公开(公告)号：US20210075371A1

公开(公告)日：2021-03-11

申请号：US16564881

申请日：2019-09-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rohit CHATTERJEE

IPC: H03F1/02 ,  H03K17/56 ,  H03H7/38 ,  H03F3/213 ,  H03F3/45

Abstract: An integrated circuit device is provided. In some examples, the integrated circuit device includes a first amplifier path, a second amplifier path coupled in parallel with the first amplifier path, a matching network coupled to the first amplifier path and the second amplifier path, and an antenna coupled to the matching network. In some such examples, the first amplifier path includes a first differential power amplifier coupled to the matching network, and the second amplifier path includes a second differential power amplifier coupled to the matching network. The integrated circuit device may further include a controller coupled to selectively enable the first amplifier path to provide a transmitter output power within a first range and to selectively enable the second amplifier path to provide a transmitter output power within a second range that is different from the first range.

公开(公告)号：US20230094295A1

公开(公告)日：2023-03-30

申请号：US17489163

申请日：2021-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rohit CHATTERJEE ,  Debapriya SAHU

IPC: H04B1/00 ,  H04B1/04

Abstract: A transmitter comprises an antenna array demultiplexor having a first input for an output signal, a second input for a control signal, a first output coupled to a first output pin, and a second output coupled to a second output pin. The antenna array demultiplexor provides the output signal to the first or second output based on the control signal. The first and second output pins are coupled to first and second antennae, respectively. In some implementations, the transmitter includes a transformer and a capacitor coupled in parallel between the first and second output pins, and the antenna array demultiplexor comprises a first switch coupled between the first output pin and a first ground pin, and a second switch coupled between the second output pin and a second ground pin. The first switch receives a second control signal, and the second switch receives an inverse of the second control signal.

公开(公告)号：US20220345161A1

公开(公告)日：2022-10-27

申请号：US17385653

申请日：2021-07-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rohit CHATTERJEE

IPC: H04B1/04 ,  H03F3/24 ,  H03F3/72 ,  H01L23/66

Abstract: In many examples, a device comprises a transmitter. The transmitter comprises a power amplifier, a first transformer coil coupled to the power amplifier, and a second transformer coil adapted to be electromagnetically coupled to the first transformer coil. The transmitter also comprises a first bond wire coupled to a first end of the second transformer coil and adapted to be coupled to a first end of an antenna, a capacitor coupled to a second end of the second transformer coil, a switch coupled to the capacitor and configured to engage and disengage the capacitor from the transmitter, and a second bond wire coupled to the switch and adapted to be coupled to a second end of the antenna.

公开(公告)号：US20240313810A1

公开(公告)日：2024-09-19

申请号：US18669603

申请日：2024-05-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rohit CHATTERJEE ,  Debapriya SAHU

IPC: H04B1/00 ,  H04B1/04

CPC classification number: H04B1/0064 ,  H04B1/0475 ,  H04B1/0483 ,  H04B2001/0408

Abstract: A transmitter comprises an antenna array demultiplexor having a first input for an output signal, a second input for a control signal, a first output coupled to a first output pin, and a second output coupled to a second output pin. The antenna array demultiplexor provides the output signal to the first or second output based on the control signal. The first and second output pins are coupled to first and second antennae, respectively. In some implementations, the transmitter includes a transformer and a capacitor coupled in parallel between the first and second output pins, and the antenna array demultiplexor comprises a first switch coupled between the first output pin and a first ground pin, and a second switch coupled between the second output pin and a second ground pin. The first switch receives a second control signal, and the second switch receives an inverse of the second control signal.

公开(公告)号：US20230421189A1

公开(公告)日：2023-12-28

申请号：US18308556

申请日：2023-04-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sucheth Sureshbabu KUNCHAM ,  Prakhar AGRAWAL ,  Rohit CHATTERJEE

IPC: H04B1/10 ,  H03D7/12 ,  H04L27/38

CPC classification number: H04B1/109 ,  H03D7/12 ,  H04L27/38

Abstract: In an example, a system includes a receiver configured to receive a differential input signal from a quadrature amplitude modulation (QAM) transmitter at a differential interface that includes a first input and a second input. The system also includes a first switch coupled to the first input and a second switch coupled to the second input, where the first switch and second switch are configured to couple the first input and the second input to a complex mixer in a non-inverting configuration. The system includes a third switch coupled to the first input and a fourth switch coupled to the second input, where the third switch and the fourth switch are configured to couple the first input and the second input to the complex mixer in an inverting configuration. The complex mixer is configured to produce an output signal based on the non-inverting configuration and the inverting configuration.