公开(公告)号：US20150111514A1

公开(公告)日：2015-04-23

申请号：US14057404

申请日：2013-10-18

Applicant: Silicon Laboratories Inc.

Inventor： Navin Harwalkar ,  Tim Stroud ,  Dan Kasha

IPC: H04B1/12

CPC classification number: H04B1/123 ,  H04B1/18

Abstract: A radio frequency (RF) receiver front end includes an RF attenuator for receiving an RF input signal and a low noise amplifier (LNA). In one form, the LNA provides a differential output signal and includes a first polarity amplifier and a plurality of second polarity amplifiers. The first polarity amplifier has an input terminal coupled to the output of the RF attenuator, an output terminal for providing a first component of the differential RF output signal, and has a first input impedance. Each of the plurality of second polarity amplifiers has an input terminal coupled to the output of said RF attenuator, and an output terminal. The output terminals of said plurality of second polarity amplifiers are coupled together and form a second component of the differential RF output signal. Each of the plurality of second polarity amplifiers has a second input impedance higher than the first input impedance.

Abstract translation: 射频（RF）接收机前端包括用于接收RF输入信号的RF衰减器和低噪声放大器（LNA）。 在一种形式中，LNA提供差分输出信号，并且包括第一极性放大器和多个第二极性放大器。 第一极性放大器具有耦合到RF衰减器的输出的输入端，用于提供差分RF输出信号的第一分量的输出端，并具有第一输入阻抗。 多个第二极性放大器中的每一个具有耦合到所述RF衰减器的输出的输入端和输出端。 所述多个第二极性放大器的输出端子耦合在一起并形成差分RF输出信号的第二分量。 多个第二极性放大器中的每一个具有高于第一输入阻抗的第二输入阻抗。

公开(公告)号：US09178549B2

公开(公告)日：2015-11-03

申请号：US14057404

申请日：2013-10-18

Applicant: Silicon Laboratories Inc.

Inventor： Navin Harwalkar ,  Tim Stroud ,  Dan Kasha

IPC: H04B1/18 ,  H04B1/12

CPC classification number: H04B1/123 ,  H04B1/18

Abstract: A radio frequency (RF) receiver front end includes an RF attenuator for receiving an RF input signal and a low noise amplifier (LNA). In one form, the LNA provides a differential output signal and includes a first polarity amplifier and a plurality of second polarity amplifiers. The first polarity amplifier has an input terminal coupled to the output of the RF attenuator, an output terminal for providing a first component of the differential RF output signal, and has a first input impedance. Each of the plurality of second polarity amplifiers has an input terminal coupled to the output of said RF attenuator, and an output terminal. The output terminals of said plurality of second polarity amplifiers are coupled together and form a second component of the differential RF output signal. Each of the plurality of second polarity amplifiers has a second input impedance higher than the first input impedance.

Abstract translation: 射频（RF）接收机前端包括用于接收RF输入信号的RF衰减器和低噪声放大器（LNA）。 在一种形式中，LNA提供差分输出信号，并且包括第一极性放大器和多个第二极性放大器。 第一极性放大器具有耦合到RF衰减器的输出的输入端，用于提供差分RF输出信号的第一分量的输出端，并具有第一输入阻抗。 多个第二极性放大器中的每一个具有耦合到所述RF衰减器的输出的输入端和输出端。 所述多个第二极性放大器的输出端子耦合在一起并形成差分RF输出信号的第二分量。 多个第二极性放大器中的每一个具有高于第一输入阻抗的第二输入阻抗。

公开(公告)号：US09190975B2

公开(公告)日：2015-11-17

申请号：US14040000

申请日：2013-09-27

Applicant: SILICON LABORATORIES INC.

Inventor： Dan B. Kasha ,  Russell Croman ,  Mike R. May ,  Mark W. May ,  Navin Harwalkar ,  Tim Stroud

IPC: H04B1/00 ,  H03G3/30

CPC classification number: H03G3/3052

Abstract: A radio receiver and method of operating the same are disclosed. In one embodiment, the radio receiver may include a RF receive path configured to convey a first radio signal within a first band to a radio tuning circuit. The RF receive path may be controllable using a first AGC circuit. The radio receiver may also include a loop-through path configured to convey a second radio signal within a second band between an input and an output of the radio receiver. The second band may be different from the first band. The loop-through path may be controllable using a second AGC circuit.

Abstract translation: 公开了一种无线电接收机及其操作方法。 在一个实施例中，无线电接收机可以包括被配置为将第一频带内的第一无线电信号传送到无线电调谐电路的RF接收路径。 RF接收路径可以使用第一AGC电路来控制。 无线电接收机还可以包括循环路径，其被配置为在无线电接收机的输入和输出之间的第二频带内传送第二无线电信号。 第二频带可以不同于第一频带。 可以使用第二AGC电路来控制环通路径。

公开(公告)号：US20150094007A1

公开(公告)日：2015-04-02

申请号：US14040000

申请日：2013-09-27

Applicant: SILICON LABORATORIES INC.

Inventor： Dan B. Kasha ,  Russell Croman ,  Mike R. May ,  Mark W. May ,  Navin Harwalkar ,  Tim Stroud

IPC: H03G3/30

CPC classification number: H03G3/3052

Abstract: A radio receiver and method of operating the same are disclosed. In one embodiment, the radio receiver may include a RF receive path configured to convey a first radio signal within a first band to a radio tuning circuit. The RF receive path may be controllable using a first AGC circuit. The radio receiver may also include a loop-through path configured to convey a second radio signal within a second band between an input and an output of the radio receiver. The second band may be different from the first band. The loop-through path may be controllable using a second AGC circuit.

Abstract translation: 公开了一种无线电接收机及其操作方法。 在一个实施例中，无线电接收机可以包括被配置为将第一频带内的第一无线电信号传送到无线电调谐电路的RF接收路径。 RF接收路径可以使用第一AGC电路来控制。 无线电接收机还可以包括循环路径，其被配置为在无线电接收机的输入和输出之间的第二频带内传送第二无线电信号。 第二频带可以不同于第一频带。 可以使用第二AGC电路来控制环通路径。