NDLI: P2N-7 Wide Bandwidth SAW Chirp Filters with Improved Magnitude Response

Content Provider	IEEE Xplore Digital Library
Author	Junjie Gong Yuxing Zhang Xianwen Zhou Hartogh, P.
Copyright Year	2006
Description	Author affiliation: Inst. of Acoust., Chinese Acad. of Sci., Beijing (Junjie Gong; Yuxing Zhang; Xianwen Zhou)
Abstract	Three wideband SAW chirp filters are reported. They are 1 GHz central frequency with 400 MHz bandwidth and 10 mus chirp duration, 1.5 GHz central frequency with 600 MHz bandwidth and 10 mus chirp duration, and 2 GHz central frequency with 800 MHz bandwidth and 6 mus chirp duration, respectively. With our regular design and fabrication, the passband has a 2~3 dB peaking at the high frequency end for these wide bandwidth chirp filters. To suppress the peaking, some extra grooves are inserted before the reflective gratings, which partially diffracts the acoustic wave at the peaking frequency. This method has been proven effective and has little degradation on other performances. A chirp transform spectrometer (CTS) based on the 400 MHz bandwidth chirp filters has been built and the spectrum output shows good compressed pulse
Starting Page	1895
Ending Page	1898
File Size	268033
Page Count	4
File Format	PDF
ISBN	1424402018
ISSN	10510117
DOI	10.1109/ULTSYM.2006.478
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandwidth Surface acoustic waves Chirp Frequency Wideband Fabrication Passband Band pass filters Diffraction gratings Acoustic diffraction
Content Type	Text
Resource Type	Article

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