An antenna assembly for receiving the GPS signals in a global positioning system (GPS) receiver module automatically orients the antenna to better receive the GPS signals. The antenna is oriented by a positioner (e.g., a counterweight) that automatically rotates a frame on which the antenna is mounted....http://www.google.com/patents/US7986269?utm_source=gb-gplus-sharePatent US7986269 - Enhancing reception of signals in global positioning system (GPS) receiver module
