# US 2019/0379099 A1 · Electromagnetic coupler arrangements for multi-frequency power detection, and devices including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379099 A1 - Document ID: US20190379099A1 - Status: Published application - Kind: A1 - Application number: 16/548,999 - Filed: 2019-08-23 - Published: 2019-12-12 - Earliest claimed: 2016-06-22 - Assignees: Skyworks Solutions, Inc. - Applicants: Skyworks Solutions, Inc. - Inventors: Nuttapong Srirattana; David Ryan Story - Web page: https://patentgrep.com/patent/US20190379099A1 ## CPC - H01P 5/18: consisting of two coupled guides, e.g. directional couplers - H04B 1/006: {using switches for selecting the desired band (H04B1/0057 takes precedence)} - H04B 1/0064: {with separate antennas for the more than one band (H04B1/0053 takes precedence)} - H04L 5/0023: {Time-frequency-space} - H04L 5/1461: {Suppression of signals in the return path, i.e. bidirectional control circuits} - H04L 5/001: {the frequencies being arranged in component carriers} - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A coupling methodology and circuit arrangements to provide multi-frequency simultaneous power measurement. In one example, a wireless device front-end apparatus includes a plurality of antenna swap switches each connected to first and second antenna contacts, and a plurality of electromagnetic couplers each having an input port to receive a input signal of a unique frequency, a coupled port that provides a coupled signal based on the input signal, an output port connected to one of the plurality of antenna swap switches, and an isolation port. The apparatus further includes a termination network including a plurality of termination loads, and an output switch network configured to selectively connect the coupled port of each electromagnetic coupler to a coupler output bank to provide the coupled signals at the coupler output bank, and to selectively connect the isolation port of each electromagnetic coupler to one of the plurality of termination loads. ## Claims ### Claim 1 A wireless device front-end apparatus configured for multi-frequency operation using a plurality of antennas, the apparatus comprising: an antenna switch module including a plurality of antenna swap switches, each respective antenna swap switch having first and second antenna contacts for connecting to first and second antennas, respectively, and first and second input ports; a coupler assembly connected to the plurality of antenna swap switches, the coupler assembly including a plurality of electromagnetic couplers corresponding in number to each of the first and second input ports of the plurality of antenna swap switches, each respective electromagnetic coupler having an input port configured to receive an input signal of a unique frequency, a coupled port, an output port connected to one of the first and second input ports of a respective one of the plurality of antenna swap switches, and an isolation port, each respective electromagnetic coupler being configured to provide a coupled signal at the coupled port of the respective electromagnetic coupler responsive to receiving the input signal at the input port; a termination network including a plurality of termination loads; and an output switch network configured to selectively connect the coupled ports of each of the plurality of electromagnetic couplers to a coupler output bank to provide the coupled signals at the coupler output bank, and to selectively connect the isolation ports of each of the plurality of electromagnetic couplers to one of the plurality of termination loads. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein the coupler output bank includes a number of coupler output contacts corresponding to half the number of electromagnetic couplers in the plurality of electromagnetic couplers. ### Claim 3 (depends on 1) The apparatus of claim 1 wherein each of the plurality of antenna swap switches is a double-pole double throw switch and is connected to two of the plurality of electromagnetic couplers. ### Claim 4 (depends on 1) The apparatus of claim 1 wherein the plurality of electromagnetic couplers includes at least four electromagnetic couplers, two of the at least four electromagnetic couplers being configured to receive input signals in a first frequency band, and another two of the at least four electromagnetic couplers being configured to receive input signals in a second frequency band higher than the first frequency band, the first and second frequency bands being non-overlapping in frequency. ### Claim 5 (depends on 4) The apparatus of claim 4 wherein the antenna switch module further includes a first diplexer connected between the plurality of antenna swap switches and the first antenna contact, and a second diplexer connected between the plurality of antenna swap switches and the second antenna contact. ### Claim 6 (depends on 4) The apparatus of claim 4 wherein the plurality of electromagnetic couplers further includes an additional pair of electromagnetic couplers configured to receive input signals in a third frequency band different from the first and second frequency bands. ### Claim 7 (depends on 6) The apparatus of claim 6 wherein the antenna switch module further includes a first triplexer connected between the plurality of antenna swap switches and the first antenna