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Here, we post articles related to antenna technology. There's always something new to learn!
Part I: Introduction to Signal Monitoring
9.2023
In this issue, we will deepen our understanding of one of the fundamental components of SIGINT: signal monitoring.
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How do Seasonal Changes Affect Antenna Performance?
1.2023
Winter is officially in season! With its onset comes harsher weather conditions and colder temperatures. In this post, we explore how the changing seasons affect antenna performance.
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The Outlook on Flat Panel Antennas
7.2022
As the name suggests, a flat panel antenna, or FPA, is a simple directional antenna that is low-profile.
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5G and Beyond
6.2022
In this post, we briefly introduce 5G and contextualize the technology’s potential in the defense sector.
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SIGINT, ELINT & COMINT
11.2021
In this post, we explain the key distinctions between SIGINT, COMINT, and ELINT.
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Antennas for Maritime Applications
10.2021
In this post, we will answer some of the most common questions regarding marine antennas.
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Narrowband Vs. Wideband
9.2021
In this post, we will be making some general comparisons between narrowband and wideband communications.
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Fractal Antennas, Explained
3.2021
Fractal antennas, as the name suggests, are based on the concept of a fractal, which is a recursively generated geometry that has fractional dimensions. While fractals antennas have many complexities that can be discussed at length, in this post, we will examine the basics of fractal antennas.
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What is a Smart Antenna?
2.2021
The textbook definition of a smart antenna is “an antenna array with digital signal processing algorithms, which identify spatial signatures.” Using these spatial signatures, the smart antenna calculates beamforming vectors, which are then used to track and locate the antenna beam on a mobile or target. Read more →
Intro to Antenna Polarization
10.2020
The polarization of an antenna is loosely defined as the direction of the electromagnetic fields produced by the antenna as energy radiates away from it. Read more →
Microstrip Antennas: The Basics
9.2020
In a previous post, we introduced microstrip antennas. In this post, we explore their basic characteristics, benefits, and drawbacks.
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Design Overview: Loop Antennas
4.2020
Loop antennas come in many forms, but their overarching distinction is that they are relatively simply constructed, yet very versatile. Read more →
Antenna Development & Environmental Testing
2.2020
Antenna environmental testing is a crucial part of its qualification. Depending on which application(s) an antenna is to be used for, the environmental qualification standards for which it has to pass will vary.
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Antennas: A History
8.2019
In honor of our seventeenth anniversary, we invite you to take a look at some major research developments and trends in antenna history over the past century.
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Honoring Black Engineers
2.2019
JEM Engineeringis a minority owned company and in honor of Black History Month we would like to shine light on two Black engineers who have made an impact in the world of engineering.
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An Introduction to RF Testing
3.2018
RF testing is used to measure a variety of different antenna attributes. In this post, we discus a few ways in which rf testing can help determine if your device is performing the way it should.
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Antenna 101: Types and Applications
2.2018
In this article, we take a look at some of the different antenna types, and what applications they can be used for.
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Blade Antennas & Their Advantages
7.2023
In a previous post, we introduced blade antennas in relation to flight qualified antennas. In this post, we elaborate on what blade antennas are, as well as their advantages.
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Honoring African Americans in STEM
2.2023
February 1 marks the beginning of Black History Month. Every February, we take an opportunity to spotlight the historical contributions made by African Americans in STEM. This year, we celebrate Dr. George Robert Carruthers and Annie Easely.
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The Role of Antennas in ISR
11.2022
In this post, we briefly discuss the basics of intelligence, surveillance, and reconnaissance (ISR).
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What is Signal Conditioning?
8.2022
In this post, we introduce the concept of signal conditioning, as well as give examples of different types of signal conditioners.
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Scaling Unmanned Operations for Defense
4.2022
In this post, we explore some of the opportunities and challenges facing unmanned operations in the defense sector.
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Explaining VSWR
12.2021
In this post, we explore VSWR in further detail, as a general concept and as it relates to validating antennas.
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Dipoles: The Simplest, Most Common Antenna
8.2021
As it’s name suggests, in its basic form, a dipole antenna consists of two conductive elements, unlike a monopole antenna, which has one.
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AESAs: Active Electronically Steered Array
5.2021
Primarily used in radar systems, an AESA is a type of computer-controlled phased array antenna in which the beam of radio waves can be electronically steered in different directions without physically moving the antenna.
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Black History Month 2021
2.2021
As a minority-owned business, JEM Engineering proudly celebrates Black History Month.
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Radiofrequency Test Fixtures
11.2020
Dielectric (non-conductive) materials, such as foam and wood, for example, are ideal for test fixturing.
