# US 10,374,850 B2 · Receiver and wireless terminal for signal processing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,850 B2 - Document ID: US10374850B2 - Status: Granted - Kind: B2 - Application number: 15/995,801 - Filed: 2018-06-01 - Published: 2018-09-27 - Granted: 2019-08-06 - Earliest claimed: 2015-01-13 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Young-min Kim; Pil-sung Jang; Thomas Byunghak Cho; Seung-chan Heo - Web page: https://patentgrep.com/patent/US10374850B2 ## CPC - H04L 27/14: Demodulator circuits; Receiver circuits - H03F 1/0205: {in transistor amplifiers} - H03F 1/0277: {Selecting one or more amplifiers from a plurality of amplifiers} - H03F 3/19: with semiconductor devices only - H03F 3/193: with field-effect devices (H03F3/195 takes precedence) - H03F 3/72: Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal - H04B 1/0053: {with common antenna for more than one band} - H04B 1/16: Circuits - H03F 2200/111: the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not - H03F 2200/165: A filter circuit coupled to the input of an amplifier - H03F 2200/451: the amplifier being a radio frequency amplifier - H03F 2203/7209: the gated amplifier being switched from a first band to a second band - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 88/02: Terminal devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H03F: AMPLIFIERS - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless terminal is provided that includes a first receiver that includes a first input unit configured to perform impedance matching on a first reception signal to output a first RF input signal. A first amplification unit is configured to amplify the first RF input signal to output one or more first RF output signals in an inter-band CA mode and an intra-band CA mode. A first output unit is configured to down-convert at least one of the one or more first RF output signals to a baseband. A second receiver includes a second output unit. In the intra-band CA mode, the one or more first RF output signals includes a first RF signal and a second RF signal, and the first amplification unit is further configured to provide the first output unit with the first RF signal and provide the second output unit with the second RF signal. ## Claims ### Claim 1 A wireless terminal comprising: a first receiver comprising: a first input unit configured to perform impedance matching on a first reception signal to output a first radio frequency (RF) input signal, the first reception signal being obtained by filtering a received signal based on a first frequency band, a first amplification unit configured to amplify the first RF input signal to output one or more first RF output signals in an inter-band carrier aggregation (CA) mode and an intra-band CA mode, and a first output unit configured to down-convert at least one of the one or more first RF output signals to a baseband; and a second receiver comprising a second output unit, wherein, in the intra-band CA mode, the one or more first RF output signals includes a first RF signal and a second RF signal, and the first amplification unit is further configured to provide the first output unit with the first RF signal and provide the second output unit with the second RF signal. ### Claim 2 (depends on 1) The wireless terminal of claim 1, wherein: the first RF signal is down-converted by the first output unit; and the second RF signal is down-converted by the second output unit. ### Claim 3 (depends on 1) The wireless terminal of claim 1, wherein the second receiver further comprises: a second input unit configured to perform impedance matching on a second reception signal to output a second RF input signal, the second reception signal being obtained by filtering the received signal based on a second frequency band; and a second amplification unit configured to amplify the second RF input signal to output one or more second RF output signals in the inter-band CA mode and the intra-band CA mode, and wherein the second output unit is configured to down-convert at least one of the one or more second RF output signals to the baseband. ### Claim 4 (depends on 3) The wireless terminal of claim 3, wherein, in the intra-band CA mode: the one or more second RF output signals includes a third RF signal and a fourth RF signal, and the second amplification unit is further configured to provide the second output unit with the third RF signal and provide the first output unit with the fourth RF signal. ### Claim 5 (depends on 4) The wireless terminal of claim 4, wherein: the third RF signal is down-converted by the second output unit, and the fourth RF signal is down-converted by the first output unit. ### Claim 6 (depends on 3) The wireless terminal of claim 3, wherein, in the inter-band CA mode, where the received signal is modulated based on a first carrier of the first frequency band and a second carrier of the second frequency band: the first amplification unit outputs a single first RF output signal; and the second amplification unit outputs a single second RF output signal. ### Claim 7 (depends on 1) The wireless terminal of claim 1, wherein, in the intra-band CA mode, where the received signal is modulated based on a first carrier and a second carrier of the first frequency band: the first amplification unit outputs the first RF signal corresponding to the first carrier, and amplifies a first internal signal generated from the first RF input signal to output the second RF signal corresponding to the second carrier. ### Claim 8 (depends on 7) The wireless terminal of claim 7, wherein: the first amplification unit comprises a first amplifier and a first sub amplifier, the first sub amplifier being activated in the intra-band CA mode, the first amplifier comprises: a first transistor connected between a first node and a second node, the first transistor including a first gate receiving the first RF input signal; and a second transistor configured to output, to a first output node, the first RF signal, the second transistor including a first source connected to the first node and a first drain of the first transistor; and the first sub amplifier comprises: a third transistor connected between a third node and a fourth node, the third transistor including a second gate receiving the first internal signal from the first node; and a fourth transistor configured to output the second RF signal, the fourth transistor including a second source connected to the third node and a second drain of the third transistor, and a third drain connected to a second output node. ### Claim 9 (depends on 8) The wireless terminal of claim 8, wherein: the first amplifier further comprises a source degeneration inductor connected between the second node and a ground terminal; and the first sub amplifier further comprises a serial feedback resistor connected between the fourth node and the ground terminal. ### Claim 10 (depends on 8) The wireless terminal of claim 8, wherein the first amplifier and the first sub amplifier operate as a cascode amplifiers. ### Claim 11 (depends on 1) The wireless terminal of claim 1, wherein the first RF signal has a same level as that of the second RF signal, and a direct current (DC) current consumed when the first sub amplifier outputs the second RF