   EE HH I  L x y z

The teacher remembers some calculus.

x y z x I  L 2 I  L 1  EE HH   11 22

EE z I  L 2 I  L 1 h h h       

EE z I  L 2 I  L 1 h h       

EE z I  L 2 I  L 1 h h       

x y z x I  L 2 I  L 1  EE HH   11 22

EE z I  L 2 I  L 1 h h h       

EE z I  L 2 I  L 1 h h       

EE z I  L 2 I  L 1 h h       

I(z) confined to length of antenna  max  at z = 0 Integrable function h

z z’    ’  ’ method of moments can be used

z  

P r is power radiated spherically into 4  steradians

EE z I(  )  L 2 I(0)  L 1 h h        phase

EE z I(  )  L 2 I(0)  L 1 h h       

Movie to illustrate the radiation pattern of a phased array antenna – mpg movie.

x=