Invention Grant
- Patent Title: Nullification of transmitter noise at receive signal frequency
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Application No.: US11825415Application Date: 2007-07-06
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Publication No.: US09071317B2Publication Date: 2015-06-30
- Inventor: Ahmad Mirzaei , Hooman Darabi
- Applicant: Ahmad Mirzaei , Hooman Darabi
- Applicant Address: US CA Irvine
- Assignee: BROADCOM CORPORTION
- Current Assignee: BROADCOM CORPORTION
- Current Assignee Address: US CA Irvine
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04B1/10

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
- US20090010317A1 Nullification of transmitter noise at receive signal frequency Public/Granted day:2009-01-08
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