Abstract: An antenna arrangement comprising: a conductive element comprising three slots radially extending from a common center void; and a first feed and a second feed wherein the first feed is a single line feed and the second feed is a single line feed.

Abstract: An antenna arrangement comprising: a conductive element comprising three slots radially extending from a common center void; and a first feed and a second feed wherein the first feed is a single line feed and the second feed is a single line feed.

Abstract: A filter comprises a dielectric resonator element and a cylindrical waveguide cavity having a corrugated tube structure that surrounds the dielectric resonator element such that an outer encircling wall surface of the dielectric resonator element is in contact with an inner sidewall of the corrugated tube structure. The corrugated tube structure includes one or more spaced-apart corrugations configured to provide a spring-like action to controllably expand and contract the corrugated tube structure so that the dielectric resonator element can be controllably inserted and clamped within the cylindrical waveguide cavity. The geometry of the spaced-apart corrugations can be selected to define a rotationally asymmetric corrugated tube structure configured to split a plurality of fundamental modes of electromagnetic waves within the filter.

Abstract: A filter comprises a dielectric resonator element and a cylindrical waveguide cavity having a corrugated tube structure that surrounds the dielectric resonator element such that an outer encircling wall surface of the dielectric resonator element is in contact with an inner sidewall of the corrugated tube structure. The corrugated tube structure includes one or more spaced-apart corrugations configured to provide a spring-like action to controllably expand and contract the corrugated tube structure so that the dielectric resonator element can be controllably inserted and clamped within the cylindrical waveguide cavity. The geometry of the spaced-apart corrugations can be selected to define a rotationally asymmetric corrugated tube structure configured to split a plurality of fundamental modes of electromagnetic waves within the filter.

Abstract: An apparatus is provided to mitigate the adverse effects of mutual coupling. The apparatus includes a ground plane and first and second active radiators spaced from the ground plane. The first and second active radiators are configured to the electrically coupled to at least one of a receiver, a transmitter or a transceiver. The antenna also includes a grounded radiator electrically coupled to the ground plane and positioned between the first and second active radiators. The ground plane defines a non-conductive slot positioned between the first and second active radiators and bounded by the ground plane.

Abstract: A multi-filtenna system is provided that effectively combines an antenna element and a filter element in a compact design while concurrently providing adequate port isolation, a low ECC, a low insertion loss (and a corresponding high efficiency) and a similar radiation pattern for each antenna element in order to allow for multi-channel beam forming. A multi-filtenna system includes a plurality of filtennas disposed in parallel proximate one another. Each filtenna includes a port, one or more resonator sections coupled to one another and a radiating resonator. The one or more resonator sections are disposed between the port and the radiating resonator. Each of the plurality of filtennas are configured to communicate via the port and to operate at the same frequency.

Abstract: An apparatus is provided to mitigate the adverse effects of mutual coupling. The apparatus includes a ground plane and first and second active radiators spaced from the ground plane. The first and second active radiators are configured to the electrically coupled to at least one of a receiver, a transmitter or a transceiver. The antenna also includes a grounded radiator electrically coupled to the ground plane and positioned between the first and second active radiators. The ground plane defines a non-conductive slot positioned between the first and second active radiators and bounded by the ground plane.

Abstract: An apparatus includes a measurement structure for performing measurements of an RF device. The measurement structure includes an aperture in a conductive surface of the RF device and a conductive projecting region projecting into the aperture from a conductive perimeter of the aperture and electrically connected to that conductive perimeter. The aperture has a similar width in all dimensions. A combined shape of the aperture and the conductive projecting region does not possess even rotational symmetry about a point where a signal conductor will be placed on the conductive projecting region in order to conduct RF energy between the measurement structure and an external measurement instrument for performing the measurements. The measurement structure may be used for performing measurements of a multimode resonator, the measurements comprising one or more of resonant frequencies and quality factors of resonant modes of the resonator.

Abstract: A first dielectric resonator component is joined to a second dielectric resonator component by bonding a first face of the first dielectric resonator component to a second face of the second dielectric resonator component. The first face has a first coupling aperture formed by removing a portion of a coating of first conductive material from the first dielectric resonator component, and the second face has a second coupling aperture formed by removing a portion of a coating of second conductive material from the second dielectric resonator component. The first coupling aperture and said second coupling aperture are aligned with one another when said first face is bonded to the second face. The first dielectric resonator component, which is slab-shaped, and the second dielectric resonator component, which is generally cubed-shaped, form a linear stack having two end faces and four side faces.

Abstract: A first dielectric resonator component is joined to a second dielectric resonator component by bonding a first face of the first dielectric resonator component to a second face of the second dielectric resonator component. The first face has a first coupling aperture formed by removing a portion of a coating of first conductive material from the first dielectric resonator component, and the second face has a second coupling aperture formed by removing a portion of a coating of second conductive material from the second dielectric resonator component. The first coupling aperture and said second coupling aperture are aligned with one another when said first face is bonded to the second face. The first dielectric resonator component, which is slab-shaped, and the second dielectric resonator component, which is generally cubed-shaped, form a linear stack having two end faces and four side faces.

Abstract: An apparatus includes a measurement structure for performing measurements of an RF device. The measurement structure includes an aperture in a conductive surface of the RF device and a conductive projecting region projecting into the aperture from a conductive perimeter of the aperture and electrically connected to that conductive perimeter. The aperture has a similar width in all dimensions. A combined shape of the aperture and the conductive projecting region does not possess even rotational symmetry about a point where a signal conductor will be placed on the conductive projecting region in order to conduct RF energy between the measurement structure and an external measurement instrument for performing the measurements. The measurement structure may be used for performing measurements of a multimode resonator, the measurements comprising one or more of resonant frequencies and quality factors of resonant modes of the resonator.

