Featured White Papers

Mini Circuits

A Novel Solution for Board Design Compatibility with High-Rejection LTCC Filters

Mini-Circuits’ BFHK-series of ultra-high stopband rejection LTCC filters accelerates the drive towards RF/microwave circuit miniaturization while completely redefining performance levels achievable by LTCC filters. The BFHK-series of filters now achieves stopband rejections in excess of 90 dB in a surface mount LTCC component consuming just a fraction of the footprint area of even high-k dielectric based planar solutions.
Rohde and Schwarz

Fundamentals of THz Technology for 6G

This white paper offers an overview of the fundamentals of THz waves and their properties for various applications with a focus on 6G based communications.
Wolfspeed

Thermal Considerations for High-Power GaN RF Amplifiers

GaN provides higher power density efficiency than traditional silicon in applications requiring high-frequency operation. GaN RF HEMTs are finding applications across all RF market segments rather than just cellular base stations and military radars. In order to maximize these benefits, designers must understand the thermal environment and its limitations. 
Vaunix

Considerations for Creating Microwave and Millimeter-wave Automated Test Systems

Automated test systems are cornerstone to high frequency testing for 5G, next generation Wi-Fi, satellite communications systems. Programmable RF devices form the building blocks to these systems. This tech brief dives into specific considerations around the buildout of programmable RF test systems.
Rohde and Schwarz

5G RedCap: RF Implications for IoT Devices

The global transition to 5G is in full swing. Although 5G has primarily been used for smartphones and FWA applications, its potential applications are much broader. 5G will expand in scope to cover many more applications and device types. 5G Redcap will be a key step in this evolution.

Why Use Planar Inverted-F Antennas (PIFA) for Compact IoT Devices?

Increasing use of small wireless applications, such as Bluetooth, Wifi, Cellular, Positioning, brings challenges to integrate the antennas with maintained performance. There are several techniques for miniaturization of antennas with pros and cons. This paper presents how the PIFA technology can combine small size with good performance and frequency stability.

Electromagnetic Simulation for Electronic System Design in Aerospace and Defense

The aerospace and defense industry relies heavily upon advanced electronic systems for field communications, control, targeting, threat detection, asset tracking, health monitoring, and theater operations. These advanced electronic systems often require multiple, high-fidelity antennas. Those antennas, in turn, require interference free integration for maximum signal strength and reliability. This technical document provides an overview of Altair’s electromagnetics simulation strategies and technologies that support the development of complex electronic systems.

How to Measure and Reduce Common Mode EMI in Electric Drive Installations

Nowadays, electric machines are often driven by power electronic converters. Even though the use of converters brings with it a variety of advantages, common mode (CM) signals are a frequent problem in many installations. Common mode voltages induced by the converter drive common mode currents damage the motor bearings over time and significantly reduce the lifetime of the drive.

5G BTS Advancing Technology and Hardware Dimensions Driving Test Lab Reconfigurations

As a result of BTS antennas evolving to integrate 5G technology, antenna measurement techniques and test chamber setups are changing to meet new requirements. This white paper considers the advancing technology and expanding dimensions of 5G BTS and presents a solution in a novel reconfiguration of an anechoic test chamber.

4 kW X-Band Amplifier and Receiver Protector

GaN Solid State transistors are utilized in many radar platforms and provide compact and efficient sources of microwave power. CPI has developed a 4 kW X-band SSPA, CPI model VSX3717, for radar applications. This paper will present details of the SSPA amplifier and receiver protector used for airborne radar applications.