Electronic devices with multiple low band antennas

An electronic device comprising:

• peripheral conductive housing structures having a dielectric-filled gap that divides the peripheral conductive housing structures into a first segment and a second segment that is longer than the first segment;
• an antenna ground separated from the first and second segments by a slot;
• a data connector that extends through the second segment;
• a first positive antenna feed terminal coupled to a first point on the first segment by a first switch and coupled to a second point on the first segment by a first conductive trace that overlaps the slot, the second point being between the first point and the dielectric-filled gap;
• and
• a second positive antenna feed terminal coupled to a third point on the second segment by a second switch and coupled to a fourth point on the second segment by a second conductive trace that overlaps the slot, the fourth point being between the third point and the dielectric-filled gap and the data connector being between the fourth point and the dielectric filled gap.

An electronic device comprising:

• peripheral conductive housing structures having a dielectric-filled gap that separates a first segment of the peripheral conductive housing structures from a second segment of the peripheral conductive housing structures;
• ground structures separated from the first and second segments by a slot;
• a first positive antenna feed terminal;
• a second positive antenna feed terminal;
• and
• switching circuitry, wherein the switching circuitry has
• a first state in which the first positive antenna feed terminal and the first segment are configured to convey radio-frequency signals in a frequency band while a short circuit impedance in the frequency band is formed between the second segment and the ground structures, and
• a second state in which the second positive antenna feed terminal and the second segment are configured to convey radio-frequency signals in the frequency band while a short circuit impedance in the frequency band is formed between the first segment and the ground structures.