OceanSound Partners Acquires Antenna Research Associates

Antenna Research Associates and Empower RF Systems Announce Merger to Build Integrated RF Platform

October 8, 2026

Aerospace & Defense

Antenna Research Associates (ARA), an OceanSound Partners portfolio company, announced a merger with Empower RF Systems (Empower RF) to create an integrated radio frequency (RF) and advanced communications platform for aerospace and defense missions. The combination pairs ARA’s antenna and aperture expertise with Empower RF’s high-power solid-state RF and microwave amplifier technology to deliver end-to-end RF solutions for contested-spectrum applications.

Artemis Capital Partners Acquires Diamond Antenna and Microwave Corporation

November 14, 2024

Aerospace & Defense

Boston-based private equity firm Artemis Capital Partners has acquired Diamond Antenna and Microwave Corporation, a Littleton, Massachusetts developer and manufacturer of high-reliability RF rotary joints and rotating subsystems for aerospace, defense and space applications. Artemis says Diamond will continue to operate independently from its Littleton facilities and that the firm plans to invest in technical capabilities to deepen Diamond's offerings to prime integrators and government customers.

ARKA Group Acquires Maxar's Radar and Sensor Technology (RST) Group

November 1, 2024

Aerospace & Defense

ARKA Group, L.P. has completed the acquisition of Maxar’s Radar and Sensor Technology (RST) group, a Ypsilanti, Michigan–based radar and sensor engineering team that supports U.S. government synthetic aperture radar (SAR) programs. The acquisition adds radar, moving-target indication and full‑spectrum geospatial intelligence capabilities to ARKA’s existing space hardware and software offerings, strengthening its mission-focused solutions for U.S. and allied defense customers.

Ondas Holdings (American Robotics) Acquires Ardenna

March 21, 2022

AI & Machine Learning

Ondas Holdings, through its subsidiary American Robotics, entered into a definitive agreement to acquire Ardenna, a provider of image-processing and machine-learning software for rail infrastructure inspections. The deal will integrate Ardenna's Rail-Inspector analytics into American Robotics' Scout autonomous drone platform to deliver end-to-end monitoring and inspection solutions for the rail industry; Ardenna is a wholly-owned subsidiary of Bihrle Applied Research Inc., and the acquisition was expected to close in Q2 2022.

OceanSound Partners Makes Strategic Investment in RMA Group of Companies

September 28, 2021

Environmental Services

An affiliate of OceanSound Partners has made a strategic (minority) investment in RMA Group of Companies, a California-based provider of technology-enabled laboratory testing, inspection, and quality management services. RMA's existing management team, led by President and CEO Ed Lyon, retains a significant ownership stake and will continue to lead the business as the partner supports organic growth and add-on acquisitions to expand capabilities and geographic reach.

Applied Research Associates Acquires Neya Systems LLC

May 3, 2017

Aerospace & Defense

Applied Research Associates, Inc. (ARA) has acquired Neya Systems LLC, a developer of unmanned ground systems autonomy and perception technologies. The acquisition combines Neya's expertise in autonomy and computer vision with ARA's experience in robotics hardware and systems to expand ARA's unmanned and robotic systems capabilities for defense, homeland security, and commercial markets; terms were not disclosed.