Abstract: A fixture and a method for using a fixture in a computerized tomography (“CT”) scan system of an electronic device are disclosed. The fixture is designed to reduce attenuation of radiation passing through the fixture to improve the CT imaging, particularly the imaging of one or more components in the electronic device. For example, the fixture may include a support column having a first support wall and a second support wall that define a space in the support column. Also, the support column may be offset with respect to a base portion of the fixture such that a component scanned in the CT scan system is positioned along a center of rotation of the fixture. Alternatively, or in combination, the fixture may be secured to a motorized device that actuates the fixture in two dimensions to align the component along the center of rotation.

Abstract: An electronic device may be provided with a housing. The housing may have a periphery that is surrounded by peripheral conductive structures such as a segmented peripheral metal member. A segment of the peripheral metal member may be separated from a ground by a slot. An antenna feed may have a positive antenna terminal coupled to the peripheral metal member and a ground terminal coupled to the ground and may feed both an inverted-F antenna structure that is formed from the peripheral metal member and the ground and a slot antenna structure that is formed from the slot. Control circuitry may tune the antenna by controlling adjustable components that are coupled to the peripheral metal member. The adjustable components may include adjustable inductors and adjustable capacitors.

Abstract: An electronic device may be provided with a housing. The housing may have a periphery that is surrounded by peripheral conductive structures such as a segmented peripheral metal member. A segment of the peripheral metal member may be separated from a ground by a slot. An antenna feed may have a positive antenna terminal coupled to the peripheral metal member and a ground terminal coupled to the ground and may feed both an inverted-F antenna structure that is formed from the peripheral metal member and the ground and a slot antenna structure that is formed from the slot. Control circuitry may tune the antenna by controlling adjustable components that are coupled to the peripheral metal member. The adjustable components may include adjustable inductors and adjustable capacitors.