Featured White Papers

Phased Array Antenna Patterns—Part 2

This is the second article of our three-part series on phased array antenna patterns. In Part 1, we introduced the phased array steering concept and looked at the influencers on array gain. In Part 2, we’ll discuss grating lobes and beam squint. Grating lobes can be hard to visualize, so we’ll draw on their similarity with signal aliasing in digital converters, then use that to think of a grating lobe as a spatial alias.

Screening Effectiveness and Transfer Impedance of (N)EMP Protection Components in the Installed Condition

While the world’s militaries increasingly rely upon seamless wireless communication networks for multi-domain battlefield readiness, protecting these mission critical networks from disruption and catastrophic failure becomes paramount.

Combining MMIC Reflectionless Filters to Create Ultra-Wideband (UWB) Bandpass Filters

Ultra-Wideband (UWB) radio is defined as any RF technology utilizing a bandwidth of greater than ¼ the center frequency or a bandwidth greater than 500 MHz [1] [2]. While UWB has been a known technology since the end of the 19th century, restrictions on transmission to prevent interference with narrow-band, continuous wave signals have limited its applications to defense and relatively few specially licensed operators [1].

COTS Software Defined Radio for 5G Development

The latest SDR modules offer SoC solutions with integrated I/O, ARM processors and FPGAs. Combining these attributes with superior signal integrity, phase-coherent sampling and multi-channel transceivers a COTS SDR system is an ideal choice for a 5G development platform. This article will familiarize the user with SDR using a multi-purpose COTS platform to reduce the time to market.

Accuracy – Space – Time: Navigating the Challenges of Testing Commercial Aircraft Radomes to RTCA-DO-213A Standards

Exploring the latest RTCA standards for nose mounted aircraft radome and how to meet them using a test method which is faster, more compact and more accurate than ever before. 

How to Ensure Reliability of Passive Components in GaN MMICs

Higher thermal conductivity and breakdown voltage makes GaN MMICs a key ingredient in the most critical aerospace, military, and satellite designs. However, while GaN on SiC RF technology is achieving widespread adoption in military and aerospace systems, reliability is a crucial requirement along with performance and affordability.

Introduction to the Vehicle-to-Everything Communications Service V2X Feature in 3GPP Release 14

Understand the basics on C-IST use cases and applications, the related system architecture and get a deep drive into the LTE based V2X protocol stack for out-of-coverage communication and synchronization. Get an insight into the physical resources and their assignment as well as the medium access control layer (MAC).

Phased Array Antenna Patterns—Part 1: Linear Array Beam Characteristics and Array Factor

With the proliferation of digital phased arrays in commercial and aerospace and defense applications, there are many engineers working on various aspects of the design who have limited phased array antenna familiarity.

Microwave Power Solutions for All Missions

Leonardo Microwave Power Solutions Department offers a complete set of high power microwave products developed and provided by the LEONARDO Electronics Division team based in Palermo (Italy) since 1956, for the production of high power vacuum electronic devices. In the 90s the product range was expanded with the introduction of chip and wire technology for microwave microelectronics hybrid integrated circuits, modules and sub-assemblies.

New Space Applications Add to Mix of Space-Qualified Crystal Oscillators

The low-earth orbit (LEO) satellite realm has spawned an entirely new class of devices requiring innovations in crystal oscillator products to meet performance and price benchmarks. Manufacturers of space-qualified crystal oscillators, like Q-Tech, have developed a range of devices (XO, TCXO, VCXO, and others) to provide optimized price and performance for each orbital application. This paper will delve into the subject with the objective of providing an informed understanding of the elements that go into device selection.