Op ’t Land, Sjoerd École supérieure d électronique de l Ouest (ESEO) - Department of Electronics, France , Perdriau, Richard École supérieure d électronique de l Ouest (ESEO) - Department of Electronics, France , Ramdani, Mohamed École supérieure d électronique de l Ouest (ESEO) - Department of Electronics, France

Low-cost 0603 SMD Impedance Measurement Fixture

15208

For microwave designs and when designing forelectromagnetic compatibility (EMC), we need competent modelsof passive surface mount devices (SMDs), that is: resistors,capacitors and inductors. Such models are not always availableor trustworthy, so we sometimes need to measure the impedanceof these components ourselves. Appropriate measurement equipmentexists, but often exceeds the available budget.In this paper, we design and build a low-cost test fixturethat allows to measure the impedance of a 0603 SMD with avector network analyser (VNA) or impedance analyser. Differentfixture compensation methods are compared; a Short-Open-Load(SOL) calibration seems to be reliable up to about 12 GHz. Theimpedance precision depends on the used analyser.

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SMD , impedance , measurement , calibration , compensation , microwave , EMC

Mediterranean Telecommunications Journal

43