dB Or Not db? Everything You Need To Know About Decibels But Were Afraid To Ask

What is a decibel and how should we use it in our calculations? Decibels are found everywhere, including power levels, voltages, reflection coefficients, noise figures, field strengths, and more. Yet, many calculations using decibels leave even experienced engineers scratching their heads. This application note is intended as a refresher on the subject of decibels.

  • Power Amplifier with Unrivaled Size and Power Advantages: Model 2170
    Power Amplifier with Unrivaled Size and Power Advantages: Model 2170

    This amplifier covers the 1 to 3 GHz frequency range while delivering 1 kW of broadband output power in a 5U, air-cooled chassis. Its performance and size make it an ideal solution for test and measurement, electronic warfare, and communications applications. More specifically, it’s designed for octave bandwidth high power CW, modulated, and pulse applications.

  • Thin-Film Hybrid Oxide-Organic Microprocessor
    Thin-Film Hybrid Oxide-Organic Microprocessor

    Holst Centre, imec and their partner Evonik have realized a general-purpose 8-bit microprocessor, manufactured using complementary thin-film transistors (TFTs) processed at temperatures compatible with plastic foil substrates (250°C).

  • Wireless Brain Sensor Could Pave Way For Improved Neuroprosthetics
    Wireless Brain Sensor Could Pave Way For Improved Neuroprosthetics

    A wireless system for brain studies now enables the remote acquisition of high-fidelity neural data from animal models. Previously, wires and cables constrained these types of experiments to artificial scenarios. With the new system, neural data can be obtained during normal, unrehearsed activities.

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  • Predicting Electromagnetic Interference For High-Performance Electronic Design
    Predicting Electromagnetic Interference For High-Performance Electronic Design

    The industry often speaks of electromagnetic interference (EMI) with a singular mindset: It’s a problem. This paper discusses a straightforward EMI simulation methodology to accurately characterize electromagnetic behavior of an electronic system, simulate its performance in real-time, emulate regulatory EMI emissions tests, and capture simulation results to aid in identifying and isolating sources of interference if an EMI problem exists.

Logarithmic Amplifier/Detector Characterization Utilizing A Modern Vector Network Analyzer

When characterizing the log amp/detector, a number of RF measurements must be performed. At minimum, those tests include input (S11) match, output (S22) match, and output log conformance. Log detector errors include DC output bias and slope error. Limited outputs must also be measured for absolute power and input threshold. While these tests many appear straightforward, the conventional test systems typically used to perform them often face a number of limitations. Fortunately, many of these limitations can now be overcome with just a single instrument—a modern vector network analyzer (VNA).

Leveraging Semi-Solid Metal Casting For Manufacturing Complex Parts

Brisbane, California startup Fighting Walrus recently developed its Fighting Walrus Radio – a 900 MHz telemetry radio used in conjunction with iPhones or iPads in order to effectively control the flight of commercially available drones. This case study explains how Proto Labs helped them determine that a magnesium thixomolding process was the most ideal solution in developing the radio’s antenna housing and clamps.

Noise Considerations In High Speed Converter Signal Chains

Designing in high speed analog signal chains can be challenging because there are so many noise sources to consider. In this article, the most common outside noise sources are described, along with how they influence the total dynamic system performance of a high speed signal chain. The article also provides some analog and digital tricks that can be employed to further increase the signal-to-noise ratio in your next design.

The Advantages Of Millimeter Wave Transmission Systems Over Fiber Optics

Traditionally, wireless communication has been limited in its capacity to transport gigabit quantities of data due to bandwidth limitations set by the FCC, making fiber-optics a relevant alternative for communication systems. That all changed, however, with the opening of the 71 to 76 and the 81 the 86 GHz bands — referred to as the “E-Band” range of millimeter wave (MMW) frequencies. This article discusses the advantages that MMW communication systems have over their fiber-optic counterparts.

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  • Amazon’s New Smartphone Boasts High-End RF And Imaging Components
    Amazon’s New Smartphone Boasts High-End RF And Imaging Components

    On July 25, Amazon released its first smartphone, and it didn’t take long for the internal components of the device to get leaked.

  • 4 Electronic Design Requirements Of The System-Integrated Soldier
    4 Electronic Design Requirements Of The System-Integrated Soldier

    Perhaps most famously portrayed in Robert Heinlein’s Starship Troopers (1959), the idea of the “future soldier” has been around for decades. As rehashed in countless science fiction films and video games, the stereotypical future soldier is equipped with a protective exoskeleton, enhanced sensory equipment, seamless communication systems, and advanced weaponry. While the concept once seemed implausible, there are many real-world projects under way focused on realizing those seemingly fictitious warfighter capabilities — by integrating a plethora of diverse electronic subsystems into a cohesively operational suit.

