-
公开(公告)号：US20250038752A1
公开(公告)日：2025-01-30
申请号：US18783547
申请日：2024-07-25
Applicant: QUALCOMM Incorporated
Inventor： Jang Joon LEE , Aleksandar Miodrag TASIC , Prakash THOPPAY EGAMBARAM , Kyle David HOLLAND , Chih-Fan LIAO , Tomas O'SULLIVAN , Dhon-Gue LEE , Dongling PAN , Chirag Dipak PATEL , Yangchuan CHEN
Abstract: Certain aspects of the present disclosure are directed towards apparatus and techniques for receiver calibration. An example apparatus generally includes: a first receiver having a first oscillating signal generation circuit, an output of the first oscillating signal generation circuit being coupled to an input of a first splitter, wherein the first splitter has multiple outputs; a second receiver having a second oscillating signal generation circuit coupled to an LO input of each of a first plurality of mixers of the second receiver; and signal paths between the multiple outputs of the first splitter and signal inputs of the first plurality of mixers, respectively.
-
2.发明公开公开(公告)号：US20240106474A1
公开(公告)日：2024-03-28
申请号：US17934455
申请日：2022-09-22
Applicant: QUALCOMM Incorporated
Inventor： Gary Lee BROWN, Jr. , Chirag Dipak PATEL , Prakash THOPPAY EGAMBARAM
Abstract: Methods and apparatus for calibration of a second-order input intercept point (IIP2) of a mixer, such as a mixer in a wireless receive chain. One example circuit for mixer IIP2 calibration generally includes a first receive chain comprising a first mixer and a single tone generator having an output coupled to an input of the first mixer and configured to generate a calibration signal having a single baseband tone. One example method of mixer IIP2 calibration generally includes generating a calibration signal comprising a single baseband tone, applying the calibration signal to an input of a mixer, such that the mixer generates a differential tone at an output of the mixer, and adjusting the mixer to minimize a power of the differential tone at the output of the mixer.
-
Patent Agency Ranking
公开(公告)号：US20230275602A1
公开(公告)日：2023-08-31
申请号：US18310453
申请日：2023-05-01
Applicant: QUALCOMM Incorporated
IPC: H04B1/00 , H03K3/2885
CPC classification number: H04B1/006 , H03K3/2885
Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry for a t-switch with gate shunting. One aspect is an apparatus including a first differential switch having a control input. The apparatus further includes a second differential switch coupled to the first differential switch, the second differential switch a control input. A shunt capacitor is coupled between a first output and a second output of the first differential switch, and a first input and a second input of the second differential switch. A first shunt switch having a control input, an input, and an output has the input and the output coupled to the control input of the first differential switch. A second shunt switch having a control input, an input, and an output, has the input and the output coupled to the control input of the second differential switch.
-
公开(公告)号：US20170201218A1
公开(公告)日：2017-07-13
申请号：US15178529
申请日：2016-06-09
Applicant: QUALCOMM Incorporated
Inventor： Chuan WANG , Kevin Hsi Huai WANG , Chiewcharn NARATHONG , Mehmet UZUNKOL , Prakash THOPPAY EGAMBARAM
CPC classification number: H03F3/195 , H03F1/565 , H03F2200/294 , H03F2200/378 , H03F2200/423 , H03F2200/451 , H03F2200/541 , H04B1/401 , H04W88/02
Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.
-
公开(公告)号：US20230421195A1
公开(公告)日：2023-12-28
申请号：US18338642
申请日：2023-06-21
Applicant: QUALCOMM Incorporated
IPC: H04B1/18
CPC classification number: H04B1/18
Abstract: Carrier aggregation (CA) may cause interference between operation on two or more carriers within a user equipment (UE). This interference can degrade signal quality on one or more of the carriers involved in the carrier aggregation, which may be referred to as “desensing” one or more carriers. One or more isolating buffers may be coupled at a down-conversion mixer at a point where the down-conversion mixer receives a signal from a transmission line for isolating the transmission line from other transmission lines. The isolating buffer may reduce the effect of interference between multiple transmission lines carrying different carriers during carrier aggregation (CA) operation. The isolating buffers may be used in an RF transceiver supporting both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.
-
公开(公告)号：US20230097399A1
公开(公告)日：2023-03-30
申请号：US17448750
申请日：2021-09-24
Applicant: QUALCOMM Incorporated
Inventor： Ahmed ABBAS MOHAMED HELMY , Francesco GATTA , Balasubramanian RAMACHANDRAN , Abhishek Ananthrao KULKARNI , Prakash THOPPAY EGAMBARAM , Hasnain LAKDAWALA , Aleksandar Miodrag TASIC , Jang Joon LEE , Kyle David HOLLAND
Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for operating a wireless receiver of the apparatus in a high linearity mode. An example method includes operating the apparatus in a first mode with transmission of a plurality of transmit signals. The method also includes attenuating a received signal via an attenuator while operating the apparatus in the first mode. The method further includes amplifying the attenuated signal with an amplifier while operating the apparatus in the first mode. For certain aspects, the method further involves operating the apparatus in a second mode, bypassing the attenuator while operating the apparatus in the second mode, and amplifying the received signal with the amplifier while operating the apparatus in the second mode.
-
公开(公告)号：US20210409040A1
公开(公告)日：2021-12-30
申请号：US17327285
申请日：2021-05-21
Applicant: QUALCOMM Incorporated
IPC: H04B1/00 , H04L25/24 , H03K3/2885
Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry for a t-switch with gate shunting. One aspect is an apparatus including a first differential switch having a control input. The apparatus further includes a second differential switch coupled to the first differential switch, the second differential switch a control input. A shunt capacitor is coupled between a first output and a second output of the first differential switch, and a first input and a second input of the second differential switch. A first shunt switch having a control input, an input, and an output has the input and the output coupled to the control input of the first differential switch. A second shunt switch having a control input, an input, and an output, has the input and the output coupled to the control input of the second differential switch.
-
-
-
-
-
-
Search Results
7
records
(took 0.02 seconds)
