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keysighttechnologies

Our second 5G Handbook is now available

May 18, 2022 By Martin Rowe

Featuring 15 articles, the 2022 5G Handbook looks at private networks, timing, connectivity, latency, mmWaves, test, and other topics.

Filed Under: Digital Edition Back Issue Tagged With: Benetel, CEVAdsp, Green Cubes, imec, keysighttechnologies, microchip, molex, National Instruments, Parallel Wireless, Rakuten Symphony, rohde&schwarz, SiTime, teradyne

Simulate, test, and verify to solve 5G RF design problems

May 3, 2021 By Martin Rowe

Performing these three steps can improve mmWave and beamforming performance.

Filed Under: Digital Edition Back Issue Tagged With: keysighttechnologies

What are the applications and measurements of S-parameters? (Part 2)

October 31, 2019 By Bill Schweber

Part 1 of this FAQ was a basic introduction to the context and concept of s-parameters. Part 2 looks at their measurement and application and relationship to the time domain. Q: How do you actually measure s-parameters? A: In general, except for approximate measurements, you cannot use a spectrum analyzer alone for this frequency-domain test. […]

Filed Under: Analog ICs, FAQ, Featured Tagged With: FAQ, keysighttechnologies, tektronix

What are the functions and principles of S-parameters (Part 1)?

October 28, 2019 By Bill Schweber

s-parameters

As design frequencies now routinely go into the hundreds of MHz and tens of GHz range, conventional voltage and current measurements are not useful, but scattering (s) parameters can fully characterize the RF component or path performance. For engineers with experience focused from DC to several hundred megahertz, it is usually sufficient to characterize components […]

Filed Under: Applications, FAQ, Featured, Wireless Tagged With: FAQ, keysighttechnologies

RF Switches, Part 2: Analog and MEMS switches

June 24, 2019 By Bill Schweber

Analog and MEMS Switches

Part 1 of this FAQ looked at the venerable electromechanical RF switch – still widely used in some applications, where it is the only viable option – and use of PIN diodes as RF switches. This part looks at analog and MEMS-based switches. Q: What is an analog switch? A: It’s conceptually straightforward: in basic […]

Filed Under: Analog ICs, FAQ, Featured, MEMS & Sensors Tagged With: analogdevicesinc, FAQ, infineon, keysighttechnologies, microchiptechnology, microsemicorp, psemi, skyworkssolutionsinc

RF switches, Part 1: Mechanical and PIN-diode switches

June 19, 2019 By Bill Schweber

RF switches

There’s a ubiquitous and increasing need to switch RF signals ranging into the tens of GHz; four basic switch technologies – electromechanical, PIN diode, analog, and MEMS – are available, each with different features and capabilities. The need to switch RF signals has been a necessary design function since the earliest days of “wireless.” This […]

Filed Under: Analog ICs, Applications, FAQ, Featured, RF Equipment, Wireless Tagged With: analogdevicesinc, infineon, keysighttechnologies, microsemicorp, psemi, skyworkssolutionsinc

RF/microwave noise, Part 1: Noise figure basics

July 25, 2018 By Bill Schweber

RF/microwave noise

The lower-frequency world of electronic circuits and systems for communications links routinely uses parameters such as voltage and current, bit rates, and signal/noise ratio, to cite just a few of many, many possibilities. While these are also important in the world of RF and microwave links and system functions, engineers doing work in this arena […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ, keysighttechnologies, nationalinstrumentsinc

Load pull for RF devices, Part 2: How and where

July 16, 2018 By Bill Schweber

Part 1 of this FAQ explained the what and why of load-pull tests of RF devices and impedance matching. Part 2 looks at various ways the test can be set up and run. Q: What’s the basic test setup for a modern load pull? A: As shown in the figure of Part 1 (and repeated […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ, keysighttechnologies, maurymicrowavecorporation

Load pull for RF devices, Part 1: What and why

July 9, 2018 By Bill Schweber

load pull

Impedance matching between RF stages has always been a priority to ensure maximum transfer of RF power along with minimal RF-power reflections. Although most RF systems are designed for nominal 50-ohm input and output impedance (and 75-ohm for cable TV), the reality is that many components do not present that preferred 50-ohm impedance due to […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ, keysighttechnologies

RF power measurement, Part 2: What and how

April 25, 2018 By Bill Schweber

RF power measurement

Part 1 of this FAQ introduced some of the basic issues related to the measurement of RF power, which is a primary parameter in most RF designs. Part 2 continues the discussion, looking at RF waveforms and sensors. Q: The term “power” is fairly broad; what are the specifics? A: There are actually several basic […]

Filed Under: Applications, FAQ, Featured, Telecommunications, Wireless Tagged With: basics, boontonwirelesstelecomgroup, FAQ, keysighttechnologies, nationalinstruments

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A frequency you can count on There are few constants in life, but what few there are might include death, taxes, and a U.S. grid frequency that doesn’t vary by more than ±0.5 Hz. However, the certainty of the grid frequency is coming into question, thanks to the rising percentage of renewable energy sources that…

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