公开(公告)号：US12273132B2

公开(公告)日：2025-04-08

申请号：US17954428

申请日：2022-09-28

Applicant: Renesas Electronics America Inc.

Inventor： Himanshu Khatri ,  Samet Zihir ,  Tumay Kanar

IPC: H04B1/04 ,  H04B17/11

Abstract: Methods and systems for operating a transceiver are described. A transceiver can include an upconverting mixer, a downconverting mixer, a controller, and an envelope detector. The upconverting mixer can mix an input signal with a local oscillator (LO) signal to generate a transmitter signal. The envelope detector can receive the transmitter signal outputted from the upconverting mixer and output an envelope of the transmitter signal to an output line of the downconverting mixer. The envelope can indicate at least one of a leaked LO signal and an image signal. The controller can receive a calibration parameter that is based on at least one of the leaked LO signal and image signal and calibrate the upconverting mixer based on the calibration parameter.

公开(公告)号：US20240106469A1

公开(公告)日：2024-03-28

申请号：US17954428

申请日：2022-09-28

Applicant: Renesas Electronics America Inc.

Inventor： Himanshu Khatri ,  Samet Zihir ,  Tumay Kanar

IPC: H04B1/04 ,  H04B17/11

CPC classification number: H04B1/04 ,  H04B17/11 ,  H04B2001/0408

Abstract: Methods and systems for operating a transceiver are described. A transceiver can include an upconverting mixer, a downconverting mixer, a controller, and an envelope detector. The upconverting mixer can mix an input signal with a local oscillator (LO) signal to generate a transmitter signal. The envelope detector can receive the transmitter signal outputted from the upconverting mixer and output an envelope of the transmitter signal to an output line of the downconverting mixer. The envelope can indicate at least one of a leaked LO signal and an image signal. The controller can receive a calibration parameter that is based on at least one of the leaked LO signal and image signal and calibrate the upconverting mixer based on the calibration parameter.

公开(公告)号：US10608347B2

公开(公告)日：2020-03-31

申请号：US16449913

申请日：2019-06-24

Applicant: Renesas Electronics America Inc.

Inventor： Samet Zihir ,  Tumay Kanar

IPC: H01Q21/22 ,  H01Q21/24 ,  H01Q3/28 ,  H03F3/45 ,  H04B7/06 ,  H01Q21/06 ,  H01Q3/40 ,  H03F3/195 ,  H03F3/24 ,  H04B1/401 ,  H01Q3/36 ,  H04B1/44 ,  H01Q1/26 ,  H01Q3/46 ,  H01Q21/00 ,  H01Q21/20

Abstract: An apparatus includes a plurality of transceiver circuits and a plurality of feedback networks. Each of the plurality of transceiver circuits may be coupled to a respective antenna element in a respective group of antenna elements of a phased array antenna. Each of the transceiver circuits generally comprises a power amplifier circuit configured, when operating in a transmit mode, to drive the respective antenna element in the respective group of antenna elements. Each of the plurality of feedback networks may be coupled between an output and an input of a respective power amplifier circuit of a respective transceiver circuit. Each of the feedback networks generally comprises a resistor and a capacitor connected in series. The respective power amplifier circuit with the feedback network generally maintains a power matching condition with load variation associated with the antenna elements of the phased array antenna.