https://www.5gtechnologyworld.com/from-design-to-certification-connecting-your-lte-nb-iot-or-m1-module-to-an-antenna/ Covering 5G technology, systems, infrastructure and wireless design and development. Mon, 21 Mar 2022 22:24:19 +0000 hourly 1 https://wordpress.org/?v=6.5.4 https://www.5gtechnologyworld.com/from-design-to-certification-connecting-your-lte-nb-iot-or-m1-module-to-an-antenna/#comment-17093 Tue, 01 Mar 2022 19:28:19 +0000 https://www.5gtechnologyworld.com/?p=18078#comment-17093 Ken,
You see harmonics from DC-DC converters into the several GHz range?

]]> https://www.5gtechnologyworld.com/from-design-to-certification-connecting-your-lte-nb-iot-or-m1-module-to-an-antenna/#comment-17068 Tue, 01 Mar 2022 01:31:03 +0000 https://www.5gtechnologyworld.com/?p=18078#comment-17068 I can’t stress enough to characterize the coupling of digital bus noise and more importantly, on-board DC-DC converters. These sources can easily produce harmonics out to beyond GPS bands. The key is proper PC board design (stack-up, routing and partitioning of functions). Most of my wireless clients manage to get this wrong and end up failing the TIS test.

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