Invention Grant
US08862087B2 Reciprocal mixing noise cancellation in the presence of a modulated blocker
有权
在存在调制阻滞剂的情况下进行交互混合噪声消除
- Patent Title: Reciprocal mixing noise cancellation in the presence of a modulated blocker
- Patent Title (中): 在存在调制阻滞剂的情况下进行交互混合噪声消除
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Application No.: US13897306Application Date: 2013-05-17
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Publication No.: US08862087B2Publication Date: 2014-10-14
- Inventor: Mohyee Mikhemar , David Murphy , Hooman Darabi
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: H04B1/10
- IPC: H04B1/10

Abstract:
A method for reciprocal-mixing noise cancellation may include receiving, from a first mixer, a first signal comprising a wanted signal at a first frequency and a modulated signal at a second frequency. The modulated signal may be a product of a reciprocal-mixing of an unwanted signal with a phase noise. One or more portions of the modulated signal may overlap the wanted signal, adding a reciprocal-mixing noise to the wanted signal. A second signal may be generated by mixing, at a second mixer, the first signal with a third signal, which is at a third frequency related to a blocker offset frequency. A gain may be applied to the second signal to generate an amplified second signal that may be subtracted from the first signal to generate a fourth signal. The fourth signal may be filtered to generate the wanted signal at the first frequency without the reciprocal-mixing noise.
Public/Granted literature
- US20140235191A1 RECIPROCAL MIXING NOISE CANCELLATION IN THE PRESENCE OF A MODULATED BLOCKER Public/Granted day:2014-08-21
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