公开(公告)号：US20160241211A1

公开(公告)日：2016-08-18

申请号：US14620823

申请日：2015-02-12

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Hassan ,  Bhushan Shanti Asuri ,  Apsara Ravish Suvarna ,  Youngchang Yoon

IPC: H03F3/45 ,  H03F1/22

CPC classification number: H03F3/45632 ,  H03F1/223 ,  H03F3/245 ,  H03F3/45188 ,  H03F2200/09 ,  H03F2200/378 ,  H03F2203/45024 ,  H03F2203/45082 ,  H03F2203/45084 ,  H03F2203/45204 ,  H03F2203/45481 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45706 ,  H03F2203/45731

Abstract: A differential amplifier having a tunable filter is disclosed. The tunable filter may attenuate some common-mode signals while not affecting amplification of differential signals. The tunable filter may include a resonant circuit to select frequencies of common-mode signals to attenuate. The resonant circuit may include a variable capacitor series-coupled to an inductor. A resonant frequency of the resonant circuit may be determined, in part, by a capacitance value of the variable capacitor.

Abstract translation: 公开了一种具有可调谐滤波器的差分放大器。 可调谐滤波器可以衰减一些共模信号，而不影响差分信号的放大。 可调滤波器可以包括谐振电路，以选择共模信号的频率来衰减。 谐振电路可以包括串联耦合到电感器的可变电容器。 谐振电路的谐振频率可以部分地由可变电容器的电容值确定。

公开(公告)号：US09473091B2

公开(公告)日：2016-10-18

申请号：US14620823

申请日：2015-02-12

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Hassan ,  Bhushan Shanti Asuri ,  Apsara Ravish Suvarna ,  Youngchang Yoon

IPC: H03F3/45 ,  H03F1/22

CPC classification number: H03F3/45632 ,  H03F1/223 ,  H03F3/245 ,  H03F3/45188 ,  H03F2200/09 ,  H03F2200/378 ,  H03F2203/45024 ,  H03F2203/45082 ,  H03F2203/45084 ,  H03F2203/45204 ,  H03F2203/45481 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45706 ,  H03F2203/45731

Abstract: A differential amplifier having a tunable filter is disclosed. The tunable filter may attenuate some common-mode signals while not affecting amplification of differential signals. The tunable filter may include a resonant circuit to select frequencies of common-mode signals to attenuate. The resonant circuit may include a variable capacitor series-coupled to an inductor. A resonant frequency of the resonant circuit may be determined, in part, by a capacitance value of the variable capacitor.

Abstract translation: 公开了一种具有可调谐滤波器的差分放大器。 可调谐滤波器可以衰减一些共模信号，而不影响差分信号的放大。 可调滤波器可以包括谐振电路，以选择共模信号的频率来衰减。 谐振电路可以包括串联耦合到电感器的可变电容器。 谐振电路的谐振频率可以部分地由可变电容器的电容值确定。

公开(公告)号：US10469122B2

公开(公告)日：2019-11-05

申请号：US15872695

申请日：2018-01-16

Applicant: QUALCOMM Incorporated

Inventor： Chirag Dipak Patel ,  Lai Kan Leung ,  Zhang Jin ,  Chinmaya Mishra ,  Ravi Sridhara ,  Youngchang Yoon

IPC: H04B1/44 ,  H04W72/04 ,  H04L5/14 ,  H03F1/48 ,  H03F3/19 ,  H03F1/56 ,  H03F3/24 ,  H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/18 ,  H04B1/48 ,  H03F3/195

Abstract: Various aspects described herein relate to low-loss multi-band multiplexing schemes for a wireless communications system, for example, a 5th Generation (5G) New Radio (NR) system. In an aspect, a multiplexer for multi-band wireless communications comprises at least one tuning component configured to transmit or receive at least one signal within a frequency band that is selected from a plurality of frequency bands. The multiplexer further comprises at least one combining component, communicatively coupled with the at least one tuning component, configured to transmit or receive the at least one signal within the selected frequency band. In an aspect, the at least one tuning component is integrated on a chip and the at least one combining component is not integrated on the chip.

公开(公告)号：US10439739B2

公开(公告)日：2019-10-08

申请号：US14737611

申请日：2015-06-12

Applicant: QUALCOMM Incorporated

Inventor： Zhang Jin ,  Yung-Chung Lo ,  Youngchang Yoon ,  Ning Yuan ,  Apsara Ravish Suvarna

IPC: H01F27/32 ,  H04B15/02 ,  H04B3/28 ,  H01F27/36 ,  H01L23/522 ,  H01F17/00

Abstract: Certain aspects of the present disclosure provide techniques and apparatus employing an isolation ring having a center strip of conductive material used to isolate magnetic fields generated by common-mode and differential-mode current flow through one or more inductors disposed in the ring. The apparatus generally includes an electrical component having an inductive element and a ring of electrically conductive material encircling the inductive element, wherein the ring has a strip of electrically conductive material disposed in the ring and connecting a first point on the ring to a second point on the ring.

公开(公告)号：US20180062636A1

公开(公告)日：2018-03-01

申请号：US15634800

申请日：2017-06-27

Applicant: Qualcomm Incorporated

Inventor： Hayg-Taniel Dabag ,  Bhushan Shanti Asuri ,  Hongyan Yan ,  Sy-Chyuan Hwu ,  Youngchang Yoon

IPC: H03K17/16

CPC classification number: H03K17/161 ,  H03K17/063 ,  H03K17/693 ,  H03K2217/0054 ,  H04B1/44

Abstract: Various aspects of this disclosure describe configuring and operating a transistor switch. Examples include a self-biasing circuit that contains a diode-connected transistor whose source or drain is connected to the gate of a transistor configured as a switch. The diode-connected transistor is enabled and disabled responsive to voltage swings in the input signal to the transistor configured as a switch. When enabled, the diode-connected transistor may charge the floating gate voltage of the transistor configured as a switch. When disabled, the diode-connected transistor may acts as a high impedance to inhibit voltage discharge from the gate of the transistor configured as a switch.