Electronic Device With Antenna Feed Bolt

An antenna, comprising:

• a first metal structure;
• a second metal structure separated from the first metal structure by an opening;
• a bolt that is coupled across the opening between the first and second metal structures;
• and
• a circuit component in the bolt that is configured to tune the antenna.

An electronic device, comprising:

• input-output circuitry;
• control circuitry coupled to the input-output circuitry;
• conductive electronic device housing structures that include an opening that separates a first portion of the conductive electronic device housing structures from a second portion of the electronic device housing structures to form an antenna from the conductive electronic device housing structures;
• an antenna feed member coupled across the opening, wherein the antenna feed member has a first surface that is shorted to the first portion to form a ground antenna feed terminal and has a second surface that is shorted to the second portion to form a positive antenna feed terminal and wherein at least one of the first or second surfaces has threads;
• radio-frequency transceiver circuitry that the control circuitry is configured to use to transmit and receive wireless communications;
• and
• a transmission line coupled between the radio-frequency transceiver circuitry and the antenna feed member.