Patents Assigned to Radio Frequency Systems, Inc.
  • Publication number: 20180191046
    Abstract: An apparatus, e.g. a cavity resonator, includes a floor and a cover. A conductive post is located between the floor and the cover and has a void oriented along a longitudinal axis of the post. A dielectric spacer is located between the cover and the post and a dielectric rod is located within the void. A resilient dielectric is located within the void between the dielectric spacer and the floor.
    Type: Application
    Filed: December 30, 2016
    Publication date: July 5, 2018
    Applicant: Radio Frequency Systems, Inc
    Inventors: Yunchi Zhang, Yin-Shing Chong, Gregory J. Lamont
  • Publication number: 20180026380
    Abstract: An apparatus, e.g. a hybrid antenna, includes a plurality of antenna arrays. Each array includes antenna elements, and each array is located on a polygonal antenna body such that each array faces a different direction. An RF network includes first and second duplexers and a divider. The first duplexer is configured to split a received multifrequency drive signal into a first component having a first frequency and a second component having a second frequency. The divider is configured to split the first component into attenuated portions, and to direct one of the attenuated portions to a first of the plurality of antenna arrays. The second duplexer is configured to combine another of the attenuated portions with the second drive signal component to form a combined drive signal component, and to direct the combined drive signal component to a second of the antenna arrays.
    Type: Application
    Filed: December 29, 2016
    Publication date: January 25, 2018
    Applicant: Radio Frequency Systems, Inc
    Inventor: Charles M. Powell
  • Publication number: 20180006368
    Abstract: A mechanical assembly provides an attachment of an antenna tower to an antenna that includes back ring attached to an antenna reflector. The assembly includes a horizontal beam and a bracket. The bracket includes a first, e.g. planar, portion and a second, e.g. planar, portion that meet at a corner. The first portion is configured to fasten to the antenna back ring and the second portion is configured to attach to the horizontal beam. The second portion includes a pivot slot for receiving a first fastener connecting the bracket to the horizontal beam, and includes a circular hole for receiving a second fastener connecting the bracket to the horizontal beam.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: Radio Frequency Systems, Inc.
    Inventor: Asaad R Elsaadani
  • Publication number: 20170250454
    Abstract: Sealing portions of an orthomode transducer or another antenna component is accomplished by forming first and second receptacles or channels in one half or portion of the transducer and inserting first and second type of compressible sealing components into the receptacles. Upon attaching additional portions of the transducer the compressible sealing components may be compressed, but the compression is limited to an amount within a compression range to maintain a seal.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 31, 2017
    Applicant: Radio Frequency Systems Inc.
    Inventors: Yin-Shing Chong, Peter Casey, Yunchi Zhang
  • Publication number: 20170229806
    Abstract: Corrosion within a flangeless connector, or at an associated connection of a device or medium (e.g., cable), used in a wireless base station may be reduced by incorporating a seating member, e.g., an O-ring, between the connector and a connector port. Conductive plating selectively applied within the connector port may provide a low-resistance ground connection between the port and the connector, while a non-conductive coating selectively applied to a surface against which the seating member is seated may form a weather-tight seal. The connection between the connector and the connector port is thereby protected from moisture, while exposed surfaces of the connector port re protected by the non-conductive coating.
    Type: Application
    Filed: April 26, 2017
    Publication date: August 10, 2017
    Applicant: Radio Frequency Systems Inc.
    Inventors: Yin-Shing Chong, Timothy Bernhardt
  • Publication number: 20170104267
    Abstract: An antenna array may include a plurality of co-planar antenna elements forming a sub-array, and at least one non-planar antenna element configured to tilt relative to a planar orientation of the sub-array to provide an air-to-ground service.
    Type: Application
    Filed: August 8, 2014
    Publication date: April 13, 2017
    Applicant: Radio Frequency Systems,Inc.
    Inventors: Charles M. Powell, Raja Reddy Katipally
  • Publication number: 20160276814
    Abstract: Conductors within a multi-conductor electrical cable can be safely and separately connected using a splitter that incorporates smooth and chamfered openings and surfaces, and at least one elongated (e.g., tubular) passageway for covering an uninsulated conductor.
    Type: Application
    Filed: March 20, 2015
    Publication date: September 22, 2016
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Robert Triggs, Nicholas A. DeLuca
  • Publication number: 20160268726
    Abstract: Corrosion within a flangeless connector, or at an associated connection of a device or medium (e.g., cable), used in a wireless base station may be reduced by incorporating a recessed portion in an outer surface of a body of the flangeless connector. The recessed portion helps retain a seating member, such as a deformable O-ring, to prevent water and other environmental material from seeping into the connector or connection. Further, inner surfaces of a port of a device that receives the flangeless connector may be covered with a conductive plating, while outer surfaces of the port may be covered with a non-conductive coating.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 15, 2016
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Yin-shing Chong, Timothy Bernhardt
  • Publication number: 20160233832
    Abstract: A dual mode regulator provides power to a tower mounted low noise amplifier (LNA) and operates in either one of two modes. The dual mode regulator comprises a microcontroller that controls the amplifier and two regulators to operate in an Antenna Interface Standards Group (AISG) mode when the microcontroller is detecting AISG protocol information or in a current window alarm (CWA) mode when the microcontroller is not receiving AISG protocol information. In the CWA mode the total current to the two regulators and associated circuitry is maintained at a constant amplitude. Further in the CWA mode, the microcontroller is able to generate an alarm signal and deactivate the amplifier when it detects improper operation by the amplifier. In the AISG mode, a single regulator is used and the other regulator is de-activated by the microcontroller.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 11, 2016
    Applicant: Radio Frequency Systems Inc.
