Circuits and methods for spatio-spectral interference mitigation
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United States of America Patent
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Feb 27, 2018
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N/A
app pub date -
Jan 30, 2017
filing date -
Jan 29, 2016
priority date (Note) -
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Abstract
A plurality of receivers each having: an RF amplifier having an RFAMP input coupled to an antenna and having an RFAMP output; a capacitor having a CAP first side connected to the RFAMP output and a CAP second side; a passive mixer coupled to the RFAMP input, the CAP second side, and the output of a local oscillator phase shifter; an operational transconductor amplifier having an OTA input connected to the CAP second side and having an OTA output; a feedback resistor connected between the OTA input and the OTA output; a baseband transconductor having a BBGM input connected to the OTA input and a BBGM output; a cancelling transconductor having a CANCELLER output connected to the BBGM output and having a CANCELLER input; and an attenuator between the OTA output and the CANCELLER input, wherein the OTA output of each of the plurality of receivers are connected together.
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