# US 2017/0289931 A1 · Method and system for processing a radio frequency (rf) signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0289931 A1 - Document ID: US20170289931A1 - Status: Published application - Kind: A1 - Application number: 15/087,468 - Filed: 2016-03-31 - Published: 2017-10-05 - Earliest claimed: 2016-03-31 - Assignees: NXP B.V. - Applicants: NXP B.V. - Inventors: Stefan Mendel; Michael Pieber - Web page: https://patentgrep.com/patent/US20170289931A1 ## CPC - H04W 52/52: using AGC [Automatic Gain Control] circuits or amplifiers - H04B 17/318: Received signal strength - H04B 17/26: using historical data, averaging values or statistics - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Embodiments of a method and a system for processing a radio frequency (RF) signal are disclosed. In an embodiment, a method for processing an RF signal involves down-converting the RF signal into a converted signal, obtaining a received signal strength indicator (RSSI) value based on an amplitude of the RF signal, and amplifying the converted signal based on the RSSI value. ## Claims ### Claim 1 A method for processing a radio frequency (RF) signal, the method comprising: down-converting an RF signal into a converted signal using a down-converter; obtaining a received signal strength indicator (RSSI) value based on an amplitude of the RF signal using an RSSI device; amplifying the converted signal based on the RSSI value using an amplifier; and freezing a gain of the amplifier if data reception is detected. ### Claim 2 (depends on 1) The method of claim 1, further comprising controlling the gain of the amplifier based on the RSSI value, wherein amplifying the converted signal based on the RSSI value comprises amplifying the converted signal using the amplifier according to the gain of the amplifier. ### Claim 3 (depends on 2) The method of claim 2, wherein controlling the gain of the amplifier based on the RSSI value comprises switching the gain of the amplifier between a plurality of predefined gain values based on the RSSI value. ### Claim 4 (depends on 2) The method of claim 2, wherein controlling the gain of the amplifier based on the RSSI value comprises: comparing the RSSI value with a threshold; and switching the gain of the amplifier if the RSSI value is larger than or smaller than the threshold. ### Claim 5 (depends on 1) The method of claim 1, wherein obtaining the RSSI value based on the amplitude of the RF signal comprises measuring the amplitude of the RF signal in a first signal path that is in parallel with a second signal path, and wherein converting the RF signal into the converted signal comprises converting the RF signal into the converted signal in the second signal path. ### Claim 6 (depends on 5) The method of claim 5, wherein amplifying the converted signal based on the RSSI value comprises amplifying the converted signal based on the RSSI value in the second signal path. ### Claim 7 (depends on 1) The method of claim 1, wherein the RSSI value comprises a number. ### Claim 8 (depends on 1) The method of claim 1, wherein the RSSI value has a non-linear relationship with the amplitude of the RF signal. ### Claim 9 (depends on 1) The method of claim 1, wherein converting the RF signal into the converted signal comprises converting the RF signal into a baseband signal. ### Claim 10 (depends on 1) The method of claim 1, wherein obtaining the RSSI value based on the amplitude of the RF signal comprises obtaining the RSSI value based on an amplitude of the converted signal. ### Claim 11 A system for processing a radio frequency (RF) signal, the system comprising: a down-converter configured to convert the RF signal into a converted signal; a received signal strength indicator (RSSI) device configured to obtain an RSSI value based on an amplitude of the RF signal; an amplifier configured to amplify the converted signal based on the RSSI value; and an amplifier control device configured to freeze a gain of the amplifier if data reception is detected. ### Claim 12 (depends on 11) The system of claim 11, wherein the amplifier control device is further configured to control the gain of the amplifier based on the RSSI value, wherein the amplifier is further configured to amplify the converted signal according to the gain. ### Claim 13 (depends on 12) The system of claim 12, wherein the amplifier control device is further configured to switch the gain of the amplifier between a plurality of predefined gain values based on the RSSI value. ### Claim 14 (depends on 12) The system of claim 12, wherein the amplifier control device is further configured to: compare the RSSI value with a threshold; and switch the gain of the amplifier if the RSSI value is larger than or smaller than the threshold. ### Claim 15 (depends on 11) The system of claim 11, wherein the RSSI device is further configured to measure the amplitude of the RF signal in a first signal path that is in parallel with a second signal path, and wherein the down-converter is further configured to convert the RF signal into the converted signal in the second signal path. ### Claim 16 (depends on 15) The system of claim 15, wherein the amplifier is further configured to amplify the converted signal based on the RSSI value in the second signal path. ### Claim 17 (depends on 11) The system of claim 11, wherein the RSSI value has a non-linear relationship with the amplitude of the RF signal. ### Claim 18 (depends on 11) The system of claim 11, wherein the down-converter is further configured to convert the RF signal into a baseband signal. ### Claim 19 (depends on 11) The system of claim 11, wherein the RSSI device is further configured to obtain the RSSI value based on the amplitude of the converted signal. ### Claim 20 A method for processing a radio frequency (RF) signal, the method comprising: down-converting the RF signal into a converted signal in a first signal path using a down-converter; obtaining a received signal strength indicator (RSSI) value based on an amplitude of the RF signal in a second signal path that is in parallel with the first signal path using an RSSI device, wherein the RSSI value has a non-linear relationship with the amplitude of the RF signal; controlling a gain of an amplifier based on the RSSI value; amplifying the converted signal using the amplifier according to the gain in the second path; and freezing a gain of the amplifier if data reception is detected.