Patent ID: 6870507

Claim:
A miniature broadband microstrip patch antenna comprising at least first and a second conducting parallel surfaces and a conducting ground plane the first conducting surface acting as an active element being placed substantially parallel on top of said ground plane and including a feeding point, the second conducting surface acting as a parasitic element placed above said first surface, said patch antenna characterized in that at least one of said first or second conducting surfaces consists of a planar ring comprising an inner and outer perimeter wherein the shape of at least one of said inner and outer perimeters is a space-filling curve, said space-filling curve being composed by at least ten segments, said segments connected with each adjacent segment, and forming an angle with each adjacent segment, no pair of adjacent segments defining a larger straight segment, wherein said space-filling curve never intersects with itself at any point except the initial and final points, and wherein said segments must be shorter than a tenth of the free-space operating wavelengths.