Sensing device having multi beam antenna array

Abstract

Provided is a sensing device having a multi beam antenna array. The sensing device includes an antenna array including a plurality of antennas, a plurality of low noise amplifiers respectively connected to the antennas to amplify radio frequency signals received from the respective antennas, a delay line box including a plurality of delay lines, each delay line delaying the signals amplified by the low noise amplifiers for a predetermined time, and a detector detecting the output signals of the delay ling box.

What is claimed is: 
     
         1 . A sensing device having a multi beam antenna array, comprising:
 an antenna array comprising a plurality of antennas;   a plurality of low noise amplifiers respectively connected to the antennas to amplify radio frequency signals received from the respective antennas;   a delay line box comprising a plurality of delay lines, each delay line delaying the signals amplified by the low noise amplifiers for a predetermined time; and   a detector detecting the output signals of the delay line box.   
     
     
         2 . The sensing device of  claim 1 , wherein the antenna array is manufactured using a microelectromechanical systems (MEMS) process. 
     
     
         3 . The sensing device of  claim 1 , wherein the antenna array comprises a timed array. 
     
     
         4 . The sensing device of  claim 1 , wherein the antenna array is used in a hamming antenna array manner. 
     
     
         5 . The sensing device of  claim 1 , wherein the delay line box comprises load resistances connected between both ends of the plurality of delay lines and a ground terminal. 
     
     
         6 . The sensing device of  claim 1 , wherein the detector is realized as a diode. 
     
     
         7 . The sensing device of  claim 6 , wherein the diode comprises a millimeter wave zero bias GaAs schottky diode. 
     
     
         8 . The sensing device of  claim 6 , wherein the diode comprises a tunnel diode. 
     
     
         9 . The sensing device of  claim 1 , further comprising an inductor for an inductance coupling, wherein output signals of the detector are transmitted by the inductance coupling.