Electromagnetic Field Interference on Transmission Lines due to On-Board Antenna

Figure 10

(a) Two paths away from antenna: one path is along the edge of the board and the other one is along the center line of the board. -field distributions (e) without board along the path, (b) with board at 10 mm away from antenna (near field) along the edge of board, (c) with board at 5λ (0.55 m, near field) away from antenna along the edge of board, (d) with board at 10λ (1.1 m, far field) away from antenna along the edge of board, (f) with board at 10 mm away from antenna (near field) along the center line of board, (g) with board 5λ (0.55 m, near field) away from antenna along the center line of board, and (h) with board at 10λ (1.1 m, far field) away from antenna along the center line of board.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)