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White Papers

Ultra Low Noise Amplifiers for Infrastructure Receiver Applications

Amplifiers used in wireless infrastructure receiver applications have the key requirements of low noise, high linearity, and unconditional stability. In order to meet these needs, Skyworks has developed a new family of low noise amplifiers (LNAs) implemented in 0.5 μm enhancement mode (E-Mode) pHEMT.

A Plethora of Ports: Making Sense of the Different Types of Ports in EM Planar Simulators

April 29, 2010 - This new white paper from AWR® provides a fundamental understanding of ports so that designers can select them properly in the process of circuit simulation. It traces the evolution of ports in EM simulation and examines all aspects of how they can be employed to make design simulation practical.

X-parameters® and Beyond, AWR’s Support of PHD and Nonlinear Behavioral Models

This white paper provides comprehensive information about rapidly-emerging nonlinear models and measurement systems and how AWR’s Microwave Office® high-frequency design software effectively employs them.

Understanding Grounding Concepts in EM Simulators

This white paper, written by EM expert Dr. John Dunn, demonstrates the importance of correctly selecting and assigning “ground” within EM simulators and how it is essential for successfully predicting the performance of board, package, and their associated interconnects.

Understanding Long-Term Evolution Fundamentals and Measurement Challenges

With release of the latest version of Release 8 of the 3rd Generation Partnership Project (3GPP) in June 2009, the core LTE specification has stabilized. 3GPP Release 8 also encompasses a considerable number of interim enhancements embodied in Evolved High-Speed Packet Access (eHSPA), also known as HSPA+.

Microwave Integrated Circuits: New Achievements from a “Mature” Technology

For more than 60 years, microwave technology has been synonymous with Microwave Integrated Circuits (MICs). The first MICs appeared in the 1940s, just over a decade after the first microwave circuits were introduced in waveguide form. Now, even though monolithic MICs (MMICs) have revolutionized (and made possible) most of today’s wireless-enabled devices, products based on MIC fabrication techniques remain the bulk of the output of the microwave industry.

Guidelines for Choosing RF and Microwave Products: Part 1

How to specify RF and microwave filters.

Consider the Costs of Not Migrating Your Test System

Test system migration and modernization doesn’t have to be expensive and fraught with hassle. In fact, carefully planned migration can maximize test-system efficiency, performance and readiness while providing meaningful cost savings.

Designing RF, Mixed-Technology Printed Circuit Boards

Printed circuit boards with both analog and digital circuitry are nearly universal. Recently, integration of RF circuitry in addition to the mixed analog and digital circuits has become more common. Problems arise because the PCB design tools have been ignorant of RF shapes printed on the board and a great deal of manual work was required to achieve a functioning product. Now, Mentor has teamed with RF Design Tool suppliers, such as Agilent, to bring the first integrated RF-PCB system tool.

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