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RELL

New Developments in Additive Manufacturing for RF/Microwave Applications

Additive Manufacturing and 3D printing have evolved quickly over the last few years and made its way into the RF and microwave market. We have seen everything from 3D printed PCBs and circuits to waveguides to antennas and lenses to connectors. Additive manufacturing has the advantages of being able to produce shapes that are not possible with traditional manufacturing techniques and able to miniaturize structures which is well suited for higher frequencies. They also use less material and in many cases are lighter than traditional manufactured parts. Additive manufactured parts can typically be produced much faster than traditional techniques for smaller quantities and fast prototypes. The eBook covers many of the recent innovative devices and components that additive manufacturing and 3D printing have enabled in the RF and microwave space. The articles cover 3D printed PCB circuits, antennas, coaxial SMA-to-waveguide transitions, copper and air dielectric routing circuits, filters, and waveguides.

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RELL

mmWave Technologies and Product Innovations

mmWave is the industry’s newest frontier, a free space resource that has triggered a “gold rush” of technology horses and applications riding them. This eBook samples a few of these applications and the challenges facing them. The first article, “Using E-Band for Wideband SatCom: Opportunities and Challenges,” contributed by Hughes Network Systems, describes the requirements for and challenges with E-Band links between the earth and geostationary satellites. The new article “Virtual Cable Calibration for OTA Testing of 5G mmWave Devices” by Rohde & Schwarz describes the concept and how it is used to ensure compliance to the 3GPP standards. The article “6G: Innovating the Future of Wireless Communications,” submitted by Keysight Technologies, surveys a few of the use cases being discussed and the consortiums formed to explore them. Wide bandwidth at sub-THz frequencies is a shared theme. “Satcom, the New mmWave Frontier,” also contributed by Keysight Technologies, returns to mmWave satellite links, specifically the difficulty making accurate and repeatable measurements, particularly OTA. The article “5G Fixed Wireless Access Array and RF Front-End Trade-Offs,” contributed by Qorvo, outlines the design of a fixed wireless access system for a suburban neighborhood, including the design of the phased array and trade-offs among the semiconductor technology options for the front-end module. Concluding the eBook, an article from Qorvo discusses phase noise, an important parameter that can limit the data rate of communications systems.

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RELL

RF & Microwave Components for SatCom Applications

Whether prompted by the convenience of small size, the fuel savings from lighter weight or the smaller wavelengths of higher frequencies, size is on an inexorable decline. Moore’s Law is the archetype defining the shrinking of semiconductor technology, yet it would not be possible without other components following the same trend, particularly the passive devices that filter and route the signals processed by the ICs. This eBook compiled by Knowles explores some of the market and technology trends driving the demand for higher frequencies and smaller size. Beginning with an overview of the classic Wilkinson power divider and combiner designs, it also covers various other SATCOM related component technologies ranging from PCBs to high speed converters to phased arrays plus test challenges in this area.

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DRELLesign Considerations for High Reliability RF PCB Circuit Designs for Extreme Environments

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.

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RELL

New Developments in SATCOM Amplifiers and Antennas

This eBook covers new RF design techniques being used in the area of SATCOM. It starts off with an overview of defense technologies by Strategy Analytics followed by two articles on the design of GaN amplifiers for SATCOM including new GaN-on-diamond amplifiers and another on space qualified GaN amplifiers. And the final article takes a look at new antenna technologies that promise great improvements for SATCOM and other applications. Read this eBook to learn about these new trends in SATCOM design.

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RELL

SATCOM GaN Power Amplifier Design

The first article in this eBook is written by Strategy Analytics’ Asif Anwar covering the military satellite terminal basics, market trends and the outlook for this market. With a major shift from GaAs to GaN as the semiconductor device material of choice, Norsat compares the two technologies covering the reasons for this shift and the advantages of GaN technology for SATCOM amplifiers. Another article covers the design of a broadband, highly efficient, GaN power amplifier. The last article reviews GaN SSPA technology for space-based applications covering the challenges to device design and reliability as they start to replace TWTs in this area. Read this eBook to learn about these important topics in SATCOM amplifiers.

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Rogers Corp

GPS/GNSS Interference Challenges and Solutions

With the expansion of GNSS/GPS systems worldwide, this eBook addresses the critical interference issues covering filter design, co-existence of systems, system architecture, testing, temperature considerations and more in the successful design of GNSS/GPS systems for today’s wireless applications. It also offers insight into basic filter design in systems and filter design trends in the market.

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