Abstract: An apparatus includes a filtenna. The filtenna includes a block having a waveguide formed therein, and having first and second ends, wherein the first end is closed and the second end radiates to free space. The filtenna also includes multiple patch elements suspended within the waveguide, ordered from a first patch element at the first end of the waveguide to a final patch element at the second end of the waveguide. The filtenna further includes one or more ports at the first end of the waveguide. Each of the one or more ports is electrically coupled to the first patch element, and is for coupling to a corresponding antenna polarization. A dual-polarized filtenna is possible, as are transmitters, receivers, base stations, and the like. An array of filtennas may be created and used, and the filtenna(s) may be used for transmission, reception, or both.

Abstract: A vertically integrated, mobile educational system for a child aged about 1 to about 12 years is presented comprising a mobile digital processing device that is optionally connected to a computer network and at least one mobile application provided to the mobile digital processing device. The one or more mobile applications include executable instructions that create a mobile interactive educational resource characterized by: providing a mobile extension of a web-based educational suite; integrating with the web-based educational suite according to an instructional plan designed to accomplish one or more specific educational objectives in a subject; and comprising one or more learning activities associated with a subject appropriate for the child. Additionally, the educational resource is substantially free of activities not teaching toward one or more educational objectives in a subject.

Abstract: Disclosed herein, in certain embodiments, are computer-based language phoneme practice systems, products, programs, and methods comprising a digital processing device and a computer program that creates a language phoneme practice engine, wherein said engine comprises: a taxonomy of phonemes of a target language; a software module for providing an interface for practicing each said phoneme in said taxonomy, wherein said interface allows a learner to optionally access a visual representation and an auditory representation of each said phoneme in said taxonomy; and a software module for providing an interface for practicing each said phoneme in the context of the beginning, middle, and end of words of said target language, wherein said interface allows a learner to optionally access a visual and an auditory representation of each said word and each said phoneme in each said word.

Abstract: Disclosed herein, in certain embodiments, are computer-based language phoneme practice systems, products, programs, and methods comprising a digital processing device and a computer program that creates a language phoneme practice engine, wherein said engine comprises: a taxonomy of phonemes of a target language; a software module for providing an interface for practicing each said phoneme in said taxonomy, wherein said interface allows a learner to optionally access a visual representation and an auditory representation of each said phoneme in said taxonomy; and a software module for providing an interface for practicing each said phoneme in the context of the beginning, middle, and end of words of said target language, wherein said interface allows a learner to optionally access a visual and an auditory representation of each said word and each said phoneme in each said word.

Abstract: Disclosed herein, in certain embodiments, are computer-based language immersion teaching systems, products, programs, and methods for learners aged about 3 to about 10 years comprising a digital processing device and a computer program that creates a language immersion teaching environment, wherein said environment comprises a plurality of learning activities associated with a target language, and wherein said plurality of activities comprises: at least one learning activity based on a taxonomy of phonemes; at least one learning activity selected from: songs, chants, books, poems, puzzles, games, art activities, and printable activities; voiceover audio in said target language; and a software module for recording said learner's pronunciation and comparing it to one or more model pronunciations.

Abstract: Computer-based educational systems, methods, and media for a child aged about 1 to about 10 years, comprising: an educational environment comprising: at least three subjects appropriate for the child, wherein each subject comprises a plurality of levels of learning; a plurality of learning activities associated with each subject; wherein the plurality of learning activities teaches toward one or more educational objectives in a subject and is substantially free of activities not teaching toward one or more educational objectives in a subject; a module for creating an avatar to represent the child; and a module for monitoring the progress of the child in each of the subjects, wherein the module for monitoring progress displays an explorable environment comprising the avatar representing the child, a learning path comprising a sequence of lessons or learning activities, and interactive elements configured to teach facts associated with the environment.

Abstract: Disclosed herein are e-learning lesson delivery platforms, products, programs, and methods comprising a digital processing device and a program that creates a lesson delivery server, wherein said server comprises: a plurality of learning activities, wherein said activities are organized according to an instructional plan designed to accomplish one or more educational objectives in at least one subject, wherein said plan identifies one or more activities for use in a guided environment and one or more activities for assignment as independent work; a module for displaying and providing access to said one or more activities in a guided environment; a module for assigning said one or more activities as independent work to one or more learners, wherein said module is only accessible by a mentor; and a module for displaying and providing access to activities assigned as independent work, wherein said module is accessible by a mentor or a learner.

Abstract: A web-based educational system comprising at least one area of skill, interest, or expertise, a plurality of activities associated with each area of skill, interest, or expertise, and at least three navigational modes, wherein the navigational modes comprise a sequenced navigational mode, a guided navigational mode, and an independent navigational mode. Optionally, the learner can switch between available navigational modes.

Abstract: Disclosed herein, in certain embodiments, are computer-based language immersion teaching systems, products, programs, and methods for learners aged about 3 to about 10 years comprising a digital processing device and a computer program that creates a language immersion teaching environment, wherein said environment comprises a plurality of learning activities associated with a target language, and wherein said plurality of activities comprises: at least one learning activity based on a taxonomy of phonemes; at least one learning activity selected from: songs, chants, books, poems, puzzles, games, art activities, and printable activities; voiceover audio in said target language; and a software module for recording said learner's pronunciation and comparing it to one or more model pronunciations.