signal, is smaller than a DC current consumed when the first amplifier outputs the first RF signal corresponding to the first carrier. ### Claim 12 (depends on 1) The wireless terminal of claim 1, wherein, in the intra-band CA mode: the one or more first RF output signals further includes a third RF signal, and the first amplification unit outputs the first RF signal corresponding to the first carrier, and amplifies a first internal signal generated from the first RF input signal to output the second RF signal corresponding to the second carrier and the third RF signal corresponding to a third carrier. ### Claim 13 A wireless terminal comprising: a first receiver comprising: a first input unit configured to perform impedance matching on a first reception signal to output a first radio frequency (RF) input signal, the first reception signal being obtained by filtering a received signal based on a first frequency band, a first amplification unit configured to amplify the first RF input signal to output a first RF output signal corresponding to a first carrier included in the first frequency band, and configured to amplify a first internal signal generated from the first RF input signal to output a second RF output signal corresponding to a second carrier included in the first frequency band when in an intra-band carrier aggregation (CA) mode, and a first output unit configured to down-convert at least one of the first and second RF output signals to a baseband; and a second receiver comprising a second output unit, wherein, in the intra-band CA mode, the first amplification unit is further configured to provide the first output unit with the first RF output signal and provide the second output unit with the second RF out signal. ### Claim 14 (depends on 13) The wireless terminal of claim 13, wherein the second receiver further comprises: a second input unit configured to perform impedance matching on a second reception signal to output a second RF input signal, the second reception signal being obtained by filtering the received signal based on a second frequency band; and a second amplification unit configured to amplify the second RF input signal to output one or more RF output signals in the inter-band CA mode and the intra-band CA mode, and wherein the second output unit is configured to down-convert at least one of the one or more RF output signals to the baseband. ### Claim 15 (depends on 14) The wireless terminal of claim 14, wherein, in the intra-band CA mode: the one or more RF output signals includes a third RF output signal and a fourth RF output signal, and the second amplification unit is further configured to provide the second output unit with the third RF output signal and provide the first output unit with the fourth RF output signal. ### Claim 16 (depends on 14) The wireless terminal of claim 14, wherein, in the inter-band CA mode, where the received signal is modulated based on a first carrier of the first frequency band and a second carrier of the second frequency band: the first amplification unit outputs a single first RF output signal; and the second amplification unit outputs a single RF output signal. ### Claim 17 (depends on 13) The wireless terminal of claim 13, wherein, in the intra-band CA mode, the first internal signal is obtained by amplifying the first RF input signal according to a first gain. ### Claim 18 (depends on 13) The wireless terminal of claim 13, wherein: the first amplification unit comprises a first amplifier and a first sub amplifier, the first sub amplifier being activated in the intra-band CA mode, the first amplifier comprises: a first transistor connected between a first node and a second node, the first transistor including a first gate receiving the first RF input signal; and a second transistor configured to output, to a first output node, the first RF signal, the second transistor including a first source connected to the first node and a first drain of the first transistor; and the first sub amplifier comprises: a third transistor connected between a third node and a fourth node, the third transistor including a second gate receiving the first internal signal from the first node; and a fourth transistor configured to output the second RF signal, the fourth transistor including a second source connected to the third node and a second drain of the third transistor, and a third drain connected to a second output node. ### Claim 19 A wireless terminal comprising: an antenna configured to receive a reception signal transmitted over a long-term evolution advanced (LTE-A) communication network; a filter configured to filter the reception signal based on a plurality of frequency bands; and a plurality of receivers configured to process a filtered signal to generate a baseband signal, wherein the plurality of receivers comprises a first receiver and a second receiver, wherein the first receiver comprises: a first amplifier comprising a first transistor connected between a first node and a second node, the first transistor including a first gate that receives an RF input signal obtained by performing impedance matching on the filtered signal, and a second transistor configured to output a first RF output signal corresponding to a first carrier, the second transistor being larger in size than the first transistor, the second transistor including a first source connected to the first node and a first drain of the first transistor, and the second transistor including a second drain connected to a first output node; a first sub amplifier comprising a third transistor connected between a third node and a fourth node, the third transistor being activated in an intra-band carrier aggregation (CA) mode, and the third transistor including a second gate that receives a first internal signal from the first node, the first sub amplifier further comprising a fourth transistor configured to output a second RF output signal corresponding to a second carrier of a frequency band of the first carrier, the fourth transistor including a second source connected to the third node and a third drain of the third transistor, and the fourth transistor including a fourth drain connected to a second output node; and a first output unit connectable to the first amplifier, and wherein the second receiver comprises a second output unit connectable to the first sub amplifier in the intra-band CA mode. ### Claim 20 (depends on 19) The wireless terminal of claim 19, wherein the second receiver further comprises: a second input unit configured to perform impedance matching on a second reception signal to output a second RF input signal, the second reception signal being obtained by filtering the reception signal based on a second frequency band; and a second amplification unit configured to amplify the second RF input signal received from the second input unit to output one or more second RF output signals in a inter-band CA mode and the intra-band CA mode, wherein the second amplification unit comprises a second amplifier and a second sub amplifier, the second sub amplifier being activated in the intra-band CA mode, and wherein the first output unit is connectable to the second sub amplifier in the intra-band CA mode and the second output unit is connectable to the second amplifier.