Methods and apparatus for testing wireless devices. Devices being tested
receive and transmit radio frequency test signals. These radio frequency test signals
are received or transmitted using an antenna associated with the device, and then
are transmitted or received using a unique wide-band tapered-slot antenna connected
to a test system. The wide-band tapered-slot antenna has an input path that is
substantially orthogonal to the tapered slot, and one of the conductors defining
the slot is grounded.