Radio Frequency Simulation Systems, Inc. | Date: 2014-08-08
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.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 748.66K | Year: 2014
As EW needs to be smaller, lower power, and higher performance, there is a strong push by the US Government to create new technologies to achieve the ever changing goals of our future warfighters in the EW battlespace. With clocking speeds of digital devices encroaching tens, if not hundreds of gigahertz, the opportunity to create a Digital Radio Frequency Memory (DRFM) exclusively from these components is upon us and the benefits of higher performance, wider operational bandwidths, lower cost and extremely high reliability are the additional anticipated benefits of this US Navy SBIR topic. As Radio Frequency Simulation Systems (RFSS) matures and begins fielding this technology through the support of the USN at Pt. Mugu, the need for expensive and bulky wideband RF converters and their associated agile frequency schemes will fade away. RFSS, the winner of the Phase I topic and selected for the Phase II program, is a subject matter expert and supplier of DRFMs and DRFM based systems including jammers and radar test equipment. The innovative approach developed by RFSS will be discussed against the backdrop of currently fielded technology showing the benefits of the Direct to Digital DRFM approach for the US Government and EW industry.
Radio Frequency Simulation Systems, Inc. | Date: 2014-01-17
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.
Radio Frequency Simulation Systems, Inc. | Date: 2014-02-28
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.
Radio Frequency Simulation Systems, Inc. | Date: 2015-03-12
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.
Radio Frequency Simulation Systems, Inc. | Date: 2014-08-13
A cavity filter includes a threaded resonator and a threaded filter body to improve the coupling of radio frequency signals.
Radio Frequency Simulation Systems, Inc. | Date: 2014-09-29
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.
Radio Frequency Simulation Systems, Inc. | Date: 2015-03-20
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.
Radio Frequency Simulation Systems, Inc. | Date: 2015-01-29
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.
Radio Frequency Simulation Systems, Inc. | Date: 2014-06-17
The apparatus includes a base having a hole in a top surface, a fastener having a longitudinal section with the longitudinal section extending into the hole, and a shell. The shell has a connecting section connecting a first lateral surface section and a second lateral surface section. At least a portion of the first lateral surface section extends into the hole. The second lateral surface section extends away from the top surface of the base. The connecting section is disposed between the top surface of the base and a portion of the fastener. The connecting section has a first section and a second section, and the first section has a non-linear cross-section. The apparatus further includes a washer disposed between the portion of the fastener and the connecting section, and a portion of the washer engages the first section of the connecting section.