for different times, sometimes using several different methods in turn, which make up what's called the charging algorithm. A charger like this is constantly sensing what the batteries inside it are doing and adjusting the charging process
Obviously, the waves arriving at an antenna from a transmitter are exactly the same, no matter what shape and size the antenna happens to be. A different pattern of dipoles will help to concentrate the signal so it's easier to detect. That effect can be increased even more by adding uncon...