contact, and a second triplexer connected between the plurality of antenna swap switches and the second antenna contact. ### Claim 8 (depends on 1) The apparatus of claim 1 wherein each termination load of the plurality of termination loads has an adjustable impedance. ### Claim 9 (depends on 8) The apparatus of claim 8 wherein each termination load of the plurality of termination loads includes a plurality of switchable passive impedance elements, the plurality of switchable passive impedance elements including at least one resistive element and one or more capacitive or inductive elements. ### Claim 10 (depends on 1) The apparatus of claim 1 wherein each of the plurality of electromagnetic couplers is bi-directional, and wherein the output switch network is further configured to switch operation of the plurality of electromagnetic couplers between a forward power detection mode and a reverse power detection mode. ### Claim 11 A wireless device comprising: first and second antennas; a transceiver configured to produce a plurality of input signals each having a unique frequency; a power amplifier module configured to receive and amplify the plurality of input signals from the transceiver to produce a plurality of amplified input signals; an antenna switch module including a plurality of antenna swap switches, each respective antenna swap switch having first and second antenna contacts coupled to the first and second antennas, respectively, and first and second input ports; a plurality of electromagnetic couplers connected between the power amplifier module and the antenna switch module, the plurality of electromagnetic coupler corresponding in number to each of the first and second input ports of the plurality of antenna swap switches, each respective electromagnetic coupler of the plurality of electromagnetic couplers having an input port configured to receive a respective amplified input signal of the plurality of amplified input signals from the power amplifier module, a coupled port, an output port connected to one of the first and second input ports of a respective one of the plurality of swap switches, and an isolation port, each electromagnetic coupler being configured to provide a coupled signal at the coupled port a coupled signal responsive to receiving the respective amplified input signal at the input port; a termination network including a plurality of termination loads; and an output switch network configured to selectively connect the coupled ports of each of the plurality of electromagnetic couplers to a coupler output bank to provide the coupled signals at the coupler output bank, and to selectively connect the isolation ports of each of the plurality of electromagnetic couplers to one of the plurality of termination loads. ### Claim 12 (depends on 11) The wireless device of claim 11 further comprising a sensor module coupled to the coupler output bank and configured to receive and process the coupled signals. ### Claim 13 (depends on 11) The apparatus of claim 11 wherein the coupler output bank includes a number of coupler output contacts corresponding to half the number of electromagnetic couplers in the plurality of electromagnetic couplers. ### Claim 14 (depends on 11) The apparatus of claim 11 wherein each of the plurality of antenna swap switches is a double-pole double throw switch and is connected to two of the plurality of electromagnetic couplers. ### Claim 15 (depends on 11) The apparatus of claim 11 wherein the plurality of electromagnetic couplers includes at least four electromagnetic couplers, two of the at least four electromagnetic couplers being configured to receive amplified input signals in a first frequency band, and another two of the at least four electromagnetic couplers being configured to receive amplified input signals in a second frequency band higher than the first frequency band, the first and second frequency bands being non-overlapping in frequency. ### Claim 16 (depends on 15) The apparatus of claim 15 wherein the antenna switch module further includes a first diplexer connected between the plurality of antenna swap switches and the first antenna contact, and a second diplexer connected between the plurality of antenna swap switches and the second antenna contact. ### Claim 17 (depends on 15) The apparatus of claim 15 wherein the plurality of electromagnetic couplers further includes an additional pair of electromagnetic couplers configured to receive amplified input signals in a third frequency band different from the first and second frequency bands. ### Claim 18 (depends on 17) The apparatus of claim 17 wherein the antenna switch module further includes a first triplexer connected between the plurality of antenna swap switches and the first antenna contact, and a second triplexer connected between the plurality of antenna swap switches and the second antenna contact. ### Claim 19 (depends on 11) The apparatus of claim 11 wherein each termination load of the plurality of termination loads has an adjustable impedance. ### Claim 20 (depends on 19) The apparatus of claim 19 wherein each termination load of the plurality of termination loads includes a plurality of switchable passive impedance elements, the plurality of switchable passive impedance elements including at least one resistive element and one or more capacitive or inductive elements.