Wireless receiver with axial ratio and cross-polarization calibration
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United States of America Patent
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Mar 20, 2018
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app pub date -
Aug 1, 2016
filing date -
Aug 1, 2016
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Abstract
A wireless receiver includes an antenna panel coupled to an H-combined/V-combined generation block, an axial ratio and cross-polarization calibration block to correct for an undesired variation in H-combined and V-combined outputs, and an LHCP/RHCP generation block to produce left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) outputs. The axial ratio and cross-polarization calibration block generates an H-corrected output by summing the H-combined output amplified by a first variable gain amplifier and the V-combined output amplified by a second variable gain amplifier, and a V-corrected output by summing the V-combined output amplified by a third variable gain amplifier and the H-combined output amplified by a fourth variable gain amplifier.
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