  • 7 Noteworthy Technologies From IMS2014
    7 Noteworthy Technologies From IMS2014

    At the 2014 IEEE MTT International Microwave Symposium earlier this month, I had the opportunity to speak with the event’s general chair, Dr. Larry Dunleavy, about the state of the RF and microwave design industry. While he acknowledged that it is a time of relative uncertainty — due in large part to constrained military budgets and conservative fiscal forecasts for 2014 — he also pointed out that there are plenty of emerging markets where RF and microwave technology is making a significant impact. With the Internet of Things (IoT) driving innovation in burgeoning markets like automotive and healthcare  and the development of 5G pushing wireless technology to further heights, there was good reason for nearly 600 companies to flock to the IMS2014 exhibition in Tampa, Fla.

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  • EM De-Embedding Magic – Part 4: Internal Ports
    EM De-Embedding Magic – Part 4: Internal Ports

    To get useful results during EM analysis, answers must be accurate. Errors in impedances of even a few tenths of an Ohm will be disastrous. Those who use an EM port calibration that is dependent on the traditional definitions of Z0 will have that magnitude of error before they even start. In the final article of his four-part series, James Rautio of Sonnet Software addresses the problems that arise during EM port calibration and discusses a powerful technique for tuning filters in just a few minutes with nearly full EM accuracy.

  • GaAs And GaN Capabilities On Display At Farnborough
    GaAs And GaN Capabilities On Display At Farnborough

    The UK was host to air shows recently with the annual Royal International Air Tattoo (RIAT) and the biennial Farnborough International AirShow (FIA) 2014. I had the opportunity to attend a Lockheed Martin F-35/F-16 preview day held at RAF Fairford, the venue for RIAT, as well as taking a few days to attend FIA 2014.

  • Lockheed Martin Previews F-35 Lightning II "Fighter Of The Future"
    Lockheed Martin Previews F-35 Lightning II "Fighter Of The Future"

    The U.K. was host to air shows recently with the annual Royal International Air Tattoo (RIAT) and the biennial Farnborough International AirShow (FIA) 2014. In this article, Asif Anwar from Strategy Analytics describes his experience at the Lockheed Martin F-35/F-16 preview day held at RAF Fairford, the venue for RIAT, and provides an overview of the new capabilities of each aircraft.

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RF Globalnet Welcomes Our Newest Supplier

Atlanta Micro, Inc was founded in 2011 with the purpose of designing and manufacturing high performance RF and Microwave products for demanding customer applications. The company is based in Alpharetta, Georgia, just north of Atlanta. Our executives possess over 40 years of experience designing state‑of‑the‑art components, receivers, transceivers and systems for the military, government agencies and the test equipment community. Atlanta Micro is focused on providing best‑in‑class broadband RF solutions meeting stringent specifications while offering reduced size, weight and power consumption necessary for portable and low power platforms. Our products are designed to meet customer needs that have been identified through our extensive experience.

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The CST Webinar Series 2014 offers 12 free webinars that provide an insight into EM simulation and techniques to shorten the design cycle and reduce the number of costly prototypes required. No matter your level of experience, whichever webinar you attend, we think you'll benefit. Registrations for coming webinars are open and aired webinars are now available on demand. Learn more.


Electromagnetic Solutions For Military Defense

Electromagnetic Solutions For Military Defense

Remcom provides innovative EM simulation and wireless propagation tools as well as expertise that can be leveraged in consulting partnerships. In addition to our software products, our Government Services Division provides crucial support to the Department of Defense, providing high-quality analysis, solving challenging technical problems, and developing and maintaining high-fidelity computational capabilities in the area of EM propagation for government software applications.

Analog-To-Digital Converter: MCP3421

Analog-To-Digital Converter: MCP3421

The MCP3421 is a single channel low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially. The device uses a two-wire I2C™ compatible serial interface and operates from a single power supply ranging from 2.7V to 5.5V. The MCP3421 device performs conversions at rates of 3.75, 15, 60 or 240 samples per second depending on user controllable configuration bit settings using the two-wire I2C™ compatible serial interface. This device has an onboard programmable gain amplifier (PGA). User can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3421 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) Continuous mode and (b) One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. The MCP3421 device can be used for various high accuracy analog-to-digital data conversion applications where ease of use, low power consumption and small footprint are major considerations.

6-18 GHz Wilkinson Power Divider: PDW05758

6-18 GHz Wilkinson Power Divider: PDW05758

DLI’s PDW05758 is a high frequency SMT Wilkinson power divider covering the 6-18 GHz frequency range. It features 0.7 dB insertion loss (typical), 20 dB isolation and return loss (typical), excellent phase and amplitude balance, and a compact size.

