Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to perform positioning determination procedures, such as angle-based positioning procedures, with a base station to determine the position of the UE relative to the base station. To avoid positioning ambiguities that may result from antenna element spacing of an antenna module of the UE at some frequencies, such as mutual coupling or grating lobes, a UE may transmit a capability message indicating the capability of the UE related to the positioning procedures. In some cases, the UE may de-activate one or more antenna elements to increase the spacing between the antenna elements so as to mitigate mutual coupling when transmitting or receiving positioning reference signals. In some cases, the UE may request that the positioning reference signals be scheduled on some frequencies, not scheduled on other frequencies, or both.