Abstract: A low profile, planar, wide band (e.g., 600 MHz to 5 GHZ) antenna assembly consisting of four subarrays, each subarray consisting of a set of planar elements connected in a dipole. The elements may be disposed on a first layer or surface of a non-conductive substrate such as a printed circuit board. A second set of subarrays may also comprise planar elements disposed on a second layer of the substrate and operates as a GPS antenna. The elements on the second layer overlap somewhat with the elements on the first layer to provide a partial ground plane for the elements on the first later. A beamforming circuit may be coupled to the sub-arrays, depending on configuration. The assembly may be placed on a windshield or rear window of a vehicle, such as a passenger car near the roof.

Abstract: A low profile, conformal antenna assembly provides wide bandwidth, orientation dependent and directional operation via volumetric radiating elements that are diposed over a cavity. The volumetric antenna elements may be further controlled by embedded inductive or capacitive components and/or surrounded by frequency-selective components. An optional AM/FM radiating structure is provided by a conductive wire helix disposed within the cavity. The antenna assembly may be integrated with system and control, conversion, amplification and/or processing electronics in a single enclosure or tightly coupled enclosure space. Integrating the antenna subassembly with an electronics subassembly in the same enclosure eliminates the requirement for discrete RF signal connections reduces associated costs, and avoids signal losses in the connections to multiple vehicle systems. The antenna can be mounted to the inside surface of glass in a vehicle.

Abstract: A high-speed, portal-based system that can rapidly identify the presence of viruses such as COVID-19 and its antibodies in vivo. The system uses a low-power, stimulated emissions Nuclear Magnetic Resonance (NMR) effect and associated signal processing to detect the presence of organics characteristic of the virus (such as 15N, 14N, 1H, and/or 13C). The walkthrough portal enables non-invasive, real-time screening at a low cost. Detection can be reliably made in vivo when the virus or antibody is present in the saliva, chest, lungs, or other organs at total counts as low as 108 copies per ml.

Abstract: Methods and apparatus for detecting body vital signs through the use of a Bioelectric Impedance Spectroscopy (BIS), either by (a) direct contact with the person (such as through one or more of their fingers) or (b) measurement of reflections from a field projected into the person's body. The techniques may be implemented using the projected capacitive touch array in a device such as the screen of a smartphone or tablet computer, or the touchpad of a laptop computer.

Abstract: An apparatus, system, and method directed to the charging of electronic devices, and in particular to the wireless charging of battery enabled devices using FM band signals

Abstract: An apparatus, system, and method directed to the charging of electronic devices, and in particular to the wireless charging of battery enabled devices using FM band signals.

Abstract: An improved remote keyless entry (RKE) system for a vehicle to provide enhanced capabilities to a user. The improved RKE system may utilize directional antennas in the vehicle and in the FOB. Directional antennas may utilize devices equipped with orientation-independent antennas to determine the location. The system can exist in many different customizable configurations, sometimes utilizing orientation-independent antennas embedded in the vehicle or the FOB. The devices, systems and methods described herein may be used for an RKE in personal or commercial vehicles.

Abstract: A device suitable for use as a scanning directional radio receiver or transmitter.

Abstract: We present several unique techniques for using touch sensor arrays to detect fingerprint information and authenticate a user.

Abstract: An antenna array consists of multiple sub-arrays of planar, rectangular conductive patches disposed over a cavity to provide a volumetric antenna array. Each sub-array consist of multiple patch elements, arranged typically in a square or rectangular pattern. Multiple sub-arrays are further arranged along a one-dimensional row, to provide one or more unit cells. Adjacent sub-arrays in a row may be oriented at 45 degrees with respect to one another. The assembly provides a wide bandwidth, orientation dependent, directional antenna via volumetric radiating elements that can be conformal to exterior surface(s) of a vehicle such as a roof or trunk or roll bar of a passenger car.

Abstract: A human safe wireless charging system using a circularly polarized source antenna that can radiate in either a hemispherical pattern or directional cardiod-like patterns at a 40-50, 150, or 200 MHz frequencies to a receiving loop antenna which is coupled to a parasitic receive element.

Abstract: An antenna assembly operating in the AM/FM, 3G and 4G cellular, WiFi, Bluetooth, satellite and 5G bands. The assembly provides a wide bandwidth, orientation dependent, directional antenna via volumetric radiating elements that conformal to exterior surface(s) of a vehicle such as a passenger car. The volumetric antenna elements may be further controlled by embedded components and/or surrounded by controllable ground plane elements. In one application, the antenna may be used to detect a direction of approach by person to, for example, operate only certain door locks.

Abstract: A device suitable for use as a scanning directional radio receiver or transmitter.

Abstract: A scanning Dielectric Travelling Wave Array (DTWA) device suitable for use as a wideband, tunable, two-dimensional beamformer. The device is formed from a set of planar waveguides, elongated waveguide sections and/or progressive delay layers. By controlling the index of refraction (?) of the waveguides, waveguide sections, and/or progressive delay layers, the device to aim at a particular angle of incidence of energy arriving on the top face, in both azimuth and elevation. These indi(cies) of refraction may be controlled with a set of varactors. By observing a constraint on the size of the waveguides as related to the bandwidth of the signals of interest, the waveguide can to receive from or transmit to different directions at the same time. The varactors may be provided by continuous strips of material disposed along the top and bottom of each waveguide section, or as a set of discrete controllable sections distributed along the primary axis of each waveguide section.

Abstract: An antenna array for use in a passenger vehicle. Four of the roof support pillars are used as antenna elements. Each of the four pillars is electrically connected or coupled to one end of a corresponding meanderline component. The other end of each meanderline is in turn coupled to a radio receiver, typically through a combining network.

Abstract: A Multiple Input Multiple Output (MIMO) antenna system and operating method that provides spatial- and temporal multiplexing with polarization independent operating modes.

Abstract: A wireless network accommodates mobile devices that provide directive radiation over multiple frequencies, multiple polarizations, and/or operate in modes that reduce unnecessary radiation into a nearby human body.

Abstract: We present several unique techniques for using touch sensor arrays to detect fingerprint information and authenticate a user.

Abstract: An apparatus, system, and method directed to the charging of electronic devices, and in particular to the wireless charging of battery enabled devices using FM band signals

Abstract: A suite of antennas integrated into a vehicle roll bar adjacent to a glass roof that allows for the sending and receiving of signals, which replaces antennas that are commonly placed on the roof of the vehicle, side view mirrors, or near the rear-view mirror at the front on the vehicle.