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公开(公告)号：US09729192B2
公开(公告)日：2017-08-08
申请号：US15159072
申请日：2016-05-19
Applicant: BROADCOM CORPORATION
Inventor： Matteo Conta , Seema Butala Anand
CPC classification number: H04B1/525 , H03F1/303 , H03F3/193 , H03F3/245 , H03F3/45179 , H03F2200/255 , H03F2200/294 , H03F2200/451 , H03F2203/45172
Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.
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公开(公告)号：US20160261305A1
公开(公告)日：2016-09-08
申请号：US15159072
申请日：2016-05-19
Applicant: BROADCOM CORPORATION
Inventor： Matteo Conta , Seema Butala Anand
CPC classification number: H04B1/525 , H03F1/303 , H03F3/193 , H03F3/245 , H03F3/45179 , H03F2200/255 , H03F2200/294 , H03F2200/451 , H03F2203/45172
Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.
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公开(公告)号：US20150094117A1
公开(公告)日：2015-04-02
申请号：US14145335
申请日：2013-12-31
Applicant: BROADCOM CORPORATION
Inventor： Matteo Conta , Seema Butala Anand
CPC classification number: H04B1/525 , H03F1/303 , H03F3/193 , H03F3/245 , H03F3/45179 , H03F2200/255 , H03F2200/294 , H03F2200/451 , H03F2203/45172
Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.
Abstract translation: 收发器或射频前端采用在接地路径中具有低损耗发射/接收（T / R）开关电路的变压器。 在各种实施例中，功率放大器的差分输出耦合到变压器的第一绕组，而低噪声放大器的输入通过匹配电感耦合到变压器的第二侧。 可以是薄氧化物CMOS晶体管的T / R开关电路耦合在变压器的第二侧和地之间。 在操作中，可以在功率放大器的发射模式操作期间使能T / R开关电路，使得在低噪声放大器的输入处提供到地的低阻抗路径，从而保护它免受由低噪声放大器产生的高电压摆动 功率放大器。
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公开(公告)号：US09379764B2
公开(公告)日：2016-06-28
申请号：US14145335
申请日：2013-12-31
Applicant: BROADCOM CORPORATION
Inventor： Matteo Conta , Seema Butala Anand
CPC classification number: H04B1/525 , H03F1/303 , H03F3/193 , H03F3/245 , H03F3/45179 , H03F2200/255 , H03F2200/294 , H03F2200/451 , H03F2203/45172
Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.
Abstract translation: 收发器或射频前端采用在接地路径中具有低损耗发射/接收（T / R）开关电路的变压器。 在各种实施例中，功率放大器的差分输出耦合到变压器的第一绕组，而低噪声放大器的输入通过匹配电感耦合到变压器的第二侧。 可以是薄氧化物CMOS晶体管的T / R开关电路耦合在变压器的第二侧和地之间。 在操作中，可以在功率放大器的发射模式操作期间使能T / R开关电路，使得在低噪声放大器的输入处提供到地的低阻抗路径，从而保护它免受由低噪声放大器产生的高电压摆动 功率放大器。
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