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公开(公告)号：US20220069784A1
公开(公告)日：2022-03-03
申请号：US17522346
申请日：2021-11-09
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jounghyun YIM , Taewan KIM
Abstract: A mixer includes a load portion connected between an input terminal of a first power voltage and an output terminal of the radio frequency transmit signal and configured to adjust a magnitude of the radio frequency transmit signal, a first switching unit connected to an output terminal of the radio frequency transmit signal, and configured to perform a first switching operation in response to a plurality of local oscillation signals, and a second switching unit connected between the first switching unit and an input terminal of a second power voltage, lower than the first power voltage, and configured to perform a second switching operation in response to a plurality of baseband signals, the plurality of local oscillation signals include an I+ baseband signal, an I− baseband signal, a Q+ baseband signal, and a Q− baseband signal, and the second switching unit includes a first branch performing a switching operation under control of the I+ baseband signal and the Q+ baseband signal, a second branch performing a switching operation under control of the I− baseband signal and the Q− baseband signal, a third branch performing a switching operation under control of the Q+ baseband signal and the I− baseband signal, and a fourth branch performing a switching operation under control of the Q− baseband signal and the I+ baseband signal.
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公开(公告)号：US20230026959A1
公开(公告)日：2023-01-26
申请号：US17870119
申请日：2022-07-21
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Taewan KIM , Byung-wook MIN , Hyungyu KIM , Bosung SUH , Kiryong SONG , Jounghyun YIM , Michael CHOI , Youngjoo LEE
Abstract: An attenuator includes: a first transmission line connected between a first terminal and a first node; a second transmission line connected between the first node and a second terminal; a first resistor connected between the first terminal and a ground node; a second resistor connected between the second terminal and the ground node; and a third resistor connected between the first node and the ground node, wherein the first and second resistors each have a resistance that is higher than a resistance of the third resistor.
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公开(公告)号：US20210111678A1
公开(公告)日：2021-04-15
申请号：US16852673
申请日：2020-04-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jounghyun YIM , Taewan KIM
Abstract: A mixer includes a load portion connected between an input terminal of a first power voltage and an output terminal of the radio frequency transmit signal and configured to adjust a magnitude of the radio frequency transmit signal, a first switching unit connected to an output terminal of the radio frequency transmit signal, and configured to perform a first switching operation in response to a plurality of local oscillation signals, and a second switching unit connected between the first switching unit and an input terminal of a second power voltage, lower than the first power voltage, and configured to perform a second switching operation in response to a plurality of baseband signals, the plurality of local oscillation signals include an I+ baseband signal, an I− baseband signal, a Q+ baseband signal, and a Q− baseband signal, and the second switching unit includes a first branch performing a switching operation under control of the I+ baseband signal and the Q+ baseband signal, a second branch performing a switching operation under control of the I− baseband signal and the Q− baseband signal, a third branch performing a switching operation under control of the Q+ baseband signal and the I− baseband signal, and a fourth branch performing a switching operation under control of the Q− baseband signal and the I+ baseband signal.
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