Mitigation of local oscillator leakage

Abstract

An apparatus for a multi-antenna transceiver is disclosed. The multi-antenna transceiver has a plurality of antenna elements connected to respective transceiver chains. Each transceiver chain includes a frequency converter operated using a respective local oscillator signal provided by a respective phase-locked loop. The apparatus includes a controller configured to cause control of the respective phase-locked loop of one or more transceiver chain to generate the respective local oscillator signal with a respective phase offset for mitigation of local oscillator leakage through the frequency converter. In some embodiments, the controller is further configured to cause, for each transceiver chain with a non-zero respective phase offset, a corresponding phase adjustment of a signal for frequency conversion. Corresponding multi-antenna transceivers, wireless communication devices and methods are also disclosed.

Dependencies are inferred from the claim text.