eBooks

The articles in this eBook make the case for GaN for cellular applications. It begins with two views of the market trends and how these translate into forecasts, from Yole Développement and Strategy Analytics. Since efficiency is so important to power amplifiers, a foundational article by Rohde & Schwarz reviews the fundamental mechanisms that can improve PA efficiency: waveform engineering, supply modulation and load modulation. Illustrating waveform engineering, an article from researchers at Huazhong University of Science and Technology describe the design of a dual-band, continuous inverse class F PA. The following article examines the topology options for mMIMO PAs. Looking to the future, it concludes with an article describing development of a 28 GHz, ½ W linear, asymmetric Doherty PA MMIC.

This eBook covers the fundamentals of radar technology and RF power generation theory. The first article covers the military radar market and outlook through 2025 followed by an extensive article that takes a comprehensive look at the many aspects of radar technology including the basics of radar operation, how radar works and various types of radar systems. The next two articles review the theory of operation for receiver protectors and magnetrons. The last article covers the underlying concepts of receiver protector life and how they apply to actual performance. This is a very good guide to the basics of radar and the theory of operation of the key components that generate high power RF signals for radar systems.

This eBook takes a look at new measurement tools, connectors and components that will help in modernizing your measurements for accurate higher frequency characterization. After an overview of mmWave markets and challenges for EMC, the following articles cover accurate VNA measurements made when the DUT needs to be far from the instrument like a far-field antenna, vehicle or propagation measurement. The next article surveys waveguide antennas for mmWave use so that you can understand the basic performance of waveguide antennas when choosing an antenna for a mmWave system or test setup. Then a traceable K connector for measurements to 43.5 GHz is described. The last article is about 110 GHz coaxial components for the mmWave market, including bias tees, DC blocks and directional couplers. These components are metrology-grade, with excellent electrical and environmental performance, designed to be used with any measurement equipment that provides coverage to 110 GHz. Learn how to modernize your measurement and testing systems to accurately support higher frequency measurements.

This eBook looks at a new antenna design that can connect to any mmWave module and provide better efficiency than patch antennas yet still fit into the compact size form factor for smartphones and other mobile devices. The first article covers the design requirements and challenges for mmWave 5G compact smartphone antennas. The need for mmWaves is outlined followed by a contrast of 4G and 5G architectures highlighting the differences in their antenna designs. Case studies of deployment scenarios for outdoor and indoor links are presented. A detailed set of requirements for antenna designs of future smartphones is discussed. Some previously reported candidate antenna designs are also reviewed. The second article provides specific compact wideband design examples and the third includes several pattern diversity architecture examples.

This eBook addresses many design issues with PCBs for high power GaN devices, higher frequency mmWave circuits, thermal expansion effects, heat sinking, extending operating temperatures, reducing circuit size, copper surface roughness effects, interface materials and connector launch methods. The first two articles deal with high power GaN devices addressing some of the design challenges for high voltage and high frequency designs. The next article looks at PCB materials to reduce circuit size and the one after addresses thermal power handling in space applications. The next article looks at environmental effects on circuit performance and how to test them while the last two articles address designing PCB mmWave circuits including amplifiers.

The expansion of activities in the areas of SATCOM, automotive radar, 5G, security and others are pushing semiconductor technologies higher in frequency. The design of mmWave MMICs is much more difficult that those at lower frequencies as everything becomes much more sensitive in the design tradeoffs that affect performance. In this eBook we have collected some of the latest information on testing and designing mmWave MMICs to help in your selection and understanding of these devices.

This eBook covers a wide variety of current design and test challenges in the high frequency range from the lower to upper levels in the mmWave band. The first article is about using drones to measure satellite antennas in a more efficient and cost-effective way by avoiding transporting them to test facilities. The following article discusses the best semiconductor technologies for cellular applications about 90 GHz looking toward 6G. It compares the advantages and disadvantages of each platform. The next article compares several different packaging technologies for mmWave applications including cofired ceramic, antenna in package, fan-out wafer level packaging and PolyStrata®. Finally, the last article reviews the use of broadband free space methods for measuring dielectric materials at mmWave frequencies. These methods are coming under increased usage due to the increasing interest in 5G and mmWave sensing applications.

This eBook contains a series of articles that describing new MEMS switch technologies. Part I reports on MEMS switch topologies including a new defective ground structure (DGS) and metamaterial inspired capacitive contact MEMS switch; Part II reports methods to reduce stiction effects in a resistive contact MEMS switch; and Part III discusses methods to reduce static friction (or stiction) effects in a capacitive contact MEMS switch for applications in modern electronic circuits and 5G communications. Read about this fascinating development effort done by C.A.R.E, Indian Institute of Technology in Delhi partnering with Synergy Microwave in New Jersey as top scientists from both organization cooperated to develop these new topologies resulting in ground breaking performance for MEMS switches.

This eBook provides design advice on mmWave components and some examples of the new systems and applications where companies are providing interesting solutions. SOI is a semiconductor platform well suited for mmWave applications and so that is covered in the first article. Knowles offers design advice in several of the articles covering optimized solutions for many passive devices for mmWave applications. A unique liquid crystal steerable antenna system is also covered along with trends in millimeter phased arrays and MIMO radar. Another article looks at the role of satellites in 5G networks. Read this collection of articles for design advice and interesting examples of how mmWave components are being used in practical applications.

This eBook covers new market and design trends in GaN technology starting off with semiconductor trends in sub-6 GHz 5G Networks where the wider bandwidths and high efficiency are favoring GaN technology in many cases. Then Cobham covers AESA phased array and MIMO radar trends and new design techniques are covered with a modular system approach. The next two articles cover high efficiency GaN amplifier design techniques started with efficiency enhancement mechanisms for various class amplifiers and then a mmWave Doherty amplifier design. The last article introduces large-signal model technology by Wolfspeed and other resources available for high-frequency designers.