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Publication
Featured researches published by Roger W. Whatmore.
Journal of the Acoustical Society of America | 2007
Qingxin Su; Paul B. Kirby; Eiju Komuro; Masaaki Imura; Roger W. Whatmore
Multiple thin film bulk acoustic resonators (10, 11) configured in series (10) and parallel (11) within a coplanar waveguide line structure provides a compact ladder filter. The resonators (10, 11) are formed over an opening (28) in a substrate (20) and connected to associated circuitry by one or more transmission lines formed on the substrate (20). The arrangement of the resonators (10, 11) between the ground and signal lines of a coplanar line structure provides a means of minimising the area of the filter. Embedding a ladder filter within the coplanar transmission line structure eliminates the need for wire bonds, thus simplifying fabrication. Embodiments for 2×2, and hither order filters are described.
Archive | 2001
Roger W. Whatmore; Paul B. Kirby; Qingxin Su; Eiju Komuro
Archive | 2003
Eiju Komuro; Masaaki Imura; Katsuhiko Gunji; Taku Takeishi; Roger W. Whatmore; Joseph Edward Albert Southin
Archive | 2003
Eiju Komuro; Masaaki Imura; Qingxin Su; Paul B. Kirby; Roger W. Whatmore
Archive | 2002
Katsuhiko Gunji; Masaaki Imura; Eiki Komuro; Joseph Edward Albert Southin; Taku Takeishi; Roger W. Whatmore; ジョセフ エドワード アルバート ソーシン; ロジャー ウイリアム ホワットモア; 伊村 正明; 小室 栄樹; 武石 卓; 郡司 勝彦
Archive | 2001
Roger W. Whatmore; Paul B. Kirby; Qingxin Su; Eiju Komuro
Archive | 2001
Roger W. Whatmore; Paul B. Kirby; Qingxin Su; Eiju Komuro
Archive | 2001
Roger W. Whatmore; Eiju Komuro
Archive | 2001
Eiju Komuro; Roger W. Whatmore
Archive | 2001
Masaaki Imura; Paul B. Kirby; Eiju Komuro; Qing-Xin Su; Roger W. Whatmore
