The scaleable amplifier/ chamber dilemma solved
Did you know that amplifiers for reverberation testing chambers can be scaleable? Picking the proper amplifier is a major factor in the total costs of a new chamber. That is one of the reasons we teamed up with Rohde & Schwarz, the global market leader in EMC and immunity test solutions, including solid-state RF Microwave amplifiers in various frequency bands/bandwidth combinations and power classes.
Javelin Tip Absorbers in Long Island
At our table during the 7th Annual IEEE Long Island MTTS/APS Symposium in Long Island (NY), we will demonstrate the new Javelin Tip closed-cell absorber family we developed with our sister company, Dutch Microwave Absorber Solutions (DMAS).
The advantages of screwing clampings
It is not easy to replace soldered finger-stocks in the doorframe of your test chamber. That’s why we switched already in 1999 to screw clampings. Our colleague Gerco van Diemen explains why you will benefit from this. “Clampings hold the finger-stocks in place. Finger-stocks are the copper clamps that ensure that the door of a test chamber is completely sealed and no RF leakage occurs. They are a vulnerable part of a chamber’s Faraday cage construction. Traditionally, these are soldered, but we have developed a way where using screws has the same protective effect.”
Leaders in innovation are joining forces
Comtest Engineering and Rohde & Schwarz are collaborating to offer optimised reverb test system solutions for all relevant compliance standards such as IEC 61000-4-21, ISO 11451-5, ISO 11452-11, MIL-STD-461G, RTCA/DO-160G, EUROCAE/ED-14 and various automotive OEM standards.
CISPR25 Edition 5 & partial absorber lining
What are the design criteria for CISPR25 towards absorber lining as per the latest standard version? CISPR 25 was initially published in 1995. The 5th edition, published in 2021, significantly expanded the category of receivers by including new technologies such as Wi-Fi, V2X, navigation, and more.
The out-of-the-box deskjob for Elyan
This is our new colleague, Elyan Burnett. He challenged us by asking if we could create a job for him where he could combine his theoretical knowledge with engineering in our workshop.
Bigger, faster and more precise on our new welding tables
This is the first 4,0 by 4,2 metres sliding door our specialists welded on our new welding tables. Why is that such a big deal? We asked the man on the right, Gerco van Diemen.
Proper grounding of RF-shielded rooms
When Michael Faraday invented his ‘Faraday Cage’ at the end of the 19th century, he could never have imagined how important his invention would become in today’s electrical engineering world. This is very important because for EMC measuring rooms, MRI and TEMPEST/EMP applications, his invention is still indispensable for protecting equipment from outside radiation effects. But not only that. The ‘Faraday cage’ also prevents important data used at data centres or military installations from being captured through surveillance and eavesdropping. Connecting the RF-shielded room to a high-quality ground is necessary for optimal functionality in almost all applications. We asked expert Jan Kappert, to explain why it is essential and how to prepare it.
Tetris Puzzling for Volkswagen Infotainment
Is it possible to build nine RF-shielded test rooms over three floors in a building full of columns? Read how our designer, Britt Lise Links, made a Tetris-like solution for our client, Volkswagen Infotainment GmbH. “There are many challenges in this project. First, I had to fit six new shield rooms on the second floor of this building, keeping doors away from the many columns and enough space to move between the different rooms. For this project, all test rooms must be wheelchair accessible, so the standard 50mm door threshold is not an option. Each shield room must have a window to keep a visual connection with the inside. These RF-shielded windows are covered with a thin maze of copper to maintain the Faraday cage, so visibility is reasonable.”
DIY Chambers for antenna testing
Did you know a Faraday cage is only required for 20% of antenna measurement facilities? In order to reduce costs for the other 80% of the users, we developed the DIY chamber: a cost-efficient do-it-yourself solution for antenna measurements.