Kikkert, Cornelis Jan (2005) Designing low cost wideband microstrip bandpass filters. In: Proceedings of IEEE TENCON '05 Conference. pp. 1-6. From: Tencon 2005 - 2005 IEEE Region 10, 21 - 24 November 2005, Melbourne, VIC, Australia.

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Abstract

The design of RF filters where the bandwidth is much greater than 10% of the centre frequency is difficult to implement, since conventional filter design techniques such as those for coupled line or interdigital filters are applicable to filters with less than 10% bandwidth. This paper describes a design technique for designing wideband RF filters and illustrates this with the design of a 5 resonator filter with a 50% bandwidth at a centre frequency of 1 GHz. The design technique produces filters with a remarkable accuracy, so that one-iteration filter designs can be produced reliably.

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