SELF-CONTAINED IN-PHASE AND QUADRATURE (IQ) IMAGE REJECTION CALIBRATION ON HETERODYNE TRANSCEIVERS IN MILLIMETER-WAVE PHASE ARRAY SYSTEM

SELF-CONTAINED IN-PHASE AND QUADRATURE (IQ) IMAGE REJECTION CALIBRATION ON HETERODYNE TRANSCEIVERS IN MILLIMETER-WAVE PHASE ARRAY SYSTEM

A millimeter-wave phase array system may include massive heterodyne transceivers as its building elements. A transceiver of each element may include an IQ image rejection heterodyne transmitter and a receiver. Each transmitter may include a single DAC, a Tx I channel, and a Tx Q channel. Each receiv...

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Hauptverfasser: Hornbuckle, Craig A, Guan, Claire Huinan
Format: Patent
Sprache:eng ; fre ; ger
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Guan, Claire Huinan
description A millimeter-wave phase array system may include massive heterodyne transceivers as its building elements. A transceiver of each element may include an IQ image rejection heterodyne transmitter and a receiver. Each transmitter may include a single DAC, a Tx I channel, and a Tx Q channel. Each receiver may include an Rx I channel, an Rx Q channel, and a single ADC. For Tx IQ image rejection calibration, amplitude and phase offsets are determined, using both the Tx I and Tx Q channels from a first element and using only one of the Rx I or Rx Q channel from a second element. The IQ channel imbalances are compensated using the offsets in analog domain. A similar procedure is used for Rx IQ image rejection calibration with alternated signal path enabling. A frequency response variation of an RF front end is detected with a single path Tx/Rx channel setup.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title SELF-CONTAINED IN-PHASE AND QUADRATURE (IQ) IMAGE REJECTION CALIBRATION ON HETERODYNE TRANSCEIVERS IN MILLIMETER-WAVE PHASE ARRAY SYSTEM
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