Hi Charles,
Why not flip it around? The circuit under your shield is an antenna which will be as good at receiving as transmitting. Illuminate the circuit with a known field intensity (radiated RF immunity test IEC 61000-4-3 for example) and measure the noise voltage at the key point on the circuit (RF connector). If you are still working on satellite tuners then presumably you are worried about in-band signals? Generating fields in the low GHz with a decent spec of signal generator, a horn antenna, and reducing the distance could work, even in a non shielded environment. Calibrating field strength would need maths or an electric field probe at the required distance. All the best James James Pawson Managing Director & EMC Problem Solver Unit 3 Compliance Ltd EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy <http://www.unit3compliance.co.uk/> www.unit3compliance.co.uk | <mailto:[email protected]> [email protected] +44(0)1274 911747 | +44(0)7811 139957 2 Wellington Business Park, New Lane, Bradford, BD4 8AL Registered in England and Wales # 10574298 Office hours: Every morning my full attention is on consultancy, testing, and troubleshooting activities for our customers’ projects. I’m contactable between 1300h to 1730h from Monday to Friday. For inquiries, bookings, and testing updates please send us an email on [email protected] <mailto:[email protected]> or call 01274 911747. Our lead times for testing and consultancy are typically 4-5 weeks. From: Chas Grasso <[email protected]> Sent: Friday, July 21, 2023 8:39 PM To: [email protected] Subject: [PSES] Simulation of signal source under a pwb shield Hello experts and gurus!! I need to simulate the performance of a BLS (board level shield) and I am considering using the IEEE Std 2716-2022 IEEE Guide for the Characterization of the Effectiveness of Printed Circuit Board Level Shielding document. This document is however an adaptation of the methods of evaluating gaskets rather than a focused guide on BLS performance. Question: Does anyone have experience using this Guide as intended for a BLS solution evaluation? Another Question: Would someone guide me to a paper or experiment that shows a decent correlation of a simulated source in a BLS versus actual measurements ? Here's my concern: The problem of how to internally source a signal for simulation and measurement seems deceptively simple. Just put an antenna on the inside of the shield - right? Well, no. My concern is that the addition of the shield compromises the antenna characteristics and so inadvertently this results in better (or worse) results. With eager anticipation and appreciation for your help with this!! -- Charles Grasso Dish Technologies (c) 303-204-2974 (w) 303-706-5467 (h) 303-317-5530 (e ) [email protected] <mailto:[email protected]> (e2) [email protected] <mailto:[email protected]> _____ This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ <https://www.mail-archive.com/[email protected]/%20> Website: https://ewh.ieee.org/soc/pses/ <https://ewh.ieee.org/soc/pses/> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) <https://ewh.ieee.org/soc/pses/list.html> List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] <mailto:[email protected]> Rick Linford at: [email protected] <mailto:[email protected]> For policy questions, send mail to: Jim Bacher at: [email protected] <mailto:[email protected]> _____ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC <https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1> &A=1 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
