Published on: 2025-04-27 10:38:52
Date 2025-04-15 Introduction VNA PCB. Vector network analyzer is a device used to measure scattering parameters of electrical circuits operating at high frequencies. S-parameters tell how much a circuit reflects power back to the source and how much it attenuates or amplifies it to the other ports. Working with S-parameters is an essential part of designing any electronics operating at GHz frequencies. These devices aren't cheap, especially as the operating frequency increases. High end VNAs
Keywords: calibration frequency ghz measurement vna
Find related items on AmazonPublished on: 2025-06-14 18:15:19
A researcher has made a puzzling discovery while analyzing observations taken by NASA's James Webb Space Telescope. While analyzing images for the telescope's Advanced Deep Extragalactic Survey (JADES), Kansas State University associate professor of computer science Lior Shamir found that out of the 263 galaxies examined, two thirds of them rotated clockwise, while only a third rotated counterclockwise, as detailed in a paper published in the journal Monthly Notices of the Royal Astronomical So
Keywords: black galaxies hole measurements universe
Find related items on AmazonPublished on: 2025-06-29 15:07:33
Fix the lightguide in a laser meter (Luigi Rizzo, 2025-03-02) Over time I bought a few PLEM 50 Laser Meters from LIDL/Parkside. Most of them worked flawlessy. The last unit, however, PLEM 50 D4, is problematic. I almost constantly get "Error 255" messages at almost any distance and conditions (I am apparently not alone, judging on feedback on this and similar devices). The error is related to a problem with the sensor (low signal or so) and is expected at long distances, or in bright light. Bu
Keywords: error light lightguide measurement unit
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