White Papers

Remcom

Ray-Optical Modeling of Wireless Coverage Enhancement Using Engineered Electromagnetic Surfaces: Experimental Verification at 28 GHz

Engineered electromagnetic surfaces (EES) are passive metasurfaces designed to artificially enhance wireless signal coverage. In this paper, propagation experiments are conducted to verify the accuracy of a novel ray-optical scattering model for EES. Wireless InSite’s implementation of the scattering model is presented along with measured and simulated propagation data for a large indoor office environment.

RS

Characterizing Parasitic Components in Power Converters

The increased use of wide bandgap semiconductors like GaN and SiC in power converters enables high-power-density supplies with low switching losses and improved efficiency. Yet, benefits of these fast-switching transistors can be hindered without addressing parasitics at high frequencies. The white paper introduces parasitics, describes their presence in passive components, and demonstrates using the R&S®LCX200 LCR meter.

QMicrowave

RF Filter Packaging Guide

In this White Paper you will learn about RF filter materials, configurations and packaging, as well as filter design, material selection, SWaP-C, and customization.

Fortify

Microwave Lenses with Lower Weight, Higher Gain, Better Aperture Efficiency - A Head to Head Comparison of Luneburg Lenses to Rexolite Lenses

A head-to-head measurement of Fortify’s 3D printed Luneburg lens’ demonstrated improvements in gain, efficiency, weight, and manufacturability over a legacy Rexolite lens solution. Fortify’s 3D printed Luneburg lens demonstrated improvements in gain, efficiency, weight, and manufacturability over the legacy Rexolite lens solution.

Boonton

Measuring RF & Microwave Power

In today’s wireless world, RF signals are transmitted and received to effectively send data and facilitate wireless communications. Among all the parameters to consider in RF design, power measurements remain one of the most critical metrics for designers and operators. 

Quantic MWD

Phase Noise Impact on Satellite Uplink and Downlink Channel Capacity

This white paper gives an overview of the critical issue of phase noise in satellite communication systems and its impact on channel capacity.  Phase noise is a significant contributor to Signal-to-Noise Ratio (SNR) and as such is an important determinant of channel capacity in any communication link. Phase noise, originating from various sources such as satellite transponders and ground equipment can significantly degrade the performance of satellite links, leading to reduced throughput and increased error rates. Understanding and mitigating phase noise is vital for optimizing satellite communication networks and ensuring efficient data transmission. 

Analog Devices

How Minimizing Pulse Droop in GaN Power Amplifiers Improves Radar Range

This article will focus on GaN PA pulse droop as a nonideality of real-world radar performance and will discuss what can be done to mitigate its negative impact on radar range. With advanced solid-state electronics inserted at the output stages for many radar RF chains, system engineers can set specifications to achieve improved range, resolution, and sensing capabilities. 

Copper Mountain

Understanding Shield Effectiveness

Shielding, or screening effectiveness, is essential to the safe operation of electric vehicles (EVs). There was a time when the noise generated by the spark plugs firing in an internal combustion engine caused an annoying buzz when listening to the AM radio. Circuit designs have since evolved, and this issue was eventually resolved, but now the issue is back. 

Rohde Schwarz

5G NR-V2X for Enhanced Automotive Communications

This white paper provides a technology deep dive into the architecture, protocols and physical layer of 5G NR V2X communications in line with 3GPP Release 16. Download this white paper to learn the details of how NR V2X cooperates and interoperates with legacy V2X communications like LTE-V2X and extends its capabilities.

Quantic Croven

The Application of Pressure Correction to RGA Test Results for Vacuum Sealed Quartz Resonators

This white paper explores the application of pressure correction to Residual Gas Analysis (RGA) test results for vacuum-sealed quartz resonators. RGA testing, crucial for assessing hermeticity and preventing device failure, is discussed with a focus on moisture concentration. The paper introduces the amendment of MIL-STD-883 M1018 for pressure correction and provides insights into estimating internal pressure and applying correction factors. The importance of correcting data for low package sealing pressure is emphasized for accurate evaluation of device reliability.