    Inventors: Jing Wang, Gordon M. Siebert
  • Publication number: 20160226125
    Abstract: A radio-frequency (RF), base station notch filter includes an integral, conductive RF notch filter structure having one or more notch filter elements, where the notch filter elements may be circular in shape. The integral notch filter reduces insertion losses and passive intermodulation distortion.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 4, 2016
    Applicant: Radio Frequency Systems,Inc.
    Inventors: Raja Reddy Katipally, Jari Taskila
  • Publication number: 20160211565
    Abstract: Non-coaxial conductors, such as direct current power conductors, may be inserted into, or separated from, a central section of a radio frequency (RF) coaxial conductor that is supplying RF signals.
    Type: Application
    Filed: September 29, 2014
    Publication date: July 21, 2016
    Applicant: RADIO FREQUENCY SYSTEMS, INC.
    Inventor: Teppo M. Lukkarila
  • Publication number: 20160049711
    Abstract: A cavity filter includes a threaded resonator and a threaded filter body to improve the coupling of radio frequency signals.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 18, 2016
    Applicant: RADIO FREQUENCY SYSTEMS, INC.
    Inventors: Yin-Shing Chong, Peter A. Casey, Yunchi Zhang
  • Publication number: 20150250068
    Abstract: Band rejection filters are protected from the adverse effects of external forces such as stresses, strains and vibrations from external loads and winds by utilizing a protective frame and dampers.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 3, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Yin-Shing Chong, Yunchi Zhang, Stanley Michnowicz
  • Publication number: 20150207194
    Abstract: Difficulties in grounding a non-integral, deep drawn resonator (DDR) to the filter body of a cavity may be substantially eliminated by preventing the movement of the DDR away from a grounding contact area on the filter body. The addition of a compression plate and stop limiter in the connection of the non-integral DR to the filter body helps insure that any such movement is eliminated or substantially reduced.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 23, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Yin-Shing Chong, Yunchi Zhang, Peter A. Casey
  • Publication number: 20150126135
    Abstract: Antenna array calibration systems and related methods include or utilize a plurality of signal splitter/combiner networks. Each of the signal splitter/combiner networks has a calibration signal sampling point in electrical communication with a signal input point, and signal output points. Each calibration signal sampling point may be capacitively coupled to a respective calibration source input of a calibration network. The signal splitter/combiner networks may be formed as phase-shifting networks.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Raja Reddy Katipally, Jari Taskila, Aaron Rose
  • Publication number: 20150116177
    Abstract: An omni-directional antenna module includes a plurality of vertically and horizontally polarized antenna elements arranged to provide 360° coverage around an antenna, and to eliminate nulls below the antenna. The antenna elements are arranged in parallel with respective orthogonal axes of a three-dimensional Cartesian coordinate system, with the centers of the antenna elements being arranged collinearly along the vertical or “Z” axis so that the radiation patterns of the individual orthogonally polarized dipoles do not interfere.
    Type: Application
    Filed: October 29, 2013
    Publication date: April 30, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Charles M. POwell, Warren F. Hunt
  • Publication number: 20150028968
    Abstract: Multiple phase shifting elements which include electrically conductive, slidable tuning members may be placed on a single circuit board. The elements may be used to adjust the phase of signals propagating through a multi-element antenna array.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Raja Katipally, Jari Taskila
  • Publication number: 20150021068
    Abstract: Multi-conductor cables for telecommunication systems are disclosed. One multi-conductor cable may include a plurality of fiber-optic conductors and/or power conductors extending within an outer jacket in a main body portion of the cable, and extending outside of the outer jacket in a break-out portion of the cable. A break-out boot may be attached to the outer jacket and may surround the conductors in a break-out portion of the cable. Potting material may be provided in the break-out boot within spaces between adjacent conductors to provide innovative sealing of the break-out portion.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 22, 2015
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Timothy Bernhardt, Yin-Shing Chong
  • Publication number: 20140375518
    Abstract: Switched beam antenna systems are disclosed. The disclosed antenna systems include an antenna having multiple, co-linear arrays of electromagnetic radiating elements and a Butler Matrix feed network that feeds the antenna. Each of the arrays of electromagnetic radiating elements includes an identical number of radiating elements. At least one antenna port of the Butler Matrix feed network is connected to a power divider/combiner to split the signal strength at the at least one antenna port such that signal power is distributed unequally among the arrays of electromagnetic radiating elements. Power is distributed among the arrays in a manner that provides an improved balance of side lobe suppression and overall antenna gain.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 25, 2014
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Charles M. Powell, Raja Reddy Katipally
  • Publication number: 20140354375
    Abstract: Orthomode transducers (OMTs) and methods of fabricating OMTs are disclosed. According to disclosed embodiments, an OMT includes a housing defining an internal waveguide. The housing may be composed of a first cast housing member attached to a second cast housing member. The first housing member may include a first side of the waveguide that is cast into the first housing member. The second housing member may include a second side of the waveguide that is cast into the second housing member. A method of fabricating an OMT may include arranging at least one casting insert in at least one mold, casting the housing in the mold and casting a waveguide in the housing using the at least one casting insert. The disclosed devices and methods provide cost effective solutions for fabricating OMTs of various operating frequencies that share a substantially similar outer housing shape and size.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 4, 2014
    Applicant: Radio Frequency Systems, Inc.
    Inventors: Yin-Shing Chong, Peter Casey, Yunchi Zhang