Patent ID: 8253642

Claim:
A leaky-wave antenna capable of multi-plane scanning, comprising: a substrate; a first antenna series and a second antenna series, disposed on the substrate, and comprising a plurality of antenna units, wherein the first antenna series intersects with the second antenna series to share a predetermined antenna unit among the antenna units, and a part of the antenna units are connected in series to extend outwards from a first and a second transmission lines of the predetermined antenna unit to form the first antenna series, and the other antenna units are connected in series to extend outwards from a third and a fourth transmission lines of the predetermined antenna unit to form the second antenna series; and a plurality of control units, disposed at peripheral of the predetermined antenna unit for controlling transmission paths between the first to the fourth transmission lines and the antenna units, and switching a leaky beam to one of a plurality of scanning planes, wherein the leaky beam scans along with a frequency variation through the antenna units.