公开(公告)号：US20210099140A1

公开(公告)日：2021-04-01

申请号：US16589175

申请日：2019-10-01

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad HASSAN ,  Bhushan Shanti ASURI ,  Mahim RANJAN

IPC: H03F3/193 ,  H03F3/45 ,  H03F1/32 ,  H03F1/56 ,  H03H11/32

Abstract: An amplifier circuit includes an amplifier, a balun comprising a primary side having a primary inductance and a secondary side having a secondary inductance, the primary side coupled to an output of the amplifier, the secondary side coupled to a first output path of the amplifier circuit and a second output path of the amplifier circuit, a shunt inductance coupled to the first output path; and a compensating inductance in the balun, the compensating inductance coupled between a first node and a second node, the first node coupling the compensating inductance to the first output path, the second node coupling the secondary inductance to the compensating inductance.

公开(公告)号：US20180019759A1

公开(公告)日：2018-01-18

申请号：US15413993

申请日：2017-01-24

Applicant: QUALCOMM Incorporated

Inventor： Haim Mendel WEISSMAN ,  Mahim RANJAN

IPC: H03M1/02 ,  H04B1/38 ,  H03F3/19 ,  H03F3/24

CPC classification number: H03M1/02 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/294 ,  H03F2200/451 ,  H03M1/46 ,  H04B1/38 ,  H04L5/00

Abstract: A transceiver including: a reconfigurable circuit including a plurality of units including at least a converter, the converter including: a digital-to-analog converter (DAC); successive approximation register (SAR) logic configured to selectively couple to the DAC; and a plurality of switches configured to reconfigure the plurality of units of the reconfigurable circuit to operate the transceiver in a receive mode or transmit mode.

公开(公告)号：US20190334483A1

公开(公告)日：2019-10-31

申请号：US15963806

申请日：2018-04-26

Applicant: QUALCOMM Incorporated

Inventor： Andreea BALTEANU ,  Mahim RANJAN

IPC: H03F1/12 ,  H03F3/195 ,  H03F3/68 ,  H03F3/213

Abstract: An output driver with programmable single-ended and differential outputs includes a first switch, a first output attenuator, and a programmable attenuator. The first switch is coupled in a shunt configuration to a first path of a differential output of a first amplifier. The first output attenuator is included in the first path and is coupled to the first switch in accordance with the shunt configuration. The programmable attenuator is included in a second path of the differential output of the first amplifier.

公开(公告)号：US20190207558A1

公开(公告)日：2019-07-04

申请号：US15862567

申请日：2018-01-04

Applicant: Qualcomm Incorporated

Inventor： Ayush MITTAL ,  Krishnaswamy THIAGARAJAN ,  Bhushan Shanti ASURI ,  Mahim RANJAN

IPC: H03D7/12

CPC classification number: H03D7/125 ,  H03D2200/0086 ,  H04B1/40

Abstract: An apparatus is disclosed for mixer biasing with baseband filter common-mode voltage. In an example aspect, the apparatus includes a mixer, a baseband filter, and a bias circuit. The mixer has a mixer transistor that is coupled to a bias node and a baseband node. The baseband filter is coupled to the mixer via the baseband node. The baseband filter is configured to operate with a common-mode reference voltage that is associated with a common-mode voltage applied at the baseband node. The bias circuit is coupled to the baseband filter and the bias node. The bias circuit is configured to receive the common-mode reference voltage from the baseband filter and generate, at the bias node, a bias voltage for biasing the mixer transistor based on the common-mode reference voltage.