Patent ID: 8385868

Claim:
An antenna system for receiving a radio frequency (RF) signal from a first antenna and a second antenna and providing a combined signal to a receiver, said system comprising: a phase shift circuit electrically connectable to the second antenna for shifting a phase of the RF signal by one of a plurality of possible phase shifts to produce a phase shifted signal; a combiner electrically connectable to the first antenna and electrically connected to said phase shift circuit for combining the RF signal and the phase shifted signal to produce a combined signal; and a comparator circuit electrically connected to said combiner for receiving the combined signal and comparing a signal quality of the combined signal with a minimum threshold value to determine if the signal quality of the combined signal is equal to or greater than the threshold value; and wherein said comparator circuit is in communicative control of said phase shift circuit for maintaining the phase shift of the RF signal received by the second antenna in response to the signal quality of the combined signal being equal to or greater than the threshold value.