TUNABLE ANTENNA SYSTEMS

摘要

An electronic device has wireless communications circuitry including an adjustable antenna system coupled to a radio-frequency transceiver. The adjustable antenna system may include one or more adjustable electrical components that are controlled by storage and processing circuitry in the electronic device. The adjustable electrical components may include switches and components that can be adjusted between numerous different states. The adjustable electrical components may be coupled between antenna system components such as transmission line elements, matching network elements, antenna elements and antenna feeds. By adjusting the adjustable electrical components, the storage and processing circuitry can tune the adjustable antenna system to ensure that the adjustable antenna system covers communications bands of interest.

主权项

1. An electronic device having a periphery and an exterior, comprising:
a display; radio-frequency transceiver circuitry; an antenna having an antenna feed; a transmission line path coupled between the radio-frequency transceiver circuitry and the antenna feed; peripheral conductive housing structures that run along the periphery and surround the display, wherein the peripheral conductive housing structures extend along at least two external surfaces of the electronic device at the exterior of the electronic device, and the peripheral conductive housing structures include a portion that forms at least part of the antenna; storage and processing circuitry; and an adjustable electrical component that has at least one terminal that is electrically coupled to the peripheral conductive housing structures and that has a control terminal that receives control signals from the storage and processing circuitry that adjust frequency response in the antenna.