Systems and Methods for Establishing Reliable Wireless Links

A wristwatch device having first and second opposing faces comprising:

• a display at the first face;
• a rear housing member at the second face;
• an antenna array having a plurality of antenna resonating elements that overlap the rear housing member;
• and
• radio-frequency transceiver circuitry coupled to the plurality of antenna resonating elements and configured to convey radio-frequency signals at a frequency above 10 GHz through the rear housing member using the plurality of antenna resonating elements.

An electronic device comprising:

• a housing having a rear housing wall;
• a coil structure;
• wireless power receiving circuitry coupled to the coil structure and configured to use the coil structure to receive wireless power signals through the rear housing wall;
• a plurality of antenna elements for an antenna array operable to convey radio-frequency signals through the rear housing wall;
• and
• alignment structures configured to bias the electronic device toward external equipment with a force applied across the rear housing wall to fix a position of the electronic device relative to the external equipment.