Novel Wide Null Forming System with Beam forming

Abstract

A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.

1 . A communication system configured to form a beam comprising a beam peak in a first direction, a first null in a second direction different from said first direction, a second null adjacent to said first null by a first angle less than 0.5 degrees and a third null in a third direction different from said first and second directions, wherein a first null width, at a radiation power below 50 dB from said beam peak, covering multiple nulls comprising said first and second nulls is greater than a second null width, at said radiation power, covering a single null that is said third null. 
     
     
         2 . The communication system of  claim 1  configured to form said beam further comprising a fourth null in a fourth direction different from said first, second and third directions and a fifth null adjacent to said fourth null, wherein a third null width, at said radiation power, covering multiple nulls comprising said fourth and fifth nulls is greater than said second null width. 
     
     
         3 . The communication system of  claim 2  configured to form said beam, wherein said fifth null is adjacent to said fourth null by a second angle less than 0.5 degrees. 
     
     
         4 . The communication system of  claim 2  configured to form said beam further comprising a peak of a first side lobe between said first and second nulls in angle, wherein said peak of said first side lobe is at a gain level below greater than 50 dB from said beam peak, and a peak of a second side lobe between said fourth and fifth nulls in angle, wherein said peak of said second side lobe is at a gain level below greater than 50 dB from said beam peak. 
     
     
         5 . The communication system of  claim 2  configured to form said beam, wherein said beam peak is between said first and fourth nulls in angle, said first and fourth directions are substantially 2 degrees apart in angle, and said first and second directions are substantially 2 degrees apart in angle. 
     
     
         6 . The communication system of  claim 1  configured to form said beam further comprising a peak of a side lobe between said first and second nulls in angle, wherein said peak of said side lobe is at a gain level below greater than 50 dB from said beam peak. 
     
     
         7 . The communication system of  claim 1 , wherein said second and third directions are substantially 2 degrees apart in angle. 
     
     
         8 . The communication system of  claim 1 , wherein said second null is adjacent to said first null by said first angle less than 0.3 degrees 
     
     
         9 . A communication system configured to form a beam comprising a beam peak in a first direction, a first null in a second direction different from said first direction, a second null adjacent to said first null, and a peak of a first side lobe between said first and second nulls in angle, wherein said peak of said first side lobe is at a gain level below greater than 40 dB from said beam peak, wherein said first and second directions are substantially 2 degrees apart in angle. 
     
     
         10 . The communication system of  claim 9  configured to form said beam further comprising a third null in a third direction different from said first and second directions and a fourth null adjacent to said third null by an angle less than 0.5 degrees. 
     
     
         11 . The communication system of  claim 10 , wherein said beam peak is between said first and third nulls in angle, and said first and third directions are substantially 2 degrees apart in angle. 
     
     
         12 . The communication system of  claim 10 , wherein said fourth null is adjacent to said third null by said angle less than 0.3 degrees 
     
     
         13 . The communication system of  claim 9  configured to form said beam further comprising a third null in a third direction different from said first and second directions and a fourth null adjacent to said third null, and a peak of a second side lobe between said third and fourth nulls in angle, wherein said peak of said second side lobe is at a gain level below greater than 40 dB from said beam peak. 
     
     
         14 . The communication system of  claim 13 , wherein said beam peak is between said first and third nulls in angle, and said first and third directions are substantially 2 degrees apart in angle. 
     
     
         15 . A communication system configured to form a beam comprising a beam peak in a first direction, a first null in a second direction different from said first direction, and a second null adjacent to said first null by a first angle less than 0.5 degrees, wherein said first and second directions are substantially 2 degrees apart in angle. 
     
     
         16 . The communication system of  claim 15  configured to form said beam further comprising a third null in a third direction different from said first and second directions and a fourth null adjacent to said third null by a second angle less than 0.5 degrees. 
     
     
         17 . The communication system of  claim 16 , wherein said fourth null is adjacent to said third null by said second angle less than 0.3 degrees. 
     
     
         18 . The communication system of  claim 15  configured to form said beam further comprising a third null in a third direction different from said first and second directions and a fourth null adjacent to said third null, and a peak of a second side lobe between said third and fourth nulls in angle, wherein said peak of said second side lobe is at a gain level below greater than 40 dB from said beam peak. 
     
     
         19 . The communication system of  claim 18 , wherein said beam peak is between said first and third nulls in angle, and said first and third directions are substantially 2 degrees apart in angle. 
     
     
         20 . The communication system of  claim 15 , wherein said second null is adjacent to said first null by said first angle less than 0.3 degrees.