access icon free Experimental characterisations of thin film transmission line losses

New frequency-variant losses of planar thin film transmission lines are experimentally investigated in a broad frequency range. The frequency-variant transmission line parameters are accurately determined in the measured frequency band (i.e. from 40 MHz to 50 GHz). Then, it is shown that there are three critical frequencies that characterise the loss mechanism of thin film transmission lines. The conventional skin-effect model is not accurate in thin and fine transmission lines.

Inspec keywords: thin film devices; losses; transmission lines

Other keywords: frequency range; planar thin film transmission lines; loss mechanism characterization; frequency band measurement; bandwidth 40 MHz to 50 GHz; experimental characterisations; frequency-variant transmission line parameters; frequency-variant losses

Subjects: Thin film circuits; Transmission line links and equipment; Transmission line theory

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