Abstract: A microwave antenna device on PCMCIA network cards for notebook computers includes; extended base, which is connected to input port of PCMCIA network card, has pivot acceptor symmetrically located on the outer side of extended base, T-shaped pivot which is capable of 180-degree rotation about the vertical axis, is then supported by pivot acceptor. Tunnel is inside pivot and extended base, in which HF (high frequency) transmitting wire from input port passes through up to the top of pivot. Plate which is capable of 90-degree rotation in both clockwise and counter-clockwise direction is hooked up on pivot. Plate which is capable of 90-degree rotation in both clockwise and counter-clockwise direction is hooked up on pivot. Plate or bar microwave antenna is capped on pivot and connected through HF transmitting wire. In accordance with the above description, plate microwave antenna has the advantage of foldable for transportation easy to setup, receiving angle optimisable and preventing from breaking design.