A compact, high performance, semi-lumped, low-pass filter fabricated with a standard air bridge process

Hettak, K., Stubbs, M. G., Elgaid, K. and Thayne, G. 2006. A compact, high performance, semi-lumped, low-pass filter fabricated with a standard air bridge process. Presented at: 35th European Microwave Conference, Paris, France, 4-6 October 2005. 2005 European Microwave Conference. IEEE, 10.1109/EUMC.2005.1608782

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Abstract

A compact, semi-lumped, low-pass filter with a sharp cutoff and a very wide stopband is presented. It is composed of a cascade of elevated low-loss lumped inductors and ultra-low impedance thin film microstrip line (TFMS) sections made using a standard air bridge process. This new type of TFMS is suspended using air bridges providing a small air gap between the signal line and ground metal - "Air TFMS". This results in a wide stopband at high frequency and, when combined with high quality factor suspended inductors, also gives a sharp cutoff response at low frequency. The combined characteristics of these elements make for excellent low-pass filter performance.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	2960055128
Last Modified:	16 Mar 2020 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/122550

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