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2013•Japanese Journal of Applied PhysicsRequires access

A Configuration of Widely Tunable Surface Acoustic Wave Filter

Masahiro Inaba, Tatsuya Omori, Ken‐ya Hashimoto

Open publisher page 11 citations

Abstract

This paper proposes a configuration of the radio frequency surface acoustic wave (SAW) filter with wide tunability for both the passband width and the center frequency. At first, it is shown how the center frequency and the passband width are adjustable with the VC setting. It is also shown that a flat passband and steep transition bands are realizable when multiple stages are cascaded with mirror inversion. Then, influence ofQfactors is discussed. Finally, two types of tunable filters are designed, and applicability of this filter topology is demonstrated.

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What this paper is about

This paper proposes a configuration of the radio frequency surface acoustic wave (SAW) filter with wide tunability for both the passband width and the center frequency. At first, it is shown how the center frequency and the passband width are adjustable with the VC setting. It is also shown that a flat passband and steep transition bands are realizable when multiple stages are cascaded with mirror inversion. Then, influence ofQfactors is discussed. Finally, two types of tunable filters are designed, and applicability of this filter topology is demonstrated.

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OpenAlex reports 11 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This paper proposes a configuration of the radio frequency surface acoustic wave (SAW) filter with wide tunability for both the passband width and the center frequency. At first, it is shown how the center frequency and the passband width are adjustable with the VC setting. It is also shown that a flat passband and steep transition bands are realizable when multiple stages are cascaded with mirror inversion. Then, influence ofQfactors is discussed. Finally, two types of tunable filters are designed, and applicability of this filter topology is demonstrated.

Key concepts: Passband, Center frequency, Acoustics, Transition band, Filter (signal processing), Band-pass filter, Inversion (geology), Optics

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