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US-20260128755-A1 - DYNAMIC SWITCHING OF A RECEIVER OPERATING MODE

US20260128755A1US 20260128755 A1US20260128755 A1US 20260128755A1US-20260128755-A1

Abstract

Certain aspects of the present disclosure generally relate to techniques and apparatus for dynamically switching an operating mode of a wireless receiver. An example method includes receiving signal(s) via a receive path including a first amplifier and a second amplifier having an input coupled to an output of the first amplifier. An operating mode of the receive path is dynamically switched to at least one of a first operating mode or a second operating mode while receiving the signal(s), based at least in part on a gain state of the second amplifier. In the first operating mode, receiving the signal(s) includes transferring a processed version of the signal(s) from the first amplifier to the second amplifier. In the second operating mode, receiving the signal(s) includes bypassing the first amplifier or setting a gain state of the first amplifier to a lowest gain value available for the first amplifier.

Inventors

  • Saranyan NAGARAJAN
  • Raveesh JUNEJA
  • Arjun Nadh
  • Tonmoy Biswas
  • Sree Venkatesh THATAVARTHY

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260507
Application Date
20241104

Claims (20)

  1. 1 . A receiver comprising: a receive path comprising a first amplifier and a second amplifier having an input coupled to an output of the first amplifier; and control logic coupled to the receive path and configured to dynamically switch an operating mode of the receive path to at least one of a first operating mode or a second operating mode based at least in part on a gain state of the receiver following the first amplifier, wherein: when receiving one or more signals in the first operating mode, the receive path is configured to transfer a processed version of the one or more signals from the first amplifier to the second amplifier; and when receiving the one or more signals in the second operating mode, the receive path is configured to bypass the first amplifier or set a gain state of the first amplifier to a lowest gain value available for the first amplifier.
  2. 2 . The receiver of claim 1 , wherein the control logic is configured to dynamically switch the operating mode to the first operating mode when the gain state is set to one of a first gain state and a second gain state of the first set of gain states associated with an overall gain state of the receiver.
  3. 3 . The receiver of claim 2 , wherein the one of the first gain state and the second gain state of the first set of gain states has a highest gain value out of the first set of gain states.
  4. 4 . The receiver of claim 2 , wherein the control logic is configured to dynamically switch the operating mode to the second operating mode when the gain state is set to one of a second set of gain states associated with the overall gain state of the receiver.
  5. 5 . The receiver of claim 4 , wherein to dynamically switch the operating mode to the second operating mode, the control logic is configured to set the gain state of the first amplifier to the lowest gain value available for the first amplifier.
  6. 6 . The receiver of claim 4 , wherein: the receive path further comprises a switch coupled between an input of the first amplifier and the output of the first amplifier; and to dynamically switch the operating mode to the second operating mode, the control logic is configured to configure the switch in a closed state.
  7. 7 . The receiver of claim 4 , wherein each gain value associated with the first set of gain states of the overall gain state is higher than each gain value associated with the second set of gain states of the overall gain state.
  8. 8 . The receiver of claim 1 , wherein: the receive path further comprises a matching network coupled between the first amplifier and the second amplifier; in the first operating mode, the receive path is configured to transfer the processed version of the one or more signals from the first amplifier to the second amplifier via the matching network; and in the second operating mode, the receive path is configured to receive the one or more signals at the input of the second amplifier via the matching network with the gain state of the first amplifier set to the lowest gain value available for the first amplifier.
  9. 9 . The receiver of claim 8 , wherein the matching network comprises at least one of a shunt capacitive element, a shunt inductive element, a pi network, or a T network.
  10. 10 . The receiver of claim 1 , wherein the control logic is configured to dynamically switch the operating mode of the receive path further based at least in part on a presence of a jammer signal.
  11. 11 . A method of wireless communication, comprising: receiving one or more signals via a receiver comprising a receive path comprising a first amplifier and a second amplifier having an input coupled to an output of the first amplifier; and dynamically switching an operating mode of the receive path to at least one of a first operating mode or a second operating mode while receiving the one or more signals, based at least in part on a gain state of the receiver following the first amplifier, wherein: in the first operating mode, receiving the one or more signals comprises transferring a processed version of the one or more signals from the first amplifier to the second amplifier; and in the second operating mode, receiving the one or more signals comprises bypassing the first amplifier or setting a gain state of the first amplifier to a lowest gain value available for the first amplifier.
  12. 12 . The method of claim 11 , wherein dynamically switching the operating mode comprises switching the operating mode to the first operating mode when the gain state is set to one of a first gain state and a second gain state of the first set of gain states associated with an overall gain state of the receiver.
  13. 13 . The method of claim 12 , wherein the one of the first gain state and the second gain state of the first set of gain states has a highest gain value out of the first set of gain states.
  14. 14 . The method of claim 12 , wherein dynamically switching the operating mode comprises switching the operating mode to the second operating mode when the gain state is set to one of a second set of gain states associated with the overall gain state of the receiver.
  15. 15 . The method of claim 14 , wherein dynamically switching the operating mode to the second operating mode comprises setting the gain state of the first amplifier to the lowest gain value available for the first amplifier.
  16. 16 . The method of claim 14 , wherein: the receive path further comprises a switch coupled between an input of the first amplifier and the output of the first amplifier; and dynamically switching the operating mode to the second operating mode comprises configuring the switch in a closed state.
  17. 17 . The method of claim 14 , wherein each gain value associated with the first set of gain states of the overall gain state is higher than each gain value associated with the second set of gain states of the overall gain state.
  18. 18 . The method of claim 11 , wherein receiving the one or more signals comprises: in the first operating mode, transferring the processed version of the one or more signals from the first amplifier to the second amplifier via a matching network; and in the second operating mode, receiving the one or more signals at the input of the second amplifier via the matching network with the gain state of the first amplifier set to the lowest gain value available for the first amplifier.
  19. 19 . The method of claim 18 , wherein the matching network comprises at least one of a shunt capacitive element, a shunt inductive element, a pi network, or a T network.
  20. 20 . A wireless device comprising: an antenna; and a receiver coupled to the antenna, the receiver comprising: a receive path comprising a first amplifier and a second amplifier having an input coupled to an output of the first amplifier; and control logic coupled to the receive path and configured to dynamically switch an operating mode of the receive path to at least one of a first operating mode or a second operating mode based at least in part on a gain state of the receiver following the first amplifier, wherein: when receiving one or more signals in the first operating mode, the receive path is configured to transfer a processed version of the one or more signals from the first amplifier to the second amplifier; and when receiving the one or more signals in the second operating mode, the receive path is configured to bypass the first amplifier or set a gain state of the first amplifier to a lowest gain value available for the first amplifier.

