# US 12,113,556 B2 · Devices and methods for radio frequency front end systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,556 B2 - Document ID: US12113556B2 - Status: Granted - Kind: B2 - Application number: 18/478,733 - Filed: 2023-09-29 - Published: 2024-04-04 - Granted: 2024-10-08 - Earliest claimed: 2017-03-24 - Assignees: Skyworks Solutions, Inc. - Applicants: Skyworks Solutions, Inc. - Inventors: John Chi-Shuen Leung - Web page: https://patentgrep.com/patent/US12113556B2 ## CPC - H04B 1/0064: {with separate antennas for the more than one band (H04B1/0053 takes precedence)} - H04B 1/0053: {with common antenna for more than one band} - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04B 7/0825: {with main and with auxiliary or diversity antennas} - H04B: TRANSMISSION ## Abstract A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency range greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency range greater than that of the second mid band receive signal. ## Claims ### Claim 1 A method of front end signal processing in a wireless device, the method comprising: providing a high band transmit signal to a first primary antenna using a first transmit and receive module; receiving a first high band receive signal and a first mid band receive signal from the first primary antenna using the first transmit and receive module; providing a mid band transmit signal to a second primary antenna using a second transmit and receive module; receiving a second mid band receive signal and a second high band receive signal from the second primary antenna using the second transmit and receive module; providing a low band transmit signal to the second primary antenna using a third transmit and receive module; receiving a low band receive signal from the second primary antenna using the third transmit and receive module; receiving a first high band diversity receive signal and a first mid band diversity receive signal from a first diversity antenna using a first diversity module; receiving a second mid band diversity receive signal and a second high band diversity receive signal from a second diversity antenna using a second diversity module; and receiving one or more low band diversity receive signals from the second diversity antenna using a third diversity module. ### Claim 2 (depends on 1) The method of claim 1 further comprising providing downlink multi-input and multi-output communications using the first high band receive signal and the second high band receive signal. ### Claim 3 (depends on 1) The method of claim 1 further comprising providing downlink multi-input and multi-output communications using the first mid band receive signal and the second mid band receive signal. ### Claim 4 (depends on 1) The method of claim 1 further comprising providing carrier aggregation using the first high band receive signal and the first mid band receive signal. ### Claim 5 (depends on 1) The method of claim 1 further comprising providing carrier aggregation using the second mid band receive signal and the second high band receive signal. ### Claim 6 (depends on 1) The method of claim 1 wherein the first transmit and receive module includes a first plurality of high band signal paths and a first plurality of mid band signal paths that are switch coupled to the first primary antenna. ### Claim 7 (depends on 6) The method of claim 6 wherein the second transmit and receive module includes a second plurality of high band signal paths and a second plurality of mid band signal paths that are switch coupled to the second primary antenna. ### Claim 8 (depends on 1) The method of claim 1 wherein the first transmit and receive module is electrically coupled to the first primary antenna without an intervening multiband handling element. ### Claim 9 (depends on 1) The method of claim 1 wherein a diplexer is electrically coupled between the second transmit and receive module and the second primary antenna. ### Claim 10 (depends on 9) The method of claim 9 wherein the third transmit and receive module is electrically coupled to the second primary antenna via the diplexer. ### Claim 11 (depends on 1) The method of claim 1 wherein the first diversity module is electrically coupled to the first diversity antenna without an intervening multiband handling element, and wherein a diversity diplexer is electrically coupled between the second diversity module and the second diversity antenna, the third diversity module electrically coupled to the second diversity antenna via the diversity diplexer. ### Claim 12 (depends on 1) The method of claim 1 wherein the first diversity module includes a high band output switch configured to receive a plurality of high band diversity receive signals including the first high band diversity receive signal and the second high band diversity receive signal, the high band output switch further configured to provide a transceiver with a selected high band diversity receive signal. ### Claim 13 (depends on 1) The method of claim 1 wherein the second diversity module includes a mid band output switch configured to receive a plurality of mid band diversity receive signals including the first mid band diversity receive signal and the second mid band diversity receive signal, the mid band output switch further configured to provide a transceiver with a selected mid band diversity receive signal. ### Claim 14 (depends on 1) The method of claim 1 wherein the third diversity module includes a low band output switch configured to receive a plurality of low band diversity receive signals, the low band output switch further configured to provide a transceiver with a selected low band diversity receive signal. ### Claim 15 (depends on 1) The method of claim 1 wherein the mid band transmit signal, the first mid band receive signal, and the second mid band receive signal have frequencies between 1 GHz and 2.3 GHZ, and the high band transmit signal, the first high band receive signal, and the second high band receive signal have frequencies greater than 2.3 GHZ. ### Claim 16 (depends on 1) The method of claim 1 further comprising providing four-by-four receive multi-input and multi-output communications using the first transmit and receive module, the second transmit and receive module, the first diversity module, and the second diversity module. ### Claim 17 A wireless device comprising: a first primary antenna and a second primary antenna; a first diversity antenna and a second diversity antenna; a first transmit and receive module configured to provide a high band transmit signal to the first primary antenna and to receive a first high band receive signal and a first mid band receive signal from the first primary antenna; a second transmit and receive module configured to provide a mid band transmit signal to the second primary antenna and to receive a second mid band receive signal and a second high band receive signal from the second primary antenna; a third transmit and receive module configured to provide a low band transmit signal to the second primary antenna and to receive a low band receive signal from the second primary antenna; a first diversity module configured to receive a first high band diversity receive signal and a first mid band diversity receive signal from the first diversity antenna; a second diversity module configured to receive a second mid band diversity receive signal and a second high band diversity receive signal from the second diversity antenna; and a third diversity module configured to receive a low band diversity receive signal from the second diversity antenna. ### Claim 18 (depends on 17) The wireless device of claim 17 wherein the first transmit and receive module is electrically coupled to the first primary antenna without an intervening multiband handling element. ### Claim 19 (depends on 17) The wireless device of claim 17 further comprising a diplexer electrically coupled between the second transmit and receive module and the second primary antenna. ### Claim 20 (depends on 19) The wireless device of claim 19 wherein the third transmit and receive module is electrically coupled to the second primary antenna via the diplexer.