Invention Application
- Patent Title: Nullification of transmitter noise at receive signal frequency
- Patent Title (中): 发射机噪声在接收信号频率上的消除
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Application No.: US11825415Application Date: 2007-07-06
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Publication No.: US20090010317A1Publication Date: 2009-01-08
- Inventor: Ahmad Mirzaei , Hooman Darabi
- Applicant: Ahmad Mirzaei , Hooman Darabi
- Applicant Address: US CA IRVINE
- Assignee: BROADCOM CORPORATION
- Current Assignee: BROADCOM CORPORATION
- Current Assignee Address: US CA IRVINE
- Main IPC: H04B1/38
- IPC: H04B1/38

Abstract:
According to one exemplary embodiment, a transceiver for nullification of a noise component in a transmitter comprises a noise nullification module loading a selected node in the transmitter. The noise nullification module comprises a mixer that receives inputs from the selected node and a local oscillator, where the mixer is also coupled to a filter such that the noise nullification module presents a low impedance at an approximate frequency of a noise component so as to nullify the noise component. In one embodiment, the noise nullification module results in band-pass filtering of an approximate receive signal frequency so as to nullify a noise component at the receive frequency. In another embodiment, the noise nullification module results in notch filtering of an approximate transmit signal frequency so as to nullify a noise component at a receive signal frequency.
Public/Granted literature
- US09071317B2 Nullification of transmitter noise at receive signal frequency Public/Granted day:2015-06-30
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