FWT and Multi-path, Polarization, Dual Diversity

FWT antenna elements are a good choice for building a communications links in the unlicensed ISM bands (>2 GHz) that address effects of multi-path, polarization and use of dual diversity. As communication system frequencies increase, reflections are more likely to occur from natural boundaries (e.g.,floors, walls trees). As the intended receiver antenna is subject to energy that arrives from different paths, as a direct result of the increased reflections, the bandwidth and ability to transmit intelligible information is greatly reduced. Accordingly, multi-path solutions must be found for any wireless system hoping to push the maximal bit rate and optimize comparative communication performance.

One strategy uses two antennas, each oriented (or polarized) in orthogonal planes so that one obtains a good, reflection free signal. FWT antennas can use two classic elements, one vertically polarized and the other horizontally polarized, with the selection switch embedded into the antenna dielectric as well as LNA or any other RF signal processing components.

Another option is to use FWT antenna with some directional gain. Susceptibility to multi-path reflection interference is significantly reduced as the directional gain is increased. FWT devices have higher than normal gains in a smaller size and designers can now use this technology to improve system performance.

A focusing FWT dipole has a gain >6 dBi and significantly reduces the possible multi-path acceptance angles. A high front to back ratio (> 13 dB) and low side lobes provide the perfect solution for wide information bandwidth applications. The dielectric lens shape and orientation within the FWT antennas naturally suppress reflected, polarized energy.

Top View of a focusing (selective, yet a generous broadcast zone) dielectric wave shape. Inside, the dielectric embedment antenna elements efficiently convert electrical signals into broadcast power! FWT technology offers 3-D antennas and can address any multi-path or beam propagation effects. FWT Technology can transform your product by reducing the antenna size and footprint; while providing increased range and reducing multi-paths!