Electronically steerable parasitic array radiator antenna

An electronically steerable parasitic array radiator (ESPAR) antenna system, comprising:

• an ESPAR antenna, wherein the ESPAR antenna is connected to the low-noise amplifier via a RF line;
• a GPS receiver, wherein the GPS receiver is connected to a GPS low-noise amplifier via the RF line and connected to a central processing unit via a control line;
• the GPS low-noise amplifier, wherein the GPS low-noise amplifier is connected to at least one splitter via the RF line that connects the GPS low-noise amplifier to the GPS receiver and a power detector module and operates in the L1 and L2 GPS bands;
• the power detector module, wherein the power detector module is connected to the low-noise amplifier via the RF line and providing amplification between minimum and maximum limits of a range of operation of a power detector
• the power detector, wherein the power detector is connected to the power detector module via the RF line and receives an RF power level from the power detector module and converts the RF power level into a DC voltage output;
• and
• a central processing unit, wherein the central processing unit is connected to the ESPAR antenna, power detector, and the GPS receiver via control lines and the central processing unit includes memory that is capable of storing the DC voltage output from the power detector and wherein the central processing unit uses the DC voltage output to determine a direction of RF jamming noise and directs the ESPAR antenna to place a null in the direction of the RF jamming noise, thereby nullifying the RF jammer.