Abstract: An antenna includes a dipole radiator region forming a series resonant tank having a first quality factor value Q1, and a loop compensator/radiator region integral with the dipole region and forming a parallel resonant tank having a second quality factor value Q2 that is substantially equal to Q2. The antenna may be a conductive sheet antenna (e.g., comprising copper tape) having a generally “A” shaped structure with a discontinuity in a middle segment.

Abstract: Described are a device and a method for canceling a magnetic field and/or an electric field emitted from a device. The device includes a housing including an inner wall and an outer wall, a sense coil located within the inner wall of the housing in proximity to a user's ear, the sense coil sensing a magnitude, polarization and a polarity of an inbound magnetic field within the housing, and an induction coil located between the outer wall and the inner wall of the housing, the induction coil generating an outbound magnetic field having the same polarization and an opposing polarity to the polarity of the inbound magnetic field. The method includes sensing, by a sensing coil, a magnitude and a polarity of an inbound magnetic field, the sensing coil located within a housing of a device, and applying a current to an induction coil to generate an outbound magnetic field having an opposing polarity to the polarity of the inbound magnetic field, the induction coil located within the housing of the device.

Abstract: An electronic device comprises a transceiver and a probe. The transceiver is connected to a first antenna and a second antenna. The first and second antennas are configured to one of transmit and receive radio frequency signals. The first and second antennas are configured to exhibit a polarized diversity. The probe re-establishes the polarized diversity when the polarized diversity has been disrupted.

Abstract: A dual polarization antenna system includes a dipole antenna oriented along a first plane (e.g., a horizontal plane), and a monopole antenna oriented along a second plane (e.g., a vertical plane) orthogonal to the first plane, wherein the monopole antenna is referenced to a V-null point of the dipole antenna.

Abstract: An antenna includes a dipole radiator region forming a series resonant tank having a first quality factor value Q1, and a loop compensator/radiator region integral with the dipole region and forming a parallel resonant tank having a second quality factor value Q2 that is substantially equal to Q2. The antenna may be a conductive sheet antenna (e.g., comprising copper tape) having a generally “A” shaped structure with a discontinuity in a middle segment.

Abstract: Described herein are devices, systems and methods for compensating a frequency response of an antenna to an electronic device, such as a radio frequency identification (“RFID”) reader. An exemplary embodiment is a device including at least one radio frequency (“RF”) source for transmitting RF signals, at least one RF receiver for receiving RF signals, an antenna in simultaneous communication with the RF source and the RF receiver, and at least one distributed RF compensator network controlling an operating RF between the antenna and the communication device, wherein the at least one distributed RF compensator creates a particular antenna impedance that operates with a directional coupler and increases an RF isolation between the RF source and the RF receiver across a particular frequency region.

Abstract: Described are a device and a method for canceling a magnetic field and/or an electric field emitted from a device. The device includes a housing including an inner wall and an outer wall, a sense coil located within the inner wall of the housing in proximity to a user's ear, the sense coil sensing a magnitude, polarization and a polarity of an inbound magnetic field within the housing, and an induction coil located between the outer wall and the inner wall of the housing, the induction coil generating an outbound magnetic field having the same polarization and an opposing polarity to the polarity of the inbound magnetic field. The method includes sensing, by a sensing coil, a magnitude and a polarity of an inbound magnetic field, the sensing coil located within a housing of a device, and applying a current to an induction coil to generate an outbound magnetic field having an opposing polarity to the polarity of the inbound magnetic field, the induction coil located within the housing of the device.

Abstract: Methods, systems, and apparatuses for automated manufacturing microstrip element antennas is described. The microstrip element antenna comprises a printed circuit layer, a dielectric layer and a ground plane layer. Mass manufacturing process for such microstrip element antennas without any substantial manual assembly process is described. Automation of the manufacturing steps leads to lower production costs, faster production and a higher yield.

Abstract: An electronic device comprises a transceiver and a probe. The transceiver is connected to a first antenna and a second antenna. The first and second antennas are configured to one of transmit and receive radio frequency signals. The first and second antennas are configured to exhibit a polarized diversity. The probe re-establishes the polarized diversity when the polarized diversity has been disrupted.

Abstract: A mobile device with a multi-functional external antenna comprises a housing and an external antenna. The external antenna is disposed at least partially on the housing and conforms to the housing. The external antenna is configured to one of receive wireless data signals and transmit wireless data signals. The external antenna is further configured to conduct power signals.

