TRANSMIT AND RECEIVE ANTENNA HAVING ANGLED CROSSOVER ELEMENTS

摘要

An antenna (102) for simultaneously transmitting and receiving electromagnetic energy is disclosed. The antenna (102) includes first and second transmit element (104, 106) and a transmitter (108) for supplying a first current to the first transmit element (104) and a second current to the second transmit element (106) such that the first and second transmit elements (104, 106) radiate electromagnetic fields. Preferably, the supplied first and second currents are substantially equal. The antenna (102) also includes a sensor (120) for sensing differences between currents flowing through the first and second transmit elements. The differences are caused by an electromagnetic field external to the antenna such that antenna effectively receives the external electromagnetic field by sensing the current differences.