Wireless electronic device with antenna switching circuitry

摘要

A wireless electronic device may include antennas formed at different locations on the device. The wireless electronic device may include transceivers that are used to wirelessly communicate in different frequency bands by transmitting and receiving radio-frequency signals in the frequency bands. The transceivers may include Wi-Fi® transceivers and cellular transceivers such as Long Term Evolution transceivers. The wireless electronic device may include antenna switching circuitry interposed between the transceivers and the antennas. The wireless electronic device may include control circuitry that controls the antenna switching circuitry to ensure that radio-frequency transmissions in adjacent frequency bands are routed to different antennas. By routing radio-frequency transmissions in adjacent frequency bands to different antennas, self-interference between communications in the adjacent frequency bands may be reduced. Self-interference may also be reduced by performing time division multiplexing to isolate radio-frequency signals that are transmitted in adjacent frequency bands.

主权项

1. A method of operating a wireless electronic device having three antennas, the method comprising:
with control circuitry, selecting a first antenna of the three antennas to use for radio-frequency transmissions in a first frequency band that is susceptible to intermodulation interference with a second frequency band; and with switching circuitry, mitigating intermodulation interference between the first and second frequency bands by performing time division multiplexing between radio-frequency transmissions in the first frequency band and radio-frequency transmissions in the second frequency band, wherein performing the time division multiplexing comprises:
periodically routing radio-frequency signals in the first frequency band to the selected first antenna for a first duration;periodically routing radio-frequency signals in the second frequency band to the selected first antenna for a second duration subsequent to the first duration; andwhile routing the respective radio-frequency signals in the first and second frequency bands to the selected first antenna, dynamically adjusting a ratio of the first duration to the second duration to provide increased bandwidth for communications in a given one of the first and second frequency bands.