公开(公告)号：US20250141117A1

公开(公告)日：2025-05-01

申请号：US18443708

申请日：2024-02-16

Applicant: Lockheed Martin Corporation

Inventor： Frank Lucchesi ,  Timothy Patrick Wink ,  Nathan Jastram

IPC: H01Q21/06 ,  H01Q21/00

Abstract: Provided herein are various enhancements for aperture antenna arrays and electronically steered arrays (ESAs). A modular subarray is provided that includes horn apertures coupled to corresponding waveguide polarizers coupled to transmit waveguide filters and receive waveguide filters that establish transmit ports and receive ports. The transmit ports and the receive ports are coupled through a waveguide adapter plate to individual isolation cavities each formed in a body of an amplifier-filter module that houses amplifier/filter elements and couple transmit radio frequency signaling and receive radio frequency signaling to coaxial connections penetrating the isolation cavities. The subarray also includes a circuit card assembly comprising the coaxial connections coupled to stripline links formed by a printed circuit board, wherein the stripline links couple to beamforming circuitry, and a high-density digital connector mounted to the circuit card assembly and configured to carry input/output radio frequency signaling for the subarray to/from the beamforming circuitry.

公开(公告)号：US11777227B1

公开(公告)日：2023-10-03

申请号：US17685508

申请日：2022-03-03

Applicant: Lockheed Martin Corporation

Inventor： Timothy Patrick Wink ,  Nathan Jastram ,  Matthew David Arendall

IPC: H01Q21/00 ,  H01Q21/06

CPC classification number: H01Q21/064 ,  H01Q21/0025

Abstract: Enhanced components and assemblies for microwave radio frequency (RF) antenna feed systems are provided. One example includes radiating probes that propagate RF signals to intermediate waveguides that feed polarizers or filters associated with horn antenna elements. The radiating probes can couple to corresponding transmit/receive circuitry using coaxial link elements. The radiating probes comprise tunable components which can be shaped/sized to produce desired output characteristics (e.g., frequency ranges and gain properties). Many radiating probes can be integrated into a cover plate assembly that feeds an array of horn antennas. Interface elements with integrated waveguides can provide RF sealing between radiating probes and provide radiative coupling from radiating probes to corresponding waveguides that feed the array of horn antennas.