Description

TECHNICAL FIELD Certain aspects of the present disclosure generally relate to electronic circuits and, more particularly, to techniques and apparatus for dynamically switching an operating mode of a wireless receiver. BACKGROUND Wireless communication devices are widely deployed to provide various communication services such as telephony, video, data, messaging, broadcasts, and so on. Such wireless communication devices may transmit and/or receive radio frequency (RF) signals via any of various suitable radio access technologies (RATs) including, but not limited to, Fifth Generation (5G) New Radio (NR), Long Term Evolution (LTE), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wideband CDMA (WCDMA), Global System for Mobility (GSM), Bluetooth, Bluetooth Low Energy (BLE), Zigbee, wireless local area network (WLAN) RATs (e.g., WiFi), and the like. A wireless communication network may include a number of base stations that can support communication for a number of mobile stations. A mobile station (MS) may communicate with a base station (BS) via a downlink and an uplink. The downlink (or forward link) refers to the communication link from the base station to the mobile station, and the uplink (or reverse link) refers to the communication link from the mobile station to the base station. A base station may transmit data and control information on the downlink to a mobile station and/or may receive data and control information on the uplink from the mobile station. The base station and/or mobile station may include one or more transmitters and receivers. SUMMARY The systems, methods, and devices of the disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of this disclosure as expressed by the claims which follow, some features will now be discussed briefly. After considering this discussion, and particularly after reading the section entitled “Detailed Description,” one will understand how the features of this disclosure provide the advantages described herein. Certain aspects of the present disclosure provide a receiver. The receiver includes a receive path and control logic coupled to the receive path. The receive path includes a first amplifier and a second amplifier having an input coupled to an output of the first amplifier. The control logic is configured to dynamically switch an operating mode of the receive path to at least one of a first operating mode or a second operating mode based at least in part on a gain state of the receiver following the first amplifier. When receiving one or more signals in the first operating mode, the receive path is configured to transfer a processed version of the one or more signals from the first amplifier to the second amplifier. When receiving the one or more signals in the second operating mode, the receive path is configured to bypass the first amplifier or set a gain state of the first amplifier to a lowest gain value available for the first amplifier. Certain aspects of the present disclosure provide a method of wireless communication. The method generally includes receiving one or more signals via a receiver comprising a receive path comprising a first amplifier and a second amplifier having an input coupled to an output of the first amplifier. The method also includes dynamically switching an operating mode of the receive path to at least one of a first operating mode or a second operating mode while receiving the one or more signals, based at least in part on a gain state of the receiver following the first amplifier. In the first operating mode, receiving the one or more signals includes transferring a processed version of the one or more signals from the first amplifier to the second amplifier. In the second operating mode, receiving the one or more signals includes bypassing the first amplifier or setting a gain state of the first amplifier to a lowest gain value available for the first amplifier. Certain aspects of the present disclosure provide a wireless device. The wireless device includes an antenna and a receiver coupled to the antenna. The receiver includes a receive path and control logic coupled to the receive path. The receive path includes a first amplifier and a second amplifier having an input coupled to an output of the first amplifier. The control logic is configured to dynamically switch an operating mode of the receive path to at least one of a first operating mode or a second operating mode based at least in part on a gain state of the receiver following the first amplifier. When receiving one or more signals in the first operating mode, the receive path is configured to transfer a processed version of the one or more signals from the first amplifier to the second amplifier. When receiving the one or more signals in the second operating mode, the receive path is configured to bypass the first amplifier or set a gain state of th