摘要:
An antenna array core comprising a plurality of microwave modules, a control layer, a mounting layer, and a signal distribution layer. The control layer is capable of distributing control signals to the plurality of microwave modules. The plurality of microwave modules are attached to an upper surface of the mounting layer and the mounting layer is made from a heat conductive material capable of cooling the plurality of microwave modules. The signal distribution layer is located below the mounting layer, wherein the signal distribution layer is capable of transmitting microwave signals to the plurality of microwave modules and wherein the arrangement of the plurality of microwave modules on the mounting layer, the control layer, and the wave distribution network form a layered architecture for the antenna core. The architecture is a balance between, size, thermal control, manufacturability, cost, and performance so as to be a unique solution.
摘要:
A ballistic resistant antenna for use with a ballistic resistant communications system having a first plate fabricated from a ballistic material. The first plate has at least one opening configured to allow transmission of electromagnetic energy at a predetermined range of electromagnetic wavelengths. The antenna also has at least one plug having a geometry that is capable of insertion into the at least one opening. The at least one plug is made up of a material that is substantially transparent to the predetermined range of electromagnetic wavelengths.
摘要:
A phased array antenna system having a corporate waveguide distribution network stripline printed circuit board. The stripline printed circuit board receives electromagnetic (EM) wave energy from a 1×4 waveguide distribution network input plate and distributes the EM wave energy to 524 radiating elements. The stripline circuit board enables extremely tight spacing of independent antenna radiating elements that would not be possible with a rectangular air filled waveguide. The antenna system enables operation at millimeter wave frequencies, and particularly at 44 GHz, and without requiring the use of a plurality of look-up tables for various phase and amplitude delays, that would otherwise be required with a rectangular, air-filled waveguide distribution structure. The antenna system can be used at millimeter wave frequencies, and in connection with the MILSTAR communications protocol, without the requirement of knowing, in advance, the next beam hopping frequency employed by the MILSTAR protocol.
摘要:
An antenna aperture for mounting on the outside mast structure of a submarine is disclosed. The antenna aperture is designed to withstand hydrostatic pressure cycles as would be experienced by a submarine. The antenna is constructed of a highly corrosion resistant housing upon which a wide angle impedance (WAIM) cover designed to meet antenna RF requirements is integrated.
摘要:
Structure and method for an aperture plate for use in a phased array antenna is disclosed. The aperture plate includes a plurality of waveguide transitions, each with a radiating end, a coupling end and a body portion extending from the radiating end to the coupling end. The waveguide transitions are spaced apart from each other wherein at least a pair of waveguide transitions are spaced apart closer to each other at the radiating end than at the coupling end. The method of manufacturing an aperture plate for a phased array antenna includes sizing a plurality of waveguide transitions based upon certain operating requirements, determining a radiating lattice spacing and configuration based upon the operating requirements, determining a coupling lattice spacing and configuration based upon antenna electronics packaging, optimizing an aperture plate thickness to achieve the radiating lattice and the coupling lattice spacing and configuration, and forming the aperture plate.
摘要:
A phased array antenna system including a mandrel having compliant portions and an internally formed cooling passageway. The compliant portions are formed by removing portions of material along one end of the mandrel to form a plurality of pairs of generally U-shaped, leaf spring-like connecting areas. The connecting areas allow a degree of movement of a lower portion of the mandrel relative to the remainder of the mandrel, when the mandrel is fixedly secured to a printed wiring board (PWB). This enables flexible electrical interconnects, positioned over the compliant portions, to make electrical contact with circuit traces on the PWB, even if the PWB has a curved or undulating surface.
摘要:
A method and apparatus is disclosed that is capable of verifying on site the health, calibration and integrity of individual phased array modules of a phased array antenna system and, in certain cases, enabling the phased array antenna system to overcome element failures by use of a beam-steering computer. The present disclosure provides a test probe or RF radiator in or adjacent the antenna array for supplying and receiving test and calibration signals.
摘要:
A system and method of constructing a phased array antenna system that incorporates a printed wiring board assembly with a metallic waveguide plate is provided. The system uses a metallic waveguide plate to dissipate heat toward and through the waveguide portion of the system.
摘要:
A method and apparatus is disclosed that is capable of verifying on site the health, calibration and integrity of individual phased array modules of a phased array antenna system and, in certain cases, enabling the phased array antenna system to overcome element failures by use of a beam-steering computer. The present disclosure provides a test probe or RF radiator in or adjacent the antenna array for supplying and receiving test and calibration signals.
摘要:
Structure and method for an aperture plate for use in a phased array antenna is disclosed. The aperture plate includes a plurality of waveguide transitions, each with a radiating end, a coupling end and a body portion extending from the radiating end to the coupling end. The waveguide transitions are spaced apart from each other wherein at least a pair of waveguide transitions are spaced apart closer to each other at the radiating end than at the coupling end. The method of manufacturing an aperture plate for a phased array antenna includes sizing a plurality of waveguide transitions based upon certain operating requirements, determining a radiating lattice spacing and configuration based upon the operating requirements, determining a coupling lattice spacing and configuration based upon antenna electronics packaging, optimizing an aperture plate thickness to achieve the radiating lattice and the coupling lattice spacing and configuration, and forming the aperture plate.