| 摘要 |
An antenna assembly for transmitting electromagnetic signals to and receiving electromagnetic signals from a conductive member. The antenna assembly comprises a reflector member, a focus rod, a focus element, and an insulating member. The reflector member defines a reflecting surface having a substantially parabolic cross-section. The focus element has a first surface and is mounted on the focus rod. The insulating member mounts the focus rod on the reflector member such that the focus element is arranged substantially at the focal point of the reflecting surface with the first surface facing the reflecting surface. When the reflector member is arranged with the reflecting surface facing the conductive member, the antenna assembly operates in a transmit mode or a receive mode. In the transmit mode, electromagnetic signals travel along the focus rod, radiate from the focus element, and reflect off of the reflecting surface and are transmitted to the conductive member. In the receive mode, electromagnetic signals travelling along the conductive member radiate from the conductive member, reflect off of the reflecting surface, excite the focus element, and travel through the focus rod.
|
