Patent ID: 7619582

Claim:
A smart antenna, comprising: a monopole antenna having a reverse triangle plane for receiving and transmitting a signal; a first conductor with a first switch diode disposed on a first side of the monopole antenna and electrically connected to a ground, for conducting one of actions of directing the signal and reflecting the signal to the monopole antenna; a second conductor with a second switch diode disposed on a second side of the monopole antenna and electrically connected to the ground, for conducting one of actions of directing the signal and reflecting the signal to the monopole antenna; a circuit device electrically connected between the first conductor and the second conductor, for turning on/off the first switch diode and the second switch diode; and at least one groove disposed in the ground and horizontal with the ground, for concentrating a current of the signal received from/transmitted to the monopole antenna, wherein the smart antenna switches among four patterns formed by selectively turning on/off the first switch diode and the second switch diode.