Invention Grant
- Patent Title: Architecture to reject near end blockers and transmit leakage
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Application No.: US14331685Application Date: 2014-07-15
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Publication No.: US09647638B2Publication Date: 2017-05-09
- Inventor: Mohammad Bagher Vahid Far , Cheng-Han Wang , Jesse Aaron Richmond , Thinh Cat Nguyen , Abbas Komijani , Yashar Rajavi , Alireza Khalili
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza LLP
- Main IPC: G06F17/10
- IPC: G06F17/10 ; H03H11/04 ; H03H11/12 ; H04B1/10 ; H04B1/525

Abstract:
A method and apparatus for minimizing transmit signal interference is provided. The method includes the steps of: receiving a signal and amplifying the received signal. The received signal is then mixed with an intermediate frequency signal to obtain a baseband modulated signal. The baseband modulated signal is first filtered in an RC filter. The resulting signal is then divided by a preselected amount and the first divided portion is sent to a main path of a biquad filter, which produces a first stage biquad filtered signal. The second portion of the divided signal is sent to an auxiliary path of the biquad filter, and produces a second filtered signal. The first and second signals are then recombined and sent to the second stage of the biquad filter, where further filtering takes place.
Public/Granted literature
- US20160020752A1 ARCHITECTURE TO REJECT NEAR END BLOCKERS AND TRANSMIT LEAKAGE Public/Granted day:2016-01-21
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