As we know, transporting through shields is not possible. It gives a good plot device for writers and I'm OK with that, but this occured to me. Do the shields have to be down all around the ship for the transporter beam to reach the ship? Here's a very nice image I made with unvelievable photoshop skills. OR... is the transporterbeam such a delicate energy pattern that even getting close to the shields would be a problem.