# US 2017/0288641 A1 · Baw filter and method for manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288641 A1 - Document ID: US20170288641A1 - Status: Published application - Kind: A1 - Application number: 15/420,722 - Filed: 2017-01-31 - Published: 2017-10-05 - Earliest claimed: 2016-04-04 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Han Tae KIM; Hyun Min HWANG; Jong Beom KIM; Seung Joo SHIN - Web page: https://patentgrep.com/patent/US20170288641A1 ## CPC - H03H 9/46: Filters (multiple-port electromechanical filters H03H9/70) - H03H 9/706: {Duplexers} - H03H 3/007: for the manufacture of electromechanical resonators or networks - H03H 9/0514: {consisting of mounting pads or bumps} - H03H 9/1007: {for bulk acoustic wave [BAW] devices} - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) ## Abstract A bulk acoustic wave (BAW) filter includes: a substrate including a first mounting region and a second mounting region which are spaced apart from each other; a first fixing member disposed adjacent to the first mounting region; a second fixing member disposed adjacent to the second mounting region; a Tx filter mounted on the first mounting region and fixed by the first fixing member; and an Rx filter mounted on the second mounting region and fixed by the second fixing member. ## Claims ### Claim 1 A bulk acoustic wave (BAW) filter comprising: a substrate comprising a first mounting region and a second mounting region which are spaced apart from each other; a first fixing member disposed adjacent to the first mounting region; a second fixing member disposed adjacent to the second mounting region; a Tx filter mounted on the first mounting region and fixed by the first fixing member; and an Rx filter mounted on the second mounting region and fixed by the second fixing member. ### Claim 2 (depends on 1) The BAW filter of claim 1, wherein: the first fixing member fixes two sides of the Tx filter which are not adjacent to each other; and the second fixing member fixes two sides of the Rx filter which are not adjacent to each other. ### Claim 3 (depends on 1) The BAW filter of claim 1, wherein: the first fixing member fixes two corners of the Tx filter which are not adjacent to each other; and the second fixing member fixes two corners of the Rx filter which are not adjacent to each other. ### Claim 4 (depends on 1) The BAW filter of claim 1, wherein: the first fixing member fixes corners of the Tx filter; and the second fixing member fixes corners of the Rx filter. ### Claim 5 (depends on 1) The BAW filter of claim 1, wherein: pads formed on the first mounting region are electrically connected to respective pads on the Tx filter; and pads formed on the second mounting region are electrically connected to respective pads on the Rx filter. ### Claim 6 (depends on 1) The BAW filter of claim 1, wherein: the first fixing member comprises a conductive material; and the Tx filter comprises a first ground electrode formed on a side of the Tx filter and electrically connected to the first fixing member. ### Claim 7 (depends on 1) The BAW filter of claim 1, wherein: the second fixing member includes a conductive material; and the Rx filter comprises a second ground electrode formed on a side of the Rx filter and electrically connected to the second fixing member. ### Claim 8 (depends on 1) The BAW filter of claim 1, further comprising a molding part formed on the substrate and surrounding the Tx filter and the Rx filter. ### Claim 9 (depends on 1) The BAW filter of claim 1, wherein the first fixing member and the second fixing member comprise bodies having a bracket form. ### Claim 10 (depends on 1) The BAW filter of claim 1, wherein the first fixing member and the second fixing member comprise bodies having a rectangular form. ### Claim 11 A method to manufacture a bulk acoustic wave (BAW) filter, the method comprising: preparing a substrate comprising a first mounting region and a second mounting region which are spaced apart from each other, a first fixing member disposed adjacent to the first mounting region, and a second fixing member disposed adjacent to the second mounting region; mounting a Tx filter on the first mounting region such that the Tx filter is fixed by the first fixing member; mounting an Rx filter on the second mounting region such that the Rx filter is fixed by the second fixing member; and performing soldering for the substrate. ### Claim 12 (depends on 11) The method of claim 11, wherein: in the mounting of the Tx filter, the first fixing member fixes two sides of the Tx filter which are not adjacent to each other; and in the mounting of the Rx filter, the second fixing member fixes two sides of the Rx filter which are not adjacent to each other. ### Claim 13 (depends on 11) The method of claim 11, wherein: in the mounting of the Tx filter, the first fixing member fixes two corners of the Tx filter which are not adjacent to each other; and in the mounting of the Rx filter, the second fixing member fixes two corners of the Rx filter which are not adjacent to each other. ### Claim 14 (depends on 11) The method of claim 11, wherein: in the mounting of the Tx filter, the first fixing member fixes all corners of the Tx filter; and in the mounting of the Rx filter, the second fixing member fixes all corners of the Rx filter. ### Claim 15 (depends on 11) The method of claim 11, wherein the performing of the soldering for the substrate comprises: electrically connecting pads on the first mounting region to pads on the Tx filter, by solder; and electrically connecting pads on the second mounting region to pads on the Rx filter, by the solder. ### Claim 16 (depends on 11) The method of claim 11, wherein the performing of the soldering for the substrate comprises: electrically connecting the first fixing member and a first ground electrode, formed on a side of the Tx filter, to each other. ### Claim 17 (depends on 11) The method of claim 11, wherein the performing of the soldering for the substrate comprises: electrically connecting the second fixing member and a second ground electrode, formed on a side of the Rx filter, to each other. ### Claim 18 (depends on 11) The method of claim 11, further comprising forming a molding part on the substrate such that the molding part surrounds the Tx filter and the Rx filter.