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Registered APPARATUS FOR CALIBRATING AMPLITUDE AND PHASE ERRORS, MULTIPORT AMPLIFIER INCLUDING THE SAME, AND METHOD OF AMPLIFYING THE MULTIPORT AMPLIFIER
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APPARATUS FOR CALIBRATING AMPLITUDE AND PHASE ERRORS, MULTIPORT AMPLIFIER INCLUDING THE SAME, AND METHOD OF AMPLIFYING THE MULTIPORT AMPLIFIER
- Inventors
- Seong Mo Moon, Shin Dong Hwan, In Bok Yom
- Application No.
- 13495435 (2012.06.13)
- Publication No.
- 20120319771 (2012.12.20)
- Registration No.
- 8588343 (2013.11.19)
- Country
- UNITED STATES
- Project Code
- 11PR4100, Development of Flexible Output Power Allocation Technology for Ka Band Satellite Service Area, In Bok Yom
- Abstract
- A multiport amplifier modulates a reference quadrature phase shift keying (QPSK) signal using an input RF signal to an input hybrid network, generates a plurality of binary phase shift keying (BPSK) signals by demodulating RF signals that are amplified by a plurality of power amplifiers, detects an amplitude error and a phase error of two corresponding amplified RF signals by comparing a QPSK signal that is generated by coupling two RF signals having a phase difference of 90° among the plurality of BPSK signals with a reference QPSK signal, and compensates the detected amplitude error and phase error.