Abstract: An antenna module is described for configuring a mobile device, e.g., a smartphone, to locate an animal wearing a radiofrequency (RF) transmitter, the module having a directional antenna structure, the antenna structure including a plurality of antenna elements configured to generate a directional radiation field; at least one RF receiver connected to the directional antenna structure; and, a controller configured to control the RF transceiver and a mobile device interface for providing communication with the mobile device, the controller being configured to execute the steps of: receiving one or more time series of beacons signals broadcasted by the RF transmitter that is within the directional radiation field of the directional antenna structure; determining distance estimates for beacon signals in the one or more time series, a distance estimate being determined by the antenna module on the basis of a signal strength and/or a signal quality of a detected beacon signal.

Abstract: An antenna module is described for configuring a mobile device, e.g., a smartphone, to locate an animal wearing a radiofrequency (RF) transmitter, the module having a directional antenna structure, the antenna structure including a plurality of antenna elements configured to generate a directional radiation field; at least one RF receiver connected to the directional antenna structure; and, a controller configured to control the RF transceiver and a mobile device interface for providing communication with the mobile device, the controller being configured to execute the steps of: receiving one or more time series of beacons signals broadcasted by the RF transmitter that is within the directional radiation field of the directional antenna structure; determining distance estimates for beacon signals in the one or more time series, a distance estimate being determined by the antenna module on the basis of a signal strength and/or a signal quality of a detected beacon signal.