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A New Uniplanar Bandpass Filter using ?g/2 Slotline and ?g/4 Coplanar Waveguide Resonators

Khelifa Hettak, Jean-Philippe Coupez, Éric Rius, S. Toutain

Open publisher page 8 citations

Abstract

This paper describes the design and performance of a new BP filter using λg/2 slotline and λg/4 CPW short-end resonators. A compact circuit, with an optimized geometry of the slotline elements, to reduce radiation loss, has been fabricated and tested. The experimental results with a center frequency of 8 GHz and a bandwidth of about 50% are shown, and compared to the simulation of a simple transmission line electrical model; a very good agreement is obtained between them over a very large bandwidth, as well in the passband as in the stopband.

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What this paper is about

This paper describes the design and performance of a new BP filter using λg/2 slotline and λg/4 CPW short-end resonators. A compact circuit, with an optimized geometry of the slotline elements, to reduce radiation loss, has been fabricated and tested. The experimental results with a center frequency of 8 GHz and a bandwidth of about 50% are shown, and compared to the simulation of a simple transmission line electrical model; a very good agreement is obtained between them over a very large bandwidth, as well in the passband as in the stopband.

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Available abstract

This paper describes the design and performance of a new BP filter using λg/2 slotline and λg/4 CPW short-end resonators. A compact circuit, with an optimized geometry of the slotline elements, to reduce radiation loss, has been fabricated and tested. The experimental results with a center frequency of 8 GHz and a bandwidth of about 50% are shown, and compared to the simulation of a simple transmission line electrical model; a very good agreement is obtained between them over a very large bandwidth, as well in the passband as in the stopband.

Key concepts: Passband, Coplanar waveguide, Resonator, Stopband, Band-pass filter, Bandwidth (computing), Center frequency, Materials science

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