The antenna is one of the fundamental distinctions between a wired and a wireless system. The design of the antenna impacts the development of each component-from the circuit design to the receiver structure and coding technique, as well as the channel access protocol - employed in future wireless communication networks. The most challenging environment for the design of each component is where the communication devices are extremely small, low power computing and consuming mobile terminals. Furthermore, these terminals may be able to move randomly and organize themselves in an ad hoc communication structure. Such a network of communication terminals is referred to as a Mobile Ad Hoc NETwork (MANET). In this project, it is proposed to investigate the used of smart (adaptive) antennas to improve channel quality in a MANET. The design of a smart antenna for a MANET will pose many challenges in antenna, feed network, signal processing, communication and protocol designs.