Invention Grant
- Patent Title: Circuits and systems for transmitter calibration
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Application No.: US15092422Application Date: 2016-04-06
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Publication No.: US09762284B2Publication Date: 2017-09-12
- Inventor: Reza Alavi , Saeed Aghtar , Kenneth J. Keyes
- Applicant: Analog Devices, Inc.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04B1/525 ; H04B1/12 ; H04B17/14

Abstract:
A method of operating a radio frequency transceiver may include generating, by a transmit circuit of the transceiver, in-phase (I) and quadrature (Q) analog signals based on a digital calibration signal; mixing, by the transmit circuit, the I and Q analog signals with local oscillator (LO) and phase shifted LO signals to generate upconverted I and Q signals, the LO signal having a first frequency, and combining the upconverted I and Q signals to generate a combined signal; and converting, by a receive circuit of the transceiver, a signal based on the combined signal to a received digital signal using a sampling rate at a second frequency, the second frequency being less than the first frequency, wherein the converting downconverts frequency content in the combined signal.
Public/Granted literature
- US20160294437A1 CIRCUITS AND SYSTEMS FOR TRANSMITTER CALIBRATION Public/Granted day:2016-10-06
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