Washington, DC — The 2024 International Microwave Symposium took place here in June at the Walter E. Washington Convention Center. As always, RF/microwave/mmWave test equipment was all over the exhibit hall. Frequency-domain test equipment — spectrum analyzers, vector network analyzers, power meters, and signal generators — were, of course, dominant. Other equipment, such as oscilloscopes […]
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What’s a half digit and are they all the same?
The most significant digit on a DMM’s display often doesn’t count 0 through 9.
Wi-Fi 7 approaches, now comes the testing
Keysight’s E7515W lets you test Wi-Fi 7 chipsets and systems.
What is de-embedding and how do I perform it (part 2)?
When testing a device in a fixture, you can use transfer scattering parameters (T-parameters) to help remove the fixture’s contribution from your measurement result.
What is de-embedding and how do I perform it (part 1)?
It’s a tenet of the test-and-measurement industry that you should concentrate on looking for defects in your device under test (DUT) — not in your test equipment. Figure 1 illustrates a common problem. An instrument presents an incorrect reading; in this case, an LRC meter or multimeter presents a resistance reading that’s about 5% low. […]
Test applications handle automotive SerDes, MIPI A-PHY and ASA standards
New automotive serializer/deserializer (SerDes) transmit and channel test applications, as well as an automotive adapter portfolio to verify mobile industry processor interface (MIPI) A-PHY and Automotive SerDes Alliance (ASA) standards were developed by Keysight Technologies in collaboration with Sony Semiconductor Solutions Corp. and Rosenberger. High-speed automotive SerDes interfaces enable transport data streams to make in-vehicle […]
Design software helps speed RF system, IC, module and board development
PathWave System Design 2022 and PathWave Advanced Design System (ADS) 2022 software speeds design development, as well as enhances performance and accuracy, through an integrated workflow that accelerates delivery of radio frequency (RF) systems, chips, modules and boards. Demand for wireless data and increasingly congested wireless spectrum requires RF design teams to work in a […]
Test system validates 400GE networks and devices
The new AresONE-S 400GE test system enables network equipment manufacturers and data center operators to validate complex, mixed 400 gigabit Ethernet (GE) and lower-speed networks and devices. Data center operators have widely deployed mature 100GE non-return-to-zero (NRZ)-based technologies. However, higher Ethernet speeds, such as 400GE, create new mixed signaling and forward error correction (FEC) implementations […]
Basics of QAM reception and its measurement
A conventional AM broadcast generally begins in the studio as a music or voice audio signal. The audio signal modulates the amplitude of a radio-frequency electrical signal. This AM signal–also referred to as double-sideband amplitude modulation to distinguish it from single-sideband modulation–produces equal frequency sidebands on either side of the center frequency. In single-sideband modulation […]
The back and forth of interferometer technology
Conceptually, the interferometer is a relatively simple instrument that compares two distances typically differing only by a slight amount. Two waves, often coherent light waves, reflect from standard mirrors mounted at the object under investigation. The light from one mirror passes through a half-silvered mirror while the light from the other reflects from the back […]
