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公开(公告)号：US20160156085A1
公开(公告)日：2016-06-02
申请号：US14555623
申请日：2014-11-27
Applicant: Infineon Technologies AG
Inventor： Christoph Wagner , Matthias Porranzl
CPC classification number: H03H11/34 , H01P1/18 , H01P1/383 , H03F1/565 , H03F3/45076 , H03F3/4508 , H03F3/60 , H03F2200/451 , H03F2203/45034 , H03H11/36
Abstract: An RF quasi circulator circuit is described herein. In accordance with one example of the disclosure the circuit includes a receive port, a transmit port and an antenna port as well as a differential amplifier stage having a first input, a second input and an output that is coupled to the receive port. The circuit further includes a first phase shifting element and a second phase shifting element. The first phase shifting element is coupled between the transmit port and the first input of the differential amplifier and the second phase shifting element is coupled between the transmit port and the second input of the differential amplifier. A tunable impedance is coupled to the differential amplifier, and the antenna port is coupled to the first input of the differential amplifier. The tunable impedance is controlled to tune the damping in a signal path from the transmit port to the receive port.
Abstract translation: 本文描述了RF准循环器电路。 根据本公开的一个示例，电路包括接收端口，发送端口和天线端口以及具有耦合到接收端口的第一输入，第二输入和输出的差分放大器级。 电路还包括第一相移元件和第二相移元件。 第一相移元件耦合在差分放大器的发送端口和第一输入端之间，第二移相元件耦合在差分放大器的发送端口和第二输入端之间。 可调阻抗耦合到差分放大器，并且天线端口耦合到差分放大器的第一输入端。 可调阻抗被控制以调节从发射端口到接收端口的信号路径中的阻尼。
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公开(公告)号：US09966931B2
公开(公告)日：2018-05-08
申请号：US14555623
申请日：2014-11-27
Applicant: Infineon Technologies AG
Inventor： Christoph Wagner , Matthias Porranzl
CPC classification number: H03H11/34 , H01P1/18 , H01P1/383 , H03F1/565 , H03F3/45076 , H03F3/4508 , H03F3/60 , H03F2200/451 , H03F2203/45034 , H03H11/36
Abstract: An RF quasi circulator circuit is described herein. In accordance with one example of the disclosure the circuit includes a receive port, a transmit port and an antenna port as well as a differential amplifier stage having a first input, a second input and an output that is coupled to the receive port. The circuit further includes a first phase shifting element and a second phase shifting element. The first phase shifting element is coupled between the transmit port and the first input of the differential amplifier and the second phase shifting element is coupled between the transmit port and the second input of the differential amplifier. A tunable impedance is coupled to the differential amplifier, and the antenna port is coupled to the first input of the differential amplifier. The tunable impedance is controlled to tune the damping in a signal path from the transmit port to the receive port.
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