Invention Grant
- Patent Title: Dynamic local oscillator (LO) scheme and switchable receive (RX) chain for carrier aggregation
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Application No.: US14636591Application Date: 2015-03-03
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Publication No.: US09681447B2Publication Date: 2017-06-13
- Inventor: Yiwu Tang , Rajagopalan Rangarajan , Chiewcharn Narathong , Lai Kan Leung , Aleksandar Miodrag Tasic , Dongling Pan
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04W72/04 ; H04L5/00 ; H04B1/16 ; H04L27/26 ; H04B1/38

Abstract:
Certain aspects of the present disclosure provide methods and apparatus for dynamically adjusting a voltage-controlled oscillator (VCO) frequency, a local oscillator (LO) divider ratio, and/or a receive path when adding or discontinuing reception of a component carrier (CC) in a carrier aggregation (CA) scheme. This dynamic adjustment is utilized to avoid (or at least reduce) VCO, LO, and transmit signal coupling issues with multiple component carriers, with minimal (or at least reduced) current consumption by the VCO and the LO divider.
Public/Granted literature
- US20150334710A1 DYNAMIC LOCAL OSCILLATOR (LO) SCHEME AND SWITCHABLE RECEIVE (RX) CHAIN FOR CARRIER AGGREGATION Public/Granted day:2015-11-19
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