# US 2017/0288646 A1 · High-frequency switch module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288646 A1 - Document ID: US20170288646A1 - Status: Published application - Kind: A1 - Application number: 15/624,874 - Filed: 2017-06-16 - Published: 2017-10-05 - Earliest claimed: 2015-02-05 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Takanori UEJIMA - Web page: https://patentgrep.com/patent/US20170288646A1 ## CPC - H03H 11/04: Frequency selective two-port networks - H01F 27/2804: {Printed windings} - H03H 7/0115: {comprising only inductors and capacitors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence)} - H03H 9/64: using surface acoustic waves - H04B 1/00: Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission - H04B 1/40: Circuits - H04B 1/48: in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)} - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H04B: TRANSMISSION ## Abstract A high-frequency switch module includes a switch element, a filter element, an inductor, and first and second transmission conductors. The switch element includes a common terminal and first and second selected terminals selectively connected to the common terminal. The first transmission conductor connects the first selected terminal and a SAW filter of the filter element. The second transmission conductor connects the second selected terminal and a SAW filter of the filter element. The inductor is connected between the first and second transmission conductors. A separation distance between at least a portion of the first transmission conductor and a portion of the second transmission conductor is shorter than a separation distance between a land conductor of the first selected terminal and a land conductor of the second selected terminal, and the transmission conductors are capacitively coupled. ## Claims ### Claim 1 A high-frequency switch module comprising: a switch element including a common terminal and first and second selected terminals selectively connected to the common terminal; a filter element that is connected to the first selected terminal and the second selected terminal and that includes a common output terminal; a first transmission conductor that connects the first selected terminal and the filter element; a second transmission conductor that connects the second selected terminal and the filter element; and an inductor connected between the first transmission conductor and the second transmission conductor; wherein a separation distance between at least a portion of the first transmission conductor and a portion of the second transmission conductor is shorter than a separation distance between the first selected terminal and the second selected terminal. ### Claim 2 (depends on 1) The high-frequency switch module according to claim 1, further comprising: a circuit board on which the switch element, the filter element, and the inductor are mounted and in which the first transmission conductor and the second transmission conductor are provided; wherein the first transmission conductor and the second transmission conductor are provided at different layers of the circuit board; and when the circuit board is viewed in plan view, the first transmission conductor and the second transmission conductor at least partially overlap one another. ### Claim 3 (depends on 2) The high-frequency switch module according to claim 2, wherein the portions of the first transmission conductor and the second transmission conductor that overlap one another have different widths. ### Claim 4 (depends on 2) The high-frequency switch module according to claim 2, wherein when the circuit board is viewed in plan view, the first transmission conductor and the second transmission conductor only partially overlap one another. ### Claim 5 (depends on 2) The high-frequency switch module according to claim 2, wherein the portions of the first transmission conductor and the second transmission conductor that overlap one another are parallel or substantially parallel to one another. ### Claim 6 (depends on 1) The high-frequency switch module according to claim 1, wherein the inductor is a spiral-shaped conductor pattern provided in the circuit board; and when the circuit board is viewed in plan view, a portion of the spiral-shaped conductor pattern overlaps with at least a portion of the first transmission conductor. ### Claim 7 (depends on 6) The high-frequency switch module according to claim 6, wherein the portion of the spiral-shaped conductor pattern and the portion of the first transmission conductor that overlap have different widths. ### Claim 8 (depends on 6) The high-frequency switch module according to claim 6, wherein a ground conductor provided within the circuit board does not overlap with an opening in a central portion of the spiral-shaped conductor pattern. ### Claim 9 (depends on 1) The high-frequency switch module according to claim 1, wherein the filter element includes at least two surface acoustic wave filters. ### Claim 10 (depends on 9) The high-frequency switch module according to claim 9, wherein the at least two surface acoustic wave filters have different pass bands from one another. ### Claim 11 (depends on 9) The high-frequency switch module according to claim 9, wherein the at least two surface acoustic wave filters are connected to a front end terminal of the high-frequency switch module. ### Claim 12 (depends on 1) The high-frequency switch module according to claim 1, wherein the switch element is a SPnT switch. ### Claim 13 (depends on 12) The high-frequency switch module according to claim 12, wherein the SPnT switch includes semiconductor switches. ### Claim 14 (depends on 1) The high-frequency switch module according to claim 1, further comprising a capacitor connected between the first transmission conductor and the second transmission conductor. ### Claim 15 (depends on 14) The high-frequency switch module according to claim 14, wherein the inductor and the capacitor define an LC parallel resonant circuit.