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Frequency Bands & Applications
8.2020
The textbook definition of a frequency band is an interval in the frequency domain, delimited by a lower frequency and upper frequency.
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Remote Radiofrequency Testing
5.2020
JEM Engineering offers all of our customers the added convenience of performing remote radiofrequency testing.
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What is Beamforming?
1.2020
Antenna environmental testing is a crucial part of its qualification. Depending on which application(s) an antenna is to be used for, the environmental qualification standards for which it has to pass will vary.
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An Introduction to Jammers
9.2019
While “interference” generally describes unintentional forms of disruption during wireless communications, “jamming” describes the deliberate interference with or blocking of such communications.
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Which Testing Chamber? TATF vs. SNF
1.2019
While our experts can easily determine which chamber is suitable for a particular test, it’s also helpful to know what each chamber’s capabilities are.
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An Overview of Unmanned Aerial Vehicles — and their Antennas
5.2018
An unmanned aerial vehicle, or UAV, refers to a vehicle that is able to fly remotely, either with some sort of controller or autonomously.
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STEM Day 2017
11.2017
In celebration of STEM Day (November 8) we asked our CEO, Nancy Lilly, and our Director of Antenna Development, Victor Sanchez, why they decided to pursue a career in STEM, and this is what they said…
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Are Your Antennas Up to the Test?
9.2017
Like with most products, an antenna’s outstanding performance in the field must be preceded by outstanding performance in the lab.
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Industry Spotlight: Concealed Antennas
5.2023
In this blog post, we will explore what concealed antennas are, how they work, and some of their benefits.
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Introduction to Radar Antennas
3.2023
In this post, we will briefly explain how radar systems work, as well as introduce the most common types of radar antenna.
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Introduction to RF Filters
10.2022
A radiofrequency filter is a component that improves the performance of an antenna by allowing it to be more precise with which signals it receives. In this post, we briefly introduce RF filtering, as well as describe four different kinds of RF filters.
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Improving Antenna Performance with RF Over Fiber
9.2022
In this post, we introduce another technology that we expect to see more of as the industry continues to favor versatile, low-maintenance, and cost-effective solutions: RF over fiber.
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Black History Month: NASA's Hidden Figures
2.2022
This year, we celebrate Dorothy Vaughan, Katherine Johnson, Mary Jackson, and Christine Darden, NASA’s Hidden Figures.
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Corona & Multipaction Effects on Space Based Antennas
1.2022
In this post, we will be discussing two types of effects that are potentially damaging to RF components: corona discharge and multipaction effects.
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Anatomy of a Vivaldi Antenna
7.2021
The Vivaldi antenna, also known as a tapered slot antenna (TSA), is a type of linear-polarized planar antenna invented by Peter Gibson in 1978, who originally called it the Vivaldi Aerial.
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Introduction to the Biconical Antenna
6.2021
The phrase “biconical antenna” describes a broadband antennas that are made up of two roughly conical conductive objects.
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Advancements in Aerospace Antenna Design
1.2021
With the latest advancements brought upon by more research and development, aerospace antenna design has continued to steer away from traditional manufacturing materials and methods.
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Large Bandwidths in Small Packages: Spiral Antennas
12.2020
Spiral antennas are a type of frequency independent antenna first introduced in the 1950s.
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What is a Smart Antenna?
7.2020
First appearing in the 1990s, genetic antennas, also known as “evolved antennas,” resemble intricately bent paperclips attached to a radio frequency connector.
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The Many Forms of a Flight-Qualified Antenna
6.2020
In order for an antenna to be qualified for mounting onto a non-stationary ground plane, it has to meet stricter vibration testing standards than it would for stationary mounting.
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Antenna Miniaturization
12.2019
As the phrase suggests, antenna miniaturization is the process of replicating an antenna’s functionality while reducing its physical size. Read more →
What is a Magnetic Flux Channel Antenna?
11.2019
Years ago, JEM Engineering developed the Magnetic Flux Channel Antenna. Now, the company has a series of these types of antennas, nicknamed MFC Antennas.
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STEM Day 2018
11.2018
Did you know that National STEM Day falls on the 8th of November each year? That’s because the abbreviation “NOV8” actually stands for “INNOVATE.”
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Reshaping Antenna Design with 3D Printing
7.2018
As we discussed in a previous post, before we can manufacture, we must prototype. For this step in the process, we are beginning to explore additive manufacturing, or as it’s more commonly known, 3D printing.
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The Makings of a Reliable Antenna
10.2017
Every product, specialty or off-the-shelf, must be designed, tested, and perfected by a team of experts, so that the end-user can be assured of its reliability.
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