, wherein the slot structures having slot open ends;
• at least two radio-frequency (RF) switches loaded with a plurality of grounded lump loads, the switches located across the slot-based antenna element and dividing the slot-based antenna element to a first section extending from a first slot open end to a first switch, a second section extending from the first switch to a second switch, and a third section extending from the second switch to a second slot open end;
• wherein the first antenna resonating element capacitively coupled at least to the first section of the slot-based antenna element, and forming together with the antenna ground plane and the conductive side element, a first antenna operating at a first frequency;
• the second antenna resonating element capacitively coupled at least to the third section of the slot-based antenna element, and forming together with the antenna ground plane and the conductive side element, a second antenna operating at a second frequency;
• and
• wherein the first and the second frequency are configured to be tuned at different frequencies based on a lump load switched by the first and the second radio-frequency (RF) switches.