Abstract: A waveguide assembly system includes a fixed port, a sliding port, and a transmission path from the fixed port to the sliding port. The transmission path includes a waveguide assembly that includes a first minor face corresponding to the fixed port, a first major face that includes a recess extending from the first minor surface towards the fixed port. The waveguide assembly system also includes a port assembly with a first major surface disposed opposite to the first major surface of the waveguide assembly. The port assembly includes at least one port having a first opening on the first major surface of the port assembly and a second opening on a second major surface of the port assembly. The port assembly includes one or more stubs positioned to impede electromagnetic energy propagation beyond a specified distance within the port tab assembly.

Abstract: Systems and apparatus for electromagnetic communications are provided. One of the apparatuses include a communication module, the communication module including: a printed circuit board; a plurality of integrated circuit packages, each integrated circuit package including at least one transmitter, receiver, or transceiver; a plurality of signal guiding structures, each signal guiding structure being associated with a corresponding integrated circuit package of the plurality of integrated circuit packages; and one or more signal blocking structures positioned between one or more pairs of integrated circuit packages.

Abstract: Conduit structures for guiding extremely high frequency (EHF) signals are disclosed herein. The conduit structures can include EHF containment channels that define EHF signal pathways through which EHF signal energy is directed. The conduit structures can minimize or eliminate crosstalk among adjacent paths within a device and across devices.

Abstract: Contactless extremely high frequency (EHF) signal directing and blocking structures are disclosed herein. The EHF signal directing structures may focus EHF signal energy along a desired EHF signal pathway. The EHF signal blocking structures may minimize signal propagation through substrates such as circuit boards. Focusing EHF signal energy and selectively blocking the EHF signal energy can minimize or eliminate crosstalk and enhance data transmission speed and integrity.

Abstract: Contactless extremely high frequency (EHF) signal directing and blocking structures are disclosed herein. The EHF signal directing structures may focus EHF signal energy along a desired EHF signal pathway. The EHF signal blocking structures may minimize signal propagation through substrates such as circuit boards. Focusing EHF signal energy and selectively blocking the EHF signal energy can minimize or eliminate crosstalk and enhance data transmission speed and integrity.

Abstract: A waveguide assembly system includes a fixed port, a sliding port, and a transmission path from the fixed port to the sliding port. The transmission path includes a waveguide assembly that includes a first minor face corresponding to the fixed port, a first major face that includes a recess extending from the first minor surface towards the fixed port. The waveguide assembly system also includes a port assembly with a first major surface disposed opposite to the first major surface of the waveguide assembly. The port assembly includes at least one port having a first opening on the first major surface of the port assembly and a second opening on a second major surface of the port assembly. The port assembly includes one or more stubs positioned to impede electromagnetic energy propagation beyond a specified distance within the port tab assembly.

Abstract: A waveguide assembly system includes a fixed port, a sliding port, and a transmission path from the fixed port to the sliding port. The transmission path includes a waveguide assembly that includes a first minor face corresponding to the fixed port, a first major face that includes a recess extending from the first minor surface towards the fixed port. The waveguide assembly system also includes a port assembly with a first major surface disposed opposite to the first major surface of the waveguide assembly. The port assembly includes at least one port having a first opening on the first major surface of the port assembly and a second opening on a second major surface of the port assembly. The port assembly includes one or more stubs positioned to impede electromagnetic energy propagation beyond a specified distance within the port tab assembly.

Abstract: A waveguide assembly system includes a fixed port, a sliding port, and a transmission path from the fixed port to the sliding port. The transmission path includes a waveguide assembly that includes a first minor face corresponding to the fixed port, a first major face that includes a recess extending from the first minor surface towards the fixed port. The waveguide assembly system also includes a port assembly with a first major surface disposed opposite to the first major surface of the waveguide assembly. The port assembly includes at least one port having a first opening on the first major surface of the port assembly and a second opening on a second major surface of the port assembly. The port assembly includes one or more stubs positioned to impede electromagnetic energy propagation beyond a specified distance within the port tab assembly.

Abstract: Contactless extremely high frequency (EHF) signal directing and blocking structures are disclosed herein. The EHF signal directing structures may focus EHF signal energy along a desired EHF signal pathway. The EHF signal blocking structures may minimize signal propagation through substrates such as circuit boards. Focusing EHF signal energy and selectively blocking the EHF signal energy can minimize or eliminate crosstalk and enhance data transmission speed and integrity.

Abstract: A circuit board, for use with a high speed backplane, includes transmitter and receiver with circuitry for correcting for multipath signal errors. A training sequence that is often a pseudo-random signal is transmitted by the transmitter on a first circuit board to a receiver located on a second circuit board. The receiver on the second circuit board includes an analog-to-digital signal converter, an equalizer, and a binary digital-to-analog reconverter for receiving the training sequence. The equalizer preferably comprises a series of connected registers having taps in between, a plurality of individual weighting means attached to each of the taps, and a summing means connected to the weighting means. A training sequence is transmitted from the first circuit board to the receiver on the second circuit board, enabling the receiver to adaptively determine a set of weighting means coefficients for correcting the multipath errors in subsequent signals.

Abstract: The present invention provides for an inexpensive RFID Tag design which uses an inexpensive Backscatter Modulator. The modulator is simply a CMOS gate driven by a shift register containing a modulating signal. The CMOS gate is connected to the antenna such that it modulates the reflectivity of the antenna in accordance with the modulating signal. In a second embodiment, the Tag is incorporated into a single CMOS integrated circuit which comprises all of the components, except for the antenna, necessary to implement an inexpensive read-only RFID Tag.

Abstract: In accordance with the present invention, a general antenna system is disclosed suitable for applications in which an RFID Tag passes by an Interrogator. We then disclose a specific antenna design that uses a single planar antenna for transmit and a multi-element planar antenna array for receive. The multi-element planar antenna array is spaced such that each of the planar elements is four inches apart, center-to-center, thus defining a narrow 30° receive beamwidth in the horizontal plane. The vertical receive bandwidth is much greater than 30°, facilitating the Interrogator receiving signals at a variety of elevations. Furthermore, a multi-way microstrip combiner is used to sum the signals received from each of the planar antennas. To block interference from the transmit antenna and to improve receive sensitivity, this multi-way microstrip combiner is shielded using, in one embodiment, copper tape along its edges. In a specific embodiment, a four element receive antenna design is disclosed.