Electronic Device Antenna with Housing-Integrated Parasitic

An electronic device comprising:

• a dielectric cover;
• ground traces;
• first and second conductive patches interposed between the dielectric cover and the ground traces, the second conductive patch being separated from the first conductive patch by a first gap;
• a third conductive patch interposed between the second conductive patch and the dielectric cover and separated from the second conductive patch by a second gap;
• and
• a positive antenna feed terminal coupled to the second conductive patch, wherein
• the first, second, and third conductive patches are configured to radiate radio-frequency signals through the dielectric cover,
• the second conductive patch is configured to indirectly feed the first conductive patch across the first gap, and
• the second conductive patch is configured to indirectly feed the second conductive patch across the second gap.

An antenna comprising:

• a ground;
• a first patch overlapping the ground;
• a second patch overlapping the ground and separated from the first patch by a first gap, wherein the first and second patches are in a first plane;
• a third patch that overlaps the first patch and that is in a second plane separated from the first plane by a second gap;
• a conductive interconnect that couples the third patch to the ground;
• and
• a positive antenna feed terminal coupled to the first patch, wherein the first patch is configured to
• indirectly feed the second patch via a first near-field electromagnetic coupling across the first gap, and
• indirectly feed the third patch and the conductive interconnect via a second near-field electromagnetic coupling across the second gap.