Abstract: Methods, systems, and apparatuses for automated manufacturing microstrip element antennas is described. The microstrip element antenna comprises a printed circuit layer, a dielectric layer and a ground plane layer. Mass manufacturing process for such microstrip element antennas without any substantial manual assembly process is described. Automation of the manufacturing steps leads to lower production costs, faster production and a higher yield.

Abstract: Methods, systems, and apparatuses for mobile devices and antenna thereof, are described herein. A mobile device include RFID reader functionality, and functionality for communicating with one or more wireless networks. A single antenna of the mobile device accommodates the network communication functionality and the RFID reader functionality. The communications network is any type of communications network, including a personal area network (PAN), a local area network (LAN), a wide area network (WAN), or a cell phone network. An antenna pattern of the antenna may be configurable. For example, a gain of the antenna may be varied, the antenna pattern may be shaped, directed, and/or polarized, the antenna pattern may be steered, and/or the antenna pattern may be ranged.

Abstract: Methods, systems, and apparatuses for RFID devices, such as reader antennas, are described. A reader antenna includes a quadrature hybrid coupler, a termination element, and an antenna, such as a patch antenna. The quadrature hybrid coupler has first, second, third, and fourth ports. The first port receives an input radio frequency RF signal. The second port outputs a first RF output signal. The third port outputs a second RF output signal. The second RF output signal is shifted in phase by 90 degrees relative to the first RF output signal. The fourth port is coupled to the termination element. The patch antenna has a first point coupled to the first RF output signal and a second point coupled to the second RF output signal. The patch antenna radiates a circularly polarized RF signal due to the received first and second RF output signals. The circularly polarized RF signal may be used to interrogate tags.

Abstract: A mobile computing device as described herein includes an integrated UHF radio frequency identification (“RFID”) reader and UHF RFID reader antenna within the housing of the device. The mobile computing device supports traditional general purpose functions, such as data capture, scanning, imaging, or the like, in addition to RFID reader functions. The housing of the device fully encloses the RFID reader and antenna such that the RFID components are permanently enclosed by the housing. The integrated design of the device eliminates the need for an RFID accessory and provides for multi-tasking and multi-functioning.

Abstract: Methods and apparatus are provided for mode diversity radio frequency identification (RFAID). The apparatus comprises a first transducer configured to receive a first radio frequency (RF) signal, a second transducer configured to receive an acoustic signal, and an impedance modulator coupled to the first transducer and the second transducer and configured to emit a signal identifying an RFAID tag when the first transducer receives the first RF signal and/or the second transducer receives the acoustic signal. The method comprises transmitting an RF signal and an acoustic frequency signal, and detecting a first modulated signal indicating an RFAID transponder. The first modulated signal is based on one of the RF signal and the acoustic signal.

Abstract: A portable/handheld device is provided having a processing module configured to selectively operate a reading mode selected from a far-field mode and a near-field mode, and a directional antenna array coupled to the processing module. The directional antenna array includes a first antenna element configured to radiate electromagnetic (EM) radiation in a far-field, and a second antenna element coupled to the first antenna element. The second antenna element is configured to radiate EM radiation in a near-field. The second antenna element includes an antenna transducer configured to selectively cancel far-field EM radiation from the first antenna element. A method of reading inductively coupled radio frequency identification (RFID) tags is also provided having the steps of scanning at least one frequency band to detect a RFID tag, and selectively radiating one of a near-field electromagnetic (EM) field and a far-field EM field based on the detected RFID tag.

Abstract: An object location system and method is provided for locating objects. The system includes an RFID reader, an angle calculator, and a distance calculator to determine which of a plurality of zones an object is located in or passing through. An RFID tag is affixed with the object that is to be located. The RFID reader transmits signals to the RFID tag and receives backscatter-modulated signals from the RFID tag at one or more RFID antennas. From those received signals, the angle calculator determines an angle of position of the RFID tag relative to the RFID antenna. From the angle of position the zone in which the object is located is determined.

Abstract: An apparatus is provided for an inventory transport device having a fixed section and a movable section. The apparatus comprises a RFID reader device mounted on the movable section; and a RFID power device mounted on the fixed section. The RFID power device provides power to the RFID reader device without physical contact.

Abstract: A directional antenna array is provided that includes a driven element and a first parasitic element separated from the driven element with the first parasitic element and/or the driven element having a width that is greater than about one-half a percent (0.5%) of an free-space wavelength of the directional antenna array. Alternatively or in conjunction, the directional antenna array includes a balun structure that is configured to couple the driven element to at least one of an electromagnetic energy source and an electromagnetic sink, and the balun structure includes a dipole structure, a first feed point extending from the dipole structure and a second feed point extending from the first parasitic element.