Patent attributes
An electronic device may be provided with an antenna for receiving signals in first and second ultra-wideband communications bands. The antenna may include a first arm that radiates in the first band and a second arm that radiates in the second band. The antenna may be fed by a stripline. A microstrip may couple the stripline to the first and second arms and may be configured to match the impedance of the stripline to the impedance of the first and second arms in the first and second bands, respectively. Sets of antennas tuned to different frequencies may be fed by the same transmission line and may collectively exhibit a relatively wide bandwidth. A conductive shielding layer or other conductive components may be layered over the antennas to mitigate cross-polarization interference at the antennas.
