A antenna module comprises various different single-band miniature antennas respectively coupled to and hid inside individual batteries, and each antenna shares original terminals of the individual battery; the antenna module is allowed to use the terminals to electrically connect to a main body of a wireless communication device to enable the individual antenna module to receive signals in a different frequency range and the wireless communication device to be unnecessary to be disposed with various different single-band antennas. Whereby, space for original disposition of various different single-band antennas can be saved for the disposition of other components.