JEM Engineering is a world class supplier of antenna and antenna systems for military and commercial applications.


We offer a variety of existing, production-ready, novel antenna products, which can be quickly tailored to meet your specific needs.


On the cutting edge of antenna and RF technologies, we strive to improve and develop new technology and methodologies.


We house multiple RF test chambers. Our testing capabilities not only facilitate the design process, but also validate your product.



Concealed Antennas


We specialize in low-profile, ultra-wideband receive antennas with mounting capability on stationary locations, or on vehicles. 


Our extensive product line includes antennas covering the frequency spectrum from 2 MHz to 40 GHz, including a number of HF, UHF, and VHF antennas designed specifically for airborne platforms.

Flight Qualified Antenna

vehicle mounted hero antenna - JEM Engineering


Our extremely rugged and durable vehicle-mounted antennas are specifically designed for multi-use operations.


For the past 15 years, we have designed and built a wide range of products for signal intelligence (SIGINT) and Intelligence Surveillance Reconnaissance (ISR), and electronic intelligance (ELINT) antenna applications.

Monitoring Antenna

Portable Antenna


Our high-power handheld antennas are designed for wideband communications and deliver class-leading gain and pattern.


We offer both low- and high-power broadband antennas, all ruggedized for all weather conditions.

Outdoor Hero Antenna


Custom Design & Development

We offer in-house rapid prototyping and testing services from a tapered antenna test facility (TATF) chamber to a spherical near-to-far-field (SNF) chamber. Our capabilities not only facilitate the design process, but also allow us to validate your product. Our design expertise include:

Broadband Antennas

Narrowband Antennas

Antenna Arrays

Genetic Antennas

Electronically Steerable Beamformers

Fixed Beamformers



How can we help? We are dedicated to being your antenna design and testing resource. If you have any questions, feel free to call us at (301) 317-1070. Our experts will be happy to assist.

Rapid RF Testing Services


JEM houses multiple RF test chambers at our facility in Laurel, MD, within easy reach of both Baltimore and Washington DC.

We understand the challenges facing antenna, microwave and communication system engineers. Also, we realize that accurate measurement of antenna electrical performance is critical.

Our customers have the advantage of working with our knowledgeable and experienced RF technicians and engineers, who provide guidance and support to the testing experience, as well as assist with data analysis and interpretation.

  • Testing Services from 100 MHz to 40MHz
  • Near- and Far-Field Testing
  • Experienced On-Staff Test Engineers
  • Technical Guidance on Configuration, Data Interpretation, and Troubleshooting
  • Fastest Test Chamber Currently Available
  • Full-Sphere Data Collection




The HSA-218

JEM Engineering is proud to announce the release of our newest addition to our vast product line: the HSA-218 Spiral Antenna (above). Ideally suited for airborne and vehicular applications, this antenna delivers wide bandwidth, broad beamwidth, and high RF efficiency in a relatively small package.

Learn more…



May 11, 2018: An Overview of Unmanned Aerial Vehicles — and their Antennas

An unmanned aerial vehicles, or UAV, refer to a vehicle that is able to fly remotely, either with some sort of controller or autonomously. An unmanned aircraft system, or UAS, includes not only the UAV, itself but also the person on the ground controlling the flight, as well as the system in place that connects the two of them. 

Over the past 15 years, JEM Engineering has developed a variety of UAV-qualified antennas. We offer a selection of aerodynamic antennas in various form factors and frequency ranges. Our versatile antennas can be used in ground‐to-ground, ground‐to‐air, and air‐to‐ground communications systems. Our product applications include signal intelligence (SIGINT); intelligence, surveillance, and reconnaissance (ISR); and sensor systems.

Read more…


March 21, 2018: JEM Engineering CEO Nancy Lilly Awarded Governor’s Citation

Nancy Lilly, President & CEO of JEM Engineering was recognized by Governor Larry Hogan for her “contribution to Maryland’s economy as a result of [her] hard work, dedication and commitment in pursuit of excellence and success for [her] business.”