公开(公告)号：US20240056043A1

公开(公告)日：2024-02-15

申请号：US17886887

申请日：2022-08-12

Applicant: QUALCOMM Incorporated

Inventor： Rahul SINGH ,  Mehran BAKHSHIANI ,  Timothy Donald GATHMAN ,  Yuhua GUO ,  Elias DAGHER

IPC: H03F3/45 ,  H04B1/10 ,  H03H11/04 ,  H04B1/04 ,  H03F1/14 ,  H03M1/12

CPC classification number: H03F3/45273 ,  H04B1/10 ,  H03H11/04 ,  H04B1/04 ,  H03F1/14 ,  H03M1/12

Abstract: An apparatus, including a positive input for an input differential signal; a negative input for the input differential signal; a positive output for an output differential signal; a negative output for the output differential signal; a first capacitor including a first terminal coupled to the positive output; a second capacitor including a first terminal coupled to the negative output; and a switching network configured to: couple a second terminal of the first capacitor to the negative input or a positive node based on a mode signal; and couple a second terminal of the second capacitor to the positive input or a negative node based on the mode signal.

公开(公告)号：US20230283268A1

公开(公告)日：2023-09-07

申请号：US17652961

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

Inventor： Rahul SINGH ,  Mehran BAKHSHIANI

IPC: H03K5/01 ,  H03F3/19

CPC classification number: H03K5/01 ,  H03F3/19 ,  H03F2200/451 ,  H03F2200/294

Abstract: Attenuators are disclosed according to various aspects. In some aspects, an attenuator includes resistors coupled along a resistive path, wherein a first one of the resistors is coupled to an input of the attenuator, and shunt circuits, wherein each one of the shunt circuits is coupled between a respective node on the resistive path and an output of the attenuator. In other aspects, an attenuator includes routing circuits coupled in parallel between an input of the attenuator and an output of the attenuator, wherein each one of the routing circuits includes a respective series resistor and a respective series switch coupled in series between the input of the attenuator and the output of the attenuator, and a respective switchable resistor circuit coupled to a respective node between the respective series resistor and the respective series switch, wherein resistances of the series resistors of the routing circuits are binary weighted.

公开(公告)号：US20230253990A1

公开(公告)日：2023-08-10

申请号：US17669178

申请日：2022-02-10

Applicant: QUALCOMM Incorporated

Inventor： Rahul SINGH ,  Bo YANG

IPC: H04B1/00 ,  H04B1/10 ,  H03H7/46 ,  H03F3/19

CPC classification number: H04B1/006 ,  H04B1/0089 ,  H04B1/1036 ,  H03H7/465 ,  H03F3/19 ,  H03H2250/00

Abstract: An aspect of the disclosure relates to a receiver, including: a low noise amplifier (LNA); and an input stage coupled to the LNA, wherein the input stage is configured to provide a first passband for a first signal across at least a portion of a first frequency band and a notch to substantially reject a second signal within the first frequency band or a second frequency band in accordance with a first mode of operation, and a second passband for the second signal across the second frequency band in accordance with a second mode of operation. In the first mode, the input stage includes a parallel L-C resonance frequency and an L-match impedance matching circuit. In the second mode, the input stage includes a modified bridge T-coil impedance matching circuit with substantially no electromagnetic coupling between the inductors of the circuit.