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How it works
The Technology
Although not a trivial design, the Vortis antenna technology operates in a relatively simple manner using established interferometric techniques ordinarily used in other disciplines but designed for near field conditions. In its simplest embodiment the Vortis is a two-element antenna array connected to the RF output of any wireless device and is isolated from the circuit. It may look like a pair of small antennas on each side of the small wireless device. The Vortis is interconnected through a built in printed circuit board of a unique patented (pending) design. It may be embedded within the cellular phone or other wireless devices.
The Vortis exploits the concepts of symmetry by emitting two signals, each of opposite polarity (in-phase and out-of-phase; a wave and an anti-wave). It is designed so that the user or sensitive circuitry of the antenna is on or near the symmetry axis where the two signals converge. On and near the symmetry axis, the two signals add to null each other out thus reducing the amount of RF (Radio Frequency) energy. Tests in idealized conditions indicate nulls of –30dBi (plus or minus 10%) can be achieved in 180 degrees (plus or minus 15% depending on the symmetry of the host). Naturally, the host (cellular phone that the Vortis is installed in) will cause this number to vary depending on several factors. Third party testing of prototypes indicates a null of around 20 dBi.
By controlling the characteristics of the array (two elements are used in our current model) the Vortis creates in-phase and out-of-phase energy signals that cancel each other out at the point of intersection. The electromagnetic waves radiating from the elements combine to form symmetrical fringe patterns and cancel out in order to reduce or eliminate undesirable radiation lateral to the antenna array (left and right of user). The Vortis operates on all major carrier frequencies.
Through the placement of antenna elements, phase-shifting and power division, a significant reduction of the Specific Absorption Rate (SAR) can be achieved.
Spatial nulls are symmetrical and occur at intersections of the elements and then vector outward just as a wide beam lighthouse beam would vector outwardly. Stability is achieved using power and phasing distribution circuits that maintain balance between elements. While reducing energy in areas lateral to the antenna, the radiating energy is enhanced in directions forward and rear of the user. Depending on a particular embodiment of the concept, antenna gains of +2 to +5 dB (improvements of 1.6 to 3 times) may be realized. This tends to provide enhanced signal strength in desired areas such as toward cell sites. Due to the properties of electromagnetic wave propagation, the null areas lateral to the user tend to close in at the far fields (backfill) as waves propagate outwardly at the normal propagation pattern. This provides an effective communications area over 320 degrees surrounding a user and makes the Vortis practical without experiencing increased dropped calls due to poor connection. Normal cell site placement and multi-pathing close up the gap to prevent lost calls.
Antennas may be embedded or external, if desired, both offering equal benefits. This concept is applicable to many radio frequency applications ranging from low frequencies to microwaves.
Development, design and technical support for the implementation of this concept into any particular telephone, wireless terminal, personal communications device, product add-on, or the like is available at all levels of the development phase.