Specializing in the development of unique antennas, JEM’s antenna design experience includes:

Broadband Antennas

Antennas that operate over a wide band of frequencies (generally greater than one octave) such as spirals, log-periodic dipoles and Vivaldi notch elements.

Both your expertise and dedication as well as the tremendous amount of assistance provided on the antenna design and characterization work for the RadarGolf System was invaluable. As you know, this was a first-ever product and many thought it could not be done but thanks to the JEM team the RadarGolf System is a success!”
Steven L. Harari, CEO, RadarGolf, Inc.

Narrowband Antennas

Antennas that operate over relatively narrow bandwidths (generally much less than one octave) including patch and resonant cavity antennas.

Genetic Antennas


Antennas designed entirely by an optimization algorithm, which can be a genetic algorithm or some other iterative method, having no input to their theory of operation by a human engineer. Genetic antennas are not existing designs modified by optimization but rather are new antennas designed by a computer.

Array Antennas & Beamformers

Array antennas consist of multiple radiating elements. In some cases these elements are fed by a corporate power divider or beamformer. The simplest beamformer is a power division network, which yields a fixed radiation beam. If the beamformer incorporates controllable phase or delay elements, a steerable beam array or “phased array” results.

Housings, Assemblies, and Structural Components

Mechanical components created to support electrical designs, and can range from simple enclosures to protective covers to mounting hardware to moving mechanical structures. These features enable ease of deployment, mounting, or ergonomic handheld usage. For more information on our Mechanical Design capabilities, click here.

One of JEM’s most valuable and unique features is the fact that we offer both in-house rapid prototyping and testing services using a tapered anechoic far-field chamber (50 MHz to 40 GHz) to a spherical near to far-field chamber (400 MHz and 6 GHz). Having these testing capabilities not only facilitates the design process but also validates your product.

Our Facilities

JEM’s mission to provide quality antennas and services to its customers requires the right tools and equipment. JEM employs a variety of high-tech tools to support that mission including:

  • 20 GHz and 40 GHz Vector Network Analyzers w/ time domain
  • 2 Advantest 3.8 GHz Vector Network Analyzers
  • Synthesized Signal Generator
  • Data Acquisition Unit
  • Microwave Amplifiers
  • Calibration & Gain Standard Antennas (numerous models)
  • 3 Rapid Prototyping Printed Circuit Board Mills
  • Anechoic Far-Field Tapered Test Chamber including:
    • Azimuth, Roll & Polarization Positioners
    • National Instruments Motor Controller & Drive
    • Calibration Standard Antennas
    • National Instruments LabVIEW Control Software
  • Spherical Near-Field Test Chamber including:
    • Probe Array Controller
    • Rohde & Schwarz 6 GHz Synthesized Signal Generators
    • RF Receiver & Test Unit
    • Active Measurement Test Unit
    • Rohde & Schwarz CMU 200 Communication Test Unit (Base Station/Simulator)
  • Model Shop including the variety of machine tools needed to make prototype antennas