Invention Grant
- Patent Title: Flip chip type saw band reject filter design
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Application No.: US14933490Application Date: 2015-11-05
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Publication No.: US09413329B2Publication Date: 2016-08-09
- Inventor: Chunyun Jian
- Applicant: Telefonaktiebolaget L M Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Christopher & Weisberg, P.A.
- Main IPC: H03H9/00
- IPC: H03H9/00 ; H03H9/02 ; H03H3/02 ; H03H9/25 ; H03H9/64

Abstract:
A method and system for providing a surface acoustic wave band reject filter are disclosed. According to one aspect, a surface acoustic wave band reject filter includes a substrate having electrode bars and bonding pads formed on the substrate. The filter further includes at least one die having a side facing the substrate. A plurality of surface acoustic wave resonators are formed on the at least one die formed on the substrate. Solder balls formed on a side of the at least one die facing the substrate are positioned to engage bonding pads on the substrate. The plurality of surface acoustic wave resonators collectively exhibit a band reject filter response.
Public/Granted literature
- US20160056792A1 FLIP CHIP TYPE SAW BAND REJECT FILTER DESIGN Public/Granted day:2016-02-25
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