Wireless Devices Having Antenna Isolation Structures

An electronic device comprising:

• a housing having peripheral conductive structures;
• first and second dielectric-filled gaps that divide the peripheral conductive structures, wherein a first segment of the peripheral conductive housing structures extends from the first dielectric-filled gap to the second dielectric-filled gap, and the first dielectric-filled gap separates the first segment from a second segment of the peripheral conductive housing structures;
• an antenna ground separated from the first segment by a slot, the slot including a first portion between the second segment and the antenna ground;
• a slot antenna formed from the first portion of the slot;
• an additional antenna having an antenna resonating element arm that overlaps a second portion of the slot extending between the first segment and the antenna ground;
• and
• a conductive isolation structure that overlaps a third portion of the slot between the first and second portions of the slot.

An electronic device comprising:

• peripheral conductive housing structures;
• a dielectric-filled gap that divides the peripheral conductive housing structures into first and second segments, wherein the first segment has an end at the first dielectric-filled gap;
• an antenna ground coupled to the first segment and separated from the second and third segments by a slot, wherein the slot has an extended portion that extends away from second segment and beyond the end of the first segment, and the extended portion of the slot having a first edge defined by the first segment and an opposing second edge defined by the antenna ground;
• a first antenna feed coupled to the first segment and the antenna ground across the extended portion of the slot;
• an antenna resonating element between the first segment and the antenna ground;
• a second antenna feed coupled to the antenna resonating element and the antenna ground across an additional portion of the slot;
• and
• an unfed conductive isolation element between the second and third antenna feeds, wherein the unfed conductive isolation element is configured isolate the antenna resonating element from the extend portion of the slot.