Saab has filed a patent for a notch antenna structure that includes multiple notch antenna elements arranged in rows. Each element consists of a base portion with two opposing surfaces, two vertically extending electrically conductive bodies, and a tapering gap between them. The structure has a bottom plane to receive the elements, and the first conductive body has a leg portion with a feed arrangement near the tapering gap. The patent aims to improve antenna performance and efficiency. GlobalData’s report on Saab gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Saab, lidar scanners was a key innovation area identified from patents. Saab's grant share as of September 2023 was 65%. Grant share is based on the ratio of number of grants to total number of patents.
A notch antenna structure with multiple antenna elements
A recently filed patent (Publication Number: US20230318191A1) describes a notch antenna structure that includes multiple notch antenna elements arranged in at least one row. Each notch antenna element consists of a base portion with opposing surfaces, two electrically conductive bodies extending vertically from one surface, and a tapering gap between them. The structure also includes a bottom plane to receive the second surface of the antenna elements. The first electrically conductive body has a leg portion with a feed arrangement near the tapering gap.
In one embodiment, the notch antenna elements are joined at the base portion to form a common integral row. The base portion may have a through hole via for accessing the feed point. The first electrically conductive body includes a second leg portion integral with the base portion's first surface, separated from the leg portion by a distance (d).
The notch antenna elements form a three-dimensional (3D) metal structure with length (L), width (W), and thickness (T) in orthogonal directions (x, y, z). The bottom plane has a recess along the second direction (y) to accommodate the row of antenna elements. The 3D metal structure can be a solid metal structure.
Each electrically conductive body may have a circumferentially enclosed cavity at an interior portion. The conductive bodies extend from a lower portion to a tapered upper portion, with the cavity following the outer contour of at least the tapered upper portion.
The feed arrangement includes a connector integral with the leg portion, which can be a coaxial connector. The tapering gap can be either step-wise or continuously tapering.
The patent also mentions a vehicle comprising the described notch antenna structure.
In summary, the patent describes a notch antenna structure with multiple antenna elements arranged in a row. The structure includes specific features such as a tapering gap, a bottom plane, and a feed arrangement. The antenna elements form a 3D metal structure, and the patent also mentions the use of a coaxial connector. The patent also extends the application of the notch antenna structure to vehicles.