Low Loss Microwave Cable: SUCOFLEX 400

Low Loss Microwave Cable: SUCOFLEX 400

The new SUCOFLEX 400 microwave cable family has been specifically developed for industrial, medical, test and measurement and ground defence applications, where the lowest loss, highest performance, best phase stability versus temperature and phase stability versus bending, excellent return loss and mechanical stability are of the utmost importance.
RF Cosite Modeling Software: EMIT

RF Cosite Modeling Software: EMIT

EMIT (electromagnetic interference toolkit) is a type of simulation software used to predict EMI (electromagnetic interference) in complex RF environments containing multiple transmitters and receivers, and to predict in-band and out-of-band interference effects for all Tx/Rx (transmitter/receiver) pairs in the scene.

FCC-1 Tuned Dipole Antenna - 25 MHz - 70 MHz

FCC-1 Tuned Dipole Antenna - 25 MHz - 70 MHz

25 MHz - 70 MHz FCC-1 Tuned Dipole Antenna A.H. Systems

75P-022: Relay Programmable Attenuator

The model 75P-022 from JFW Industries is a relay programmable attenuator with a frequency range of DC to 1000 MHz


Corry Micronics offers a line of 4 bit through 6 bit RF digital attenuators. The digital attenuators are designed using switched bit pin diodes. The attenuators require +/-5volt power supply and feature TTL compatible control logic. Corry Micronics also offers a high REL option that includes screen to the MIL-STD-883...
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Skyworks Solutions, Inc.

Skyworks Solutions, Inc.

Skyworks is the industry’s leading wireless semiconductor company focused on RF and complete semiconductor systems for mobile communications applications...

Teledyne Microwave Solutions

Teledyne Microwave Solutions

Your single source for microwave electronics, Teledyne Microwave Solutions (TMS) delivers the world’s most advanced microwave technologies for demanding aerospace, military, commercial and industrial applications. For over 50 years, leading organizations across the globe have turned to us for the most innovative microwave technologies…and that tradition lives on.



Remcom provides innovative electromagnetic simulation software and consulting services. Our products simplify the analysis of complex EM problems and lead the market in FDTD-based modeling and simulation.

API Technologies Corp

API Technologies Corp

API Technologies has a long heritage in the development and manufacturing of RF & Microwave components and systems for military, space and commercial applications. Product offerings include: Filters, High Power Amplifiers, Switched Filter Banks, Integrated Microwave Assemblies and Hybrid Microelectronics.

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Electronic Military & Defense was developed as a resource for engineers, program managers, project managers, and other professionals involved in the design and development of electronic and electro-optic systems for a wide range of defense and aerospace applications. Check out the digital edition of our latest issue for exclusive editorial on wearable antennas for military applications, countering EMI threats, biological and chemical threat detection, advances in optical sensing, and more.

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  • In-Depth SONAR Systems And Technology Market Insights To 2020

    ReportsnReports.com adds "SONAR Systems and Technology Market by Type - Active, Passive, By Application - Commercial, Military, Scientific, System and Geography - Forecasts & Analysis to 2014 - 2020" global research report to its store.

  • Raytheon To Implement Modernized Air Traffic Control System Throughout The National Air Space

    Raytheon Company (NYSE: RTN) has been awarded a $350 million Federal Aviation Administration (FAA) contract modification to continue the upgrade of 135 air traffic control centers to the Standard Terminal Automation System (STARS) through September 2017. Implementation of STARS at these airports will bring all of the largest airports and the majority (90%+) of all Terminal air space controlled by the FAA onto the NextGen terminal automation platform.

  • BAE Systems Awarded Contract To Begin Armored Multi-Purpose Vehicle Program
    BAE Systems Awarded Contract To Begin Armored Multi-Purpose Vehicle Program

    BAE Systems was awarded a contract worth up to $1.2B from the U.S. Army for the Engineering, Manufacturing, and Development (EMD) and Low-Rate Initial Production (LRIP) of the Armored Multi-Purpose Vehicle (AMPV).

  • KRYTAR Announces New Compact Directional Coupler With 6 dB Coupling Over 7.0 To 12.4 GHz Frequency Range
    KRYTAR Announces New Compact Directional Coupler With 6 dB Coupling Over 7.0 To 12.4 GHz Frequency Range

    KRYTAR, Inc., a leader in the design and production of ultra-broadband microwave components and test equipment announces the continued expansion of its line of directional couplers with the addition of a new model offering 6 dB of Coupling over the frequency range of 7.0 to 12.4 GHz, in a single, compact and lightweight package.

  • Small CubeSat Provides Big Space Experience
    Small CubeSat Provides Big Space Experience

    Any way you slice it, space exploration -- done right -- requires an inordinate range of technical expertise. From designing the spacecraft, the mission proposal and the circuit boards to testing the flight software and putting together budgets, sending something, anything, into the cosmos depends on good people who know their job.

  • Four Galileo Satellites At ESA Test Centre
    Four Galileo Satellites At ESA Test Centre

    ESA engineers unwrapped a welcome Christmas present: the latest Galileo satellite. The navigation satellite will undergo a full checkout in Europe’s largest satellite test facility to prove its readiness for space.

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DesignCon 2015

January 27 - 30, 2015
Santa Clara, CA
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