Patent ID: 6618002
Filing Date: 2003-09-09
Classification: G01S,H01Q

Abstract:
A high frequency (HF) radar installation, comprising:a) a transmit/receive antenna having an array of antenna elements, each antenna element comprising a dipole antenna including first and second skeletal pyramids disposed such that an apex of one of the pyramids is adjacent to an apex of the other of the pyramids, the pyramids having at least individual edges comprising electrically conductive members, and stay means for maintaining the conductive members in a predetermined spatial relationship with each other; and b) a plurality of transmit/receive assemblies, each assembly including, for each antenna element, a power transmitter for generating radio frequency signals, a receiver for receiving radio frequency signals, and a duplexer for coupling an output of the power transmitter and an input of the receiver to a common port to the transmit/receive antenna.