Abstract: A playback device is configured to transmit and receive signals via a patch antenna coupled to a wireless radio. The patch antenna is configured to reduce cross-polarized radiation and comprises an electrically conductive ground plane, a substrate disposed on the ground plane, and a radiator disposed on the substrate. The radiator comprises a first portion and a second portion, wherein the first portion of the radiator is coupled through an opening in an interior region of the patch antenna to a first leg of a differential feed. The differential feed is configured to provide a signal to drive the radiator. The patch antenna also comprises a delay element, wherein the second portion of the radiator is coupled via the delay element and further through the opening of the patch antenna to a second leg of the differential feed.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: A global navigation satellite system (GNSS) receiver using phase lock loops for strong GNSS signals and (AFC) loops for weak GNSS signals on a satellite-by-satellite basis. The phase lock loops or the AFC loops associated with particular GNSS satellites generate frequency feedback adjustments for tracking the carrier frequencies of the incoming GNSS signals in order to determine pseudoranges for calculating a location fix. The transition from an AFC loop to a phase lock loop is controlled for each GNSS signal depending on location quality parameters including a history of previous loop transitions, knowledge of whether a transition is in-progress, and a conditional PDOP where the pseudorange from the GNSS signal is removed from the computation of the location fix.