Multi-band dipole antenna assemblies for use with wireless application devices

摘要

According to various aspects, antenna elements are provided for multi-band sleeve dipole antenna assemblies for use with wireless application devices. The antenna elements generally include first and second radiating elements. The first radiating elements may be tuned for receiving electrical resonant frequencies within a first frequency bandwidth. The second radiating elements may be tuned for receiving electrical resonant frequencies within a second frequency bandwidth different from the first frequency bandwidth.

主权项

1. An antenna element for a multi-band sleeve dipole antenna assembly that is configured to be externally installed to a wireless application device, the antenna element comprising:
a body; a first radiating element tuned for receiving electrical resonant frequencies within a first frequency bandwidth; a second radiating element tuned for receiving electrical resonant frequencies within a second frequency bandwidth different from the first frequency bandwidth; at least part of the first radiating element and/or at least part of the second radiating element having a non-planar construction defining a non-solid interior portion; wherein the first and second radiating elements are integrally, monolithically defined at least partly by the body; wherein the antenna element is stamped from a single sheet of conductive material forming the first radiating element and the second radiating element such that the first and second radiating elements are monolithically or integrally formed as one piece of material; wherein the first and second radiating elements have rounded outer perimeters and share a common longitudinal axis where a radius of curvature of the first radiating element is the same as that of the second radiating element to monolithically form a partial cylinder shape; wherein a side portion of the partial cylinder shape includes an open slot formed between a first side of the first radiating element and a first side of the second radiating element such that the side portion is open; wherein a second side of the second radiating element opposite its first side is coextensive with or defined by a second side of the first radiating element opposite its first side; whereby the first and second radiating elements are configured for use with a multi-band sleeve dipole antenna assembly that includes a ground in the form of a metallic cylindrical hollow sleeve to which the antenna element is coupled by a coaxial cable that extends through the sleeve to the antenna element; and wherein the sleeve includes a length that is a fraction of a wavelength of a lower operating frequency band of the first frequency bandwidth and the second frequency bandwidth such that the sleeve contributes to the frequency characteristics of the antenna element.